Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 2108, column 19
Potential memory leak

Annotated Source Code

Press '?' to see keyboard shortcuts

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~svn338205/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn338205/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn338205/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn338205/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/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/lib/gcc/x86_64-linux-gnu/8/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-class-memaccess -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn338205/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-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-07-29-043837-17923-1 -x c++ /build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp -faddrsig
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/Lex/HeaderSearch.h"
57#include "clang/Lex/HeaderSearchOptions.h"
58#include "clang/Lex/MacroInfo.h"
59#include "clang/Lex/ModuleMap.h"
60#include "clang/Lex/PreprocessingRecord.h"
61#include "clang/Lex/Preprocessor.h"
62#include "clang/Lex/PreprocessorOptions.h"
63#include "clang/Lex/Token.h"
64#include "clang/Sema/IdentifierResolver.h"
65#include "clang/Sema/ObjCMethodList.h"
66#include "clang/Sema/Sema.h"
67#include "clang/Sema/Weak.h"
68#include "clang/Serialization/ASTReader.h"
69#include "clang/Serialization/Module.h"
70#include "clang/Serialization/ModuleFileExtension.h"
71#include "clang/Serialization/SerializationDiagnostic.h"
72#include "llvm/ADT/APFloat.h"
73#include "llvm/ADT/APInt.h"
74#include "llvm/ADT/APSInt.h"
75#include "llvm/ADT/ArrayRef.h"
76#include "llvm/ADT/DenseMap.h"
77#include "llvm/ADT/Hashing.h"
78#include "llvm/ADT/Optional.h"
79#include "llvm/ADT/PointerIntPair.h"
80#include "llvm/ADT/STLExtras.h"
81#include "llvm/ADT/ScopeExit.h"
82#include "llvm/ADT/SmallSet.h"
83#include "llvm/ADT/SmallString.h"
84#include "llvm/ADT/SmallVector.h"
85#include "llvm/ADT/StringMap.h"
86#include "llvm/ADT/StringRef.h"
87#include "llvm/Bitcode/BitCodes.h"
88#include "llvm/Bitcode/BitstreamWriter.h"
89#include "llvm/Support/Casting.h"
90#include "llvm/Support/Compression.h"
91#include "llvm/Support/DJB.h"
92#include "llvm/Support/Endian.h"
93#include "llvm/Support/EndianStream.h"
94#include "llvm/Support/Error.h"
95#include "llvm/Support/ErrorHandling.h"
96#include "llvm/Support/MemoryBuffer.h"
97#include "llvm/Support/OnDiskHashTable.h"
98#include "llvm/Support/Path.h"
99#include "llvm/Support/SHA1.h"
100#include "llvm/Support/VersionTuple.h"
101#include "llvm/Support/raw_ostream.h"
102#include <algorithm>
103#include <cassert>
104#include <cstdint>
105#include <cstdlib>
106#include <cstring>
107#include <ctime>
108#include <deque>
109#include <limits>
110#include <memory>
111#include <queue>
112#include <tuple>
113#include <utility>
114#include <vector>
115
116using namespace clang;
117using namespace clang::serialization;
118
119template <typename T, typename Allocator>
120static StringRef bytes(const std::vector<T, Allocator> &v) {
121 if (v.empty()) return StringRef();
122 return StringRef(reinterpret_cast<const char*>(&v[0]),
123 sizeof(T) * v.size());
124}
125
126template <typename T>
127static StringRef bytes(const SmallVectorImpl<T> &v) {
128 return StringRef(reinterpret_cast<const char*>(v.data()),
129 sizeof(T) * v.size());
130}
131
132//===----------------------------------------------------------------------===//
133// Type serialization
134//===----------------------------------------------------------------------===//
135
136namespace clang {
137
138 class ASTTypeWriter {
139 ASTWriter &Writer;
140 ASTRecordWriter Record;
141
142 /// Type code that corresponds to the record generated.
143 TypeCode Code = static_cast<TypeCode>(0);
144
145 /// Abbreviation to use for the record, if any.
146 unsigned AbbrevToUse = 0;
147
148 public:
149 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record)
150 : Writer(Writer), Record(Writer, Record) {}
151
152 uint64_t Emit() {
153 return Record.Emit(Code, AbbrevToUse);
154 }
155
156 void Visit(QualType T) {
157 if (T.hasLocalNonFastQualifiers()) {
158 Qualifiers Qs = T.getLocalQualifiers();
159 Record.AddTypeRef(T.getLocalUnqualifiedType());
160 Record.push_back(Qs.getAsOpaqueValue());
161 Code = TYPE_EXT_QUAL;
162 AbbrevToUse = Writer.TypeExtQualAbbrev;
163 } else {
164 switch (T->getTypeClass()) {
165 // For all of the concrete, non-dependent types, call the
166 // appropriate visitor function.
167#define TYPE(Class, Base) \
168 case Type::Class: Visit##Class##Type(cast<Class##Type>(T)); break;
169#define ABSTRACT_TYPE(Class, Base)
170#include "clang/AST/TypeNodes.def"
171 }
172 }
173 }
174
175 void VisitArrayType(const ArrayType *T);
176 void VisitFunctionType(const FunctionType *T);
177 void VisitTagType(const TagType *T);
178
179#define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T);
180#define ABSTRACT_TYPE(Class, Base)
181#include "clang/AST/TypeNodes.def"
182 };
183
184} // namespace clang
185
186void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) {
187 llvm_unreachable("Built-in types are never serialized")::llvm::llvm_unreachable_internal("Built-in types are never serialized"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 187)
;
188}
189
190void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
191 Record.AddTypeRef(T->getElementType());
192 Code = TYPE_COMPLEX;
193}
194
195void ASTTypeWriter::VisitPointerType(const PointerType *T) {
196 Record.AddTypeRef(T->getPointeeType());
197 Code = TYPE_POINTER;
198}
199
200void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
201 Record.AddTypeRef(T->getOriginalType());
202 Code = TYPE_DECAYED;
203}
204
205void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
206 Record.AddTypeRef(T->getOriginalType());
207 Record.AddTypeRef(T->getAdjustedType());
208 Code = TYPE_ADJUSTED;
209}
210
211void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
212 Record.AddTypeRef(T->getPointeeType());
213 Code = TYPE_BLOCK_POINTER;
214}
215
216void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
217 Record.AddTypeRef(T->getPointeeTypeAsWritten());
218 Record.push_back(T->isSpelledAsLValue());
219 Code = TYPE_LVALUE_REFERENCE;
220}
221
222void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
223 Record.AddTypeRef(T->getPointeeTypeAsWritten());
224 Code = TYPE_RVALUE_REFERENCE;
225}
226
227void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
228 Record.AddTypeRef(T->getPointeeType());
229 Record.AddTypeRef(QualType(T->getClass(), 0));
230 Code = TYPE_MEMBER_POINTER;
231}
232
233void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
234 Record.AddTypeRef(T->getElementType());
235 Record.push_back(T->getSizeModifier()); // FIXME: stable values
236 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
237}
238
239void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
240 VisitArrayType(T);
241 Record.AddAPInt(T->getSize());
242 Code = TYPE_CONSTANT_ARRAY;
243}
244
245void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
246 VisitArrayType(T);
247 Code = TYPE_INCOMPLETE_ARRAY;
248}
249
250void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
251 VisitArrayType(T);
252 Record.AddSourceLocation(T->getLBracketLoc());
253 Record.AddSourceLocation(T->getRBracketLoc());
254 Record.AddStmt(T->getSizeExpr());
255 Code = TYPE_VARIABLE_ARRAY;
256}
257
258void ASTTypeWriter::VisitVectorType(const VectorType *T) {
259 Record.AddTypeRef(T->getElementType());
260 Record.push_back(T->getNumElements());
261 Record.push_back(T->getVectorKind());
262 Code = TYPE_VECTOR;
263}
264
265void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
266 VisitVectorType(T);
267 Code = TYPE_EXT_VECTOR;
268}
269
270void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
271 Record.AddTypeRef(T->getReturnType());
272 FunctionType::ExtInfo C = T->getExtInfo();
273 Record.push_back(C.getNoReturn());
274 Record.push_back(C.getHasRegParm());
275 Record.push_back(C.getRegParm());
276 // FIXME: need to stabilize encoding of calling convention...
277 Record.push_back(C.getCC());
278 Record.push_back(C.getProducesResult());
279 Record.push_back(C.getNoCallerSavedRegs());
280 Record.push_back(C.getNoCfCheck());
281
282 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
283 AbbrevToUse = 0;
284}
285
286void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
287 VisitFunctionType(T);
288 Code = TYPE_FUNCTION_NO_PROTO;
289}
290
291static void addExceptionSpec(const FunctionProtoType *T,
292 ASTRecordWriter &Record) {
293 Record.push_back(T->getExceptionSpecType());
294 if (T->getExceptionSpecType() == EST_Dynamic) {
295 Record.push_back(T->getNumExceptions());
296 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
297 Record.AddTypeRef(T->getExceptionType(I));
298 } else if (isComputedNoexcept(T->getExceptionSpecType())) {
299 Record.AddStmt(T->getNoexceptExpr());
300 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
301 Record.AddDeclRef(T->getExceptionSpecDecl());
302 Record.AddDeclRef(T->getExceptionSpecTemplate());
303 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
304 Record.AddDeclRef(T->getExceptionSpecDecl());
305 }
306}
307
308void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
309 VisitFunctionType(T);
310
311 Record.push_back(T->isVariadic());
312 Record.push_back(T->hasTrailingReturn());
313 Record.push_back(T->getTypeQuals());
314 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
315 addExceptionSpec(T, Record);
316
317 Record.push_back(T->getNumParams());
318 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
319 Record.AddTypeRef(T->getParamType(I));
320
321 if (T->hasExtParameterInfos()) {
322 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
323 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
324 }
325
326 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
327 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
328 T->hasExtParameterInfos())
329 AbbrevToUse = 0;
330
331 Code = TYPE_FUNCTION_PROTO;
332}
333
334void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
335 Record.AddDeclRef(T->getDecl());
336 Code = TYPE_UNRESOLVED_USING;
337}
338
339void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
340 Record.AddDeclRef(T->getDecl());
341 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?")(static_cast <bool> (!T->isCanonicalUnqualified() &&
"Invalid typedef ?") ? void (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 341, __extension__ __PRETTY_FUNCTION__))
;
342 Record.AddTypeRef(T->getCanonicalTypeInternal());
343 Code = TYPE_TYPEDEF;
344}
345
346void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
347 Record.AddStmt(T->getUnderlyingExpr());
348 Code = TYPE_TYPEOF_EXPR;
349}
350
351void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
352 Record.AddTypeRef(T->getUnderlyingType());
353 Code = TYPE_TYPEOF;
354}
355
356void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
357 Record.AddTypeRef(T->getUnderlyingType());
358 Record.AddStmt(T->getUnderlyingExpr());
359 Code = TYPE_DECLTYPE;
360}
361
362void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
363 Record.AddTypeRef(T->getBaseType());
364 Record.AddTypeRef(T->getUnderlyingType());
365 Record.push_back(T->getUTTKind());
366 Code = TYPE_UNARY_TRANSFORM;
367}
368
369void ASTTypeWriter::VisitAutoType(const AutoType *T) {
370 Record.AddTypeRef(T->getDeducedType());
371 Record.push_back((unsigned)T->getKeyword());
372 if (T->getDeducedType().isNull())
373 Record.push_back(T->isDependentType());
374 Code = TYPE_AUTO;
375}
376
377void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
378 const DeducedTemplateSpecializationType *T) {
379 Record.AddTemplateName(T->getTemplateName());
380 Record.AddTypeRef(T->getDeducedType());
381 if (T->getDeducedType().isNull())
382 Record.push_back(T->isDependentType());
383 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
384}
385
386void ASTTypeWriter::VisitTagType(const TagType *T) {
387 Record.push_back(T->isDependentType());
388 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
389 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 390, __extension__ __PRETTY_FUNCTION__))
390 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 390, __extension__ __PRETTY_FUNCTION__))
;
391}
392
393void ASTTypeWriter::VisitRecordType(const RecordType *T) {
394 VisitTagType(T);
395 Code = TYPE_RECORD;
396}
397
398void ASTTypeWriter::VisitEnumType(const EnumType *T) {
399 VisitTagType(T);
400 Code = TYPE_ENUM;
401}
402
403void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
404 Record.AddTypeRef(T->getModifiedType());
405 Record.AddTypeRef(T->getEquivalentType());
406 Record.push_back(T->getAttrKind());
407 Code = TYPE_ATTRIBUTED;
408}
409
410void
411ASTTypeWriter::VisitSubstTemplateTypeParmType(
412 const SubstTemplateTypeParmType *T) {
413 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
414 Record.AddTypeRef(T->getReplacementType());
415 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
416}
417
418void
419ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
420 const SubstTemplateTypeParmPackType *T) {
421 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
422 Record.AddTemplateArgument(T->getArgumentPack());
423 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
424}
425
426void
427ASTTypeWriter::VisitTemplateSpecializationType(
428 const TemplateSpecializationType *T) {
429 Record.push_back(T->isDependentType());
430 Record.AddTemplateName(T->getTemplateName());
431 Record.push_back(T->getNumArgs());
432 for (const auto &ArgI : *T)
433 Record.AddTemplateArgument(ArgI);
434 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
435 : T->isCanonicalUnqualified()
436 ? QualType()
437 : T->getCanonicalTypeInternal());
438 Code = TYPE_TEMPLATE_SPECIALIZATION;
439}
440
441void
442ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
443 VisitArrayType(T);
444 Record.AddStmt(T->getSizeExpr());
445 Record.AddSourceRange(T->getBracketsRange());
446 Code = TYPE_DEPENDENT_SIZED_ARRAY;
447}
448
449void
450ASTTypeWriter::VisitDependentSizedExtVectorType(
451 const DependentSizedExtVectorType *T) {
452 Record.AddTypeRef(T->getElementType());
453 Record.AddStmt(T->getSizeExpr());
454 Record.AddSourceLocation(T->getAttributeLoc());
455 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
456}
457
458void ASTTypeWriter::VisitDependentVectorType(const DependentVectorType *T) {
459 Record.AddTypeRef(T->getElementType());
460 Record.AddStmt(const_cast<Expr*>(T->getSizeExpr()));
461 Record.AddSourceLocation(T->getAttributeLoc());
462 Record.push_back(T->getVectorKind());
463 Code = TYPE_DEPENDENT_SIZED_VECTOR;
464}
465
466void
467ASTTypeWriter::VisitDependentAddressSpaceType(
468 const DependentAddressSpaceType *T) {
469 Record.AddTypeRef(T->getPointeeType());
470 Record.AddStmt(T->getAddrSpaceExpr());
471 Record.AddSourceLocation(T->getAttributeLoc());
472 Code = TYPE_DEPENDENT_ADDRESS_SPACE;
473}
474
475void
476ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
477 Record.push_back(T->getDepth());
478 Record.push_back(T->getIndex());
479 Record.push_back(T->isParameterPack());
480 Record.AddDeclRef(T->getDecl());
481 Code = TYPE_TEMPLATE_TYPE_PARM;
482}
483
484void
485ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
486 Record.push_back(T->getKeyword());
487 Record.AddNestedNameSpecifier(T->getQualifier());
488 Record.AddIdentifierRef(T->getIdentifier());
489 Record.AddTypeRef(
490 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
491 Code = TYPE_DEPENDENT_NAME;
492}
493
494void
495ASTTypeWriter::VisitDependentTemplateSpecializationType(
496 const DependentTemplateSpecializationType *T) {
497 Record.push_back(T->getKeyword());
498 Record.AddNestedNameSpecifier(T->getQualifier());
499 Record.AddIdentifierRef(T->getIdentifier());
500 Record.push_back(T->getNumArgs());
501 for (const auto &I : *T)
502 Record.AddTemplateArgument(I);
503 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
504}
505
506void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
507 Record.AddTypeRef(T->getPattern());
508 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
509 Record.push_back(*NumExpansions + 1);
510 else
511 Record.push_back(0);
512 Code = TYPE_PACK_EXPANSION;
513}
514
515void ASTTypeWriter::VisitParenType(const ParenType *T) {
516 Record.AddTypeRef(T->getInnerType());
517 Code = TYPE_PAREN;
518}
519
520void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
521 Record.push_back(T->getKeyword());
522 Record.AddNestedNameSpecifier(T->getQualifier());
523 Record.AddTypeRef(T->getNamedType());
524 Record.AddDeclRef(T->getOwnedTagDecl());
525 Code = TYPE_ELABORATED;
526}
527
528void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
529 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
530 Record.AddTypeRef(T->getInjectedSpecializationType());
531 Code = TYPE_INJECTED_CLASS_NAME;
532}
533
534void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
535 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
536 Code = TYPE_OBJC_INTERFACE;
537}
538
539void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
540 Record.AddDeclRef(T->getDecl());
541 Record.push_back(T->getNumProtocols());
542 for (const auto *I : T->quals())
543 Record.AddDeclRef(I);
544 Code = TYPE_OBJC_TYPE_PARAM;
545}
546
547void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
548 Record.AddTypeRef(T->getBaseType());
549 Record.push_back(T->getTypeArgsAsWritten().size());
550 for (auto TypeArg : T->getTypeArgsAsWritten())
551 Record.AddTypeRef(TypeArg);
552 Record.push_back(T->getNumProtocols());
553 for (const auto *I : T->quals())
554 Record.AddDeclRef(I);
555 Record.push_back(T->isKindOfTypeAsWritten());
556 Code = TYPE_OBJC_OBJECT;
557}
558
559void
560ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
561 Record.AddTypeRef(T->getPointeeType());
562 Code = TYPE_OBJC_OBJECT_POINTER;
563}
564
565void
566ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
567 Record.AddTypeRef(T->getValueType());
568 Code = TYPE_ATOMIC;
569}
570
571void
572ASTTypeWriter::VisitPipeType(const PipeType *T) {
573 Record.AddTypeRef(T->getElementType());
574 Record.push_back(T->isReadOnly());
575 Code = TYPE_PIPE;
576}
577
578namespace {
579
580class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
581 ASTRecordWriter &Record;
582
583public:
584 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
585
586#define ABSTRACT_TYPELOC(CLASS, PARENT)
587#define TYPELOC(CLASS, PARENT) \
588 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
589#include "clang/AST/TypeLocNodes.def"
590
591 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
592 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
593};
594
595} // namespace
596
597void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
598 // nothing to do
599}
600
601void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
602 Record.AddSourceLocation(TL.getBuiltinLoc());
603 if (TL.needsExtraLocalData()) {
604 Record.push_back(TL.getWrittenTypeSpec());
605 Record.push_back(TL.getWrittenSignSpec());
606 Record.push_back(TL.getWrittenWidthSpec());
607 Record.push_back(TL.hasModeAttr());
608 }
609}
610
611void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
612 Record.AddSourceLocation(TL.getNameLoc());
613}
614
615void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
616 Record.AddSourceLocation(TL.getStarLoc());
617}
618
619void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
620 // nothing to do
621}
622
623void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
624 // nothing to do
625}
626
627void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
628 Record.AddSourceLocation(TL.getCaretLoc());
629}
630
631void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
632 Record.AddSourceLocation(TL.getAmpLoc());
633}
634
635void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
636 Record.AddSourceLocation(TL.getAmpAmpLoc());
637}
638
639void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
640 Record.AddSourceLocation(TL.getStarLoc());
641 Record.AddTypeSourceInfo(TL.getClassTInfo());
642}
643
644void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
645 Record.AddSourceLocation(TL.getLBracketLoc());
646 Record.AddSourceLocation(TL.getRBracketLoc());
647 Record.push_back(TL.getSizeExpr() ? 1 : 0);
648 if (TL.getSizeExpr())
649 Record.AddStmt(TL.getSizeExpr());
650}
651
652void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
653 VisitArrayTypeLoc(TL);
654}
655
656void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
657 VisitArrayTypeLoc(TL);
658}
659
660void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
661 VisitArrayTypeLoc(TL);
662}
663
664void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
665 DependentSizedArrayTypeLoc TL) {
666 VisitArrayTypeLoc(TL);
667}
668
669void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
670 DependentAddressSpaceTypeLoc TL) {
671 Record.AddSourceLocation(TL.getAttrNameLoc());
672 SourceRange range = TL.getAttrOperandParensRange();
673 Record.AddSourceLocation(range.getBegin());
674 Record.AddSourceLocation(range.getEnd());
675 Record.AddStmt(TL.getAttrExprOperand());
676}
677
678void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
679 DependentSizedExtVectorTypeLoc TL) {
680 Record.AddSourceLocation(TL.getNameLoc());
681}
682
683void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
684 Record.AddSourceLocation(TL.getNameLoc());
685}
686
687void TypeLocWriter::VisitDependentVectorTypeLoc(
688 DependentVectorTypeLoc TL) {
689 Record.AddSourceLocation(TL.getNameLoc());
690}
691
692void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
693 Record.AddSourceLocation(TL.getNameLoc());
694}
695
696void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
697 Record.AddSourceLocation(TL.getLocalRangeBegin());
698 Record.AddSourceLocation(TL.getLParenLoc());
699 Record.AddSourceLocation(TL.getRParenLoc());
700 Record.AddSourceRange(TL.getExceptionSpecRange());
701 Record.AddSourceLocation(TL.getLocalRangeEnd());
702 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
703 Record.AddDeclRef(TL.getParam(i));
704}
705
706void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
707 VisitFunctionTypeLoc(TL);
708}
709
710void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
711 VisitFunctionTypeLoc(TL);
712}
713
714void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
715 Record.AddSourceLocation(TL.getNameLoc());
716}
717
718void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
719 Record.AddSourceLocation(TL.getNameLoc());
720}
721
722void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
723 if (TL.getNumProtocols()) {
724 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
725 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
726 }
727 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
728 Record.AddSourceLocation(TL.getProtocolLoc(i));
729}
730
731void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
732 Record.AddSourceLocation(TL.getTypeofLoc());
733 Record.AddSourceLocation(TL.getLParenLoc());
734 Record.AddSourceLocation(TL.getRParenLoc());
735}
736
737void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
738 Record.AddSourceLocation(TL.getTypeofLoc());
739 Record.AddSourceLocation(TL.getLParenLoc());
740 Record.AddSourceLocation(TL.getRParenLoc());
741 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
742}
743
744void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
745 Record.AddSourceLocation(TL.getNameLoc());
746}
747
748void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
749 Record.AddSourceLocation(TL.getKWLoc());
750 Record.AddSourceLocation(TL.getLParenLoc());
751 Record.AddSourceLocation(TL.getRParenLoc());
752 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
753}
754
755void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
756 Record.AddSourceLocation(TL.getNameLoc());
757}
758
759void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
760 DeducedTemplateSpecializationTypeLoc TL) {
761 Record.AddSourceLocation(TL.getTemplateNameLoc());
762}
763
764void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
765 Record.AddSourceLocation(TL.getNameLoc());
766}
767
768void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
769 Record.AddSourceLocation(TL.getNameLoc());
770}
771
772void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
773 Record.AddSourceLocation(TL.getAttrNameLoc());
774 if (TL.hasAttrOperand()) {
775 SourceRange range = TL.getAttrOperandParensRange();
776 Record.AddSourceLocation(range.getBegin());
777 Record.AddSourceLocation(range.getEnd());
778 }
779 if (TL.hasAttrExprOperand()) {
780 Expr *operand = TL.getAttrExprOperand();
781 Record.push_back(operand ? 1 : 0);
782 if (operand) Record.AddStmt(operand);
783 } else if (TL.hasAttrEnumOperand()) {
784 Record.AddSourceLocation(TL.getAttrEnumOperandLoc());
785 }
786}
787
788void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
789 Record.AddSourceLocation(TL.getNameLoc());
790}
791
792void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
793 SubstTemplateTypeParmTypeLoc TL) {
794 Record.AddSourceLocation(TL.getNameLoc());
795}
796
797void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
798 SubstTemplateTypeParmPackTypeLoc TL) {
799 Record.AddSourceLocation(TL.getNameLoc());
800}
801
802void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
803 TemplateSpecializationTypeLoc TL) {
804 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
805 Record.AddSourceLocation(TL.getTemplateNameLoc());
806 Record.AddSourceLocation(TL.getLAngleLoc());
807 Record.AddSourceLocation(TL.getRAngleLoc());
808 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
809 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
810 TL.getArgLoc(i).getLocInfo());
811}
812
813void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
814 Record.AddSourceLocation(TL.getLParenLoc());
815 Record.AddSourceLocation(TL.getRParenLoc());
816}
817
818void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
819 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
820 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
821}
822
823void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
824 Record.AddSourceLocation(TL.getNameLoc());
825}
826
827void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
828 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
829 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
830 Record.AddSourceLocation(TL.getNameLoc());
831}
832
833void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
834 DependentTemplateSpecializationTypeLoc TL) {
835 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
836 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
837 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
838 Record.AddSourceLocation(TL.getTemplateNameLoc());
839 Record.AddSourceLocation(TL.getLAngleLoc());
840 Record.AddSourceLocation(TL.getRAngleLoc());
841 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
842 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
843 TL.getArgLoc(I).getLocInfo());
844}
845
846void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
847 Record.AddSourceLocation(TL.getEllipsisLoc());
848}
849
850void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
851 Record.AddSourceLocation(TL.getNameLoc());
852}
853
854void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
855 Record.push_back(TL.hasBaseTypeAsWritten());
856 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
857 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
858 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
859 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
860 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
861 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
862 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
863 Record.AddSourceLocation(TL.getProtocolLoc(i));
864}
865
866void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
867 Record.AddSourceLocation(TL.getStarLoc());
868}
869
870void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
871 Record.AddSourceLocation(TL.getKWLoc());
872 Record.AddSourceLocation(TL.getLParenLoc());
873 Record.AddSourceLocation(TL.getRParenLoc());
874}
875
876void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
877 Record.AddSourceLocation(TL.getKWLoc());
878}
879
880void ASTWriter::WriteTypeAbbrevs() {
881 using namespace llvm;
882
883 std::shared_ptr<BitCodeAbbrev> Abv;
884
885 // Abbreviation for TYPE_EXT_QUAL
886 Abv = std::make_shared<BitCodeAbbrev>();
887 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
890 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
891
892 // Abbreviation for TYPE_FUNCTION_PROTO
893 Abv = std::make_shared<BitCodeAbbrev>();
894 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
895 // FunctionType
896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
898 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
899 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
901 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
902 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
903 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
904 // FunctionProtoType
905 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
906 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
907 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
908 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
909 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
911 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
912 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
913 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
914}
915
916//===----------------------------------------------------------------------===//
917// ASTWriter Implementation
918//===----------------------------------------------------------------------===//
919
920static void EmitBlockID(unsigned ID, const char *Name,
921 llvm::BitstreamWriter &Stream,
922 ASTWriter::RecordDataImpl &Record) {
923 Record.clear();
924 Record.push_back(ID);
925 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
926
927 // Emit the block name if present.
928 if (!Name || Name[0] == 0)
929 return;
930 Record.clear();
931 while (*Name)
932 Record.push_back(*Name++);
933 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
934}
935
936static void EmitRecordID(unsigned ID, const char *Name,
937 llvm::BitstreamWriter &Stream,
938 ASTWriter::RecordDataImpl &Record) {
939 Record.clear();
940 Record.push_back(ID);
941 while (*Name)
942 Record.push_back(*Name++);
943 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
944}
945
946static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
947 ASTWriter::RecordDataImpl &Record) {
948#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
949 RECORD(STMT_STOP);
950 RECORD(STMT_NULL_PTR);
951 RECORD(STMT_REF_PTR);
952 RECORD(STMT_NULL);
953 RECORD(STMT_COMPOUND);
954 RECORD(STMT_CASE);
955 RECORD(STMT_DEFAULT);
956 RECORD(STMT_LABEL);
957 RECORD(STMT_ATTRIBUTED);
958 RECORD(STMT_IF);
959 RECORD(STMT_SWITCH);
960 RECORD(STMT_WHILE);
961 RECORD(STMT_DO);
962 RECORD(STMT_FOR);
963 RECORD(STMT_GOTO);
964 RECORD(STMT_INDIRECT_GOTO);
965 RECORD(STMT_CONTINUE);
966 RECORD(STMT_BREAK);
967 RECORD(STMT_RETURN);
968 RECORD(STMT_DECL);
969 RECORD(STMT_GCCASM);
970 RECORD(STMT_MSASM);
971 RECORD(EXPR_PREDEFINED);
972 RECORD(EXPR_DECL_REF);
973 RECORD(EXPR_INTEGER_LITERAL);
974 RECORD(EXPR_FLOATING_LITERAL);
975 RECORD(EXPR_IMAGINARY_LITERAL);
976 RECORD(EXPR_STRING_LITERAL);
977 RECORD(EXPR_CHARACTER_LITERAL);
978 RECORD(EXPR_PAREN);
979 RECORD(EXPR_PAREN_LIST);
980 RECORD(EXPR_UNARY_OPERATOR);
981 RECORD(EXPR_SIZEOF_ALIGN_OF);
982 RECORD(EXPR_ARRAY_SUBSCRIPT);
983 RECORD(EXPR_CALL);
984 RECORD(EXPR_MEMBER);
985 RECORD(EXPR_BINARY_OPERATOR);
986 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
987 RECORD(EXPR_CONDITIONAL_OPERATOR);
988 RECORD(EXPR_IMPLICIT_CAST);
989 RECORD(EXPR_CSTYLE_CAST);
990 RECORD(EXPR_COMPOUND_LITERAL);
991 RECORD(EXPR_EXT_VECTOR_ELEMENT);
992 RECORD(EXPR_INIT_LIST);
993 RECORD(EXPR_DESIGNATED_INIT);
994 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
995 RECORD(EXPR_IMPLICIT_VALUE_INIT);
996 RECORD(EXPR_NO_INIT);
997 RECORD(EXPR_VA_ARG);
998 RECORD(EXPR_ADDR_LABEL);
999 RECORD(EXPR_STMT);
1000 RECORD(EXPR_CHOOSE);
1001 RECORD(EXPR_GNU_NULL);
1002 RECORD(EXPR_SHUFFLE_VECTOR);
1003 RECORD(EXPR_BLOCK);
1004 RECORD(EXPR_GENERIC_SELECTION);
1005 RECORD(EXPR_OBJC_STRING_LITERAL);
1006 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
1007 RECORD(EXPR_OBJC_ARRAY_LITERAL);
1008 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
1009 RECORD(EXPR_OBJC_ENCODE);
1010 RECORD(EXPR_OBJC_SELECTOR_EXPR);
1011 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
1012 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
1013 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
1014 RECORD(EXPR_OBJC_KVC_REF_EXPR);
1015 RECORD(EXPR_OBJC_MESSAGE_EXPR);
1016 RECORD(STMT_OBJC_FOR_COLLECTION);
1017 RECORD(STMT_OBJC_CATCH);
1018 RECORD(STMT_OBJC_FINALLY);
1019 RECORD(STMT_OBJC_AT_TRY);
1020 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1021 RECORD(STMT_OBJC_AT_THROW);
1022 RECORD(EXPR_OBJC_BOOL_LITERAL);
1023 RECORD(STMT_CXX_CATCH);
1024 RECORD(STMT_CXX_TRY);
1025 RECORD(STMT_CXX_FOR_RANGE);
1026 RECORD(EXPR_CXX_OPERATOR_CALL);
1027 RECORD(EXPR_CXX_MEMBER_CALL);
1028 RECORD(EXPR_CXX_CONSTRUCT);
1029 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1030 RECORD(EXPR_CXX_STATIC_CAST);
1031 RECORD(EXPR_CXX_DYNAMIC_CAST);
1032 RECORD(EXPR_CXX_REINTERPRET_CAST);
1033 RECORD(EXPR_CXX_CONST_CAST);
1034 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1035 RECORD(EXPR_USER_DEFINED_LITERAL);
1036 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1037 RECORD(EXPR_CXX_BOOL_LITERAL);
1038 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1039 RECORD(EXPR_CXX_TYPEID_EXPR);
1040 RECORD(EXPR_CXX_TYPEID_TYPE);
1041 RECORD(EXPR_CXX_THIS);
1042 RECORD(EXPR_CXX_THROW);
1043 RECORD(EXPR_CXX_DEFAULT_ARG);
1044 RECORD(EXPR_CXX_DEFAULT_INIT);
1045 RECORD(EXPR_CXX_BIND_TEMPORARY);
1046 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1047 RECORD(EXPR_CXX_NEW);
1048 RECORD(EXPR_CXX_DELETE);
1049 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1050 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1051 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1052 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1053 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1054 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1055 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1056 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1057 RECORD(EXPR_CXX_NOEXCEPT);
1058 RECORD(EXPR_OPAQUE_VALUE);
1059 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1060 RECORD(EXPR_TYPE_TRAIT);
1061 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1062 RECORD(EXPR_PACK_EXPANSION);
1063 RECORD(EXPR_SIZEOF_PACK);
1064 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1065 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1066 RECORD(EXPR_FUNCTION_PARM_PACK);
1067 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1068 RECORD(EXPR_CUDA_KERNEL_CALL);
1069 RECORD(EXPR_CXX_UUIDOF_EXPR);
1070 RECORD(EXPR_CXX_UUIDOF_TYPE);
1071 RECORD(EXPR_LAMBDA);
1072#undef RECORD
1073}
1074
1075void ASTWriter::WriteBlockInfoBlock() {
1076 RecordData Record;
1077 Stream.EnterBlockInfoBlock();
1078
1079#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1080#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1081
1082 // Control Block.
1083 BLOCK(CONTROL_BLOCK);
1084 RECORD(METADATA);
1085 RECORD(MODULE_NAME);
1086 RECORD(MODULE_DIRECTORY);
1087 RECORD(MODULE_MAP_FILE);
1088 RECORD(IMPORTS);
1089 RECORD(ORIGINAL_FILE);
1090 RECORD(ORIGINAL_PCH_DIR);
1091 RECORD(ORIGINAL_FILE_ID);
1092 RECORD(INPUT_FILE_OFFSETS);
1093
1094 BLOCK(OPTIONS_BLOCK);
1095 RECORD(LANGUAGE_OPTIONS);
1096 RECORD(TARGET_OPTIONS);
1097 RECORD(FILE_SYSTEM_OPTIONS);
1098 RECORD(HEADER_SEARCH_OPTIONS);
1099 RECORD(PREPROCESSOR_OPTIONS);
1100
1101 BLOCK(INPUT_FILES_BLOCK);
1102 RECORD(INPUT_FILE);
1103
1104 // AST Top-Level Block.
1105 BLOCK(AST_BLOCK);
1106 RECORD(TYPE_OFFSET);
1107 RECORD(DECL_OFFSET);
1108 RECORD(IDENTIFIER_OFFSET);
1109 RECORD(IDENTIFIER_TABLE);
1110 RECORD(EAGERLY_DESERIALIZED_DECLS);
1111 RECORD(MODULAR_CODEGEN_DECLS);
1112 RECORD(SPECIAL_TYPES);
1113 RECORD(STATISTICS);
1114 RECORD(TENTATIVE_DEFINITIONS);
1115 RECORD(SELECTOR_OFFSETS);
1116 RECORD(METHOD_POOL);
1117 RECORD(PP_COUNTER_VALUE);
1118 RECORD(SOURCE_LOCATION_OFFSETS);
1119 RECORD(SOURCE_LOCATION_PRELOADS);
1120 RECORD(EXT_VECTOR_DECLS);
1121 RECORD(UNUSED_FILESCOPED_DECLS);
1122 RECORD(PPD_ENTITIES_OFFSETS);
1123 RECORD(VTABLE_USES);
1124 RECORD(PPD_SKIPPED_RANGES);
1125 RECORD(REFERENCED_SELECTOR_POOL);
1126 RECORD(TU_UPDATE_LEXICAL);
1127 RECORD(SEMA_DECL_REFS);
1128 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1129 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1130 RECORD(UPDATE_VISIBLE);
1131 RECORD(DECL_UPDATE_OFFSETS);
1132 RECORD(DECL_UPDATES);
1133 RECORD(CUDA_SPECIAL_DECL_REFS);
1134 RECORD(HEADER_SEARCH_TABLE);
1135 RECORD(FP_PRAGMA_OPTIONS);
1136 RECORD(OPENCL_EXTENSIONS);
1137 RECORD(OPENCL_EXTENSION_TYPES);
1138 RECORD(OPENCL_EXTENSION_DECLS);
1139 RECORD(DELEGATING_CTORS);
1140 RECORD(KNOWN_NAMESPACES);
1141 RECORD(MODULE_OFFSET_MAP);
1142 RECORD(SOURCE_MANAGER_LINE_TABLE);
1143 RECORD(OBJC_CATEGORIES_MAP);
1144 RECORD(FILE_SORTED_DECLS);
1145 RECORD(IMPORTED_MODULES);
1146 RECORD(OBJC_CATEGORIES);
1147 RECORD(MACRO_OFFSET);
1148 RECORD(INTERESTING_IDENTIFIERS);
1149 RECORD(UNDEFINED_BUT_USED);
1150 RECORD(LATE_PARSED_TEMPLATE);
1151 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1152 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1153 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1154 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1155 RECORD(DELETE_EXPRS_TO_ANALYZE);
1156 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1157 RECORD(PP_CONDITIONAL_STACK);
1158
1159 // SourceManager Block.
1160 BLOCK(SOURCE_MANAGER_BLOCK);
1161 RECORD(SM_SLOC_FILE_ENTRY);
1162 RECORD(SM_SLOC_BUFFER_ENTRY);
1163 RECORD(SM_SLOC_BUFFER_BLOB);
1164 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1165 RECORD(SM_SLOC_EXPANSION_ENTRY);
1166
1167 // Preprocessor Block.
1168 BLOCK(PREPROCESSOR_BLOCK);
1169 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1170 RECORD(PP_MACRO_FUNCTION_LIKE);
1171 RECORD(PP_MACRO_OBJECT_LIKE);
1172 RECORD(PP_MODULE_MACRO);
1173 RECORD(PP_TOKEN);
1174
1175 // Submodule Block.
1176 BLOCK(SUBMODULE_BLOCK);
1177 RECORD(SUBMODULE_METADATA);
1178 RECORD(SUBMODULE_DEFINITION);
1179 RECORD(SUBMODULE_UMBRELLA_HEADER);
1180 RECORD(SUBMODULE_HEADER);
1181 RECORD(SUBMODULE_TOPHEADER);
1182 RECORD(SUBMODULE_UMBRELLA_DIR);
1183 RECORD(SUBMODULE_IMPORTS);
1184 RECORD(SUBMODULE_EXPORTS);
1185 RECORD(SUBMODULE_REQUIRES);
1186 RECORD(SUBMODULE_EXCLUDED_HEADER);
1187 RECORD(SUBMODULE_LINK_LIBRARY);
1188 RECORD(SUBMODULE_CONFIG_MACRO);
1189 RECORD(SUBMODULE_CONFLICT);
1190 RECORD(SUBMODULE_PRIVATE_HEADER);
1191 RECORD(SUBMODULE_TEXTUAL_HEADER);
1192 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1193 RECORD(SUBMODULE_INITIALIZERS);
1194 RECORD(SUBMODULE_EXPORT_AS);
1195
1196 // Comments Block.
1197 BLOCK(COMMENTS_BLOCK);
1198 RECORD(COMMENTS_RAW_COMMENT);
1199
1200 // Decls and Types block.
1201 BLOCK(DECLTYPES_BLOCK);
1202 RECORD(TYPE_EXT_QUAL);
1203 RECORD(TYPE_COMPLEX);
1204 RECORD(TYPE_POINTER);
1205 RECORD(TYPE_BLOCK_POINTER);
1206 RECORD(TYPE_LVALUE_REFERENCE);
1207 RECORD(TYPE_RVALUE_REFERENCE);
1208 RECORD(TYPE_MEMBER_POINTER);
1209 RECORD(TYPE_CONSTANT_ARRAY);
1210 RECORD(TYPE_INCOMPLETE_ARRAY);
1211 RECORD(TYPE_VARIABLE_ARRAY);
1212 RECORD(TYPE_VECTOR);
1213 RECORD(TYPE_EXT_VECTOR);
1214 RECORD(TYPE_FUNCTION_NO_PROTO);
1215 RECORD(TYPE_FUNCTION_PROTO);
1216 RECORD(TYPE_TYPEDEF);
1217 RECORD(TYPE_TYPEOF_EXPR);
1218 RECORD(TYPE_TYPEOF);
1219 RECORD(TYPE_RECORD);
1220 RECORD(TYPE_ENUM);
1221 RECORD(TYPE_OBJC_INTERFACE);
1222 RECORD(TYPE_OBJC_OBJECT_POINTER);
1223 RECORD(TYPE_DECLTYPE);
1224 RECORD(TYPE_ELABORATED);
1225 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1226 RECORD(TYPE_UNRESOLVED_USING);
1227 RECORD(TYPE_INJECTED_CLASS_NAME);
1228 RECORD(TYPE_OBJC_OBJECT);
1229 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1230 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1231 RECORD(TYPE_DEPENDENT_NAME);
1232 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1233 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1234 RECORD(TYPE_PAREN);
1235 RECORD(TYPE_PACK_EXPANSION);
1236 RECORD(TYPE_ATTRIBUTED);
1237 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1238 RECORD(TYPE_AUTO);
1239 RECORD(TYPE_UNARY_TRANSFORM);
1240 RECORD(TYPE_ATOMIC);
1241 RECORD(TYPE_DECAYED);
1242 RECORD(TYPE_ADJUSTED);
1243 RECORD(TYPE_OBJC_TYPE_PARAM);
1244 RECORD(LOCAL_REDECLARATIONS);
1245 RECORD(DECL_TYPEDEF);
1246 RECORD(DECL_TYPEALIAS);
1247 RECORD(DECL_ENUM);
1248 RECORD(DECL_RECORD);
1249 RECORD(DECL_ENUM_CONSTANT);
1250 RECORD(DECL_FUNCTION);
1251 RECORD(DECL_OBJC_METHOD);
1252 RECORD(DECL_OBJC_INTERFACE);
1253 RECORD(DECL_OBJC_PROTOCOL);
1254 RECORD(DECL_OBJC_IVAR);
1255 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1256 RECORD(DECL_OBJC_CATEGORY);
1257 RECORD(DECL_OBJC_CATEGORY_IMPL);
1258 RECORD(DECL_OBJC_IMPLEMENTATION);
1259 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1260 RECORD(DECL_OBJC_PROPERTY);
1261 RECORD(DECL_OBJC_PROPERTY_IMPL);
1262 RECORD(DECL_FIELD);
1263 RECORD(DECL_MS_PROPERTY);
1264 RECORD(DECL_VAR);
1265 RECORD(DECL_IMPLICIT_PARAM);
1266 RECORD(DECL_PARM_VAR);
1267 RECORD(DECL_FILE_SCOPE_ASM);
1268 RECORD(DECL_BLOCK);
1269 RECORD(DECL_CONTEXT_LEXICAL);
1270 RECORD(DECL_CONTEXT_VISIBLE);
1271 RECORD(DECL_NAMESPACE);
1272 RECORD(DECL_NAMESPACE_ALIAS);
1273 RECORD(DECL_USING);
1274 RECORD(DECL_USING_SHADOW);
1275 RECORD(DECL_USING_DIRECTIVE);
1276 RECORD(DECL_UNRESOLVED_USING_VALUE);
1277 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1278 RECORD(DECL_LINKAGE_SPEC);
1279 RECORD(DECL_CXX_RECORD);
1280 RECORD(DECL_CXX_METHOD);
1281 RECORD(DECL_CXX_CONSTRUCTOR);
1282 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1283 RECORD(DECL_CXX_DESTRUCTOR);
1284 RECORD(DECL_CXX_CONVERSION);
1285 RECORD(DECL_ACCESS_SPEC);
1286 RECORD(DECL_FRIEND);
1287 RECORD(DECL_FRIEND_TEMPLATE);
1288 RECORD(DECL_CLASS_TEMPLATE);
1289 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1290 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1291 RECORD(DECL_VAR_TEMPLATE);
1292 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1293 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1294 RECORD(DECL_FUNCTION_TEMPLATE);
1295 RECORD(DECL_TEMPLATE_TYPE_PARM);
1296 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1297 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1298 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1299 RECORD(DECL_STATIC_ASSERT);
1300 RECORD(DECL_CXX_BASE_SPECIFIERS);
1301 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1302 RECORD(DECL_INDIRECTFIELD);
1303 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1304 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1305 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1306 RECORD(DECL_IMPORT);
1307 RECORD(DECL_OMP_THREADPRIVATE);
1308 RECORD(DECL_EMPTY);
1309 RECORD(DECL_OBJC_TYPE_PARAM);
1310 RECORD(DECL_OMP_CAPTUREDEXPR);
1311 RECORD(DECL_PRAGMA_COMMENT);
1312 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1313 RECORD(DECL_OMP_DECLARE_REDUCTION);
1314
1315 // Statements and Exprs can occur in the Decls and Types block.
1316 AddStmtsExprs(Stream, Record);
1317
1318 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1319 RECORD(PPD_MACRO_EXPANSION);
1320 RECORD(PPD_MACRO_DEFINITION);
1321 RECORD(PPD_INCLUSION_DIRECTIVE);
1322
1323 // Decls and Types block.
1324 BLOCK(EXTENSION_BLOCK);
1325 RECORD(EXTENSION_METADATA);
1326
1327 BLOCK(UNHASHED_CONTROL_BLOCK);
1328 RECORD(SIGNATURE);
1329 RECORD(DIAGNOSTIC_OPTIONS);
1330 RECORD(DIAG_PRAGMA_MAPPINGS);
1331
1332#undef RECORD
1333#undef BLOCK
1334 Stream.ExitBlock();
1335}
1336
1337/// Prepares a path for being written to an AST file by converting it
1338/// to an absolute path and removing nested './'s.
1339///
1340/// \return \c true if the path was changed.
1341static bool cleanPathForOutput(FileManager &FileMgr,
1342 SmallVectorImpl<char> &Path) {
1343 bool Changed = FileMgr.makeAbsolutePath(Path);
1344 return Changed | llvm::sys::path::remove_dots(Path);
1345}
1346
1347/// Adjusts the given filename to only write out the portion of the
1348/// filename that is not part of the system root directory.
1349///
1350/// \param Filename the file name to adjust.
1351///
1352/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1353/// the returned filename will be adjusted by this root directory.
1354///
1355/// \returns either the original filename (if it needs no adjustment) or the
1356/// adjusted filename (which points into the @p Filename parameter).
1357static const char *
1358adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1359 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1359, __extension__ __PRETTY_FUNCTION__))
;
1360
1361 if (BaseDir.empty())
1362 return Filename;
1363
1364 // Verify that the filename and the system root have the same prefix.
1365 unsigned Pos = 0;
1366 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1367 if (Filename[Pos] != BaseDir[Pos])
1368 return Filename; // Prefixes don't match.
1369
1370 // We hit the end of the filename before we hit the end of the system root.
1371 if (!Filename[Pos])
1372 return Filename;
1373
1374 // If there's not a path separator at the end of the base directory nor
1375 // immediately after it, then this isn't within the base directory.
1376 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1377 if (!llvm::sys::path::is_separator(BaseDir.back()))
1378 return Filename;
1379 } else {
1380 // If the file name has a '/' at the current position, skip over the '/'.
1381 // We distinguish relative paths from absolute paths by the
1382 // absence of '/' at the beginning of relative paths.
1383 //
1384 // FIXME: This is wrong. We distinguish them by asking if the path is
1385 // absolute, which isn't the same thing. And there might be multiple '/'s
1386 // in a row. Use a better mechanism to indicate whether we have emitted an
1387 // absolute or relative path.
1388 ++Pos;
1389 }
1390
1391 return Filename + Pos;
1392}
1393
1394ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1395 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1396 llvm::SHA1 Hasher;
1397 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1398 auto Hash = Hasher.result();
1399
1400 // Convert to an array [5*i32].
1401 ASTFileSignature Signature;
1402 auto LShift = [&](unsigned char Val, unsigned Shift) {
1403 return (uint32_t)Val << Shift;
1404 };
1405 for (int I = 0; I != 5; ++I)
1406 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1407 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1408
1409 return Signature;
1410}
1411
1412ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1413 ASTContext &Context) {
1414 // Flush first to prepare the PCM hash (signature).
1415 Stream.FlushToWord();
1416 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1417
1418 // Enter the block and prepare to write records.
1419 RecordData Record;
1420 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1421
1422 // For implicit modules, write the hash of the PCM as its signature.
1423 ASTFileSignature Signature;
1424 if (WritingModule &&
1425 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1426 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1427 Record.append(Signature.begin(), Signature.end());
1428 Stream.EmitRecord(SIGNATURE, Record);
1429 Record.clear();
1430 }
1431
1432 // Diagnostic options.
1433 const auto &Diags = Context.getDiagnostics();
1434 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1435#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1436#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1437 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1438#include "clang/Basic/DiagnosticOptions.def"
1439 Record.push_back(DiagOpts.Warnings.size());
1440 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1441 AddString(DiagOpts.Warnings[I], Record);
1442 Record.push_back(DiagOpts.Remarks.size());
1443 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1444 AddString(DiagOpts.Remarks[I], Record);
1445 // Note: we don't serialize the log or serialization file names, because they
1446 // are generally transient files and will almost always be overridden.
1447 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1448
1449 // Write out the diagnostic/pragma mappings.
1450 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1451
1452 // Leave the options block.
1453 Stream.ExitBlock();
1454 return Signature;
1455}
1456
1457/// Write the control block.
1458void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1459 StringRef isysroot,
1460 const std::string &OutputFile) {
1461 using namespace llvm;
1462
1463 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1464 RecordData Record;
1465
1466 // Metadata
1467 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1468 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1469 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1470 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1471 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1472 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1473 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1474 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1475 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PCHHasObjectFile
1476 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1477 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1478 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1479 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1480, __extension__ __PRETTY_FUNCTION__))
1480 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1480, __extension__ __PRETTY_FUNCTION__))
;
1481 {
1482 RecordData::value_type Record[] = {
1483 METADATA,
1484 VERSION_MAJOR,
1485 VERSION_MINOR,
1486 CLANG_VERSION_MAJOR7,
1487 CLANG_VERSION_MINOR0,
1488 !isysroot.empty(),
1489 IncludeTimestamps,
1490 Context.getLangOpts().BuildingPCHWithObjectFile,
1491 ASTHasCompilerErrors};
1492 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1493 getClangFullRepositoryVersion());
1494 }
1495
1496 if (WritingModule) {
1497 // Module name
1498 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1499 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1500 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1501 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1502 RecordData::value_type Record[] = {MODULE_NAME};
1503 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1504 }
1505
1506 if (WritingModule && WritingModule->Directory) {
1507 SmallString<128> BaseDir(WritingModule->Directory->getName());
1508 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1509
1510 // If the home of the module is the current working directory, then we
1511 // want to pick up the cwd of the build process loading the module, not
1512 // our cwd, when we load this module.
1513 if (!PP.getHeaderSearchInfo()
1514 .getHeaderSearchOpts()
1515 .ModuleMapFileHomeIsCwd ||
1516 WritingModule->Directory->getName() != StringRef(".")) {
1517 // Module directory.
1518 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1519 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1520 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1521 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1522
1523 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1524 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1525 }
1526
1527 // Write out all other paths relative to the base directory if possible.
1528 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1529 } else if (!isysroot.empty()) {
1530 // Write out paths relative to the sysroot if possible.
1531 BaseDirectory = isysroot;
1532 }
1533
1534 // Module map file
1535 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1536 Record.clear();
1537
1538 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1539 AddPath(WritingModule->PresumedModuleMapFile.empty()
1540 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1541 : StringRef(WritingModule->PresumedModuleMapFile),
1542 Record);
1543
1544 // Additional module map files.
1545 if (auto *AdditionalModMaps =
1546 Map.getAdditionalModuleMapFiles(WritingModule)) {
1547 Record.push_back(AdditionalModMaps->size());
1548 for (const FileEntry *F : *AdditionalModMaps)
1549 AddPath(F->getName(), Record);
1550 } else {
1551 Record.push_back(0);
1552 }
1553
1554 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1555 }
1556
1557 // Imports
1558 if (Chain) {
1559 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1560 Record.clear();
1561
1562 for (ModuleFile &M : Mgr) {
1563 // Skip modules that weren't directly imported.
1564 if (!M.isDirectlyImported())
1565 continue;
1566
1567 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1568 AddSourceLocation(M.ImportLoc, Record);
1569
1570 // If we have calculated signature, there is no need to store
1571 // the size or timestamp.
1572 Record.push_back(M.Signature ? 0 : M.File->getSize());
1573 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1574
1575 for (auto I : M.Signature)
1576 Record.push_back(I);
1577
1578 AddString(M.ModuleName, Record);
1579 AddPath(M.FileName, Record);
1580 }
1581 Stream.EmitRecord(IMPORTS, Record);
1582 }
1583
1584 // Write the options block.
1585 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1586
1587 // Language options.
1588 Record.clear();
1589 const LangOptions &LangOpts = Context.getLangOpts();
1590#define LANGOPT(Name, Bits, Default, Description) \
1591 Record.push_back(LangOpts.Name);
1592#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1593 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1594#include "clang/Basic/LangOptions.def"
1595#define SANITIZER(NAME, ID) \
1596 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1597#include "clang/Basic/Sanitizers.def"
1598
1599 Record.push_back(LangOpts.ModuleFeatures.size());
1600 for (StringRef Feature : LangOpts.ModuleFeatures)
1601 AddString(Feature, Record);
1602
1603 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1604 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1605
1606 AddString(LangOpts.CurrentModule, Record);
1607
1608 // Comment options.
1609 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1610 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1611 AddString(I, Record);
1612 }
1613 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1614
1615 // OpenMP offloading options.
1616 Record.push_back(LangOpts.OMPTargetTriples.size());
1617 for (auto &T : LangOpts.OMPTargetTriples)
1618 AddString(T.getTriple(), Record);
1619
1620 AddString(LangOpts.OMPHostIRFile, Record);
1621
1622 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1623
1624 // Target options.
1625 Record.clear();
1626 const TargetInfo &Target = Context.getTargetInfo();
1627 const TargetOptions &TargetOpts = Target.getTargetOpts();
1628 AddString(TargetOpts.Triple, Record);
1629 AddString(TargetOpts.CPU, Record);
1630 AddString(TargetOpts.ABI, Record);
1631 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1632 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1633 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1634 }
1635 Record.push_back(TargetOpts.Features.size());
1636 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1637 AddString(TargetOpts.Features[I], Record);
1638 }
1639 Stream.EmitRecord(TARGET_OPTIONS, Record);
1640
1641 // File system options.
1642 Record.clear();
1643 const FileSystemOptions &FSOpts =
1644 Context.getSourceManager().getFileManager().getFileSystemOpts();
1645 AddString(FSOpts.WorkingDir, Record);
1646 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1647
1648 // Header search options.
1649 Record.clear();
1650 const HeaderSearchOptions &HSOpts
1651 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1652 AddString(HSOpts.Sysroot, Record);
1653
1654 // Include entries.
1655 Record.push_back(HSOpts.UserEntries.size());
1656 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1657 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1658 AddString(Entry.Path, Record);
1659 Record.push_back(static_cast<unsigned>(Entry.Group));
1660 Record.push_back(Entry.IsFramework);
1661 Record.push_back(Entry.IgnoreSysRoot);
1662 }
1663
1664 // System header prefixes.
1665 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1666 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1667 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1668 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1669 }
1670
1671 AddString(HSOpts.ResourceDir, Record);
1672 AddString(HSOpts.ModuleCachePath, Record);
1673 AddString(HSOpts.ModuleUserBuildPath, Record);
1674 Record.push_back(HSOpts.DisableModuleHash);
1675 Record.push_back(HSOpts.ImplicitModuleMaps);
1676 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1677 Record.push_back(HSOpts.UseBuiltinIncludes);
1678 Record.push_back(HSOpts.UseStandardSystemIncludes);
1679 Record.push_back(HSOpts.UseStandardCXXIncludes);
1680 Record.push_back(HSOpts.UseLibcxx);
1681 // Write out the specific module cache path that contains the module files.
1682 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1683 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1684
1685 // Preprocessor options.
1686 Record.clear();
1687 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1688
1689 // Macro definitions.
1690 Record.push_back(PPOpts.Macros.size());
1691 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1692 AddString(PPOpts.Macros[I].first, Record);
1693 Record.push_back(PPOpts.Macros[I].second);
1694 }
1695
1696 // Includes
1697 Record.push_back(PPOpts.Includes.size());
1698 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1699 AddString(PPOpts.Includes[I], Record);
1700
1701 // Macro includes
1702 Record.push_back(PPOpts.MacroIncludes.size());
1703 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1704 AddString(PPOpts.MacroIncludes[I], Record);
1705
1706 Record.push_back(PPOpts.UsePredefines);
1707 // Detailed record is important since it is used for the module cache hash.
1708 Record.push_back(PPOpts.DetailedRecord);
1709 AddString(PPOpts.ImplicitPCHInclude, Record);
1710 AddString(PPOpts.ImplicitPTHInclude, Record);
1711 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1712 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1713
1714 // Leave the options block.
1715 Stream.ExitBlock();
1716
1717 // Original file name and file ID
1718 SourceManager &SM = Context.getSourceManager();
1719 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1720 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1721 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1722 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1723 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1724 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1725
1726 Record.clear();
1727 Record.push_back(ORIGINAL_FILE);
1728 Record.push_back(SM.getMainFileID().getOpaqueValue());
1729 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1730 }
1731
1732 Record.clear();
1733 Record.push_back(SM.getMainFileID().getOpaqueValue());
1734 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1735
1736 // Original PCH directory
1737 if (!OutputFile.empty() && OutputFile != "-") {
1738 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1739 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1740 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1741 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1742
1743 SmallString<128> OutputPath(OutputFile);
1744
1745 SM.getFileManager().makeAbsolutePath(OutputPath);
1746 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1747
1748 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1749 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1750 }
1751
1752 WriteInputFiles(Context.SourceMgr,
1753 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1754 PP.getLangOpts().Modules);
1755 Stream.ExitBlock();
1756}
1757
1758namespace {
1759
1760/// An input file.
1761struct InputFileEntry {
1762 const FileEntry *File;
1763 bool IsSystemFile;
1764 bool IsTransient;
1765 bool BufferOverridden;
1766 bool IsTopLevelModuleMap;
1767};
1768
1769} // namespace
1770
1771void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1772 HeaderSearchOptions &HSOpts,
1773 bool Modules) {
1774 using namespace llvm;
1775
1776 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1777
1778 // Create input-file abbreviation.
1779 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1780 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1781 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1782 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1783 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1784 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1785 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1786 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1787 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1788 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1789
1790 // Get all ContentCache objects for files, sorted by whether the file is a
1791 // system one or not. System files go at the back, users files at the front.
1792 std::deque<InputFileEntry> SortedFiles;
1793 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1794 // Get this source location entry.
1795 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1796 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FileID
::get(I)) == SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1796, __extension__ __PRETTY_FUNCTION__))
;
1797
1798 // We only care about file entries that were not overridden.
1799 if (!SLoc->isFile())
1800 continue;
1801 const SrcMgr::FileInfo &File = SLoc->getFile();
1802 const SrcMgr::ContentCache *Cache = File.getContentCache();
1803 if (!Cache->OrigEntry)
1804 continue;
1805
1806 InputFileEntry Entry;
1807 Entry.File = Cache->OrigEntry;
1808 Entry.IsSystemFile = Cache->IsSystemFile;
1809 Entry.IsTransient = Cache->IsTransient;
1810 Entry.BufferOverridden = Cache->BufferOverridden;
1811 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1812 File.getIncludeLoc().isInvalid();
1813 if (Cache->IsSystemFile)
1814 SortedFiles.push_back(Entry);
1815 else
1816 SortedFiles.push_front(Entry);
1817 }
1818
1819 unsigned UserFilesNum = 0;
1820 // Write out all of the input files.
1821 std::vector<uint64_t> InputFileOffsets;
1822 for (const auto &Entry : SortedFiles) {
1823 uint32_t &InputFileID = InputFileIDs[Entry.File];
1824 if (InputFileID != 0)
1825 continue; // already recorded this file.
1826
1827 // Record this entry's offset.
1828 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1829
1830 InputFileID = InputFileOffsets.size();
1831
1832 if (!Entry.IsSystemFile)
1833 ++UserFilesNum;
1834
1835 // Emit size/modification time for this file.
1836 // And whether this file was overridden.
1837 RecordData::value_type Record[] = {
1838 INPUT_FILE,
1839 InputFileOffsets.size(),
1840 (uint64_t)Entry.File->getSize(),
1841 (uint64_t)getTimestampForOutput(Entry.File),
1842 Entry.BufferOverridden,
1843 Entry.IsTransient,
1844 Entry.IsTopLevelModuleMap};
1845
1846 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1847 }
1848
1849 Stream.ExitBlock();
1850
1851 // Create input file offsets abbreviation.
1852 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1853 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1854 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1855 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1856 // input files
1857 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1858 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1859
1860 // Write input file offsets.
1861 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1862 InputFileOffsets.size(), UserFilesNum};
1863 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1864}
1865
1866//===----------------------------------------------------------------------===//
1867// Source Manager Serialization
1868//===----------------------------------------------------------------------===//
1869
1870/// Create an abbreviation for the SLocEntry that refers to a
1871/// file.
1872static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1873 using namespace llvm;
1874
1875 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1876 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1877 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1879 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1880 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1881 // FileEntry fields.
1882 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1883 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1884 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1885 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1886 return Stream.EmitAbbrev(std::move(Abbrev));
1887}
1888
1889/// Create an abbreviation for the SLocEntry that refers to a
1890/// buffer.
1891static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1892 using namespace llvm;
1893
1894 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1895 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1896 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1897 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1898 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1899 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1900 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1901 return Stream.EmitAbbrev(std::move(Abbrev));
1902}
1903
1904/// Create an abbreviation for the SLocEntry that refers to a
1905/// buffer's blob.
1906static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1907 bool Compressed) {
1908 using namespace llvm;
1909
1910 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1911 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1912 : SM_SLOC_BUFFER_BLOB));
1913 if (Compressed)
1914 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1915 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1916 return Stream.EmitAbbrev(std::move(Abbrev));
1917}
1918
1919/// Create an abbreviation for the SLocEntry that refers to a macro
1920/// expansion.
1921static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1922 using namespace llvm;
1923
1924 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1925 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1926 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1927 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1928 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1929 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1930 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1931 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1932 return Stream.EmitAbbrev(std::move(Abbrev));
1933}
1934
1935namespace {
1936
1937 // Trait used for the on-disk hash table of header search information.
1938 class HeaderFileInfoTrait {
1939 ASTWriter &Writer;
1940
1941 // Keep track of the framework names we've used during serialization.
1942 SmallVector<char, 128> FrameworkStringData;
1943 llvm::StringMap<unsigned> FrameworkNameOffset;
1944
1945 public:
1946 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1947
1948 struct key_type {
1949 StringRef Filename;
1950 off_t Size;
1951 time_t ModTime;
1952 };
1953 using key_type_ref = const key_type &;
1954
1955 using UnresolvedModule =
1956 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1957
1958 struct data_type {
1959 const HeaderFileInfo &HFI;
1960 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1961 UnresolvedModule Unresolved;
1962 };
1963 using data_type_ref = const data_type &;
1964
1965 using hash_value_type = unsigned;
1966 using offset_type = unsigned;
1967
1968 hash_value_type ComputeHash(key_type_ref key) {
1969 // The hash is based only on size/time of the file, so that the reader can
1970 // match even when symlinking or excess path elements ("foo/../", "../")
1971 // change the form of the name. However, complete path is still the key.
1972 return llvm::hash_combine(key.Size, key.ModTime);
1973 }
1974
1975 std::pair<unsigned, unsigned>
1976 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1977 using namespace llvm::support;
1978
1979 endian::Writer LE(Out, little);
1980 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1981 LE.write<uint16_t>(KeyLen);
1982 unsigned DataLen = 1 + 2 + 4 + 4;
1983 for (auto ModInfo : Data.KnownHeaders)
1984 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1985 DataLen += 4;
1986 if (Data.Unresolved.getPointer())
1987 DataLen += 4;
1988 LE.write<uint8_t>(DataLen);
1989 return std::make_pair(KeyLen, DataLen);
1990 }
1991
1992 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1993 using namespace llvm::support;
1994
1995 endian::Writer LE(Out, little);
1996 LE.write<uint64_t>(key.Size);
1997 KeyLen -= 8;
1998 LE.write<uint64_t>(key.ModTime);
1999 KeyLen -= 8;
2000 Out.write(key.Filename.data(), KeyLen);
2001 }
2002
2003 void EmitData(raw_ostream &Out, key_type_ref key,
2004 data_type_ref Data, unsigned DataLen) {
2005 using namespace llvm::support;
2006
2007 endian::Writer LE(Out, little);
2008 uint64_t Start = Out.tell(); (void)Start;
2009
2010 unsigned char Flags = (Data.HFI.isImport << 5)
2011 | (Data.HFI.isPragmaOnce << 4)
2012 | (Data.HFI.DirInfo << 1)
2013 | Data.HFI.IndexHeaderMapHeader;
2014 LE.write<uint8_t>(Flags);
2015 LE.write<uint16_t>(Data.HFI.NumIncludes);
2016
2017 if (!Data.HFI.ControllingMacro)
2018 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
2019 else
2020 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
2021
2022 unsigned Offset = 0;
2023 if (!Data.HFI.Framework.empty()) {
2024 // If this header refers into a framework, save the framework name.
2025 llvm::StringMap<unsigned>::iterator Pos
2026 = FrameworkNameOffset.find(Data.HFI.Framework);
2027 if (Pos == FrameworkNameOffset.end()) {
2028 Offset = FrameworkStringData.size() + 1;
2029 FrameworkStringData.append(Data.HFI.Framework.begin(),
2030 Data.HFI.Framework.end());
2031 FrameworkStringData.push_back(0);
2032
2033 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2034 } else
2035 Offset = Pos->second;
2036 }
2037 LE.write<uint32_t>(Offset);
2038
2039 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2040 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2041 uint32_t Value = (ModID << 2) | (unsigned)Role;
2042 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2042, __extension__ __PRETTY_FUNCTION__))
;
2043 LE.write<uint32_t>(Value);
2044 }
2045 };
2046
2047 // FIXME: If the header is excluded, we should write out some
2048 // record of that fact.
2049 for (auto ModInfo : Data.KnownHeaders)
2050 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2051 if (Data.Unresolved.getPointer())
2052 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2053
2054 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2054, __extension__ __PRETTY_FUNCTION__))
;
2055 }
2056
2057 const char *strings_begin() const { return FrameworkStringData.begin(); }
2058 const char *strings_end() const { return FrameworkStringData.end(); }
2059 };
2060
2061} // namespace
2062
2063/// Write the header search block for the list of files that
2064///
2065/// \param HS The header search structure to save.
2066void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2067 HeaderFileInfoTrait GeneratorTrait(*this);
2068 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2069 SmallVector<const char *, 4> SavedStrings;
2070 unsigned NumHeaderSearchEntries = 0;
2071
2072 // Find all unresolved headers for the current module. We generally will
2073 // have resolved them before we get here, but not necessarily: we might be
2074 // compiling a preprocessed module, where there is no requirement for the
2075 // original files to exist any more.
2076 const HeaderFileInfo Empty; // So we can take a reference.
2077 if (WritingModule) {
1
Assuming the condition is true
2
Taking true branch
2078 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2079 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
2080 Module *M = Worklist.pop_back_val();
2081 if (!M->isAvailable())
4
Assuming the condition is false
5
Taking false branch
2082 continue;
2083
2084 // Map to disk files where possible, to pick up any missing stat
2085 // information. This also means we don't need to check the unresolved
2086 // headers list when emitting resolved headers in the first loop below.
2087 // FIXME: It'd be preferable to avoid doing this if we were given
2088 // sufficient stat information in the module map.
2089 HS.getModuleMap().resolveHeaderDirectives(M);
2090
2091 // If the file didn't exist, we can still create a module if we were given
2092 // enough information in the module map.
2093 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
2094 // Check that we were given enough information to build a module
2095 // without this file existing on disk.
2096 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Assuming the condition is false
2097 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2098 << WritingModule->getFullModuleName() << U.Size.hasValue()
2099 << U.FileName;
2100 continue;
2101 }
2102
2103 // Form the effective relative pathname for the file.
2104 SmallString<128> Filename(M->Directory->getName());
2105 llvm::sys::path::append(Filename, U.FileName);
2106 PreparePathForOutput(Filename);
2107
2108 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
2109 SavedStrings.push_back(FilenameDup.data());
2110
2111 HeaderFileInfoTrait::key_type Key = {
2112 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2113 };
2114 HeaderFileInfoTrait::data_type Data = {
2115 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2116 };
2117 // FIXME: Deal with cases where there are multiple unresolved header
2118 // directives in different submodules for the same header.
2119 Generator.insert(Key, Data, GeneratorTrait);
2120 ++NumHeaderSearchEntries;
2121 }
2122
2123 Worklist.append(M->submodule_begin(), M->submodule_end());
2124 }
2125 }
2126
2127 SmallVector<const FileEntry *, 16> FilesByUID;
2128 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2129
2130 if (FilesByUID.size() > HS.header_file_size())
2131 FilesByUID.resize(HS.header_file_size());
2132
2133 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2134 const FileEntry *File = FilesByUID[UID];
2135 if (!File)
2136 continue;
2137
2138 // Get the file info. This will load info from the external source if
2139 // necessary. Skip emitting this file if we have no information on it
2140 // as a header file (in which case HFI will be null) or if it hasn't
2141 // changed since it was loaded. Also skip it if it's for a modular header
2142 // from a different module; in that case, we rely on the module(s)
2143 // containing the header to provide this information.
2144 const HeaderFileInfo *HFI =
2145 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2146 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2147 continue;
2148
2149 // Massage the file path into an appropriate form.
2150 StringRef Filename = File->getName();
2151 SmallString<128> FilenameTmp(Filename);
2152 if (PreparePathForOutput(FilenameTmp)) {
2153 // If we performed any translation on the file name at all, we need to
2154 // save this string, since the generator will refer to it later.
2155 Filename = StringRef(strdup(FilenameTmp.c_str()));
2156 SavedStrings.push_back(Filename.data());
2157 }
2158
2159 HeaderFileInfoTrait::key_type Key = {
2160 Filename, File->getSize(), getTimestampForOutput(File)
2161 };
2162 HeaderFileInfoTrait::data_type Data = {
2163 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2164 };
2165 Generator.insert(Key, Data, GeneratorTrait);
2166 ++NumHeaderSearchEntries;
2167 }
2168
2169 // Create the on-disk hash table in a buffer.
2170 SmallString<4096> TableData;
2171 uint32_t BucketOffset;
2172 {
2173 using namespace llvm::support;
2174
2175 llvm::raw_svector_ostream Out(TableData);
2176 // Make sure that no bucket is at offset 0
2177 endian::write<uint32_t>(Out, 0, little);
2178 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2179 }
2180
2181 // Create a blob abbreviation
2182 using namespace llvm;
2183
2184 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2185 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2186 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2187 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2188 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2189 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2190 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2191
2192 // Write the header search table
2193 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2194 NumHeaderSearchEntries, TableData.size()};
2195 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2196 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2197
2198 // Free all of the strings we had to duplicate.
2199 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2200 free(const_cast<char *>(SavedStrings[I]));
2201}
2202
2203static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2204 unsigned SLocBufferBlobCompressedAbbrv,
2205 unsigned SLocBufferBlobAbbrv) {
2206 using RecordDataType = ASTWriter::RecordData::value_type;
2207
2208 // Compress the buffer if possible. We expect that almost all PCM
2209 // consumers will not want its contents.
2210 SmallString<0> CompressedBuffer;
2211 if (llvm::zlib::isAvailable()) {
2212 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2213 if (!E) {
2214 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2215 Blob.size() - 1};
2216 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2217 CompressedBuffer);
2218 return;
2219 }
2220 llvm::consumeError(std::move(E));
2221 }
2222
2223 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2224 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2225}
2226
2227/// Writes the block containing the serialized form of the
2228/// source manager.
2229///
2230/// TODO: We should probably use an on-disk hash table (stored in a
2231/// blob), indexed based on the file name, so that we only create
2232/// entries for files that we actually need. In the common case (no
2233/// errors), we probably won't have to create file entries for any of
2234/// the files in the AST.
2235void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2236 const Preprocessor &PP) {
2237 RecordData Record;
2238
2239 // Enter the source manager block.
2240 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2241
2242 // Abbreviations for the various kinds of source-location entries.
2243 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2244 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2245 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2246 unsigned SLocBufferBlobCompressedAbbrv =
2247 CreateSLocBufferBlobAbbrev(Stream, true);
2248 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2249
2250 // Write out the source location entry table. We skip the first
2251 // entry, which is always the same dummy entry.
2252 std::vector<uint32_t> SLocEntryOffsets;
2253 RecordData PreloadSLocs;
2254 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2255 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2256 I != N; ++I) {
2257 // Get this source location entry.
2258 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2259 FileID FID = FileID::get(I);
2260 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2260, __extension__ __PRETTY_FUNCTION__))
;
2261
2262 // Record the offset of this source-location entry.
2263 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2264
2265 // Figure out which record code to use.
2266 unsigned Code;
2267 if (SLoc->isFile()) {
2268 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2269 if (Cache->OrigEntry) {
2270 Code = SM_SLOC_FILE_ENTRY;
2271 } else
2272 Code = SM_SLOC_BUFFER_ENTRY;
2273 } else
2274 Code = SM_SLOC_EXPANSION_ENTRY;
2275 Record.clear();
2276 Record.push_back(Code);
2277
2278 // Starting offset of this entry within this module, so skip the dummy.
2279 Record.push_back(SLoc->getOffset() - 2);
2280 if (SLoc->isFile()) {
2281 const SrcMgr::FileInfo &File = SLoc->getFile();
2282 AddSourceLocation(File.getIncludeLoc(), Record);
2283 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2284 Record.push_back(File.hasLineDirectives());
2285
2286 const SrcMgr::ContentCache *Content = File.getContentCache();
2287 bool EmitBlob = false;
2288 if (Content->OrigEntry) {
2289 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2290, __extension__ __PRETTY_FUNCTION__))
2290 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2290, __extension__ __PRETTY_FUNCTION__))
;
2291
2292 // The source location entry is a file. Emit input file ID.
2293 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2293, __extension__ __PRETTY_FUNCTION__))
;
2294 Record.push_back(InputFileIDs[Content->OrigEntry]);
2295
2296 Record.push_back(File.NumCreatedFIDs);
2297
2298 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2299 if (FDI != FileDeclIDs.end()) {
2300 Record.push_back(FDI->second->FirstDeclIndex);
2301 Record.push_back(FDI->second->DeclIDs.size());
2302 } else {
2303 Record.push_back(0);
2304 Record.push_back(0);
2305 }
2306
2307 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2308
2309 if (Content->BufferOverridden || Content->IsTransient)
2310 EmitBlob = true;
2311 } else {
2312 // The source location entry is a buffer. The blob associated
2313 // with this entry contains the contents of the buffer.
2314
2315 // We add one to the size so that we capture the trailing NULL
2316 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2317 // the reader side).
2318 const llvm::MemoryBuffer *Buffer
2319 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2320 StringRef Name = Buffer->getBufferIdentifier();
2321 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2322 StringRef(Name.data(), Name.size() + 1));
2323 EmitBlob = true;
2324
2325 if (Name == "<built-in>")
2326 PreloadSLocs.push_back(SLocEntryOffsets.size());
2327 }
2328
2329 if (EmitBlob) {
2330 // Include the implicit terminating null character in the on-disk buffer
2331 // if we're writing it uncompressed.
2332 const llvm::MemoryBuffer *Buffer =
2333 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2334 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2335 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2336 SLocBufferBlobAbbrv);
2337 }
2338 } else {
2339 // The source location entry is a macro expansion.
2340 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2341 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2342 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2343 AddSourceLocation(Expansion.isMacroArgExpansion()
2344 ? SourceLocation()
2345 : Expansion.getExpansionLocEnd(),
2346 Record);
2347 Record.push_back(Expansion.isExpansionTokenRange());
2348
2349 // Compute the token length for this macro expansion.
2350 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2351 if (I + 1 != N)
2352 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2353 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2354 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2355 }
2356 }
2357
2358 Stream.ExitBlock();
2359
2360 if (SLocEntryOffsets.empty())
2361 return;
2362
2363 // Write the source-location offsets table into the AST block. This
2364 // table is used for lazily loading source-location information.
2365 using namespace llvm;
2366
2367 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2368 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2369 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2370 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2371 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2372 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2373 {
2374 RecordData::value_type Record[] = {
2375 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2376 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2377 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2378 bytes(SLocEntryOffsets));
2379 }
2380 // Write the source location entry preloads array, telling the AST
2381 // reader which source locations entries it should load eagerly.
2382 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2383
2384 // Write the line table. It depends on remapping working, so it must come
2385 // after the source location offsets.
2386 if (SourceMgr.hasLineTable()) {
2387 LineTableInfo &LineTable = SourceMgr.getLineTable();
2388
2389 Record.clear();
2390
2391 // Emit the needed file names.
2392 llvm::DenseMap<int, int> FilenameMap;
2393 FilenameMap[-1] = -1; // For unspecified filenames.
2394 for (const auto &L : LineTable) {
2395 if (L.first.ID < 0)
2396 continue;
2397 for (auto &LE : L.second) {
2398 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2399 FilenameMap.size() - 1)).second)
2400 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2401 }
2402 }
2403 Record.push_back(0);
2404
2405 // Emit the line entries
2406 for (const auto &L : LineTable) {
2407 // Only emit entries for local files.
2408 if (L.first.ID < 0)
2409 continue;
2410
2411 // Emit the file ID
2412 Record.push_back(L.first.ID);
2413
2414 // Emit the line entries
2415 Record.push_back(L.second.size());
2416 for (const auto &LE : L.second) {
2417 Record.push_back(LE.FileOffset);
2418 Record.push_back(LE.LineNo);
2419 Record.push_back(FilenameMap[LE.FilenameID]);
2420 Record.push_back((unsigned)LE.FileKind);
2421 Record.push_back(LE.IncludeOffset);
2422 }
2423 }
2424
2425 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2426 }
2427}
2428
2429//===----------------------------------------------------------------------===//
2430// Preprocessor Serialization
2431//===----------------------------------------------------------------------===//
2432
2433static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2434 const Preprocessor &PP) {
2435 if (MacroInfo *MI = MD->getMacroInfo())
2436 if (MI->isBuiltinMacro())
2437 return true;
2438
2439 if (IsModule) {
2440 SourceLocation Loc = MD->getLocation();
2441 if (Loc.isInvalid())
2442 return true;
2443 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2444 return true;
2445 }
2446
2447 return false;
2448}
2449
2450/// Writes the block containing the serialized form of the
2451/// preprocessor.
2452void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2453 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2454 if (PPRec)
2455 WritePreprocessorDetail(*PPRec);
2456
2457 RecordData Record;
2458 RecordData ModuleMacroRecord;
2459
2460 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2461 if (PP.getCounterValue() != 0) {
2462 RecordData::value_type Record[] = {PP.getCounterValue()};
2463 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2464 }
2465
2466 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2467 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2467, __extension__ __PRETTY_FUNCTION__))
;
2468 auto SkipInfo = PP.getPreambleSkipInfo();
2469 if (SkipInfo.hasValue()) {
2470 Record.push_back(true);
2471 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2472 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2473 Record.push_back(SkipInfo->FoundNonSkipPortion);
2474 Record.push_back(SkipInfo->FoundElse);
2475 AddSourceLocation(SkipInfo->ElseLoc, Record);
2476 } else {
2477 Record.push_back(false);
2478 }
2479 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2480 AddSourceLocation(Cond.IfLoc, Record);
2481 Record.push_back(Cond.WasSkipping);
2482 Record.push_back(Cond.FoundNonSkip);
2483 Record.push_back(Cond.FoundElse);
2484 }
2485 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2486 Record.clear();
2487 }
2488
2489 // Enter the preprocessor block.
2490 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2491
2492 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2493 // FIXME: Include a location for the use, and say which one was used.
2494 if (PP.SawDateOrTime())
2495 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2496
2497 // Loop over all the macro directives that are live at the end of the file,
2498 // emitting each to the PP section.
2499
2500 // Construct the list of identifiers with macro directives that need to be
2501 // serialized.
2502 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2503 for (auto &Id : PP.getIdentifierTable())
2504 if (Id.second->hadMacroDefinition() &&
2505 (!Id.second->isFromAST() ||
2506 Id.second->hasChangedSinceDeserialization()))
2507 MacroIdentifiers.push_back(Id.second);
2508 // Sort the set of macro definitions that need to be serialized by the
2509 // name of the macro, to provide a stable ordering.
2510 llvm::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2511 llvm::less_ptr<IdentifierInfo>());
2512
2513 // Emit the macro directives as a list and associate the offset with the
2514 // identifier they belong to.
2515 for (const IdentifierInfo *Name : MacroIdentifiers) {
2516 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2517 auto StartOffset = Stream.GetCurrentBitNo();
2518
2519 // Emit the macro directives in reverse source order.
2520 for (; MD; MD = MD->getPrevious()) {
2521 // Once we hit an ignored macro, we're done: the rest of the chain
2522 // will all be ignored macros.
2523 if (shouldIgnoreMacro(MD, IsModule, PP))
2524 break;
2525
2526 AddSourceLocation(MD->getLocation(), Record);
2527 Record.push_back(MD->getKind());
2528 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2529 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2530 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2531 Record.push_back(VisMD->isPublic());
2532 }
2533 }
2534
2535 // Write out any exported module macros.
2536 bool EmittedModuleMacros = false;
2537 // We write out exported module macros for PCH as well.
2538 auto Leafs = PP.getLeafModuleMacros(Name);
2539 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2540 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2541 while (!Worklist.empty()) {
2542 auto *Macro = Worklist.pop_back_val();
2543
2544 // Emit a record indicating this submodule exports this macro.
2545 ModuleMacroRecord.push_back(
2546 getSubmoduleID(Macro->getOwningModule()));
2547 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2548 for (auto *M : Macro->overrides())
2549 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2550
2551 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2552 ModuleMacroRecord.clear();
2553
2554 // Enqueue overridden macros once we've visited all their ancestors.
2555 for (auto *M : Macro->overrides())
2556 if (++Visits[M] == M->getNumOverridingMacros())
2557 Worklist.push_back(M);
2558
2559 EmittedModuleMacros = true;
2560 }
2561
2562 if (Record.empty() && !EmittedModuleMacros)
2563 continue;
2564
2565 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2566 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2567 Record.clear();
2568 }
2569
2570 /// Offsets of each of the macros into the bitstream, indexed by
2571 /// the local macro ID
2572 ///
2573 /// For each identifier that is associated with a macro, this map
2574 /// provides the offset into the bitstream where that macro is
2575 /// defined.
2576 std::vector<uint32_t> MacroOffsets;
2577
2578 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2579 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2580 MacroInfo *MI = MacroInfosToEmit[I].MI;
2581 MacroID ID = MacroInfosToEmit[I].ID;
2582
2583 if (ID < FirstMacroID) {
2584 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")(static_cast <bool> (0 && "Loaded MacroInfo entered MacroInfosToEmit ?"
) ? void (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2584, __extension__ __PRETTY_FUNCTION__))
;
2585 continue;
2586 }
2587
2588 // Record the local offset of this macro.
2589 unsigned Index = ID - FirstMacroID;
2590 if (Index == MacroOffsets.size())
2591 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2592 else {
2593 if (Index > MacroOffsets.size())
2594 MacroOffsets.resize(Index + 1);
2595
2596 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2597 }
2598
2599 AddIdentifierRef(Name, Record);
2600 AddSourceLocation(MI->getDefinitionLoc(), Record);
2601 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2602 Record.push_back(MI->isUsed());
2603 Record.push_back(MI->isUsedForHeaderGuard());
2604 unsigned Code;
2605 if (MI->isObjectLike()) {
2606 Code = PP_MACRO_OBJECT_LIKE;
2607 } else {
2608 Code = PP_MACRO_FUNCTION_LIKE;
2609
2610 Record.push_back(MI->isC99Varargs());
2611 Record.push_back(MI->isGNUVarargs());
2612 Record.push_back(MI->hasCommaPasting());
2613 Record.push_back(MI->getNumParams());
2614 for (const IdentifierInfo *Param : MI->params())
2615 AddIdentifierRef(Param, Record);
2616 }
2617
2618 // If we have a detailed preprocessing record, record the macro definition
2619 // ID that corresponds to this macro.
2620 if (PPRec)
2621 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2622
2623 Stream.EmitRecord(Code, Record);
2624 Record.clear();
2625
2626 // Emit the tokens array.
2627 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2628 // Note that we know that the preprocessor does not have any annotation
2629 // tokens in it because they are created by the parser, and thus can't
2630 // be in a macro definition.
2631 const Token &Tok = MI->getReplacementToken(TokNo);
2632 AddToken(Tok, Record);
2633 Stream.EmitRecord(PP_TOKEN, Record);
2634 Record.clear();
2635 }
2636 ++NumMacros;
2637 }
2638
2639 Stream.ExitBlock();
2640
2641 // Write the offsets table for macro IDs.
2642 using namespace llvm;
2643
2644 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2645 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2646 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2647 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2648 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2649
2650 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2651 {
2652 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2653 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2654 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2655 }
2656}
2657
2658void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2659 if (PPRec.local_begin() == PPRec.local_end())
2660 return;
2661
2662 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2663
2664 // Enter the preprocessor block.
2665 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2666
2667 // If the preprocessor has a preprocessing record, emit it.
2668 unsigned NumPreprocessingRecords = 0;
2669 using namespace llvm;
2670
2671 // Set up the abbreviation for
2672 unsigned InclusionAbbrev = 0;
2673 {
2674 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2675 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2676 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2677 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2678 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2679 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2680 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2681 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2682 }
2683
2684 unsigned FirstPreprocessorEntityID
2685 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2686 + NUM_PREDEF_PP_ENTITY_IDS;
2687 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2688 RecordData Record;
2689 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2690 EEnd = PPRec.local_end();
2691 E != EEnd;
2692 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2693 Record.clear();
2694
2695 PreprocessedEntityOffsets.push_back(
2696 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2697
2698 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2699 // Record this macro definition's ID.
2700 MacroDefinitions[MD] = NextPreprocessorEntityID;
2701
2702 AddIdentifierRef(MD->getName(), Record);
2703 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2704 continue;
2705 }
2706
2707 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2708 Record.push_back(ME->isBuiltinMacro());
2709 if (ME->isBuiltinMacro())
2710 AddIdentifierRef(ME->getName(), Record);
2711 else
2712 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2713 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2714 continue;
2715 }
2716
2717 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2718 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2719 Record.push_back(ID->getFileName().size());
2720 Record.push_back(ID->wasInQuotes());
2721 Record.push_back(static_cast<unsigned>(ID->getKind()));
2722 Record.push_back(ID->importedModule());
2723 SmallString<64> Buffer;
2724 Buffer += ID->getFileName();
2725 // Check that the FileEntry is not null because it was not resolved and
2726 // we create a PCH even with compiler errors.
2727 if (ID->getFile())
2728 Buffer += ID->getFile()->getName();
2729 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2730 continue;
2731 }
2732
2733 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2733)
;
2734 }
2735 Stream.ExitBlock();
2736
2737 // Write the offsets table for the preprocessing record.
2738 if (NumPreprocessingRecords > 0) {
2739 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2739, __extension__ __PRETTY_FUNCTION__))
;
2740
2741 // Write the offsets table for identifier IDs.
2742 using namespace llvm;
2743
2744 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2745 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2746 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2747 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2748 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2749
2750 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2751 FirstPreprocessorEntityID -
2752 NUM_PREDEF_PP_ENTITY_IDS};
2753 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2754 bytes(PreprocessedEntityOffsets));
2755 }
2756
2757 // Write the skipped region table for the preprocessing record.
2758 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2759 if (SkippedRanges.size() > 0) {
2760 std::vector<PPSkippedRange> SerializedSkippedRanges;
2761 SerializedSkippedRanges.reserve(SkippedRanges.size());
2762 for (auto const& Range : SkippedRanges)
2763 SerializedSkippedRanges.emplace_back(Range);
2764
2765 using namespace llvm;
2766 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2767 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2768 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2769 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2770
2771 Record.clear();
2772 Record.push_back(PPD_SKIPPED_RANGES);
2773 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2774 bytes(SerializedSkippedRanges));
2775 }
2776}
2777
2778unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2779 if (!Mod)
2780 return 0;
2781
2782 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2783 if (Known != SubmoduleIDs.end())
2784 return Known->second;
2785
2786 auto *Top = Mod->getTopLevelModule();
2787 if (Top != WritingModule &&
2788 (getLangOpts().CompilingPCH ||
2789 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2790 return 0;
2791
2792 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2793}
2794
2795unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2796 // FIXME: This can easily happen, if we have a reference to a submodule that
2797 // did not result in us loading a module file for that submodule. For
2798 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2799 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2800 assert((ID || !Mod) &&(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2801, __extension__ __PRETTY_FUNCTION__))
2801 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2801, __extension__ __PRETTY_FUNCTION__))
;
2802 return ID;
2803}
2804
2805/// Compute the number of modules within the given tree (including the
2806/// given module).
2807static unsigned getNumberOfModules(Module *Mod) {
2808 unsigned ChildModules = 0;
2809 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2810 Sub != SubEnd; ++Sub)
2811 ChildModules += getNumberOfModules(*Sub);
2812
2813 return ChildModules + 1;
2814}
2815
2816void ASTWriter::WriteSubmodules(Module *WritingModule) {
2817 // Enter the submodule description block.
2818 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2819
2820 // Write the abbreviations needed for the submodules block.
2821 using namespace llvm;
2822
2823 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2824 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2825 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2826 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2827 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2828 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2829 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2830 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2831 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2832 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2833 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2834 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2835 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2836 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2837 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2838 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2839
2840 Abbrev = std::make_shared<BitCodeAbbrev>();
2841 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2842 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2843 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2844
2845 Abbrev = std::make_shared<BitCodeAbbrev>();
2846 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2847 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2848 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2849
2850 Abbrev = std::make_shared<BitCodeAbbrev>();
2851 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2852 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2853 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2854
2855 Abbrev = std::make_shared<BitCodeAbbrev>();
2856 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2857 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2858 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2859
2860 Abbrev = std::make_shared<BitCodeAbbrev>();
2861 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2862 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2863 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2864 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2865
2866 Abbrev = std::make_shared<BitCodeAbbrev>();
2867 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2868 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2869 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2870
2871 Abbrev = std::make_shared<BitCodeAbbrev>();
2872 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2874 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2875
2876 Abbrev = std::make_shared<BitCodeAbbrev>();
2877 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2879 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2880
2881 Abbrev = std::make_shared<BitCodeAbbrev>();
2882 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2883 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2884 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2885
2886 Abbrev = std::make_shared<BitCodeAbbrev>();
2887 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2888 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2889 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2890 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2891
2892 Abbrev = std::make_shared<BitCodeAbbrev>();
2893 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2894 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2895 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2896
2897 Abbrev = std::make_shared<BitCodeAbbrev>();
2898 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2899 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2900 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2901 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2902
2903 Abbrev = std::make_shared<BitCodeAbbrev>();
2904 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2905 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2906 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2907
2908 // Write the submodule metadata block.
2909 RecordData::value_type Record[] = {
2910 getNumberOfModules(WritingModule),
2911 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2912 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2913
2914 // Write all of the submodules.
2915 std::queue<Module *> Q;
2916 Q.push(WritingModule);
2917 while (!Q.empty()) {
2918 Module *Mod = Q.front();
2919 Q.pop();
2920 unsigned ID = getSubmoduleID(Mod);
2921
2922 uint64_t ParentID = 0;
2923 if (Mod->Parent) {
2924 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?")(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2924, __extension__ __PRETTY_FUNCTION__))
;
2925 ParentID = SubmoduleIDs[Mod->Parent];
2926 }
2927
2928 // Emit the definition of the block.
2929 {
2930 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2931 ID,
2932 ParentID,
2933 (RecordData::value_type)Mod->Kind,
2934 Mod->IsFramework,
2935 Mod->IsExplicit,
2936 Mod->IsSystem,
2937 Mod->IsExternC,
2938 Mod->InferSubmodules,
2939 Mod->InferExplicitSubmodules,
2940 Mod->InferExportWildcard,
2941 Mod->ConfigMacrosExhaustive,
2942 Mod->ModuleMapIsPrivate};
2943 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2944 }
2945
2946 // Emit the requirements.
2947 for (const auto &R : Mod->Requirements) {
2948 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2949 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2950 }
2951
2952 // Emit the umbrella header, if there is one.
2953 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2954 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2955 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2956 UmbrellaHeader.NameAsWritten);
2957 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2958 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2959 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2960 UmbrellaDir.NameAsWritten);
2961 }
2962
2963 // Emit the headers.
2964 struct {
2965 unsigned RecordKind;
2966 unsigned Abbrev;
2967 Module::HeaderKind HeaderKind;
2968 } HeaderLists[] = {
2969 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2970 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2971 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2972 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2973 Module::HK_PrivateTextual},
2974 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2975 };
2976 for (auto &HL : HeaderLists) {
2977 RecordData::value_type Record[] = {HL.RecordKind};
2978 for (auto &H : Mod->Headers[HL.HeaderKind])
2979 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2980 }
2981
2982 // Emit the top headers.
2983 {
2984 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2985 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2986 for (auto *H : TopHeaders)
2987 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2988 }
2989
2990 // Emit the imports.
2991 if (!Mod->Imports.empty()) {
2992 RecordData Record;
2993 for (auto *I : Mod->Imports)
2994 Record.push_back(getSubmoduleID(I));
2995 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2996 }
2997
2998 // Emit the exports.
2999 if (!Mod->Exports.empty()) {
3000 RecordData Record;
3001 for (const auto &E : Mod->Exports) {
3002 // FIXME: This may fail; we don't require that all exported modules
3003 // are local or imported.
3004 Record.push_back(getSubmoduleID(E.getPointer()));
3005 Record.push_back(E.getInt());
3006 }
3007 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
3008 }
3009
3010 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
3011 // Might be unnecessary as use declarations are only used to build the
3012 // module itself.
3013
3014 // Emit the link libraries.
3015 for (const auto &LL : Mod->LinkLibraries) {
3016 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
3017 LL.IsFramework};
3018 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
3019 }
3020
3021 // Emit the conflicts.
3022 for (const auto &C : Mod->Conflicts) {
3023 // FIXME: This may fail; we don't require that all conflicting modules
3024 // are local or imported.
3025 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3026 getSubmoduleID(C.Other)};
3027 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3028 }
3029
3030 // Emit the configuration macros.
3031 for (const auto &CM : Mod->ConfigMacros) {
3032 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3033 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3034 }
3035
3036 // Emit the initializers, if any.
3037 RecordData Inits;
3038 for (Decl *D : Context->getModuleInitializers(Mod))
3039 Inits.push_back(GetDeclRef(D));
3040 if (!Inits.empty())
3041 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3042
3043 // Emit the name of the re-exported module, if any.
3044 if (!Mod->ExportAsModule.empty()) {
3045 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3046 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3047 }
3048
3049 // Queue up the submodules of this module.
3050 for (auto *M : Mod->submodules())
3051 Q.push(M);
3052 }
3053
3054 Stream.ExitBlock();
3055
3056 assert((NextSubmoduleID - FirstSubmoduleID ==(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __extension__ __PRETTY_FUNCTION__))
3057 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __extension__ __PRETTY_FUNCTION__))
3058 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __extension__ __PRETTY_FUNCTION__))
3059 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __extension__ __PRETTY_FUNCTION__))
;
3060}
3061
3062void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3063 bool isModule) {
3064 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3065 DiagStateIDMap;
3066 unsigned CurrID = 0;
3067 RecordData Record;
3068
3069 auto EncodeDiagStateFlags =
3070 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3071 unsigned Result = (unsigned)DS->ExtBehavior;
3072 for (unsigned Val :
3073 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3074 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3075 (unsigned)DS->SuppressSystemWarnings})
3076 Result = (Result << 1) | Val;
3077 return Result;
3078 };
3079
3080 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3081 Record.push_back(Flags);
3082
3083 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3084 bool IncludeNonPragmaStates) {
3085 // Ensure that the diagnostic state wasn't modified since it was created.
3086 // We will not correctly round-trip this information otherwise.
3087 assert(Flags == EncodeDiagStateFlags(State) &&(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3088, __extension__ __PRETTY_FUNCTION__))
3088 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3088, __extension__ __PRETTY_FUNCTION__))
;
3089
3090 unsigned &DiagStateID = DiagStateIDMap[State];
3091 Record.push_back(DiagStateID);
3092
3093 if (DiagStateID == 0) {
3094 DiagStateID = ++CurrID;
3095
3096 // Add a placeholder for the number of mappings.
3097 auto SizeIdx = Record.size();
3098 Record.emplace_back();
3099 for (const auto &I : *State) {
3100 if (I.second.isPragma() || IncludeNonPragmaStates) {
3101 Record.push_back(I.first);
3102 Record.push_back(I.second.serialize());
3103 }
3104 }
3105 // Update the placeholder.
3106 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3107 }
3108 };
3109
3110 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3111
3112 // Reserve a spot for the number of locations with state transitions.
3113 auto NumLocationsIdx = Record.size();
3114 Record.emplace_back();
3115
3116 // Emit the state transitions.
3117 unsigned NumLocations = 0;
3118 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3119 if (!FileIDAndFile.first.isValid() ||
3120 !FileIDAndFile.second.HasLocalTransitions)
3121 continue;
3122 ++NumLocations;
3123
3124 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3125 assert(!Loc.isInvalid() && "start loc for valid FileID is invalid")(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3125, __extension__ __PRETTY_FUNCTION__))
;
3126 AddSourceLocation(Loc, Record);
3127
3128 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3129 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3130 Record.push_back(StatePoint.Offset);
3131 AddDiagState(StatePoint.State, false);
3132 }
3133 }
3134
3135 // Backpatch the number of locations.
3136 Record[NumLocationsIdx] = NumLocations;
3137
3138 // Emit CurDiagStateLoc. Do it last in order to match source order.
3139 //
3140 // This also protects against a hypothetical corner case with simulating
3141 // -Werror settings for implicit modules in the ASTReader, where reading
3142 // CurDiagState out of context could change whether warning pragmas are
3143 // treated as errors.
3144 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3145 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3146
3147 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3148}
3149
3150//===----------------------------------------------------------------------===//
3151// Type Serialization
3152//===----------------------------------------------------------------------===//
3153
3154/// Write the representation of a type to the AST stream.
3155void ASTWriter::WriteType(QualType T) {
3156 TypeIdx &IdxRef = TypeIdxs[T];
3157 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3158 IdxRef = TypeIdx(NextTypeID++);
3159 TypeIdx Idx = IdxRef;
3160
3161 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST")(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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3161, __extension__ __PRETTY_FUNCTION__))
;
3162
3163 RecordData Record;
3164
3165 // Emit the type's representation.
3166 ASTTypeWriter W(*this, Record);
3167 W.Visit(T);
3168 uint64_t Offset = W.Emit();
3169
3170 // Record the offset for this type.
3171 unsigned Index = Idx.getIndex() - FirstTypeID;
3172 if (TypeOffsets.size() == Index)
3173 TypeOffsets.push_back(Offset);
3174 else if (TypeOffsets.size() < Index) {
3175 TypeOffsets.resize(Index + 1);
3176 TypeOffsets[Index] = Offset;
3177 } else {
3178 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3178)
;
3179 }
3180}
3181
3182//===----------------------------------------------------------------------===//
3183// Declaration Serialization
3184//===----------------------------------------------------------------------===//
3185
3186/// Write the block containing all of the declaration IDs
3187/// lexically declared within the given DeclContext.
3188///
3189/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3190/// bitstream, or 0 if no block was written.
3191uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3192 DeclContext *DC) {
3193 if (DC->decls_empty())
3194 return 0;
3195
3196 uint64_t Offset = Stream.GetCurrentBitNo();
3197 SmallVector<uint32_t, 128> KindDeclPairs;
3198 for (const auto *D : DC->decls()) {
3199 KindDeclPairs.push_back(D->getKind());
3200 KindDeclPairs.push_back(GetDeclRef(D));
3201 }
3202
3203 ++NumLexicalDeclContexts;
3204 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3205 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3206 bytes(KindDeclPairs));
3207 return Offset;
3208}
3209
3210void ASTWriter::WriteTypeDeclOffsets() {
3211 using namespace llvm;
3212
3213 // Write the type offsets array
3214 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3215 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3217 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3218 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3219 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3220 {
3221 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3222 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3223 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3224 }
3225
3226 // Write the declaration offsets array
3227 Abbrev = std::make_shared<BitCodeAbbrev>();
3228 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3229 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3230 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3231 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3232 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3233 {
3234 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3235 FirstDeclID - NUM_PREDEF_DECL_IDS};
3236 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3237 }
3238}
3239
3240void ASTWriter::WriteFileDeclIDsMap() {
3241 using namespace llvm;
3242
3243 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3244 FileDeclIDs.begin(), FileDeclIDs.end());
3245 llvm::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3246 llvm::less_first());
3247
3248 // Join the vectors of DeclIDs from all files.
3249 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3250 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3251 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3252 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3253 for (auto &LocDeclEntry : Info.DeclIDs)
3254 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3255 }
3256
3257 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3258 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3259 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3260 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3261 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3262 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3263 FileGroupedDeclIDs.size()};
3264 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3265}
3266
3267void ASTWriter::WriteComments() {
3268 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3269 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3270 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3271 return;
3272 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3273 RecordData Record;
3274 for (const auto *I : RawComments) {
3275 Record.clear();
3276 AddSourceRange(I->getSourceRange(), Record);
3277 Record.push_back(I->getKind());
3278 Record.push_back(I->isTrailingComment());
3279 Record.push_back(I->isAlmostTrailingComment());
3280 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3281 }
3282}
3283
3284//===----------------------------------------------------------------------===//
3285// Global Method Pool and Selector Serialization
3286//===----------------------------------------------------------------------===//
3287
3288namespace {
3289
3290// Trait used for the on-disk hash table used in the method pool.
3291class ASTMethodPoolTrait {
3292 ASTWriter &Writer;
3293
3294public:
3295 using key_type = Selector;
3296 using key_type_ref = key_type;
3297
3298 struct data_type {
3299 SelectorID ID;
3300 ObjCMethodList Instance, Factory;
3301 };
3302 using data_type_ref = const data_type &;
3303
3304 using hash_value_type = unsigned;
3305 using offset_type = unsigned;
3306
3307 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3308
3309 static hash_value_type ComputeHash(Selector Sel) {
3310 return serialization::ComputeHash(Sel);
3311 }
3312
3313 std::pair<unsigned, unsigned>
3314 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3315 data_type_ref Methods) {
3316 using namespace llvm::support;
3317
3318 endian::Writer LE(Out, little);
3319 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3320 LE.write<uint16_t>(KeyLen);
3321 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3322 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3323 Method = Method->getNext())
3324 if (Method->getMethod())
3325 DataLen += 4;
3326 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3327 Method = Method->getNext())
3328 if (Method->getMethod())
3329 DataLen += 4;
3330 LE.write<uint16_t>(DataLen);
3331 return std::make_pair(KeyLen, DataLen);
3332 }
3333
3334 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3335 using namespace llvm::support;
3336
3337 endian::Writer LE(Out, little);
3338 uint64_t Start = Out.tell();
3339 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3339, __extension__ __PRETTY_FUNCTION__))
;
3340 Writer.SetSelectorOffset(Sel, Start);
3341 unsigned N = Sel.getNumArgs();
3342 LE.write<uint16_t>(N);
3343 if (N == 0)
3344 N = 1;
3345 for (unsigned I = 0; I != N; ++I)
3346 LE.write<uint32_t>(
3347 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3348 }
3349
3350 void EmitData(raw_ostream& Out, key_type_ref,
3351 data_type_ref Methods, unsigned DataLen) {
3352 using namespace llvm::support;
3353
3354 endian::Writer LE(Out, little);
3355 uint64_t Start = Out.tell(); (void)Start;
3356 LE.write<uint32_t>(Methods.ID);
3357 unsigned NumInstanceMethods = 0;
3358 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3359 Method = Method->getNext())
3360 if (Method->getMethod())
3361 ++NumInstanceMethods;
3362
3363 unsigned NumFactoryMethods = 0;
3364 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3365 Method = Method->getNext())
3366 if (Method->getMethod())
3367 ++NumFactoryMethods;
3368
3369 unsigned InstanceBits = Methods.Instance.getBits();
3370 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3370, __extension__ __PRETTY_FUNCTION__))
;
3371 unsigned InstanceHasMoreThanOneDeclBit =
3372 Methods.Instance.hasMoreThanOneDecl();
3373 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3374 (InstanceHasMoreThanOneDeclBit << 2) |
3375 InstanceBits;
3376 unsigned FactoryBits = Methods.Factory.getBits();
3377 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3377, __extension__ __PRETTY_FUNCTION__))
;
3378 unsigned FactoryHasMoreThanOneDeclBit =
3379 Methods.Factory.hasMoreThanOneDecl();
3380 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3381 (FactoryHasMoreThanOneDeclBit << 2) |
3382 FactoryBits;
3383 LE.write<uint16_t>(FullInstanceBits);
3384 LE.write<uint16_t>(FullFactoryBits);
3385 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3386 Method = Method->getNext())
3387 if (Method->getMethod())
3388 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3389 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3390 Method = Method->getNext())
3391 if (Method->getMethod())
3392 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3393
3394 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3394, __extension__ __PRETTY_FUNCTION__))
;
3395 }
3396};
3397
3398} // namespace
3399
3400/// Write ObjC data: selectors and the method pool.
3401///
3402/// The method pool contains both instance and factory methods, stored
3403/// in an on-disk hash table indexed by the selector. The hash table also
3404/// contains an empty entry for every other selector known to Sema.
3405void ASTWriter::WriteSelectors(Sema &SemaRef) {
3406 using namespace llvm;
3407
3408 // Do we have to do anything at all?
3409 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3410 return;
3411 unsigned NumTableEntries = 0;
3412 // Create and write out the blob that contains selectors and the method pool.
3413 {
3414 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3415 ASTMethodPoolTrait Trait(*this);
3416
3417 // Create the on-disk hash table representation. We walk through every
3418 // selector we've seen and look it up in the method pool.
3419 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3420 for (auto &SelectorAndID : SelectorIDs) {
3421 Selector S = SelectorAndID.first;
3422 SelectorID ID = SelectorAndID.second;
3423 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3424 ASTMethodPoolTrait::data_type Data = {
3425 ID,
3426 ObjCMethodList(),
3427 ObjCMethodList()
3428 };
3429 if (F != SemaRef.MethodPool.end()) {
3430 Data.Instance = F->second.first;
3431 Data.Factory = F->second.second;
3432 }
3433 // Only write this selector if it's not in an existing AST or something
3434 // changed.
3435 if (Chain && ID < FirstSelectorID) {
3436 // Selector already exists. Did it change?
3437 bool changed = false;
3438 for (ObjCMethodList *M = &Data.Instance;
3439 !changed && M && M->getMethod(); M = M->getNext()) {
3440 if (!M->getMethod()->isFromASTFile())
3441 changed = true;
3442 }
3443 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3444 M = M->getNext()) {
3445 if (!M->getMethod()->isFromASTFile())
3446 changed = true;
3447 }
3448 if (!changed)
3449 continue;
3450 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3451 // A new method pool entry.
3452 ++NumTableEntries;
3453 }
3454 Generator.insert(S, Data, Trait);
3455 }
3456
3457 // Create the on-disk hash table in a buffer.
3458 SmallString<4096> MethodPool;
3459 uint32_t BucketOffset;
3460 {
3461 using namespace llvm::support;
3462
3463 ASTMethodPoolTrait Trait(*this);
3464 llvm::raw_svector_ostream Out(MethodPool);
3465 // Make sure that no bucket is at offset 0
3466 endian::write<uint32_t>(Out, 0, little);
3467 BucketOffset = Generator.Emit(Out, Trait);
3468 }
3469
3470 // Create a blob abbreviation
3471 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3472 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3473 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3474 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3476 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3477
3478 // Write the method pool
3479 {
3480 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3481 NumTableEntries};
3482 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3483 }
3484
3485 // Create a blob abbreviation for the selector table offsets.
3486 Abbrev = std::make_shared<BitCodeAbbrev>();
3487 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3488 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3489 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3490 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3491 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3492
3493 // Write the selector offsets table.
3494 {
3495 RecordData::value_type Record[] = {
3496 SELECTOR_OFFSETS, SelectorOffsets.size(),
3497 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3498 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3499 bytes(SelectorOffsets));
3500 }
3501 }
3502}
3503
3504/// Write the selectors referenced in @selector expression into AST file.
3505void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3506 using namespace llvm;
3507
3508 if (SemaRef.ReferencedSelectors.empty())
3509 return;
3510
3511 RecordData Record;
3512 ASTRecordWriter Writer(*this, Record);
3513
3514 // Note: this writes out all references even for a dependent AST. But it is
3515 // very tricky to fix, and given that @selector shouldn't really appear in
3516 // headers, probably not worth it. It's not a correctness issue.
3517 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3518 Selector Sel = SelectorAndLocation.first;
3519 SourceLocation Loc = SelectorAndLocation.second;
3520 Writer.AddSelectorRef(Sel);
3521 Writer.AddSourceLocation(Loc);
3522 }
3523 Writer.Emit(REFERENCED_SELECTOR_POOL);
3524}
3525
3526//===----------------------------------------------------------------------===//
3527// Identifier Table Serialization
3528//===----------------------------------------------------------------------===//
3529
3530/// Determine the declaration that should be put into the name lookup table to
3531/// represent the given declaration in this module. This is usually D itself,
3532/// but if D was imported and merged into a local declaration, we want the most
3533/// recent local declaration instead. The chosen declaration will be the most
3534/// recent declaration in any module that imports this one.
3535static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3536 NamedDecl *D) {
3537 if (!LangOpts.Modules || !D->isFromASTFile())
3538 return D;
3539
3540 if (Decl *Redecl = D->getPreviousDecl()) {
3541 // For Redeclarable decls, a prior declaration might be local.
3542 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3543 // If we find a local decl, we're done.
3544 if (!Redecl->isFromASTFile()) {
3545 // Exception: in very rare cases (for injected-class-names), not all
3546 // redeclarations are in the same semantic context. Skip ones in a
3547 // different context. They don't go in this lookup table at all.
3548 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3549 D->getDeclContext()->getRedeclContext()))
3550 continue;
3551 return cast<NamedDecl>(Redecl);
3552 }
3553
3554 // If we find a decl from a (chained-)PCH stop since we won't find a
3555 // local one.
3556 if (Redecl->getOwningModuleID() == 0)
3557 break;
3558 }
3559 } else if (Decl *First = D->getCanonicalDecl()) {
3560 // For Mergeable decls, the first decl might be local.
3561 if (!First->isFromASTFile())
3562 return cast<NamedDecl>(First);
3563 }
3564
3565 // All declarations are imported. Our most recent declaration will also be
3566 // the most recent one in anyone who imports us.
3567 return D;
3568}
3569
3570namespace {
3571
3572class ASTIdentifierTableTrait {
3573 ASTWriter &Writer;
3574 Preprocessor &PP;
3575 IdentifierResolver &IdResolver;
3576 bool IsModule;
3577 bool NeedDecls;
3578 ASTWriter::RecordData *InterestingIdentifierOffsets;
3579
3580 /// Determines whether this is an "interesting" identifier that needs a
3581 /// full IdentifierInfo structure written into the hash table. Notably, this
3582 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3583 /// to check that.
3584 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3585 if (MacroOffset ||
3586 II->isPoisoned() ||
3587 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3588 II->hasRevertedTokenIDToIdentifier() ||
3589 (NeedDecls && II->getFETokenInfo<void>()))
3590 return true;
3591
3592 return false;
3593 }
3594
3595public:
3596 using key_type = IdentifierInfo *;
3597 using key_type_ref = key_type;
3598
3599 using data_type = IdentID;
3600 using data_type_ref = data_type;
3601
3602 using hash_value_type = unsigned;
3603 using offset_type = unsigned;
3604
3605 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3606 IdentifierResolver &IdResolver, bool IsModule,
3607 ASTWriter::RecordData *InterestingIdentifierOffsets)
3608 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3609 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3610 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3611
3612 bool needDecls() const { return NeedDecls; }
3613
3614 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3615 return llvm::djbHash(II->getName());
3616 }
3617
3618 bool isInterestingIdentifier(const IdentifierInfo *II) {
3619 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3620 return isInterestingIdentifier(II, MacroOffset);
3621 }
3622
3623 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3624 return isInterestingIdentifier(II, 0);
3625 }
3626
3627 std::pair<unsigned, unsigned>
3628 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3629 unsigned KeyLen = II->getLength() + 1;
3630 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3631 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3632 if (isInterestingIdentifier(II, MacroOffset)) {
3633 DataLen += 2; // 2 bytes for builtin ID
3634 DataLen += 2; // 2 bytes for flags
3635 if (MacroOffset)
3636 DataLen += 4; // MacroDirectives offset.
3637
3638 if (NeedDecls) {
3639 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3640 DEnd = IdResolver.end();
3641 D != DEnd; ++D)
3642 DataLen += 4;
3643 }
3644 }
3645
3646 using namespace llvm::support;
3647
3648 endian::Writer LE(Out, little);
3649
3650 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3650, __extension__ __PRETTY_FUNCTION__))
;
3651 LE.write<uint16_t>(DataLen);
3652 // We emit the key length after the data length so that every
3653 // string is preceded by a 16-bit length. This matches the PTH
3654 // format for storing identifiers.
3655 LE.write<uint16_t>(KeyLen);
3656 return std::make_pair(KeyLen, DataLen);
3657 }
3658
3659 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3660 unsigned KeyLen) {
3661 // Record the location of the key data. This is used when generating
3662 // the mapping from persistent IDs to strings.
3663 Writer.SetIdentifierOffset(II, Out.tell());
3664
3665 // Emit the offset of the key/data length information to the interesting
3666 // identifiers table if necessary.
3667 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3668 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3669
3670 Out.write(II->getNameStart(), KeyLen);
3671 }
3672
3673 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3674 IdentID ID, unsigned) {
3675 using namespace llvm::support;
3676
3677 endian::Writer LE(Out, little);
3678
3679 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3680 if (!isInterestingIdentifier(II, MacroOffset)) {
3681 LE.write<uint32_t>(ID << 1);
3682 return;
3683 }
3684
3685 LE.write<uint32_t>((ID << 1) | 0x01);
3686 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3687 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3687, __extension__ __PRETTY_FUNCTION__))
;
3688 LE.write<uint16_t>(Bits);
3689 Bits = 0;
3690 bool HadMacroDefinition = MacroOffset != 0;
3691 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3692 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3693 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3694 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3695 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3696 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3697 LE.write<uint16_t>(Bits);
3698
3699 if (HadMacroDefinition)
3700 LE.write<uint32_t>(MacroOffset);
3701
3702 if (NeedDecls) {
3703 // Emit the declaration IDs in reverse order, because the
3704 // IdentifierResolver provides the declarations as they would be
3705 // visible (e.g., the function "stat" would come before the struct
3706 // "stat"), but the ASTReader adds declarations to the end of the list
3707 // (so we need to see the struct "stat" before the function "stat").
3708 // Only emit declarations that aren't from a chained PCH, though.
3709 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3710 IdResolver.end());
3711 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3712 DEnd = Decls.rend();
3713 D != DEnd; ++D)
3714 LE.write<uint32_t>(
3715 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3716 }
3717 }
3718};
3719
3720} // namespace
3721
3722/// Write the identifier table into the AST file.
3723///
3724/// The identifier table consists of a blob containing string data
3725/// (the actual identifiers themselves) and a separate "offsets" index
3726/// that maps identifier IDs to locations within the blob.
3727void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3728 IdentifierResolver &IdResolver,
3729 bool IsModule) {
3730 using namespace llvm;
3731
3732 RecordData InterestingIdents;
3733
3734 // Create and write out the blob that contains the identifier
3735 // strings.
3736 {
3737 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3738 ASTIdentifierTableTrait Trait(
3739 *this, PP, IdResolver, IsModule,
3740 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3741
3742 // Look for any identifiers that were named while processing the
3743 // headers, but are otherwise not needed. We add these to the hash
3744 // table to enable checking of the predefines buffer in the case
3745 // where the user adds new macro definitions when building the AST
3746 // file.
3747 SmallVector<const IdentifierInfo *, 128> IIs;
3748 for (const auto &ID : PP.getIdentifierTable())
3749 IIs.push_back(ID.second);
3750 // Sort the identifiers lexicographically before getting them references so
3751 // that their order is stable.
3752 llvm::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3753 for (const IdentifierInfo *II : IIs)
3754 if (Trait.isInterestingNonMacroIdentifier(II))
3755 getIdentifierRef(II);
3756
3757 // Create the on-disk hash table representation. We only store offsets
3758 // for identifiers that appear here for the first time.
3759 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3760 for (auto IdentIDPair : IdentifierIDs) {
3761 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3762 IdentID ID = IdentIDPair.second;
3763 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3763, __extension__ __PRETTY_FUNCTION__))
;
3764 // Write out identifiers if either the ID is local or the identifier has
3765 // changed since it was loaded.
3766 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3767 || II->hasChangedSinceDeserialization() ||
3768 (Trait.needDecls() &&
3769 II->hasFETokenInfoChangedSinceDeserialization()))
3770 Generator.insert(II, ID, Trait);
3771 }
3772
3773 // Create the on-disk hash table in a buffer.
3774 SmallString<4096> IdentifierTable;
3775 uint32_t BucketOffset;
3776 {
3777 using namespace llvm::support;
3778
3779 llvm::raw_svector_ostream Out(IdentifierTable);
3780 // Make sure that no bucket is at offset 0
3781 endian::write<uint32_t>(Out, 0, little);
3782 BucketOffset = Generator.Emit(Out, Trait);
3783 }
3784
3785 // Create a blob abbreviation
3786 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3787 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3788 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3789 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3790 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3791
3792 // Write the identifier table
3793 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3794 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3795 }
3796
3797 // Write the offsets table for identifier IDs.
3798 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3799 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3800 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3803 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3804
3805#ifndef NDEBUG
3806 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3807 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3807, __extension__ __PRETTY_FUNCTION__))
;
3808#endif
3809
3810 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3811 IdentifierOffsets.size(),
3812 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3813 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3814 bytes(IdentifierOffsets));
3815
3816 // In C++, write the list of interesting identifiers (those that are
3817 // defined as macros, poisoned, or similar unusual things).
3818 if (!InterestingIdents.empty())
3819 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3820}
3821
3822//===----------------------------------------------------------------------===//
3823// DeclContext's Name Lookup Table Serialization
3824//===----------------------------------------------------------------------===//
3825
3826namespace {
3827
3828// Trait used for the on-disk hash table used in the method pool.
3829class ASTDeclContextNameLookupTrait {
3830 ASTWriter &Writer;
3831 llvm::SmallVector<DeclID, 64> DeclIDs;
3832
3833public:
3834 using key_type = DeclarationNameKey;
3835 using key_type_ref = key_type;
3836
3837 /// A start and end index into DeclIDs, representing a sequence of decls.
3838 using data_type = std::pair<unsigned, unsigned>;
3839 using data_type_ref = const data_type &;
3840
3841 using hash_value_type = unsigned;
3842 using offset_type = unsigned;
3843
3844 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3845
3846 template<typename Coll>
3847 data_type getData(const Coll &Decls) {
3848 unsigned Start = DeclIDs.size();
3849 for (NamedDecl *D : Decls) {
3850 DeclIDs.push_back(
3851 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3852 }
3853 return std::make_pair(Start, DeclIDs.size());
3854 }
3855
3856 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3857 unsigned Start = DeclIDs.size();
3858 for (auto ID : FromReader)
3859 DeclIDs.push_back(ID);
3860 return std::make_pair(Start, DeclIDs.size());
3861 }
3862
3863 static bool EqualKey(key_type_ref a, key_type_ref b) {
3864 return a == b;
3865 }
3866
3867 hash_value_type ComputeHash(DeclarationNameKey Name) {
3868 return Name.getHash();
3869 }
3870
3871 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3872 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3873, __extension__ __PRETTY_FUNCTION__))
3873 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3873, __extension__ __PRETTY_FUNCTION__))
;
3874
3875 using namespace llvm::support;
3876
3877 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3878 }
3879
3880 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3881 DeclarationNameKey Name,
3882 data_type_ref Lookup) {
3883 using namespace llvm::support;
3884
3885 endian::Writer LE(Out, little);
3886 unsigned KeyLen = 1;
3887 switch (Name.getKind()) {
3888 case DeclarationName::Identifier:
3889 case DeclarationName::ObjCZeroArgSelector:
3890 case DeclarationName::ObjCOneArgSelector:
3891 case DeclarationName::ObjCMultiArgSelector:
3892 case DeclarationName::CXXLiteralOperatorName:
3893 case DeclarationName::CXXDeductionGuideName:
3894 KeyLen += 4;
3895 break;
3896 case DeclarationName::CXXOperatorName:
3897 KeyLen += 1;
3898 break;
3899 case DeclarationName::CXXConstructorName:
3900 case DeclarationName::CXXDestructorName:
3901 case DeclarationName::CXXConversionFunctionName:
3902 case DeclarationName::CXXUsingDirective:
3903 break;
3904 }
3905 LE.write<uint16_t>(KeyLen);
3906
3907 // 4 bytes for each DeclID.
3908 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3909 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3910, __extension__ __PRETTY_FUNCTION__))
3910 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3910, __extension__ __PRETTY_FUNCTION__))
;
3911 LE.write<uint16_t>(DataLen);
3912
3913 return std::make_pair(KeyLen, DataLen);
3914 }
3915
3916 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3917 using namespace llvm::support;
3918
3919 endian::Writer LE(Out, little);
3920 LE.write<uint8_t>(Name.getKind());
3921 switch (Name.getKind()) {
3922 case DeclarationName::Identifier:
3923 case DeclarationName::CXXLiteralOperatorName:
3924 case DeclarationName::CXXDeductionGuideName:
3925 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3926 return;
3927 case DeclarationName::ObjCZeroArgSelector:
3928 case DeclarationName::ObjCOneArgSelector:
3929 case DeclarationName::ObjCMultiArgSelector:
3930 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3931 return;
3932 case DeclarationName::CXXOperatorName:
3933 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3934, __extension__ __PRETTY_FUNCTION__))
3934 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3934, __extension__ __PRETTY_FUNCTION__))
;
3935 LE.write<uint8_t>(Name.getOperatorKind());
3936 return;
3937 case DeclarationName::CXXConstructorName:
3938 case DeclarationName::CXXDestructorName:
3939 case DeclarationName::CXXConversionFunctionName:
3940 case DeclarationName::CXXUsingDirective:
3941 return;
3942 }
3943
3944 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3944)
;
3945 }
3946
3947 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3948 unsigned DataLen) {
3949 using namespace llvm::support;
3950
3951 endian::Writer LE(Out, little);
3952 uint64_t Start = Out.tell(); (void)Start;
3953 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3954 LE.write<uint32_t>(DeclIDs[I]);
3955 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3955, __extension__ __PRETTY_FUNCTION__))
;
3956 }
3957};
3958
3959} // namespace
3960
3961bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3962 DeclContext *DC) {
3963 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3964}
3965
3966bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3967 DeclContext *DC) {
3968 for (auto *D : Result.getLookupResult())
3969 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3970 return false;
3971
3972 return true;
3973}
3974
3975void
3976ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3977 llvm::SmallVectorImpl<char> &LookupTable) {
3978 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3980, __extension__ __PRETTY_FUNCTION__))
3979 !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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3980, __extension__ __PRETTY_FUNCTION__))
3980 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3980, __extension__ __PRETTY_FUNCTION__))
;
3981
3982 // FIXME: We need to build the lookups table, which is logically const.
3983 auto *DC = const_cast<DeclContext*>(ConstDC);
3984 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3984, __extension__ __PRETTY_FUNCTION__))
;
3985
3986 // Create the on-disk hash table representation.
3987 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3988 ASTDeclContextNameLookupTrait> Generator;
3989 ASTDeclContextNameLookupTrait Trait(*this);
3990
3991 // The first step is to collect the declaration names which we need to
3992 // serialize into the name lookup table, and to collect them in a stable
3993 // order.
3994 SmallVector<DeclarationName, 16> Names;
3995
3996 // We also build up small sets of the constructor and conversion function
3997 // names which are visible.
3998 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3999
4000 for (auto &Lookup : *DC->buildLookup()) {
4001 auto &Name = Lookup.first;
4002 auto &Result = Lookup.second;
4003
4004 // If there are no local declarations in our lookup result, we
4005 // don't need to write an entry for the name at all. If we can't
4006 // write out a lookup set without performing more deserialization,
4007 // just skip this entry.
4008 if (isLookupResultExternal(Result, DC) &&
4009 isLookupResultEntirelyExternal(Result, DC))
4010 continue;
4011
4012 // We also skip empty results. If any of the results could be external and
4013 // the currently available results are empty, then all of the results are
4014 // external and we skip it above. So the only way we get here with an empty
4015 // results is when no results could have been external *and* we have
4016 // external results.
4017 //
4018 // FIXME: While we might want to start emitting on-disk entries for negative
4019 // lookups into a decl context as an optimization, today we *have* to skip
4020 // them because there are names with empty lookup results in decl contexts
4021 // which we can't emit in any stable ordering: we lookup constructors and
4022 // conversion functions in the enclosing namespace scope creating empty
4023 // results for them. This in almost certainly a bug in Clang's name lookup,
4024 // but that is likely to be hard or impossible to fix and so we tolerate it
4025 // here by omitting lookups with empty results.
4026 if (Lookup.second.getLookupResult().empty())
4027 continue;
4028
4029 switch (Lookup.first.getNameKind()) {
4030 default:
4031 Names.push_back(Lookup.first);
4032 break;
4033
4034 case DeclarationName::CXXConstructorName:
4035 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4036, __extension__ __PRETTY_FUNCTION__))
4036 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4036, __extension__ __PRETTY_FUNCTION__))
;
4037 ConstructorNameSet.insert(Name);
4038 break;
4039
4040 case DeclarationName::CXXConversionFunctionName:
4041 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4042, __extension__ __PRETTY_FUNCTION__))
4042 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4042, __extension__ __PRETTY_FUNCTION__))
;
4043 ConversionNameSet.insert(Name);
4044 break;
4045 }
4046 }
4047
4048 // Sort the names into a stable order.
4049 llvm::sort(Names.begin(), Names.end());
4050
4051 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4052 // We need to establish an ordering of constructor and conversion function
4053 // names, and they don't have an intrinsic ordering.
4054
4055 // First we try the easy case by forming the current context's constructor
4056 // name and adding that name first. This is a very useful optimization to
4057 // avoid walking the lexical declarations in many cases, and it also
4058 // handles the only case where a constructor name can come from some other
4059 // lexical context -- when that name is an implicit constructor merged from
4060 // another declaration in the redecl chain. Any non-implicit constructor or
4061 // conversion function which doesn't occur in all the lexical contexts
4062 // would be an ODR violation.
4063 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4064 Context->getCanonicalType(Context->getRecordType(D)));
4065 if (ConstructorNameSet.erase(ImplicitCtorName))
4066 Names.push_back(ImplicitCtorName);
4067
4068 // If we still have constructors or conversion functions, we walk all the
4069 // names in the decl and add the constructors and conversion functions
4070 // which are visible in the order they lexically occur within the context.
4071 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4072 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4073 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4074 auto Name = ChildND->getDeclName();
4075 switch (Name.getNameKind()) {
4076 default:
4077 continue;
4078
4079 case DeclarationName::CXXConstructorName:
4080 if (ConstructorNameSet.erase(Name))
4081 Names.push_back(Name);
4082 break;
4083
4084 case DeclarationName::CXXConversionFunctionName:
4085 if (ConversionNameSet.erase(Name))
4086 Names.push_back(Name);
4087 break;
4088 }
4089
4090 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4091 break;
4092 }
4093
4094 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4096, __extension__ __PRETTY_FUNCTION__))
4095 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4096, __extension__ __PRETTY_FUNCTION__))
4096 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4096, __extension__ __PRETTY_FUNCTION__))
;
4097 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4099, __extension__ __PRETTY_FUNCTION__))
4098 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4099, __extension__ __PRETTY_FUNCTION__))
4099 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4099, __extension__ __PRETTY_FUNCTION__))
;
4100 }
4101
4102 // Next we need to do a lookup with each name into this decl context to fully
4103 // populate any results from external sources. We don't actually use the
4104 // results of these lookups because we only want to use the results after all
4105 // results have been loaded and the pointers into them will be stable.
4106 for (auto &Name : Names)
4107 DC->lookup(Name);
4108
4109 // Now we need to insert the results for each name into the hash table. For
4110 // constructor names and conversion function names, we actually need to merge
4111 // all of the results for them into one list of results each and insert
4112 // those.
4113 SmallVector<NamedDecl *, 8> ConstructorDecls;
4114 SmallVector<NamedDecl *, 8> ConversionDecls;
4115
4116 // Now loop over the names, either inserting them or appending for the two
4117 // special cases.
4118 for (auto &Name : Names) {
4119 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4120
4121 switch (Name.getNameKind()) {
4122 default:
4123 Generator.insert(Name, Trait.getData(Result), Trait);
4124 break;
4125
4126 case DeclarationName::CXXConstructorName:
4127 ConstructorDecls.append(Result.begin(), Result.end());
4128 break;
4129
4130 case DeclarationName::CXXConversionFunctionName:
4131 ConversionDecls.append(Result.begin(), Result.end());
4132 break;
4133 }
4134 }
4135
4136 // Handle our two special cases if we ended up having any. We arbitrarily use
4137 // the first declaration's name here because the name itself isn't part of
4138 // the key, only the kind of name is used.
4139 if (!ConstructorDecls.empty())
4140 Generator.insert(ConstructorDecls.front()->getDeclName(),
4141 Trait.getData(ConstructorDecls), Trait);
4142 if (!ConversionDecls.empty())
4143 Generator.insert(ConversionDecls.front()->getDeclName(),
4144 Trait.getData(ConversionDecls), Trait);
4145
4146 // Create the on-disk hash table. Also emit the existing imported and
4147 // merged table if there is one.
4148 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4149 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4150}
4151
4152/// Write the block containing all of the declaration IDs
4153/// visible from the given DeclContext.
4154///
4155/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4156/// bitstream, or 0 if no block was written.
4157uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4158 DeclContext *DC) {
4159 // If we imported a key declaration of this namespace, write the visible
4160 // lookup results as an update record for it rather than including them
4161 // on this declaration. We will only look at key declarations on reload.
4162 if (isa<NamespaceDecl>(DC) && Chain &&
4163 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4164 // Only do this once, for the first local declaration of the namespace.
4165 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4166 Prev = Prev->getPreviousDecl())
4167 if (!Prev->isFromASTFile())
4168 return 0;
4169
4170 // Note that we need to emit an update record for the primary context.
4171 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4172
4173 // Make sure all visible decls are written. They will be recorded later. We
4174 // do this using a side data structure so we can sort the names into
4175 // a deterministic order.
4176 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4177 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4178 LookupResults;
4179 if (Map) {
4180 LookupResults.reserve(Map->size());
4181 for (auto &Entry : *Map)
4182 LookupResults.push_back(
4183 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4184 }
4185
4186 llvm::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
4187 for (auto &NameAndResult : LookupResults) {
4188 DeclarationName Name = NameAndResult.first;
4189 DeclContext::lookup_result Result = NameAndResult.second;
4190 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4191 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4192 // We have to work around a name lookup bug here where negative lookup
4193 // results for these names get cached in namespace lookup tables (these
4194 // names should never be looked up in a namespace).
4195 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4196, __extension__ __PRETTY_FUNCTION__))
4196 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4196, __extension__ __PRETTY_FUNCTION__))
;
4197 continue;
4198 }
4199
4200 for (NamedDecl *ND : Result)
4201 if (!ND->isFromASTFile())
4202 GetDeclRef(ND);
4203 }
4204
4205 return 0;
4206 }
4207
4208 if (DC->getPrimaryContext() != DC)
4209 return 0;
4210
4211 // Skip contexts which don't support name lookup.
4212 if (!DC->isLookupContext())
4213 return 0;
4214
4215 // If not in C++, we perform name lookup for the translation unit via the
4216 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4217 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4218 return 0;
4219
4220 // Serialize the contents of the mapping used for lookup. Note that,
4221 // although we have two very different code paths, the serialized
4222 // representation is the same for both cases: a declaration name,
4223 // followed by a size, followed by references to the visible
4224 // declarations that have that name.
4225 uint64_t Offset = Stream.GetCurrentBitNo();
4226 StoredDeclsMap *Map = DC->buildLookup();
4227 if (!Map || Map->empty())
4228 return 0;
4229
4230 // Create the on-disk hash table in a buffer.
4231 SmallString<4096> LookupTable;
4232 GenerateNameLookupTable(DC, LookupTable);
4233
4234 // Write the lookup table
4235 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4236 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4237 LookupTable);
4238 ++NumVisibleDeclContexts;
4239 return Offset;
4240}
4241
4242/// Write an UPDATE_VISIBLE block for the given context.
4243///
4244/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4245/// DeclContext in a dependent AST file. As such, they only exist for the TU
4246/// (in C++), for namespaces, and for classes with forward-declared unscoped
4247/// enumeration members (in C++11).
4248void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4249 StoredDeclsMap *Map = DC->getLookupPtr();
4250 if (!Map || Map->empty())
4251 return;
4252
4253 // Create the on-disk hash table in a buffer.
4254 SmallString<4096> LookupTable;
4255 GenerateNameLookupTable(DC, LookupTable);
4256
4257 // If we're updating a namespace, select a key declaration as the key for the
4258 // update record; those are the only ones that will be checked on reload.
4259 if (isa<NamespaceDecl>(DC))
4260 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4261
4262 // Write the lookup table
4263 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4264 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4265}
4266
4267/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4268void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4269 RecordData::value_type Record[] = {Opts.getInt()};
4270 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4271}
4272
4273/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4274void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4275 if (!SemaRef.Context.getLangOpts().OpenCL)
4276 return;
4277
4278 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4279 RecordData Record;
4280 for (const auto &I:Opts.OptMap) {
4281 AddString(I.getKey(), Record);
4282 auto V = I.getValue();
4283 Record.push_back(V.Supported ? 1 : 0);
4284 Record.push_back(V.Enabled ? 1 : 0);
4285 Record.push_back(V.Avail);
4286 Record.push_back(V.Core);
4287 }
4288 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4289}
4290
4291void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4292 if (!SemaRef.Context.getLangOpts().OpenCL)
4293 return;
4294
4295 RecordData Record;
4296 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4297 Record.push_back(
4298 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4299 Record.push_back(I.second.size());
4300 for (auto Ext : I.second)
4301 AddString(Ext, Record);
4302 }
4303 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4304}
4305
4306void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4307 if (!SemaRef.Context.getLangOpts().OpenCL)
4308 return;
4309
4310 RecordData Record;
4311 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4312 Record.push_back(getDeclID(I.first));
4313 Record.push_back(static_cast<unsigned>(I.second.size()));
4314 for (auto Ext : I.second)
4315 AddString(Ext, Record);
4316 }
4317 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4318}
4319
4320void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4321 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4322 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4323 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4324 }
4325}
4326
4327void ASTWriter::WriteObjCCategories() {
4328 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4329 RecordData Categories;
4330
4331 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4332 unsigned Size = 0;
4333 unsigned StartIndex = Categories.size();
4334
4335 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4336
4337 // Allocate space for the size.
4338 Categories.push_back(0);
4339
4340 // Add the categories.
4341 for (ObjCInterfaceDecl::known_categories_iterator
4342 Cat = Class->known_categories_begin(),
4343 CatEnd = Class->known_categories_end();
4344 Cat != CatEnd; ++Cat, ++Size) {
4345 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4345, __extension__ __PRETTY_FUNCTION__))
;
4346 AddDeclRef(*Cat, Categories);
4347 }
4348
4349 // Update the size.
4350 Categories[StartIndex] = Size;
4351
4352 // Record this interface -> category map.
4353 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4354 CategoriesMap.push_back(CatInfo);
4355 }
4356
4357 // Sort the categories map by the definition ID, since the reader will be
4358 // performing binary searches on this information.
4359 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4360
4361 // Emit the categories map.
4362 using namespace llvm;
4363
4364 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4365 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4366 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4367 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4368 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4369
4370 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4371 Stream.EmitRecordWithBlob(AbbrevID, Record,
4372 reinterpret_cast<char *>(CategoriesMap.data()),
4373 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4374
4375 // Emit the category lists.
4376 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4377}
4378
4379void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4380 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4381
4382 if (LPTMap.empty())
4383 return;
4384
4385 RecordData Record;
4386 for (auto &LPTMapEntry : LPTMap) {
4387 const FunctionDecl *FD = LPTMapEntry.first;
4388 LateParsedTemplate &LPT = *LPTMapEntry.second;
4389 AddDeclRef(FD, Record);
4390 AddDeclRef(LPT.D, Record);
4391 Record.push_back(LPT.Toks.size());
4392
4393 for (const auto &Tok : LPT.Toks) {
4394 AddToken(Tok, Record);
4395 }
4396 }
4397 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4398}
4399
4400/// Write the state of 'pragma clang optimize' at the end of the module.
4401void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4402 RecordData Record;
4403 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4404 AddSourceLocation(PragmaLoc, Record);
4405 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4406}
4407
4408/// Write the state of 'pragma ms_struct' at the end of the module.
4409void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4410 RecordData Record;
4411 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4412 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4413}
4414
4415/// Write the state of 'pragma pointers_to_members' at the end of the
4416//module.
4417void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4418 RecordData Record;
4419 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4420 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4421 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4422}
4423
4424/// Write the state of 'pragma pack' at the end of the module.
4425void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4426 // Don't serialize pragma pack state for modules, since it should only take
4427 // effect on a per-submodule basis.
4428 if (WritingModule)
4429 return;
4430
4431 RecordData Record;
4432 Record.push_back(SemaRef.PackStack.CurrentValue);
4433 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4434 Record.push_back(SemaRef.PackStack.Stack.size());
4435 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4436 Record.push_back(StackEntry.Value);
4437 AddSourceLocation(StackEntry.PragmaLocation, Record);
4438 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4439 AddString(StackEntry.StackSlotLabel, Record);
4440 }
4441 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4442}
4443
4444void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4445 ModuleFileExtensionWriter &Writer) {
4446 // Enter the extension block.
4447 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4448
4449 // Emit the metadata record abbreviation.
4450 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4451 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4452 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4453 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4454 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4455 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4456 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4457 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4458
4459 // Emit the metadata record.
4460 RecordData Record;
4461 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4462 Record.push_back(EXTENSION_METADATA);
4463 Record.push_back(Metadata.MajorVersion);
4464 Record.push_back(Metadata.MinorVersion);
4465 Record.push_back(Metadata.BlockName.size());
4466 Record.push_back(Metadata.UserInfo.size());
4467 SmallString<64> Buffer;
4468 Buffer += Metadata.BlockName;
4469 Buffer += Metadata.UserInfo;
4470 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4471
4472 // Emit the contents of the extension block.
4473 Writer.writeExtensionContents(SemaRef, Stream);
4474
4475 // Exit the extension block.
4476 Stream.ExitBlock();
4477}
4478
4479//===----------------------------------------------------------------------===//
4480// General Serialization Routines
4481//===----------------------------------------------------------------------===//
4482
4483/// Emit the list of attributes to the specified record.
4484void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4485 auto &Record = *this;
4486 Record.push_back(Attrs.size());
4487 for (const auto *A : Attrs) {
4488 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4489 Record.AddSourceRange(A->getRange());
4490
4491#include "clang/Serialization/AttrPCHWrite.inc"
4492 }
4493}
4494
4495void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4496 AddSourceLocation(Tok.getLocation(), Record);
4497 Record.push_back(Tok.getLength());
4498
4499 // FIXME: When reading literal tokens, reconstruct the literal pointer
4500 // if it is needed.
4501 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4502 // FIXME: Should translate token kind to a stable encoding.
4503 Record.push_back(Tok.getKind());
4504 // FIXME: Should translate token flags to a stable encoding.
4505 Record.push_back(Tok.getFlags());
4506}
4507
4508void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4509 Record.push_back(Str.size());
4510 Record.insert(Record.end(), Str.begin(), Str.end());
4511}
4512
4513bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4514 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4514, __extension__ __PRETTY_FUNCTION__))
;
4515
4516 bool Changed =
4517 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4518
4519 // Remove a prefix to make the path relative, if relevant.
4520 const char *PathBegin = Path.data();
4521 const char *PathPtr =
4522 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4523 if (PathPtr != PathBegin) {
4524 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4525 Changed = true;
4526 }
4527
4528 return Changed;
4529}
4530
4531void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4532 SmallString<128> FilePath(Path);
4533 PreparePathForOutput(FilePath);
4534 AddString(FilePath, Record);
4535}
4536
4537void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4538 StringRef Path) {
4539 SmallString<128> FilePath(Path);
4540 PreparePathForOutput(FilePath);
4541 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4542}
4543
4544void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4545 RecordDataImpl &Record) {
4546 Record.push_back(Version.getMajor());
4547 if (Optional<unsigned> Minor = Version.getMinor())
4548 Record.push_back(*Minor + 1);
4549 else
4550 Record.push_back(0);
4551 if (Optional<unsigned> Subminor = Version.getSubminor())
4552 Record.push_back(*Subminor + 1);
4553 else
4554 Record.push_back(0);
4555}
4556
4557/// Note that the identifier II occurs at the given offset
4558/// within the identifier table.
4559void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4560 IdentID ID = IdentifierIDs[II];
4561 // Only store offsets new to this AST file. Other identifier names are looked
4562 // up earlier in the chain and thus don't need an offset.
4563 if (ID >= FirstIdentID)
4564 IdentifierOffsets[ID - FirstIdentID] = Offset;
4565}
4566
4567/// Note that the selector Sel occurs at the given offset
4568/// within the method pool/selector table.
4569void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4570 unsigned ID = SelectorIDs[Sel];
4571 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4571, __extension__ __PRETTY_FUNCTION__))
;
4572 // Don't record offsets for selectors that are also available in a different
4573 // file.
4574 if (ID < FirstSelectorID)
4575 return;
4576 SelectorOffsets[ID - FirstSelectorID] = Offset;
4577}
4578
4579ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4580 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4581 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4582 bool IncludeTimestamps)
4583 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4584 IncludeTimestamps(IncludeTimestamps) {
4585 for (const auto &Ext : Extensions) {
4586 if (auto Writer = Ext->createExtensionWriter(*this))
4587 ModuleFileExtensionWriters.push_back(std::move(Writer));
4588 }
4589}
4590
4591ASTWriter::~ASTWriter() {
4592 llvm::DeleteContainerSeconds(FileDeclIDs);
4593}
4594
4595const LangOptions &ASTWriter::getLangOpts() const {
4596 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4596, __extension__ __PRETTY_FUNCTION__))
;
4597 return Context->getLangOpts();
4598}
4599
4600time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4601 return IncludeTimestamps ? E->getModificationTime() : 0;
4602}
4603
4604ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4605 const std::string &OutputFile,
4606 Module *WritingModule, StringRef isysroot,
4607 bool hasErrors) {
4608 WritingAST = true;
4609
4610 ASTHasCompilerErrors = hasErrors;
4611
4612 // Emit the file header.
4613 Stream.Emit((unsigned)'C', 8);
4614 Stream.Emit((unsigned)'P', 8);
4615 Stream.Emit((unsigned)'C', 8);
4616 Stream.Emit((unsigned)'H', 8);
4617
4618 WriteBlockInfoBlock();
4619
4620 Context = &SemaRef.Context;
4621 PP = &SemaRef.PP;
4622 this->WritingModule = WritingModule;
4623 ASTFileSignature Signature =
4624 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4625 Context = nullptr;
4626 PP = nullptr;
4627 this->WritingModule = nullptr;
4628 this->BaseDirectory.clear();
4629
4630 WritingAST = false;
4631 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4632 // Construct MemoryBuffer and update buffer manager.
4633 PCMCache.addBuffer(OutputFile,
4634 llvm::MemoryBuffer::getMemBufferCopy(
4635 StringRef(Buffer.begin(), Buffer.size())));
4636 }
4637 return Signature;
4638}
4639
4640template<typename Vector>
4641static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4642 ASTWriter::RecordData &Record) {
4643 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4644 I != E; ++I) {
4645 Writer.AddDeclRef(*I, Record);
4646 }
4647}
4648
4649ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4650 const std::string &OutputFile,
4651 Module *WritingModule) {
4652 using namespace llvm;
4653
4654 bool isModule = WritingModule != nullptr;
4655
4656 // Make sure that the AST reader knows to finalize itself.
4657 if (Chain)
4658 Chain->finalizeForWriting();
4659
4660 ASTContext &Context = SemaRef.Context;
4661 Preprocessor &PP = SemaRef.PP;
4662
4663 // Set up predefined declaration IDs.
4664 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4665 if (D) {
4666 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4666, __extension__ __PRETTY_FUNCTION__))
;
4667 DeclIDs[D] = ID;
4668 }
4669 };
4670 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4671 PREDEF_DECL_TRANSLATION_UNIT_ID);
4672 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4673 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4674 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4675 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4676 PREDEF_DECL_OBJC_PROTOCOL_ID);
4677 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4678 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4679 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4680 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4681 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4682 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4683 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4684 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4685 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4686 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4687 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4688 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4689 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4690 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4691 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4692 RegisterPredefDecl(Context.TypePackElementDecl,
4693 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4694
4695 // Build a record containing all of the tentative definitions in this file, in
4696 // TentativeDefinitions order. Generally, this record will be empty for
4697 // headers.
4698 RecordData TentativeDefinitions;
4699 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4700
4701 // Build a record containing all of the file scoped decls in this file.
4702 RecordData UnusedFileScopedDecls;
4703 if (!isModule)
4704 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4705 UnusedFileScopedDecls);
4706
4707 // Build a record containing all of the delegating constructors we still need
4708 // to resolve.
4709 RecordData DelegatingCtorDecls;
4710 if (!isModule)
4711 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4712
4713 // Write the set of weak, undeclared identifiers. We always write the
4714 // entire table, since later PCH files in a PCH chain are only interested in
4715 // the results at the end of the chain.
4716 RecordData WeakUndeclaredIdentifiers;
4717 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4718 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4719 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4720 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4721 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4722 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4723 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4724 }
4725
4726 // Build a record containing all of the ext_vector declarations.
4727 RecordData ExtVectorDecls;
4728 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4729
4730 // Build a record containing all of the VTable uses information.
4731 RecordData VTableUses;
4732 if (!SemaRef.VTableUses.empty()) {
4733 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4734 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4735 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4736 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4737 }
4738 }
4739
4740 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4741 RecordData UnusedLocalTypedefNameCandidates;
4742 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4743 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4744
4745 // Build a record containing all of pending implicit instantiations.
4746 RecordData PendingInstantiations;
4747 for (const auto &I : SemaRef.PendingInstantiations) {
4748 AddDeclRef(I.first, PendingInstantiations);
4749 AddSourceLocation(I.second, PendingInstantiations);
4750 }
4751 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4752, __extension__ __PRETTY_FUNCTION__))
4752 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4752, __extension__ __PRETTY_FUNCTION__))
;
4753
4754 // Build a record containing some declaration references.
4755 RecordData SemaDeclRefs;
4756 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4757 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4758 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4759 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4760 }
4761
4762 RecordData CUDASpecialDeclRefs;
4763 if (Context.getcudaConfigureCallDecl()) {
4764 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4765 }
4766
4767 // Build a record containing all of the known namespaces.
4768 RecordData KnownNamespaces;
4769 for (const auto &I : SemaRef.KnownNamespaces) {
4770 if (!I.second)
4771 AddDeclRef(I.first, KnownNamespaces);
4772 }
4773
4774 // Build a record of all used, undefined objects that require definitions.
4775 RecordData UndefinedButUsed;
4776
4777 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4778 SemaRef.getUndefinedButUsed(Undefined);
4779 for (const auto &I : Undefined) {
4780 AddDeclRef(I.first, UndefinedButUsed);
4781 AddSourceLocation(I.second, UndefinedButUsed);
4782 }
4783
4784 // Build a record containing all delete-expressions that we would like to
4785 // analyze later in AST.
4786 RecordData DeleteExprsToAnalyze;
4787
4788 if (!isModule) {
4789 for (const auto &DeleteExprsInfo :
4790 SemaRef.getMismatchingDeleteExpressions()) {
4791 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4792 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4793 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4794 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4795 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4796 }
4797 }
4798 }
4799
4800 // Write the control block
4801 WriteControlBlock(PP, Context, isysroot, OutputFile);
4802
4803 // Write the remaining AST contents.
4804 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4805
4806 // This is so that older clang versions, before the introduction
4807 // of the control block, can read and reject the newer PCH format.
4808 {
4809 RecordData Record = {VERSION_MAJOR};
4810 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4811 }
4812
4813 // Create a lexical update block containing all of the declarations in the
4814 // translation unit that do not come from other AST files.
4815 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4816 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4817 for (const auto *D : TU->noload_decls()) {
4818 if (!D->isFromASTFile()) {
4819 NewGlobalKindDeclPairs.push_back(D->getKind());
4820 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4821 }
4822 }
4823
4824 auto Abv = std::make_shared<BitCodeAbbrev>();
4825 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4826 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4827 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4828 {
4829 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4830 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4831 bytes(NewGlobalKindDeclPairs));
4832 }
4833
4834 // And a visible updates block for the translation unit.
4835 Abv = std::make_shared<BitCodeAbbrev>();
4836 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4837 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4838 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4839 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4840 WriteDeclContextVisibleUpdate(TU);
4841
4842 // If we have any extern "C" names, write out a visible update for them.
4843 if (Context.ExternCContext)
4844 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4845
4846 // If the translation unit has an anonymous namespace, and we don't already
4847 // have an update block for it, write it as an update block.
4848 // FIXME: Why do we not do this if there's already an update block?
4849 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4850 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4851 if (Record.empty())
4852 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4853 }
4854
4855 // Add update records for all mangling numbers and static local numbers.
4856 // These aren't really update records, but this is a convenient way of
4857 // tagging this rare extra data onto the declarations.
4858 for (const auto &Number : Context.MangleNumbers)
4859 if (!Number.first->isFromASTFile())
4860 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4861 Number.second));
4862 for (const auto &Number : Context.StaticLocalNumbers)
4863 if (!Number.first->isFromASTFile())
4864 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4865 Number.second));
4866
4867 // Make sure visible decls, added to DeclContexts previously loaded from
4868 // an AST file, are registered for serialization. Likewise for template
4869 // specializations added to imported templates.
4870 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4871 GetDeclRef(I);
4872 }
4873
4874 // Make sure all decls associated with an identifier are registered for
4875 // serialization, if we're storing decls with identifiers.
4876 if (!WritingModule || !getLangOpts().CPlusPlus) {
4877 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4878 for (const auto &ID : PP.getIdentifierTable()) {
4879 const IdentifierInfo *II = ID.second;
4880 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4881 IIs.push_back(II);
4882 }
4883 // Sort the identifiers to visit based on their name.
4884 llvm::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4885 for (const IdentifierInfo *II : IIs) {
4886 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4887 DEnd = SemaRef.IdResolver.end();
4888 D != DEnd; ++D) {
4889 GetDeclRef(*D);
4890 }
4891 }
4892 }
4893
4894 // For method pool in the module, if it contains an entry for a selector,
4895 // the entry should be complete, containing everything introduced by that
4896 // module and all modules it imports. It's possible that the entry is out of
4897 // date, so we need to pull in the new content here.
4898
4899 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4900 // safe, we copy all selectors out.
4901 llvm::SmallVector<Selector, 256> AllSelectors;
4902 for (auto &SelectorAndID : SelectorIDs)
4903 AllSelectors.push_back(SelectorAndID.first);
4904 for (auto &Selector : AllSelectors)
4905 SemaRef.updateOutOfDateSelector(Selector);
4906
4907 // Form the record of special types.
4908 RecordData SpecialTypes;
4909 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4910 AddTypeRef(Context.getFILEType(), SpecialTypes);
4911 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4912 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4913 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4914 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4915 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4916 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4917
4918 if (Chain) {
4919 // Write the mapping information describing our module dependencies and how
4920 // each of those modules were mapped into our own offset/ID space, so that
4921 // the reader can build the appropriate mapping to its own offset/ID space.
4922 // The map consists solely of a blob with the following format:
4923 // *(module-kind:i8
4924 // module-name-len:i16 module-name:len*i8
4925 // source-location-offset:i32
4926 // identifier-id:i32
4927 // preprocessed-entity-id:i32
4928 // macro-definition-id:i32
4929 // submodule-id:i32
4930 // selector-id:i32
4931 // declaration-id:i32
4932 // c++-base-specifiers-id:i32
4933 // type-id:i32)
4934 //
4935 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4936 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4937 // it is the module file name.
4938 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4939 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4940 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4941 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4942 SmallString<2048> Buffer;
4943 {
4944 llvm::raw_svector_ostream Out(Buffer);
4945 for (ModuleFile &M : Chain->ModuleMgr) {
4946 using namespace llvm::support;
4947
4948 endian::Writer LE(Out, little);
4949 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4950 StringRef Name =
4951 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4952 ? M.ModuleName
4953 : M.FileName;
4954 LE.write<uint16_t>(Name.size());
4955 Out.write(Name.data(), Name.size());
4956
4957 // Note: if a base ID was uint max, it would not be possible to load
4958 // another module after it or have more than one entity inside it.
4959 uint32_t None = std::numeric_limits<uint32_t>::max();
4960
4961 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4962 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4962, __extension__ __PRETTY_FUNCTION__))
;
4963 if (ShouldWrite)
4964 LE.write<uint32_t>(BaseID);
4965 else
4966 LE.write<uint32_t>(None);
4967 };
4968
4969 // These values should be unique within a chain, since they will be read
4970 // as keys into ContinuousRangeMaps.
4971 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4972 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4973 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4974 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4975 M.NumPreprocessedEntities);
4976 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4977 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4978 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4979 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4980 }
4981 }
4982 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4983 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4984 Buffer.data(), Buffer.size());
4985 }
4986
4987 RecordData DeclUpdatesOffsetsRecord;
4988
4989 // Keep writing types, declarations, and declaration update records
4990 // until we've emitted all of them.
4991 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4992 WriteTypeAbbrevs();
4993 WriteDeclAbbrevs();
4994 do {
4995 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4996 while (!DeclTypesToEmit.empty()) {
4997 DeclOrType DOT = DeclTypesToEmit.front();
4998 DeclTypesToEmit.pop();
4999 if (DOT.isType())
5000 WriteType(DOT.getType());
5001 else
5002 WriteDecl(Context, DOT.getDecl());
5003 }
5004 } while (!DeclUpdates.empty());
5005 Stream.ExitBlock();
5006
5007 DoneWritingDeclsAndTypes = true;
5008
5009 // These things can only be done once we've written out decls and types.
5010 WriteTypeDeclOffsets();
5011 if (!DeclUpdatesOffsetsRecord.empty())
5012 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
5013 WriteFileDeclIDsMap();
5014 WriteSourceManagerBlock(Context.getSourceManager(), PP);
5015 WriteComments();
5016 WritePreprocessor(PP, isModule);
5017 WriteHeaderSearch(PP.getHeaderSearchInfo());
5018 WriteSelectors(SemaRef);
5019 WriteReferencedSelectorsPool(SemaRef);
5020 WriteLateParsedTemplates(SemaRef);
5021 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
5022 WriteFPPragmaOptions(SemaRef.getFPOptions());
5023 WriteOpenCLExtensions(SemaRef);
5024 WriteOpenCLExtensionTypes(SemaRef);
5025 WriteOpenCLExtensionDecls(SemaRef);
5026 WriteCUDAPragmas(SemaRef);
5027
5028 // If we're emitting a module, write out the submodule information.
5029 if (WritingModule)
5030 WriteSubmodules(WritingModule);
5031
5032 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5033
5034 // Write the record containing external, unnamed definitions.
5035 if (!EagerlyDeserializedDecls.empty())
5036 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5037
5038 if (!ModularCodegenDecls.empty())
5039 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5040
5041 // Write the record containing tentative definitions.
5042 if (!TentativeDefinitions.empty())
5043 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5044
5045 // Write the record containing unused file scoped decls.
5046 if (!UnusedFileScopedDecls.empty())
5047 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5048
5049 // Write the record containing weak undeclared identifiers.
5050 if (!WeakUndeclaredIdentifiers.empty())
5051 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5052 WeakUndeclaredIdentifiers);
5053
5054 // Write the record containing ext_vector type names.
5055 if (!ExtVectorDecls.empty())
5056 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5057
5058 // Write the record containing VTable uses information.
5059 if (!VTableUses.empty())
5060 Stream.EmitRecord(VTABLE_USES, VTableUses);
5061
5062 // Write the record containing potentially unused local typedefs.
5063 if (!UnusedLocalTypedefNameCandidates.empty())
5064 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5065 UnusedLocalTypedefNameCandidates);
5066
5067 // Write the record containing pending implicit instantiations.
5068 if (!PendingInstantiations.empty())
5069 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5070
5071 // Write the record containing declaration references of Sema.
5072 if (!SemaDeclRefs.empty())
5073 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5074
5075 // Write the record containing CUDA-specific declaration references.
5076 if (!CUDASpecialDeclRefs.empty())
5077 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5078
5079 // Write the delegating constructors.
5080 if (!DelegatingCtorDecls.empty())
5081 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5082
5083 // Write the known namespaces.
5084 if (!KnownNamespaces.empty())
5085 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5086
5087 // Write the undefined internal functions and variables, and inline functions.
5088 if (!UndefinedButUsed.empty())
5089 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5090
5091 if (!DeleteExprsToAnalyze.empty())
5092 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5093
5094 // Write the visible updates to DeclContexts.
5095 for (auto *DC : UpdatedDeclContexts)
5096 WriteDeclContextVisibleUpdate(DC);
5097
5098 if (!WritingModule) {
5099 // Write the submodules that were imported, if any.
5100 struct ModuleInfo {
5101 uint64_t ID;
5102 Module *M;
5103 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5104 };
5105 llvm::SmallVector<ModuleInfo, 64> Imports;
5106 for (const auto *I : Context.local_imports()) {
5107 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5107, __extension__ __PRETTY_FUNCTION__))
;
5108 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5109 I->getImportedModule()));
5110 }
5111
5112 if (!Imports.empty()) {
5113 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5114 return A.ID < B.ID;
5115 };
5116 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5117 return A.ID == B.ID;
5118 };
5119
5120 // Sort and deduplicate module IDs.
5121 llvm::sort(Imports.begin(), Imports.end(), Cmp);
5122 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5123 Imports.end());
5124
5125 RecordData ImportedModules;
5126 for (const auto &Import : Imports) {
5127 ImportedModules.push_back(Import.ID);
5128 // FIXME: If the module has macros imported then later has declarations
5129 // imported, this location won't be the right one as a location for the
5130 // declaration imports.
5131 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5132 }
5133
5134 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5135 }
5136 }
5137
5138 WriteObjCCategories();
5139 if(!WritingModule) {
5140 WriteOptimizePragmaOptions(SemaRef);
5141 WriteMSStructPragmaOptions(SemaRef);
5142 WriteMSPointersToMembersPragmaOptions(SemaRef);
5143 }
5144 WritePackPragmaOptions(SemaRef);
5145
5146 // Some simple statistics
5147 RecordData::value_type Record[] = {
5148 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5149 Stream.EmitRecord(STATISTICS, Record);
5150 Stream.ExitBlock();
5151
5152 // Write the module file extension blocks.
5153 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5154 WriteModuleFileExtension(SemaRef, *ExtWriter);
5155
5156 return writeUnhashedControlBlock(PP, Context);
5157}
5158
5159void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5160 if (DeclUpdates.empty())
5161 return;
5162
5163 DeclUpdateMap LocalUpdates;
5164 LocalUpdates.swap(DeclUpdates);
5165
5166 for (auto &DeclUpdate : LocalUpdates) {
5167 const Decl *D = DeclUpdate.first;
5168
5169 bool HasUpdatedBody = false;
5170 RecordData RecordData;
5171 ASTRecordWriter Record(*this, RecordData);
5172 for (auto &Update : DeclUpdate.second) {
5173 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5174
5175 // An updated body is emitted last, so that the reader doesn't need
5176 // to skip over the lazy body to reach statements for other records.
5177 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5178 HasUpdatedBody = true;
5179 else
5180 Record.push_back(Kind);
5181
5182 switch (Kind) {
5183 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5184 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5185 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5186 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5186, __extension__ __PRETTY_FUNCTION__))
;
5187 Record.push_back(GetDeclRef(Update.getDecl()));
5188 break;
5189
5190 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5191 break;
5192
5193 case UPD_CXX_POINT_OF_INSTANTIATION:
5194 // FIXME: Do we need to also save the template specialization kind here?
5195 Record.AddSourceLocation(Update.getLoc());
5196 break;
5197
5198 case UPD_CXX_ADDED_VAR_DEFINITION: {
5199 const VarDecl *VD = cast<VarDecl>(D);
5200 Record.push_back(VD->isInline());
5201 Record.push_back(VD->isInlineSpecified());
5202 if (VD->getInit()) {
5203 Record.push_back(!VD->isInitKnownICE() ? 1
5204 : (VD->isInitICE() ? 3 : 2));
5205 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5206 } else {
5207 Record.push_back(0);
5208 }
5209 break;
5210 }
5211
5212 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5213 Record.AddStmt(const_cast<Expr *>(
5214 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5215 break;
5216
5217 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5218 Record.AddStmt(
5219 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5220 break;
5221
5222 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5223 auto *RD = cast<CXXRecordDecl>(D);
5224 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5225 Record.push_back(RD->isParamDestroyedInCallee());
5226 Record.push_back(RD->getArgPassingRestrictions());
5227 Record.AddCXXDefinitionData(RD);
5228 Record.AddOffset(WriteDeclContextLexicalBlock(
5229 *Context, const_cast<CXXRecordDecl *>(RD)));
5230
5231 // This state is sometimes updated by template instantiation, when we
5232 // switch from the specialization referring to the template declaration
5233 // to it referring to the template definition.
5234 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5235 Record.push_back(MSInfo->getTemplateSpecializationKind());
5236 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5237 } else {
5238 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5239 Record.push_back(Spec->getTemplateSpecializationKind());
5240 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5241
5242 // The instantiation might have been resolved to a partial
5243 // specialization. If so, record which one.
5244 auto From = Spec->getInstantiatedFrom();
5245 if (auto PartialSpec =
5246 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5247 Record.push_back(true);
5248 Record.AddDeclRef(PartialSpec);
5249 Record.AddTemplateArgumentList(
5250 &Spec->getTemplateInstantiationArgs());
5251 } else {
5252 Record.push_back(false);
5253 }
5254 }
5255 Record.push_back(RD->getTagKind());
5256 Record.AddSourceLocation(RD->getLocation());
5257 Record.AddSourceLocation(RD->getLocStart());
5258 Record.AddSourceRange(RD->getBraceRange());
5259
5260 // Instantiation may change attributes; write them all out afresh.
5261 Record.push_back(D->hasAttrs());
5262 if (D->hasAttrs())
5263 Record.AddAttributes(D->getAttrs());
5264
5265 // FIXME: Ensure we don't get here for explicit instantiations.
5266 break;
5267 }
5268
5269 case UPD_CXX_RESOLVED_DTOR_DELETE:
5270 Record.AddDeclRef(Update.getDecl());
5271 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5272 break;
5273
5274 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5275 addExceptionSpec(
5276 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5277 Record);
5278 break;
5279
5280 case UPD_CXX_DEDUCED_RETURN_TYPE:
5281 Record.push_back(GetOrCreateTypeID(Update.getType()));
5282 break;
5283
5284 case UPD_DECL_MARKED_USED:
5285 break;
5286
5287 case UPD_MANGLING_NUMBER:
5288 case UPD_STATIC_LOCAL_NUMBER:
5289 Record.push_back(Update.getNumber());
5290 break;
5291
5292 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5293 Record.AddSourceRange(
5294 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5295 break;
5296
5297 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5298 Record.AddSourceRange(
5299 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5300 break;
5301
5302 case UPD_DECL_EXPORTED:
5303 Record.push_back(getSubmoduleID(Update.getModule()));
5304 break;
5305
5306 case UPD_ADDED_ATTR_TO_RECORD:
5307 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5308 break;
5309 }
5310 }
5311
5312 if (HasUpdatedBody) {
5313 const auto *Def = cast<FunctionDecl>(D);
5314 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5315 Record.push_back(Def->isInlined());
5316 Record.AddSourceLocation(Def->getInnerLocStart());
5317 Record.AddFunctionDefinition(Def);
5318 }
5319
5320 OffsetsRecord.push_back(GetDeclRef(D));
5321 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5322 }
5323}
5324
5325void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5326 uint32_t Raw = Loc.getRawEncoding();
5327 Record.push_back((Raw << 1) | (Raw >> 31));
5328}
5329
5330void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5331 AddSourceLocation(Range.getBegin(), Record);
5332 AddSourceLocation(Range.getEnd(), Record);
5333}
5334
5335void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5336 Record->push_back(Value.getBitWidth());
5337 const uint64_t *Words = Value.getRawData();
5338 Record->append(Words, Words + Value.getNumWords());
5339}
5340
5341void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5342 Record->push_back(Value.isUnsigned());
5343 AddAPInt(Value);
5344}
5345
5346void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5347 AddAPInt(Value.bitcastToAPInt());
5348}
5349
5350void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5351 Record.push_back(getIdentifierRef(II));
5352}
5353
5354IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5355 if (!II)
5356 return 0;
5357
5358 IdentID &ID = IdentifierIDs[II];
5359 if (ID == 0)
5360 ID = NextIdentID++;
5361 return ID;
5362}
5363
5364MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5365 // Don't emit builtin macros like __LINE__ to the AST file unless they
5366 // have been redefined by the header (in which case they are not
5367 // isBuiltinMacro).
5368 if (!MI || MI->isBuiltinMacro())
5369 return 0;
5370
5371 MacroID &ID = MacroIDs[MI];
5372 if (ID == 0) {
5373 ID = NextMacroID++;
5374 MacroInfoToEmitData Info = { Name, MI, ID };
5375 MacroInfosToEmit.push_back(Info);
5376 }
5377 return ID;
5378}
5379
5380MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5381 if (!MI || MI->isBuiltinMacro())
5382 return 0;
5383
5384 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5384, __extension__ __PRETTY_FUNCTION__))
;
5385 return MacroIDs[MI];
5386}
5387
5388uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5389 return IdentMacroDirectivesOffsetMap.lookup(Name);
5390}
5391
5392void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5393 Record->push_back(Writer->getSelectorRef(SelRef));
5394}
5395
5396SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5397 if (Sel.getAsOpaquePtr() == nullptr) {
5398 return 0;
5399 }
5400
5401 SelectorID SID = SelectorIDs[Sel];
5402 if (SID == 0 && Chain) {
5403 // This might trigger a ReadSelector callback, which will set the ID for
5404 // this selector.
5405 Chain->LoadSelector(Sel);
5406 SID = SelectorIDs[Sel];
5407 }
5408 if (SID == 0) {
5409 SID = NextSelectorID++;
5410 SelectorIDs[Sel] = SID;
5411 }
5412 return SID;
5413}
5414
5415void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5416 AddDeclRef(Temp->getDestructor());
5417}
5418
5419void ASTRecordWriter::AddTemplateArgumentLocInfo(
5420 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5421 switch (Kind) {
5422 case TemplateArgument::Expression:
5423 AddStmt(Arg.getAsExpr());
5424 break;
5425 case TemplateArgument::Type:
5426 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5427 break;
5428 case TemplateArgument::Template:
5429 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5430 AddSourceLocation(Arg.getTemplateNameLoc());
5431 break;
5432 case TemplateArgument::TemplateExpansion:
5433 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5434 AddSourceLocation(Arg.getTemplateNameLoc());
5435 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5436 break;
5437 case TemplateArgument::Null:
5438 case TemplateArgument::Integral:
5439 case TemplateArgument::Declaration:
5440 case TemplateArgument::NullPtr:
5441 case TemplateArgument::Pack:
5442 // FIXME: Is this right?
5443 break;
5444 }
5445}
5446
5447void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5448 AddTemplateArgument(Arg.getArgument());
5449
5450 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5451 bool InfoHasSameExpr
5452 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5453 Record->push_back(InfoHasSameExpr);
5454 if (InfoHasSameExpr)
5455 return; // Avoid storing the same expr twice.
5456 }
5457 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5458}
5459
5460void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5461 if (!TInfo) {
5462 AddTypeRef(QualType());
5463 return;
5464 }
5465
5466 AddTypeRef(TInfo->getType());
5467 AddTypeLoc(TInfo->getTypeLoc());
5468}
5469
5470void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5471 TypeLocWriter TLW(*this);
5472 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5473 TLW.Visit(TL);
5474}
5475
5476void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5477 Record.push_back(GetOrCreateTypeID(T));
5478}
5479
5480TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5481 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5481, __extension__ __PRETTY_FUNCTION__))
;
5482 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5483 if (T.isNull())
5484 return TypeIdx();
5485 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5485, __extension__ __PRETTY_FUNCTION__))
;
5486
5487 TypeIdx &Idx = TypeIdxs[T];
5488 if (Idx.getIndex() == 0) {
5489 if (DoneWritingDeclsAndTypes) {
5490 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5490, __extension__ __PRETTY_FUNCTION__))
;
5491 return TypeIdx();
5492 }
5493
5494 // We haven't seen this type before. Assign it a new ID and put it
5495 // into the queue of types to emit.
5496 Idx = TypeIdx(NextTypeID++);
5497 DeclTypesToEmit.push(T);
5498 }
5499 return Idx;
5500 });
5501}
5502
5503TypeID ASTWriter::getTypeID(QualType T) const {
5504 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5504, __extension__ __PRETTY_FUNCTION__))
;
5505 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5506 if (T.isNull())
5507 return TypeIdx();
5508 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5508, __extension__ __PRETTY_FUNCTION__))
;
5509
5510 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5511 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5511, __extension__ __PRETTY_FUNCTION__))
;
5512 return I->second;
5513 });
5514}
5515
5516void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5517 Record.push_back(GetDeclRef(D));
5518}
5519
5520DeclID ASTWriter::GetDeclRef(const Decl *D) {
5521 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5521, __extension__ __PRETTY_FUNCTION__))
;
5522
5523 if (!D) {
5524 return 0;
5525 }
5526
5527 // If D comes from an AST file, its declaration ID is already known and
5528 // fixed.
5529 if (D->isFromASTFile())
5530 return D->getGlobalID();
5531
5532 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5532, __extension__ __PRETTY_FUNCTION__))
;
5533 DeclID &ID = DeclIDs[D];
5534 if (ID == 0) {
5535 if (DoneWritingDeclsAndTypes) {
5536 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5536, __extension__ __PRETTY_FUNCTION__))
;
5537 return 0;
5538 }
5539
5540 // We haven't seen this declaration before. Give it a new ID and
5541 // enqueue it in the list of declarations to emit.
5542 ID = NextDeclID++;
5543 DeclTypesToEmit.push(const_cast<Decl *>(D));
5544 }
5545
5546 return ID;
5547}
5548
5549DeclID ASTWriter::getDeclID(const Decl *D) {
5550 if (!D)
5551 return 0;
5552
5553 // If D comes from an AST file, its declaration ID is already known and
5554 // fixed.
5555 if (D->isFromASTFile())
5556 return D->getGlobalID();
5557
5558 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5558, __extension__ __PRETTY_FUNCTION__))
;
5559 return DeclIDs[D];
5560}
5561
5562void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5563 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5563, __extension__ __PRETTY_FUNCTION__))
;
5564 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5564, __extension__ __PRETTY_FUNCTION__))
;
5565
5566 SourceLocation Loc = D->getLocation();
5567 if (Loc.isInvalid())
5568 return;
5569
5570 // We only keep track of the file-level declarations of each file.
5571 if (!D->getLexicalDeclContext()->isFileContext())
5572 return;
5573 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5574 // a function/objc method, should not have TU as lexical context.
5575 // TemplateTemplateParmDecls that are part of an alias template, should not
5576 // have TU as lexical context.
5577 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5578 return;
5579
5580 SourceManager &SM = Context->getSourceManager();
5581 SourceLocation FileLoc = SM.getFileLoc(Loc);
5582 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5582, __extension__ __PRETTY_FUNCTION__))
;
5583 FileID FID;
5584 unsigned Offset;
5585 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5586 if (FID.isInvalid())
5587 return;
5588 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5588, __extension__ __PRETTY_FUNCTION__))
;
5589
5590 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5591 if (!Info)
5592 Info = new DeclIDInFileInfo();
5593
5594 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5595 LocDeclIDsTy &Decls = Info->DeclIDs;
5596
5597 if (Decls.empty() || Decls.back().first <= Offset) {
5598 Decls.push_back(LocDecl);
5599 return;
5600 }
5601
5602 LocDeclIDsTy::iterator I =
5603 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5604
5605 Decls.insert(I, LocDecl);
5606}
5607
5608void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5609 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5610 Record->push_back(Name.getNameKind());
5611 switch (Name.getNameKind()) {
5612 case DeclarationName::Identifier:
5613 AddIdentifierRef(Name.getAsIdentifierInfo());
5614 break;
5615
5616 case DeclarationName::ObjCZeroArgSelector:
5617 case DeclarationName::ObjCOneArgSelector:
5618 case DeclarationName::ObjCMultiArgSelector:
5619 AddSelectorRef(Name.getObjCSelector());
5620 break;
5621
5622 case DeclarationName::CXXConstructorName:
5623 case DeclarationName::CXXDestructorName:
5624 case DeclarationName::CXXConversionFunctionName:
5625 AddTypeRef(Name.getCXXNameType());
5626 break;
5627
5628 case DeclarationName::CXXDeductionGuideName:
5629 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5630 break;
5631
5632 case DeclarationName::CXXOperatorName:
5633 Record->push_back(Name.getCXXOverloadedOperator());
5634 break;
5635
5636 case DeclarationName::CXXLiteralOperatorName:
5637 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5638 break;
5639
5640 case DeclarationName::CXXUsingDirective:
5641 // No extra data to emit
5642 break;
5643 }
5644}
5645
5646unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5647 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5648, __extension__ __PRETTY_FUNCTION__))
5648 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5648, __extension__ __PRETTY_FUNCTION__))
;
5649
5650 // Number the anonymous declarations within this context, if we've not
5651 // already done so.
5652 auto It = AnonymousDeclarationNumbers.find(D);
5653 if (It == AnonymousDeclarationNumbers.end()) {
5654 auto *DC = D->getLexicalDeclContext();
5655 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5656 AnonymousDeclarationNumbers[ND] = Number;
5657 });
5658
5659 It = AnonymousDeclarationNumbers.find(D);
5660 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5661, __extension__ __PRETTY_FUNCTION__))
5661 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5661, __extension__ __PRETTY_FUNCTION__))
;
5662 }
5663
5664 return It->second;
5665}
5666
5667void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5668 DeclarationName Name) {
5669 switch (Name.getNameKind()) {
5670 case DeclarationName::CXXConstructorName:
5671 case DeclarationName::CXXDestructorName:
5672 case DeclarationName::CXXConversionFunctionName:
5673 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5674 break;
5675
5676 case DeclarationName::CXXOperatorName:
5677 AddSourceLocation(SourceLocation::getFromRawEncoding(
5678 DNLoc.CXXOperatorName.BeginOpNameLoc));
5679 AddSourceLocation(
5680 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5681 break;
5682
5683 case DeclarationName::CXXLiteralOperatorName:
5684 AddSourceLocation(SourceLocation::getFromRawEncoding(
5685 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5686 break;
5687
5688 case DeclarationName::Identifier:
5689 case DeclarationName::ObjCZeroArgSelector:
5690 case DeclarationName::ObjCOneArgSelector:
5691 case DeclarationName::ObjCMultiArgSelector:
5692 case DeclarationName::CXXUsingDirective:
5693 case DeclarationName::CXXDeductionGuideName:
5694 break;
5695 }
5696}
5697
5698void ASTRecordWriter::AddDeclarationNameInfo(
5699 const DeclarationNameInfo &NameInfo) {
5700 AddDeclarationName(NameInfo.getName());
5701 AddSourceLocation(NameInfo.getLoc());
5702 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5703}
5704
5705void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5706 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5707 Record->push_back(Info.NumTemplParamLists);
5708 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5709 AddTemplateParameterList(Info.TemplParamLists[i]);
5710}
5711
5712void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5713 // Nested name specifiers usually aren't too long. I think that 8 would
5714 // typically accommodate the vast majority.
5715 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5716
5717 // Push each of the NNS's onto a stack for serialization in reverse order.
5718 while (NNS) {
5719 NestedNames.push_back(NNS);
5720 NNS = NNS->getPrefix();
5721 }
5722
5723 Record->push_back(NestedNames.size());
5724 while(!NestedNames.empty()) {
5725 NNS = NestedNames.pop_back_val();
5726 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5727 Record->push_back(Kind);
5728 switch (Kind) {
5729 case NestedNameSpecifier::Identifier:
5730 AddIdentifierRef(NNS->getAsIdentifier());
5731 break;
5732
5733 case NestedNameSpecifier::Namespace:
5734 AddDeclRef(NNS->getAsNamespace());
5735 break;
5736
5737 case NestedNameSpecifier::NamespaceAlias:
5738 AddDeclRef(NNS->getAsNamespaceAlias());
5739 break;
5740
5741 case NestedNameSpecifier::TypeSpec:
5742 case NestedNameSpecifier::TypeSpecWithTemplate:
5743 AddTypeRef(QualType(NNS->getAsType(), 0));
5744 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5745 break;
5746
5747 case NestedNameSpecifier::Global:
5748 // Don't need to write an associated value.
5749 break;
5750
5751 case NestedNameSpecifier::Super:
5752 AddDeclRef(NNS->getAsRecordDecl());
5753 break;
5754 }
5755 }
5756}
5757
5758void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5759 // Nested name specifiers usually aren't too long. I think that 8 would
5760 // typically accommodate the vast majority.
5761 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5762
5763 // Push each of the nested-name-specifiers's onto a stack for
5764 // serialization in reverse order.
5765 while (NNS) {
5766 NestedNames.push_back(NNS);
5767 NNS = NNS.getPrefix();
5768 }
5769
5770 Record->push_back(NestedNames.size());
5771 while(!NestedNames.empty()) {
5772 NNS = NestedNames.pop_back_val();
5773 NestedNameSpecifier::SpecifierKind Kind
5774 = NNS.getNestedNameSpecifier()->getKind();
5775 Record->push_back(Kind);
5776 switch (Kind) {
5777 case NestedNameSpecifier::Identifier:
5778 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5779 AddSourceRange(NNS.getLocalSourceRange());
5780 break;
5781
5782 case NestedNameSpecifier::Namespace:
5783 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5784 AddSourceRange(NNS.getLocalSourceRange());
5785 break;
5786
5787 case NestedNameSpecifier::NamespaceAlias:
5788 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5789 AddSourceRange(NNS.getLocalSourceRange());
5790 break;
5791
5792 case NestedNameSpecifier::TypeSpec:
5793 case NestedNameSpecifier::TypeSpecWithTemplate:
5794 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5795 AddTypeRef(NNS.getTypeLoc().getType());
5796 AddTypeLoc(NNS.getTypeLoc());
5797 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5798 break;
5799
5800 case NestedNameSpecifier::Global:
5801 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5802 break;
5803
5804 case NestedNameSpecifier::Super:
5805 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5806 AddSourceRange(NNS.getLocalSourceRange());
5807 break;
5808 }
5809 }
5810}
5811
5812void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5813 TemplateName::NameKind Kind = Name.getKind();
5814 Record->push_back(Kind);
5815 switch (Kind) {
5816 case TemplateName::Template:
5817 AddDeclRef(Name.getAsTemplateDecl());
5818 break;
5819
5820 case TemplateName::OverloadedTemplate: {
5821 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5822 Record->push_back(OvT->size());
5823 for (const auto &I : *OvT)
5824 AddDeclRef(I);
5825 break;
5826 }
5827
5828 case TemplateName::QualifiedTemplate: {
5829 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5830 AddNestedNameSpecifier(QualT->getQualifier());
5831 Record->push_back(QualT->hasTemplateKeyword());
5832 AddDeclRef(QualT->getTemplateDecl());
5833 break;
5834 }
5835
5836 case TemplateName::DependentTemplate: {
5837 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5838 AddNestedNameSpecifier(DepT->getQualifier());
5839 Record->push_back(DepT->isIdentifier());
5840 if (DepT->isIdentifier())
5841 AddIdentifierRef(DepT->getIdentifier());
5842 else
5843 Record->push_back(DepT->getOperator());
5844 break;
5845 }
5846
5847 case TemplateName::SubstTemplateTemplateParm: {
5848 SubstTemplateTemplateParmStorage *subst
5849 = Name.getAsSubstTemplateTemplateParm();
5850 AddDeclRef(subst->getParameter());
5851 AddTemplateName(subst->getReplacement());
5852 break;
5853 }
5854
5855 case TemplateName::SubstTemplateTemplateParmPack: {
5856 SubstTemplateTemplateParmPackStorage *SubstPack
5857 = Name.getAsSubstTemplateTemplateParmPack();
5858 AddDeclRef(SubstPack->getParameterPack());
5859 AddTemplateArgument(SubstPack->getArgumentPack());
5860 break;
5861 }
5862 }
5863}
5864
5865void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5866 Record->push_back(Arg.getKind());
5867 switch (Arg.getKind()) {
5868 case TemplateArgument::Null:
5869 break;
5870 case TemplateArgument::Type:
5871 AddTypeRef(Arg.getAsType());
5872 break;
5873 case TemplateArgument::Declaration:
5874 AddDeclRef(Arg.getAsDecl());
5875 AddTypeRef(Arg.getParamTypeForDecl());
5876 break;
5877 case TemplateArgument::NullPtr:
5878 AddTypeRef(Arg.getNullPtrType());
5879 break;
5880 case TemplateArgument::Integral:
5881 AddAPSInt(Arg.getAsIntegral());
5882 AddTypeRef(Arg.getIntegralType());
5883 break;
5884 case TemplateArgument::Template:
5885 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5886 break;
5887 case TemplateArgument::TemplateExpansion:
5888 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5889 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5890 Record->push_back(*NumExpansions + 1);
5891 else
5892 Record->push_back(0);
5893 break;
5894 case TemplateArgument::Expression:
5895 AddStmt(Arg.getAsExpr());
5896 break;
5897 case TemplateArgument::Pack:
5898 Record->push_back(Arg.pack_size());
5899 for (const auto &P : Arg.pack_elements())
5900 AddTemplateArgument(P);
5901 break;
5902 }
5903}
5904
5905void ASTRecordWriter::AddTemplateParameterList(
5906 const TemplateParameterList *TemplateParams) {
5907 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5907, __extension__ __PRETTY_FUNCTION__))
;
5908 AddSourceLocation(TemplateParams->getTemplateLoc());
5909 AddSourceLocation(TemplateParams->getLAngleLoc());
5910 AddSourceLocation(TemplateParams->getRAngleLoc());
5911 // TODO: Concepts
5912 Record->push_back(TemplateParams->size());
5913 for (const auto &P : *TemplateParams)
5914 AddDeclRef(P);
5915}
5916
5917/// Emit a template argument list.
5918void ASTRecordWriter::AddTemplateArgumentList(
5919 const TemplateArgumentList *TemplateArgs) {
5920 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5920, __extension__ __PRETTY_FUNCTION__))
;
5921 Record->push_back(TemplateArgs->size());
5922 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5923 AddTemplateArgument(TemplateArgs->get(i));
5924}
5925
5926void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5927 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5928 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5928, __extension__ __PRETTY_FUNCTION__))
;
5929 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5930 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5931 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5932 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5933 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5934 AddTemplateArgumentLoc(TemplArgs[i]);
5935}
5936
5937void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5938 Record->push_back(Set.size());
5939 for (ASTUnresolvedSet::const_iterator
5940 I = Set.begin(), E = Set.end(); I != E; ++I) {
5941 AddDeclRef(I.getDecl());
5942 Record->push_back(I.getAccess());
5943 }
5944}
5945
5946// FIXME: Move this out of the main ASTRecordWriter interface.
5947void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5948 Record->push_back(Base.isVirtual());
5949 Record->push_back(Base.isBaseOfClass());
5950 Record->push_back(Base.getAccessSpecifierAsWritten());
5951 Record->push_back(Base.getInheritConstructors());
5952 AddTypeSourceInfo(Base.getTypeSourceInfo());
5953 AddSourceRange(Base.getSourceRange());
5954 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5955 : SourceLocation());
5956}
5957
5958static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5959 ArrayRef<CXXBaseSpecifier> Bases) {
5960 ASTWriter::RecordData Record;
5961 ASTRecordWriter Writer(W, Record);
5962 Writer.push_back(Bases.size());
5963
5964 for (auto &Base : Bases)
5965 Writer.AddCXXBaseSpecifier(Base);
5966
5967 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5968}
5969
5970// FIXME: Move this out of the main ASTRecordWriter interface.
5971void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5972 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5973}
5974
5975static uint64_t
5976EmitCXXCtorInitializers(ASTWriter &W,
5977 ArrayRef<CXXCtorInitializer *> CtorInits) {
5978 ASTWriter::RecordData Record;
5979 ASTRecordWriter Writer(W, Record);
5980 Writer.push_back(CtorInits.size());
5981
5982 for (auto *Init : CtorInits) {
5983 if (Init->isBaseInitializer()) {
5984 Writer.push_back(CTOR_INITIALIZER_BASE);
5985 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5986 Writer.push_back(Init->isBaseVirtual());
5987 } else if (Init->isDelegatingInitializer()) {
5988 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5989 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5990 } else if (Init->isMemberInitializer()){
5991 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5992 Writer.AddDeclRef(Init->getMember());
5993 } else {
5994 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5995 Writer.AddDeclRef(Init->getIndirectMember());
5996 }
5997
5998 Writer.AddSourceLocation(Init->getMemberLocation());
5999 Writer.AddStmt(Init->getInit());
6000 Writer.AddSourceLocation(Init->getLParenLoc());
6001 Writer.AddSourceLocation(Init->getRParenLoc());
6002 Writer.push_back(Init->isWritten());
6003 if (Init->isWritten())
6004 Writer.push_back(Init->getSourceOrder());
6005 }
6006
6007 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
6008}
6009
6010// FIXME: Move this out of the main ASTRecordWriter interface.
6011void ASTRecordWriter::AddCXXCtorInitializers(
6012 ArrayRef<CXXCtorInitializer *> CtorInits) {
6013 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
6014}
6015
6016void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
6017 auto &Data = D->data();
6018 Record->push_back(Data.IsLambda);
6019 Record->push_back(Data.UserDeclaredConstructor);
6020 Record->push_back(Data.UserDeclaredSpecialMembers);
6021 Record->push_back(Data.Aggregate);
6022 Record->push_back(Data.PlainOldData);
6023 Record->push_back(Data.Empty);
6024 Record->push_back(Data.Polymorphic);
6025 Record->push_back(Data.Abstract);
6026 Record->push_back(Data.IsStandardLayout);
6027 Record->push_back(Data.IsCXX11StandardLayout);
6028 Record->push_back(Data.HasBasesWithFields);
6029 Record->push_back(Data.HasBasesWithNonStaticDataMembers);
6030 Record->push_back(Data.HasPrivateFields);
6031 Record->push_back(Data.HasProtectedFields);
6032 Record->push_back(Data.HasPublicFields);
6033 Record->push_back(Data.HasMutableFields);
6034 Record->push_back(Data.HasVariantMembers);
6035 Record->push_back(Data.HasOnlyCMembers);
6036 Record->push_back(Data.HasInClassInitializer);
6037 Record->push_back(Data.HasUninitializedReferenceMember);
6038 Record->push_back(Data.HasUninitializedFields);
6039 Record->push_back(Data.HasInheritedConstructor);
6040 Record->push_back(Data.HasInheritedAssignment);
6041 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
6042 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
6043 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
6044 Record->push_back(Data.NeedOverloadResolutionForDestructor);
6045 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
6046 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
6047 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
6048 Record->push_back(Data.DefaultedDestructorIsDeleted);
6049 Record->push_back(Data.HasTrivialSpecialMembers);
6050 Record->push_back(Data.HasTrivialSpecialMembersForCall);
6051 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
6052 Record->push_back(Data.DeclaredNonTrivialSpecialMembersForCall);
6053 Record->push_back(Data.HasIrrelevantDestructor);
6054 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
6055 Record->push_back(Data.HasDefaultedDefaultConstructor);
6056 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
6057 Record->push_back(Data.HasConstexprDefaultConstructor);
6058 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
6059 Record->push_back(Data.ComputedVisibleConversions);
6060 Record->push_back(Data.UserProvidedDefaultConstructor);
6061 Record->push_back(Data.DeclaredSpecialMembers);
6062 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
6063 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
6064 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
6065 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
6066 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6067
6068 // getODRHash will compute the ODRHash if it has not been previously computed.
6069 Record->push_back(D->getODRHash());
6070 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6071 Writer->WritingModule && !D->isDependentType();
6072 Record->push_back(ModulesDebugInfo);
6073 if (ModulesDebugInfo)
6074 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6075
6076 // IsLambda bit is already saved.
6077
6078 Record->push_back(Data.NumBases);
6079 if (Data.NumBases > 0)
6080 AddCXXBaseSpecifiers(Data.bases());
6081
6082 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6083 Record->push_back(Data.NumVBases);
6084 if (Data.NumVBases > 0)
6085 AddCXXBaseSpecifiers(Data.vbases());
6086
6087 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6088 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6089 // Data.Definition is the owning decl, no need to write it.
6090 AddDeclRef(D->getFirstFriend());
6091
6092 // Add lambda-specific data.
6093 if (Data.IsLambda) {
6094 auto &Lambda = D->getLambdaData();
6095 Record->push_back(Lambda.Dependent);
6096 Record->push_back(Lambda.IsGenericLambda);
6097 Record->push_back(Lambda.CaptureDefault);
6098 Record->push_back(Lambda.NumCaptures);
6099 Record->push_back(Lambda.NumExplicitCaptures);
6100 Record->push_back(Lambda.ManglingNumber);
6101 AddDeclRef(D->getLambdaContextDecl());
6102 AddTypeSourceInfo(Lambda.MethodTyInfo);
6103 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6104 const LambdaCapture &Capture = Lambda.Captures[I];
6105 AddSourceLocation(Capture.getLocation());
6106 Record->push_back(Capture.isImplicit());
6107 Record->push_back(Capture.getCaptureKind());
6108 switch (Capture.getCaptureKind()) {
6109 case LCK_StarThis:
6110 case LCK_This:
6111 case LCK_VLAType:
6112 break;
6113 case LCK_ByCopy:
6114 case LCK_ByRef:
6115 VarDecl *Var =
6116 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6117 AddDeclRef(Var);
6118 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6119 : SourceLocation());
6120 break;
6121 }
6122 }
6123 }
6124}
6125
6126void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6127 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6127, __extension__ __PRETTY_FUNCTION__))
;
6128 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __extension__ __PRETTY_FUNCTION__))
;
6129 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6130 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6131 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6132 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6133 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6134 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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
6135 "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~svn338205/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6135, __extension__ __PRETTY_FUNCTION__))
;
6136
6137 Chain = Reader;
6138
6139 // Note, this will get called multiple times, once one the reader starts up
6140 // and again each time it's done reading a PCH or module.
6141 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6142 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6143 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6144 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6145 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6146 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6147 NextDeclID = FirstDeclID;
6148 NextTypeID = FirstTypeID;
6149 NextIdentID = FirstIdentID;
6150 NextMacroID = FirstMacroID;
6151 NextSelectorID = FirstSelectorID;
6152 NextSubmoduleID = FirstSubmoduleID;
6153}
6154
6155void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6156 // Always keep the highest ID. See \p TypeRead() for more information.
6157 IdentID &StoredID = IdentifierIDs[II];
6158 if (ID > StoredID)
6159 StoredID = ID;
6160}
6161
6162void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6163 // Always keep the highest ID. See \p TypeRead() for more information.
6164 MacroID &StoredID = MacroIDs[MI];
6165 if (ID > StoredID)
6166 StoredID = ID;
6167}
6168
6169void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6170 // Always take the highest-numbered type index. This copes with an interesting
6171 // case for chained AST writing where we schedule writing the type and then,
6172 // later, deserialize the type from another AST. In this case, we want to
6173 // keep the higher-numbered entry so that we can properly write it out to
6174 // the AST file.
6175 TypeIdx &StoredIdx = TypeIdxs[T];
6176 if (Idx.getIndex() >= StoredIdx.getIndex())
6177 StoredIdx = Idx;
6178}
6179
6180void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6181 // Always keep the highest ID. See \p TypeRead() for more information.
6182 SelectorID &StoredID = SelectorIDs[S];
6183 if (ID > StoredID)
6184 StoredID = ID;
6185}
6186
6187void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,