Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 2095, column 19
Potential memory leak

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ASTWriter.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -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-8/lib/clang/8.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn350071/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/lib/Serialization -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn350071=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -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-2018-12-27-042839-1215-1 -x c++ /build/llvm-toolchain-snapshot-8~svn350071/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-8~svn350071/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().getAsOpaqueValue());
314 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
315 addExceptionSpec(T, Record);
316
317 Record.push_back(T->getNumParams());
318 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
319 Record.AddTypeRef(T->getParamType(I));
320
321 if (T->hasExtParameterInfos()) {
322 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
323 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
324 }
325
326 if (T->isVariadic() || T->hasTrailingReturn() || T->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 ?")((!T->isCanonicalUnqualified() && "Invalid typedef ?"
) ? static_cast<void> (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 341, __PRETTY_FUNCTION__))
;
342 Record.AddTypeRef(T->getCanonicalTypeInternal());
343 Code = TYPE_TYPEDEF;
344}
345
346void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
347 Record.AddStmt(T->getUnderlyingExpr());
348 Code = TYPE_TYPEOF_EXPR;
349}
350
351void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
352 Record.AddTypeRef(T->getUnderlyingType());
353 Code = TYPE_TYPEOF;
354}
355
356void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
357 Record.AddTypeRef(T->getUnderlyingType());
358 Record.AddStmt(T->getUnderlyingExpr());
359 Code = TYPE_DECLTYPE;
360}
361
362void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
363 Record.AddTypeRef(T->getBaseType());
364 Record.AddTypeRef(T->getUnderlyingType());
365 Record.push_back(T->getUTTKind());
366 Code = TYPE_UNARY_TRANSFORM;
367}
368
369void ASTTypeWriter::VisitAutoType(const AutoType *T) {
370 Record.AddTypeRef(T->getDeducedType());
371 Record.push_back((unsigned)T->getKeyword());
372 if (T->getDeducedType().isNull())
373 Record.push_back(T->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() &&((!T->isBeingDefined() && "Cannot serialize in the middle of a type definition"
) ? static_cast<void> (0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 390, __PRETTY_FUNCTION__))
390 "Cannot serialize in the middle of a type definition")((!T->isBeingDefined() && "Cannot serialize in the middle of a type definition"
) ? static_cast<void> (0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 390, __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.AddAttr(TL.getAttr());
774}
775
776void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
777 Record.AddSourceLocation(TL.getNameLoc());
778}
779
780void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
781 SubstTemplateTypeParmTypeLoc TL) {
782 Record.AddSourceLocation(TL.getNameLoc());
783}
784
785void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
786 SubstTemplateTypeParmPackTypeLoc TL) {
787 Record.AddSourceLocation(TL.getNameLoc());
788}
789
790void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
791 TemplateSpecializationTypeLoc TL) {
792 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
793 Record.AddSourceLocation(TL.getTemplateNameLoc());
794 Record.AddSourceLocation(TL.getLAngleLoc());
795 Record.AddSourceLocation(TL.getRAngleLoc());
796 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
797 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
798 TL.getArgLoc(i).getLocInfo());
799}
800
801void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
802 Record.AddSourceLocation(TL.getLParenLoc());
803 Record.AddSourceLocation(TL.getRParenLoc());
804}
805
806void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
807 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
808 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
809}
810
811void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
812 Record.AddSourceLocation(TL.getNameLoc());
813}
814
815void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
816 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
817 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
818 Record.AddSourceLocation(TL.getNameLoc());
819}
820
821void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
822 DependentTemplateSpecializationTypeLoc TL) {
823 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
824 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
825 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
826 Record.AddSourceLocation(TL.getTemplateNameLoc());
827 Record.AddSourceLocation(TL.getLAngleLoc());
828 Record.AddSourceLocation(TL.getRAngleLoc());
829 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
830 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
831 TL.getArgLoc(I).getLocInfo());
832}
833
834void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
835 Record.AddSourceLocation(TL.getEllipsisLoc());
836}
837
838void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
839 Record.AddSourceLocation(TL.getNameLoc());
840}
841
842void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
843 Record.push_back(TL.hasBaseTypeAsWritten());
844 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
845 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
846 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
847 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
848 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
849 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
850 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
851 Record.AddSourceLocation(TL.getProtocolLoc(i));
852}
853
854void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
855 Record.AddSourceLocation(TL.getStarLoc());
856}
857
858void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
859 Record.AddSourceLocation(TL.getKWLoc());
860 Record.AddSourceLocation(TL.getLParenLoc());
861 Record.AddSourceLocation(TL.getRParenLoc());
862}
863
864void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
865 Record.AddSourceLocation(TL.getKWLoc());
866}
867
868void ASTWriter::WriteTypeAbbrevs() {
869 using namespace llvm;
870
871 std::shared_ptr<BitCodeAbbrev> Abv;
872
873 // Abbreviation for TYPE_EXT_QUAL
874 Abv = std::make_shared<BitCodeAbbrev>();
875 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
876 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
877 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
878 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
879
880 // Abbreviation for TYPE_FUNCTION_PROTO
881 Abv = std::make_shared<BitCodeAbbrev>();
882 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
883 // FunctionType
884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
886 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
887 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
889 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
890 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
891 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
892 // FunctionProtoType
893 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
894 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
895 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
896 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
897 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
898 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
901 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
902}
903
904//===----------------------------------------------------------------------===//
905// ASTWriter Implementation
906//===----------------------------------------------------------------------===//
907
908static void EmitBlockID(unsigned ID, const char *Name,
909 llvm::BitstreamWriter &Stream,
910 ASTWriter::RecordDataImpl &Record) {
911 Record.clear();
912 Record.push_back(ID);
913 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
914
915 // Emit the block name if present.
916 if (!Name || Name[0] == 0)
917 return;
918 Record.clear();
919 while (*Name)
920 Record.push_back(*Name++);
921 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
922}
923
924static void EmitRecordID(unsigned ID, const char *Name,
925 llvm::BitstreamWriter &Stream,
926 ASTWriter::RecordDataImpl &Record) {
927 Record.clear();
928 Record.push_back(ID);
929 while (*Name)
930 Record.push_back(*Name++);
931 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
932}
933
934static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
935 ASTWriter::RecordDataImpl &Record) {
936#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
937 RECORD(STMT_STOP);
938 RECORD(STMT_NULL_PTR);
939 RECORD(STMT_REF_PTR);
940 RECORD(STMT_NULL);
941 RECORD(STMT_COMPOUND);
942 RECORD(STMT_CASE);
943 RECORD(STMT_DEFAULT);
944 RECORD(STMT_LABEL);
945 RECORD(STMT_ATTRIBUTED);
946 RECORD(STMT_IF);
947 RECORD(STMT_SWITCH);
948 RECORD(STMT_WHILE);
949 RECORD(STMT_DO);
950 RECORD(STMT_FOR);
951 RECORD(STMT_GOTO);
952 RECORD(STMT_INDIRECT_GOTO);
953 RECORD(STMT_CONTINUE);
954 RECORD(STMT_BREAK);
955 RECORD(STMT_RETURN);
956 RECORD(STMT_DECL);
957 RECORD(STMT_GCCASM);
958 RECORD(STMT_MSASM);
959 RECORD(EXPR_PREDEFINED);
960 RECORD(EXPR_DECL_REF);
961 RECORD(EXPR_INTEGER_LITERAL);
962 RECORD(EXPR_FLOATING_LITERAL);
963 RECORD(EXPR_IMAGINARY_LITERAL);
964 RECORD(EXPR_STRING_LITERAL);
965 RECORD(EXPR_CHARACTER_LITERAL);
966 RECORD(EXPR_PAREN);
967 RECORD(EXPR_PAREN_LIST);
968 RECORD(EXPR_UNARY_OPERATOR);
969 RECORD(EXPR_SIZEOF_ALIGN_OF);
970 RECORD(EXPR_ARRAY_SUBSCRIPT);
971 RECORD(EXPR_CALL);
972 RECORD(EXPR_MEMBER);
973 RECORD(EXPR_BINARY_OPERATOR);
974 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
975 RECORD(EXPR_CONDITIONAL_OPERATOR);
976 RECORD(EXPR_IMPLICIT_CAST);
977 RECORD(EXPR_CSTYLE_CAST);
978 RECORD(EXPR_COMPOUND_LITERAL);
979 RECORD(EXPR_EXT_VECTOR_ELEMENT);
980 RECORD(EXPR_INIT_LIST);
981 RECORD(EXPR_DESIGNATED_INIT);
982 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
983 RECORD(EXPR_IMPLICIT_VALUE_INIT);
984 RECORD(EXPR_NO_INIT);
985 RECORD(EXPR_VA_ARG);
986 RECORD(EXPR_ADDR_LABEL);
987 RECORD(EXPR_STMT);
988 RECORD(EXPR_CHOOSE);
989 RECORD(EXPR_GNU_NULL);
990 RECORD(EXPR_SHUFFLE_VECTOR);
991 RECORD(EXPR_BLOCK);
992 RECORD(EXPR_GENERIC_SELECTION);
993 RECORD(EXPR_OBJC_STRING_LITERAL);
994 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
995 RECORD(EXPR_OBJC_ARRAY_LITERAL);
996 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
997 RECORD(EXPR_OBJC_ENCODE);
998 RECORD(EXPR_OBJC_SELECTOR_EXPR);
999 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
1000 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
1001 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
1002 RECORD(EXPR_OBJC_KVC_REF_EXPR);
1003 RECORD(EXPR_OBJC_MESSAGE_EXPR);
1004 RECORD(STMT_OBJC_FOR_COLLECTION);
1005 RECORD(STMT_OBJC_CATCH);
1006 RECORD(STMT_OBJC_FINALLY);
1007 RECORD(STMT_OBJC_AT_TRY);
1008 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1009 RECORD(STMT_OBJC_AT_THROW);
1010 RECORD(EXPR_OBJC_BOOL_LITERAL);
1011 RECORD(STMT_CXX_CATCH);
1012 RECORD(STMT_CXX_TRY);
1013 RECORD(STMT_CXX_FOR_RANGE);
1014 RECORD(EXPR_CXX_OPERATOR_CALL);
1015 RECORD(EXPR_CXX_MEMBER_CALL);
1016 RECORD(EXPR_CXX_CONSTRUCT);
1017 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1018 RECORD(EXPR_CXX_STATIC_CAST);
1019 RECORD(EXPR_CXX_DYNAMIC_CAST);
1020 RECORD(EXPR_CXX_REINTERPRET_CAST);
1021 RECORD(EXPR_CXX_CONST_CAST);
1022 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1023 RECORD(EXPR_USER_DEFINED_LITERAL);
1024 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1025 RECORD(EXPR_CXX_BOOL_LITERAL);
1026 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1027 RECORD(EXPR_CXX_TYPEID_EXPR);
1028 RECORD(EXPR_CXX_TYPEID_TYPE);
1029 RECORD(EXPR_CXX_THIS);
1030 RECORD(EXPR_CXX_THROW);
1031 RECORD(EXPR_CXX_DEFAULT_ARG);
1032 RECORD(EXPR_CXX_DEFAULT_INIT);
1033 RECORD(EXPR_CXX_BIND_TEMPORARY);
1034 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1035 RECORD(EXPR_CXX_NEW);
1036 RECORD(EXPR_CXX_DELETE);
1037 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1038 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1039 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1040 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1041 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1042 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1043 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1044 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1045 RECORD(EXPR_CXX_NOEXCEPT);
1046 RECORD(EXPR_OPAQUE_VALUE);
1047 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1048 RECORD(EXPR_TYPE_TRAIT);
1049 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1050 RECORD(EXPR_PACK_EXPANSION);
1051 RECORD(EXPR_SIZEOF_PACK);
1052 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1053 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1054 RECORD(EXPR_FUNCTION_PARM_PACK);
1055 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1056 RECORD(EXPR_CUDA_KERNEL_CALL);
1057 RECORD(EXPR_CXX_UUIDOF_EXPR);
1058 RECORD(EXPR_CXX_UUIDOF_TYPE);
1059 RECORD(EXPR_LAMBDA);
1060#undef RECORD
1061}
1062
1063void ASTWriter::WriteBlockInfoBlock() {
1064 RecordData Record;
1065 Stream.EnterBlockInfoBlock();
1066
1067#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1068#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1069
1070 // Control Block.
1071 BLOCK(CONTROL_BLOCK);
1072 RECORD(METADATA);
1073 RECORD(MODULE_NAME);
1074 RECORD(MODULE_DIRECTORY);
1075 RECORD(MODULE_MAP_FILE);
1076 RECORD(IMPORTS);
1077 RECORD(ORIGINAL_FILE);
1078 RECORD(ORIGINAL_PCH_DIR);
1079 RECORD(ORIGINAL_FILE_ID);
1080 RECORD(INPUT_FILE_OFFSETS);
1081
1082 BLOCK(OPTIONS_BLOCK);
1083 RECORD(LANGUAGE_OPTIONS);
1084 RECORD(TARGET_OPTIONS);
1085 RECORD(FILE_SYSTEM_OPTIONS);
1086 RECORD(HEADER_SEARCH_OPTIONS);
1087 RECORD(PREPROCESSOR_OPTIONS);
1088
1089 BLOCK(INPUT_FILES_BLOCK);
1090 RECORD(INPUT_FILE);
1091
1092 // AST Top-Level Block.
1093 BLOCK(AST_BLOCK);
1094 RECORD(TYPE_OFFSET);
1095 RECORD(DECL_OFFSET);
1096 RECORD(IDENTIFIER_OFFSET);
1097 RECORD(IDENTIFIER_TABLE);
1098 RECORD(EAGERLY_DESERIALIZED_DECLS);
1099 RECORD(MODULAR_CODEGEN_DECLS);
1100 RECORD(SPECIAL_TYPES);
1101 RECORD(STATISTICS);
1102 RECORD(TENTATIVE_DEFINITIONS);
1103 RECORD(SELECTOR_OFFSETS);
1104 RECORD(METHOD_POOL);
1105 RECORD(PP_COUNTER_VALUE);
1106 RECORD(SOURCE_LOCATION_OFFSETS);
1107 RECORD(SOURCE_LOCATION_PRELOADS);
1108 RECORD(EXT_VECTOR_DECLS);
1109 RECORD(UNUSED_FILESCOPED_DECLS);
1110 RECORD(PPD_ENTITIES_OFFSETS);
1111 RECORD(VTABLE_USES);
1112 RECORD(PPD_SKIPPED_RANGES);
1113 RECORD(REFERENCED_SELECTOR_POOL);
1114 RECORD(TU_UPDATE_LEXICAL);
1115 RECORD(SEMA_DECL_REFS);
1116 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1117 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1118 RECORD(UPDATE_VISIBLE);
1119 RECORD(DECL_UPDATE_OFFSETS);
1120 RECORD(DECL_UPDATES);
1121 RECORD(CUDA_SPECIAL_DECL_REFS);
1122 RECORD(HEADER_SEARCH_TABLE);
1123 RECORD(FP_PRAGMA_OPTIONS);
1124 RECORD(OPENCL_EXTENSIONS);
1125 RECORD(OPENCL_EXTENSION_TYPES);
1126 RECORD(OPENCL_EXTENSION_DECLS);
1127 RECORD(DELEGATING_CTORS);
1128 RECORD(KNOWN_NAMESPACES);
1129 RECORD(MODULE_OFFSET_MAP);
1130 RECORD(SOURCE_MANAGER_LINE_TABLE);
1131 RECORD(OBJC_CATEGORIES_MAP);
1132 RECORD(FILE_SORTED_DECLS);
1133 RECORD(IMPORTED_MODULES);
1134 RECORD(OBJC_CATEGORIES);
1135 RECORD(MACRO_OFFSET);
1136 RECORD(INTERESTING_IDENTIFIERS);
1137 RECORD(UNDEFINED_BUT_USED);
1138 RECORD(LATE_PARSED_TEMPLATE);
1139 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1140 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1141 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1142 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1143 RECORD(DELETE_EXPRS_TO_ANALYZE);
1144 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1145 RECORD(PP_CONDITIONAL_STACK);
1146
1147 // SourceManager Block.
1148 BLOCK(SOURCE_MANAGER_BLOCK);
1149 RECORD(SM_SLOC_FILE_ENTRY);
1150 RECORD(SM_SLOC_BUFFER_ENTRY);
1151 RECORD(SM_SLOC_BUFFER_BLOB);
1152 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1153 RECORD(SM_SLOC_EXPANSION_ENTRY);
1154
1155 // Preprocessor Block.
1156 BLOCK(PREPROCESSOR_BLOCK);
1157 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1158 RECORD(PP_MACRO_FUNCTION_LIKE);
1159 RECORD(PP_MACRO_OBJECT_LIKE);
1160 RECORD(PP_MODULE_MACRO);
1161 RECORD(PP_TOKEN);
1162
1163 // Submodule Block.
1164 BLOCK(SUBMODULE_BLOCK);
1165 RECORD(SUBMODULE_METADATA);
1166 RECORD(SUBMODULE_DEFINITION);
1167 RECORD(SUBMODULE_UMBRELLA_HEADER);
1168 RECORD(SUBMODULE_HEADER);
1169 RECORD(SUBMODULE_TOPHEADER);
1170 RECORD(SUBMODULE_UMBRELLA_DIR);
1171 RECORD(SUBMODULE_IMPORTS);
1172 RECORD(SUBMODULE_EXPORTS);
1173 RECORD(SUBMODULE_REQUIRES);
1174 RECORD(SUBMODULE_EXCLUDED_HEADER);
1175 RECORD(SUBMODULE_LINK_LIBRARY);
1176 RECORD(SUBMODULE_CONFIG_MACRO);
1177 RECORD(SUBMODULE_CONFLICT);
1178 RECORD(SUBMODULE_PRIVATE_HEADER);
1179 RECORD(SUBMODULE_TEXTUAL_HEADER);
1180 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1181 RECORD(SUBMODULE_INITIALIZERS);
1182 RECORD(SUBMODULE_EXPORT_AS);
1183
1184 // Comments Block.
1185 BLOCK(COMMENTS_BLOCK);
1186 RECORD(COMMENTS_RAW_COMMENT);
1187
1188 // Decls and Types block.
1189 BLOCK(DECLTYPES_BLOCK);
1190 RECORD(TYPE_EXT_QUAL);
1191 RECORD(TYPE_COMPLEX);
1192 RECORD(TYPE_POINTER);
1193 RECORD(TYPE_BLOCK_POINTER);
1194 RECORD(TYPE_LVALUE_REFERENCE);
1195 RECORD(TYPE_RVALUE_REFERENCE);
1196 RECORD(TYPE_MEMBER_POINTER);
1197 RECORD(TYPE_CONSTANT_ARRAY);
1198 RECORD(TYPE_INCOMPLETE_ARRAY);
1199 RECORD(TYPE_VARIABLE_ARRAY);
1200 RECORD(TYPE_VECTOR);
1201 RECORD(TYPE_EXT_VECTOR);
1202 RECORD(TYPE_FUNCTION_NO_PROTO);
1203 RECORD(TYPE_FUNCTION_PROTO);
1204 RECORD(TYPE_TYPEDEF);
1205 RECORD(TYPE_TYPEOF_EXPR);
1206 RECORD(TYPE_TYPEOF);
1207 RECORD(TYPE_RECORD);
1208 RECORD(TYPE_ENUM);
1209 RECORD(TYPE_OBJC_INTERFACE);
1210 RECORD(TYPE_OBJC_OBJECT_POINTER);
1211 RECORD(TYPE_DECLTYPE);
1212 RECORD(TYPE_ELABORATED);
1213 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1214 RECORD(TYPE_UNRESOLVED_USING);
1215 RECORD(TYPE_INJECTED_CLASS_NAME);
1216 RECORD(TYPE_OBJC_OBJECT);
1217 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1218 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1219 RECORD(TYPE_DEPENDENT_NAME);
1220 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1221 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1222 RECORD(TYPE_PAREN);
1223 RECORD(TYPE_PACK_EXPANSION);
1224 RECORD(TYPE_ATTRIBUTED);
1225 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1226 RECORD(TYPE_AUTO);
1227 RECORD(TYPE_UNARY_TRANSFORM);
1228 RECORD(TYPE_ATOMIC);
1229 RECORD(TYPE_DECAYED);
1230 RECORD(TYPE_ADJUSTED);
1231 RECORD(TYPE_OBJC_TYPE_PARAM);
1232 RECORD(LOCAL_REDECLARATIONS);
1233 RECORD(DECL_TYPEDEF);
1234 RECORD(DECL_TYPEALIAS);
1235 RECORD(DECL_ENUM);
1236 RECORD(DECL_RECORD);
1237 RECORD(DECL_ENUM_CONSTANT);
1238 RECORD(DECL_FUNCTION);
1239 RECORD(DECL_OBJC_METHOD);
1240 RECORD(DECL_OBJC_INTERFACE);
1241 RECORD(DECL_OBJC_PROTOCOL);
1242 RECORD(DECL_OBJC_IVAR);
1243 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1244 RECORD(DECL_OBJC_CATEGORY);
1245 RECORD(DECL_OBJC_CATEGORY_IMPL);
1246 RECORD(DECL_OBJC_IMPLEMENTATION);
1247 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1248 RECORD(DECL_OBJC_PROPERTY);
1249 RECORD(DECL_OBJC_PROPERTY_IMPL);
1250 RECORD(DECL_FIELD);
1251 RECORD(DECL_MS_PROPERTY);
1252 RECORD(DECL_VAR);
1253 RECORD(DECL_IMPLICIT_PARAM);
1254 RECORD(DECL_PARM_VAR);
1255 RECORD(DECL_FILE_SCOPE_ASM);
1256 RECORD(DECL_BLOCK);
1257 RECORD(DECL_CONTEXT_LEXICAL);
1258 RECORD(DECL_CONTEXT_VISIBLE);
1259 RECORD(DECL_NAMESPACE);
1260 RECORD(DECL_NAMESPACE_ALIAS);
1261 RECORD(DECL_USING);
1262 RECORD(DECL_USING_SHADOW);
1263 RECORD(DECL_USING_DIRECTIVE);
1264 RECORD(DECL_UNRESOLVED_USING_VALUE);
1265 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1266 RECORD(DECL_LINKAGE_SPEC);
1267 RECORD(DECL_CXX_RECORD);
1268 RECORD(DECL_CXX_METHOD);
1269 RECORD(DECL_CXX_CONSTRUCTOR);
1270 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1271 RECORD(DECL_CXX_DESTRUCTOR);
1272 RECORD(DECL_CXX_CONVERSION);
1273 RECORD(DECL_ACCESS_SPEC);
1274 RECORD(DECL_FRIEND);
1275 RECORD(DECL_FRIEND_TEMPLATE);
1276 RECORD(DECL_CLASS_TEMPLATE);
1277 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1278 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1279 RECORD(DECL_VAR_TEMPLATE);
1280 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1281 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1282 RECORD(DECL_FUNCTION_TEMPLATE);
1283 RECORD(DECL_TEMPLATE_TYPE_PARM);
1284 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1285 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1286 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1287 RECORD(DECL_STATIC_ASSERT);
1288 RECORD(DECL_CXX_BASE_SPECIFIERS);
1289 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1290 RECORD(DECL_INDIRECTFIELD);
1291 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1292 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1293 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1294 RECORD(DECL_IMPORT);
1295 RECORD(DECL_OMP_THREADPRIVATE);
1296 RECORD(DECL_EMPTY);
1297 RECORD(DECL_OBJC_TYPE_PARAM);
1298 RECORD(DECL_OMP_CAPTUREDEXPR);
1299 RECORD(DECL_PRAGMA_COMMENT);
1300 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1301 RECORD(DECL_OMP_DECLARE_REDUCTION);
1302
1303 // Statements and Exprs can occur in the Decls and Types block.
1304 AddStmtsExprs(Stream, Record);
1305
1306 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1307 RECORD(PPD_MACRO_EXPANSION);
1308 RECORD(PPD_MACRO_DEFINITION);
1309 RECORD(PPD_INCLUSION_DIRECTIVE);
1310
1311 // Decls and Types block.
1312 BLOCK(EXTENSION_BLOCK);
1313 RECORD(EXTENSION_METADATA);
1314
1315 BLOCK(UNHASHED_CONTROL_BLOCK);
1316 RECORD(SIGNATURE);
1317 RECORD(DIAGNOSTIC_OPTIONS);
1318 RECORD(DIAG_PRAGMA_MAPPINGS);
1319
1320#undef RECORD
1321#undef BLOCK
1322 Stream.ExitBlock();
1323}
1324
1325/// Prepares a path for being written to an AST file by converting it
1326/// to an absolute path and removing nested './'s.
1327///
1328/// \return \c true if the path was changed.
1329static bool cleanPathForOutput(FileManager &FileMgr,
1330 SmallVectorImpl<char> &Path) {
1331 bool Changed = FileMgr.makeAbsolutePath(Path);
1332 return Changed | llvm::sys::path::remove_dots(Path);
1333}
1334
1335/// Adjusts the given filename to only write out the portion of the
1336/// filename that is not part of the system root directory.
1337///
1338/// \param Filename the file name to adjust.
1339///
1340/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1341/// the returned filename will be adjusted by this root directory.
1342///
1343/// \returns either the original filename (if it needs no adjustment) or the
1344/// adjusted filename (which points into the @p Filename parameter).
1345static const char *
1346adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1347 assert(Filename && "No file name to adjust?")((Filename && "No file name to adjust?") ? static_cast
<void> (0) : __assert_fail ("Filename && \"No file name to adjust?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1347, __PRETTY_FUNCTION__))
;
1348
1349 if (BaseDir.empty())
1350 return Filename;
1351
1352 // Verify that the filename and the system root have the same prefix.
1353 unsigned Pos = 0;
1354 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1355 if (Filename[Pos] != BaseDir[Pos])
1356 return Filename; // Prefixes don't match.
1357
1358 // We hit the end of the filename before we hit the end of the system root.
1359 if (!Filename[Pos])
1360 return Filename;
1361
1362 // If there's not a path separator at the end of the base directory nor
1363 // immediately after it, then this isn't within the base directory.
1364 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1365 if (!llvm::sys::path::is_separator(BaseDir.back()))
1366 return Filename;
1367 } else {
1368 // If the file name has a '/' at the current position, skip over the '/'.
1369 // We distinguish relative paths from absolute paths by the
1370 // absence of '/' at the beginning of relative paths.
1371 //
1372 // FIXME: This is wrong. We distinguish them by asking if the path is
1373 // absolute, which isn't the same thing. And there might be multiple '/'s
1374 // in a row. Use a better mechanism to indicate whether we have emitted an
1375 // absolute or relative path.
1376 ++Pos;
1377 }
1378
1379 return Filename + Pos;
1380}
1381
1382ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1383 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1384 llvm::SHA1 Hasher;
1385 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1386 auto Hash = Hasher.result();
1387
1388 // Convert to an array [5*i32].
1389 ASTFileSignature Signature;
1390 auto LShift = [&](unsigned char Val, unsigned Shift) {
1391 return (uint32_t)Val << Shift;
1392 };
1393 for (int I = 0; I != 5; ++I)
1394 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1395 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1396
1397 return Signature;
1398}
1399
1400ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1401 ASTContext &Context) {
1402 // Flush first to prepare the PCM hash (signature).
1403 Stream.FlushToWord();
1404 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1405
1406 // Enter the block and prepare to write records.
1407 RecordData Record;
1408 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1409
1410 // For implicit modules, write the hash of the PCM as its signature.
1411 ASTFileSignature Signature;
1412 if (WritingModule &&
1413 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1414 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1415 Record.append(Signature.begin(), Signature.end());
1416 Stream.EmitRecord(SIGNATURE, Record);
1417 Record.clear();
1418 }
1419
1420 // Diagnostic options.
1421 const auto &Diags = Context.getDiagnostics();
1422 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1423#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1424#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1425 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1426#include "clang/Basic/DiagnosticOptions.def"
1427 Record.push_back(DiagOpts.Warnings.size());
1428 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1429 AddString(DiagOpts.Warnings[I], Record);
1430 Record.push_back(DiagOpts.Remarks.size());
1431 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1432 AddString(DiagOpts.Remarks[I], Record);
1433 // Note: we don't serialize the log or serialization file names, because they
1434 // are generally transient files and will almost always be overridden.
1435 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1436
1437 // Write out the diagnostic/pragma mappings.
1438 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1439
1440 // Leave the options block.
1441 Stream.ExitBlock();
1442 return Signature;
1443}
1444
1445/// Write the control block.
1446void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1447 StringRef isysroot,
1448 const std::string &OutputFile) {
1449 using namespace llvm;
1450
1451 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1452 RecordData Record;
1453
1454 // Metadata
1455 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1456 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1457 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1458 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1459 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1460 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1461 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1462 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1463 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PCHHasObjectFile
1464 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1465 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1466 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1467 assert((!WritingModule || isysroot.empty()) &&(((!WritingModule || isysroot.empty()) && "writing module as a relocatable PCH?"
) ? static_cast<void> (0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1468, __PRETTY_FUNCTION__))
1468 "writing module as a relocatable PCH?")(((!WritingModule || isysroot.empty()) && "writing module as a relocatable PCH?"
) ? static_cast<void> (0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1468, __PRETTY_FUNCTION__))
;
1469 {
1470 RecordData::value_type Record[] = {
1471 METADATA,
1472 VERSION_MAJOR,
1473 VERSION_MINOR,
1474 CLANG_VERSION_MAJOR8,
1475 CLANG_VERSION_MINOR0,
1476 !isysroot.empty(),
1477 IncludeTimestamps,
1478 Context.getLangOpts().BuildingPCHWithObjectFile,
1479 ASTHasCompilerErrors};
1480 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1481 getClangFullRepositoryVersion());
1482 }
1483
1484 if (WritingModule) {
1485 // Module name
1486 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1487 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1488 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1489 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1490 RecordData::value_type Record[] = {MODULE_NAME};
1491 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1492 }
1493
1494 if (WritingModule && WritingModule->Directory) {
1495 SmallString<128> BaseDir(WritingModule->Directory->getName());
1496 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1497
1498 // If the home of the module is the current working directory, then we
1499 // want to pick up the cwd of the build process loading the module, not
1500 // our cwd, when we load this module.
1501 if (!PP.getHeaderSearchInfo()
1502 .getHeaderSearchOpts()
1503 .ModuleMapFileHomeIsCwd ||
1504 WritingModule->Directory->getName() != StringRef(".")) {
1505 // Module directory.
1506 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1507 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1508 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1509 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1510
1511 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1512 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1513 }
1514
1515 // Write out all other paths relative to the base directory if possible.
1516 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1517 } else if (!isysroot.empty()) {
1518 // Write out paths relative to the sysroot if possible.
1519 BaseDirectory = isysroot;
1520 }
1521
1522 // Module map file
1523 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1524 Record.clear();
1525
1526 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1527 AddPath(WritingModule->PresumedModuleMapFile.empty()
1528 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1529 : StringRef(WritingModule->PresumedModuleMapFile),
1530 Record);
1531
1532 // Additional module map files.
1533 if (auto *AdditionalModMaps =
1534 Map.getAdditionalModuleMapFiles(WritingModule)) {
1535 Record.push_back(AdditionalModMaps->size());
1536 for (const FileEntry *F : *AdditionalModMaps)
1537 AddPath(F->getName(), Record);
1538 } else {
1539 Record.push_back(0);
1540 }
1541
1542 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1543 }
1544
1545 // Imports
1546 if (Chain) {
1547 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1548 Record.clear();
1549
1550 for (ModuleFile &M : Mgr) {
1551 // Skip modules that weren't directly imported.
1552 if (!M.isDirectlyImported())
1553 continue;
1554
1555 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1556 AddSourceLocation(M.ImportLoc, Record);
1557
1558 // If we have calculated signature, there is no need to store
1559 // the size or timestamp.
1560 Record.push_back(M.Signature ? 0 : M.File->getSize());
1561 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1562
1563 for (auto I : M.Signature)
1564 Record.push_back(I);
1565
1566 AddString(M.ModuleName, Record);
1567 AddPath(M.FileName, Record);
1568 }
1569 Stream.EmitRecord(IMPORTS, Record);
1570 }
1571
1572 // Write the options block.
1573 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1574
1575 // Language options.
1576 Record.clear();
1577 const LangOptions &LangOpts = Context.getLangOpts();
1578#define LANGOPT(Name, Bits, Default, Description) \
1579 Record.push_back(LangOpts.Name);
1580#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1581 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1582#include "clang/Basic/LangOptions.def"
1583#define SANITIZER(NAME, ID) \
1584 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1585#include "clang/Basic/Sanitizers.def"
1586
1587 Record.push_back(LangOpts.ModuleFeatures.size());
1588 for (StringRef Feature : LangOpts.ModuleFeatures)
1589 AddString(Feature, Record);
1590
1591 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1592 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1593
1594 AddString(LangOpts.CurrentModule, Record);
1595
1596 // Comment options.
1597 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1598 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1599 AddString(I, Record);
1600 }
1601 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1602
1603 // OpenMP offloading options.
1604 Record.push_back(LangOpts.OMPTargetTriples.size());
1605 for (auto &T : LangOpts.OMPTargetTriples)
1606 AddString(T.getTriple(), Record);
1607
1608 AddString(LangOpts.OMPHostIRFile, Record);
1609
1610 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1611
1612 // Target options.
1613 Record.clear();
1614 const TargetInfo &Target = Context.getTargetInfo();
1615 const TargetOptions &TargetOpts = Target.getTargetOpts();
1616 AddString(TargetOpts.Triple, Record);
1617 AddString(TargetOpts.CPU, Record);
1618 AddString(TargetOpts.ABI, Record);
1619 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1620 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1621 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1622 }
1623 Record.push_back(TargetOpts.Features.size());
1624 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1625 AddString(TargetOpts.Features[I], Record);
1626 }
1627 Stream.EmitRecord(TARGET_OPTIONS, Record);
1628
1629 // File system options.
1630 Record.clear();
1631 const FileSystemOptions &FSOpts =
1632 Context.getSourceManager().getFileManager().getFileSystemOpts();
1633 AddString(FSOpts.WorkingDir, Record);
1634 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1635
1636 // Header search options.
1637 Record.clear();
1638 const HeaderSearchOptions &HSOpts
1639 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1640 AddString(HSOpts.Sysroot, Record);
1641
1642 // Include entries.
1643 Record.push_back(HSOpts.UserEntries.size());
1644 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1645 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1646 AddString(Entry.Path, Record);
1647 Record.push_back(static_cast<unsigned>(Entry.Group));
1648 Record.push_back(Entry.IsFramework);
1649 Record.push_back(Entry.IgnoreSysRoot);
1650 }
1651
1652 // System header prefixes.
1653 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1654 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1655 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1656 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1657 }
1658
1659 AddString(HSOpts.ResourceDir, Record);
1660 AddString(HSOpts.ModuleCachePath, Record);
1661 AddString(HSOpts.ModuleUserBuildPath, Record);
1662 Record.push_back(HSOpts.DisableModuleHash);
1663 Record.push_back(HSOpts.ImplicitModuleMaps);
1664 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1665 Record.push_back(HSOpts.UseBuiltinIncludes);
1666 Record.push_back(HSOpts.UseStandardSystemIncludes);
1667 Record.push_back(HSOpts.UseStandardCXXIncludes);
1668 Record.push_back(HSOpts.UseLibcxx);
1669 // Write out the specific module cache path that contains the module files.
1670 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1671 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1672
1673 // Preprocessor options.
1674 Record.clear();
1675 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1676
1677 // Macro definitions.
1678 Record.push_back(PPOpts.Macros.size());
1679 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1680 AddString(PPOpts.Macros[I].first, Record);
1681 Record.push_back(PPOpts.Macros[I].second);
1682 }
1683
1684 // Includes
1685 Record.push_back(PPOpts.Includes.size());
1686 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1687 AddString(PPOpts.Includes[I], Record);
1688
1689 // Macro includes
1690 Record.push_back(PPOpts.MacroIncludes.size());
1691 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1692 AddString(PPOpts.MacroIncludes[I], Record);
1693
1694 Record.push_back(PPOpts.UsePredefines);
1695 // Detailed record is important since it is used for the module cache hash.
1696 Record.push_back(PPOpts.DetailedRecord);
1697 AddString(PPOpts.ImplicitPCHInclude, Record);
1698 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1699 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1700
1701 // Leave the options block.
1702 Stream.ExitBlock();
1703
1704 // Original file name and file ID
1705 SourceManager &SM = Context.getSourceManager();
1706 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1707 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1708 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1709 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1710 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1711 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1712
1713 Record.clear();
1714 Record.push_back(ORIGINAL_FILE);
1715 Record.push_back(SM.getMainFileID().getOpaqueValue());
1716 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1717 }
1718
1719 Record.clear();
1720 Record.push_back(SM.getMainFileID().getOpaqueValue());
1721 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1722
1723 // Original PCH directory
1724 if (!OutputFile.empty() && OutputFile != "-") {
1725 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1726 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1727 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1728 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1729
1730 SmallString<128> OutputPath(OutputFile);
1731
1732 SM.getFileManager().makeAbsolutePath(OutputPath);
1733 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1734
1735 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1736 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1737 }
1738
1739 WriteInputFiles(Context.SourceMgr,
1740 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1741 PP.getLangOpts().Modules);
1742 Stream.ExitBlock();
1743}
1744
1745namespace {
1746
1747/// An input file.
1748struct InputFileEntry {
1749 const FileEntry *File;
1750 bool IsSystemFile;
1751 bool IsTransient;
1752 bool BufferOverridden;
1753 bool IsTopLevelModuleMap;
1754};
1755
1756} // namespace
1757
1758void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1759 HeaderSearchOptions &HSOpts,
1760 bool Modules) {
1761 using namespace llvm;
1762
1763 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1764
1765 // Create input-file abbreviation.
1766 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1767 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1768 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1769 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1770 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1771 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1772 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1773 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1774 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1775 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1776
1777 // Get all ContentCache objects for files, sorted by whether the file is a
1778 // system one or not. System files go at the back, users files at the front.
1779 std::deque<InputFileEntry> SortedFiles;
1780 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1781 // Get this source location entry.
1782 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1783 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc)((&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc) ? static_cast
<void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1783, __PRETTY_FUNCTION__))
;
1784
1785 // We only care about file entries that were not overridden.
1786 if (!SLoc->isFile())
1787 continue;
1788 const SrcMgr::FileInfo &File = SLoc->getFile();
1789 const SrcMgr::ContentCache *Cache = File.getContentCache();
1790 if (!Cache->OrigEntry)
1791 continue;
1792
1793 InputFileEntry Entry;
1794 Entry.File = Cache->OrigEntry;
1795 Entry.IsSystemFile = Cache->IsSystemFile;
1796 Entry.IsTransient = Cache->IsTransient;
1797 Entry.BufferOverridden = Cache->BufferOverridden;
1798 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1799 File.getIncludeLoc().isInvalid();
1800 if (Cache->IsSystemFile)
1801 SortedFiles.push_back(Entry);
1802 else
1803 SortedFiles.push_front(Entry);
1804 }
1805
1806 unsigned UserFilesNum = 0;
1807 // Write out all of the input files.
1808 std::vector<uint64_t> InputFileOffsets;
1809 for (const auto &Entry : SortedFiles) {
1810 uint32_t &InputFileID = InputFileIDs[Entry.File];
1811 if (InputFileID != 0)
1812 continue; // already recorded this file.
1813
1814 // Record this entry's offset.
1815 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1816
1817 InputFileID = InputFileOffsets.size();
1818
1819 if (!Entry.IsSystemFile)
1820 ++UserFilesNum;
1821
1822 // Emit size/modification time for this file.
1823 // And whether this file was overridden.
1824 RecordData::value_type Record[] = {
1825 INPUT_FILE,
1826 InputFileOffsets.size(),
1827 (uint64_t)Entry.File->getSize(),
1828 (uint64_t)getTimestampForOutput(Entry.File),
1829 Entry.BufferOverridden,
1830 Entry.IsTransient,
1831 Entry.IsTopLevelModuleMap};
1832
1833 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1834 }
1835
1836 Stream.ExitBlock();
1837
1838 // Create input file offsets abbreviation.
1839 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1840 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1841 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1842 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1843 // input files
1844 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1845 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1846
1847 // Write input file offsets.
1848 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1849 InputFileOffsets.size(), UserFilesNum};
1850 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1851}
1852
1853//===----------------------------------------------------------------------===//
1854// Source Manager Serialization
1855//===----------------------------------------------------------------------===//
1856
1857/// Create an abbreviation for the SLocEntry that refers to a
1858/// file.
1859static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1860 using namespace llvm;
1861
1862 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1863 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1864 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1865 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1866 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1867 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1868 // FileEntry fields.
1869 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1870 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1871 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1873 return Stream.EmitAbbrev(std::move(Abbrev));
1874}
1875
1876/// Create an abbreviation for the SLocEntry that refers to a
1877/// buffer.
1878static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1879 using namespace llvm;
1880
1881 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1882 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1883 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1884 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1885 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1886 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1887 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1888 return Stream.EmitAbbrev(std::move(Abbrev));
1889}
1890
1891/// Create an abbreviation for the SLocEntry that refers to a
1892/// buffer's blob.
1893static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1894 bool Compressed) {
1895 using namespace llvm;
1896
1897 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1898 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1899 : SM_SLOC_BUFFER_BLOB));
1900 if (Compressed)
1901 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1902 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1903 return Stream.EmitAbbrev(std::move(Abbrev));
1904}
1905
1906/// Create an abbreviation for the SLocEntry that refers to a macro
1907/// expansion.
1908static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1909 using namespace llvm;
1910
1911 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1912 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1913 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1914 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1915 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1916 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1917 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1918 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1919 return Stream.EmitAbbrev(std::move(Abbrev));
1920}
1921
1922namespace {
1923
1924 // Trait used for the on-disk hash table of header search information.
1925 class HeaderFileInfoTrait {
1926 ASTWriter &Writer;
1927
1928 // Keep track of the framework names we've used during serialization.
1929 SmallVector<char, 128> FrameworkStringData;
1930 llvm::StringMap<unsigned> FrameworkNameOffset;
1931
1932 public:
1933 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1934
1935 struct key_type {
1936 StringRef Filename;
1937 off_t Size;
1938 time_t ModTime;
1939 };
1940 using key_type_ref = const key_type &;
1941
1942 using UnresolvedModule =
1943 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1944
1945 struct data_type {
1946 const HeaderFileInfo &HFI;
1947 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1948 UnresolvedModule Unresolved;
1949 };
1950 using data_type_ref = const data_type &;
1951
1952 using hash_value_type = unsigned;
1953 using offset_type = unsigned;
1954
1955 hash_value_type ComputeHash(key_type_ref key) {
1956 // The hash is based only on size/time of the file, so that the reader can
1957 // match even when symlinking or excess path elements ("foo/../", "../")
1958 // change the form of the name. However, complete path is still the key.
1959 return llvm::hash_combine(key.Size, key.ModTime);
1960 }
1961
1962 std::pair<unsigned, unsigned>
1963 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1964 using namespace llvm::support;
1965
1966 endian::Writer LE(Out, little);
1967 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1968 LE.write<uint16_t>(KeyLen);
1969 unsigned DataLen = 1 + 2 + 4 + 4;
1970 for (auto ModInfo : Data.KnownHeaders)
1971 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1972 DataLen += 4;
1973 if (Data.Unresolved.getPointer())
1974 DataLen += 4;
1975 LE.write<uint8_t>(DataLen);
1976 return std::make_pair(KeyLen, DataLen);
1977 }
1978
1979 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1980 using namespace llvm::support;
1981
1982 endian::Writer LE(Out, little);
1983 LE.write<uint64_t>(key.Size);
1984 KeyLen -= 8;
1985 LE.write<uint64_t>(key.ModTime);
1986 KeyLen -= 8;
1987 Out.write(key.Filename.data(), KeyLen);
1988 }
1989
1990 void EmitData(raw_ostream &Out, key_type_ref key,
1991 data_type_ref Data, unsigned DataLen) {
1992 using namespace llvm::support;
1993
1994 endian::Writer LE(Out, little);
1995 uint64_t Start = Out.tell(); (void)Start;
1996
1997 unsigned char Flags = (Data.HFI.isImport << 5)
1998 | (Data.HFI.isPragmaOnce << 4)
1999 | (Data.HFI.DirInfo << 1)
2000 | Data.HFI.IndexHeaderMapHeader;
2001 LE.write<uint8_t>(Flags);
2002 LE.write<uint16_t>(Data.HFI.NumIncludes);
2003
2004 if (!Data.HFI.ControllingMacro)
2005 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
2006 else
2007 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
2008
2009 unsigned Offset = 0;
2010 if (!Data.HFI.Framework.empty()) {
2011 // If this header refers into a framework, save the framework name.
2012 llvm::StringMap<unsigned>::iterator Pos
2013 = FrameworkNameOffset.find(Data.HFI.Framework);
2014 if (Pos == FrameworkNameOffset.end()) {
2015 Offset = FrameworkStringData.size() + 1;
2016 FrameworkStringData.append(Data.HFI.Framework.begin(),
2017 Data.HFI.Framework.end());
2018 FrameworkStringData.push_back(0);
2019
2020 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2021 } else
2022 Offset = Pos->second;
2023 }
2024 LE.write<uint32_t>(Offset);
2025
2026 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2027 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2028 uint32_t Value = (ModID << 2) | (unsigned)Role;
2029 assert((Value >> 2) == ModID && "overflow in header module info")(((Value >> 2) == ModID && "overflow in header module info"
) ? static_cast<void> (0) : __assert_fail ("(Value >> 2) == ModID && \"overflow in header module info\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2029, __PRETTY_FUNCTION__))
;
2030 LE.write<uint32_t>(Value);
2031 }
2032 };
2033
2034 // FIXME: If the header is excluded, we should write out some
2035 // record of that fact.
2036 for (auto ModInfo : Data.KnownHeaders)
2037 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2038 if (Data.Unresolved.getPointer())
2039 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2040
2041 assert(Out.tell() - Start == DataLen && "Wrong data length")((Out.tell() - Start == DataLen && "Wrong data length"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Wrong data length\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2041, __PRETTY_FUNCTION__))
;
2042 }
2043
2044 const char *strings_begin() const { return FrameworkStringData.begin(); }
2045 const char *strings_end() const { return FrameworkStringData.end(); }
2046 };
2047
2048} // namespace
2049
2050/// Write the header search block for the list of files that
2051///
2052/// \param HS The header search structure to save.
2053void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2054 HeaderFileInfoTrait GeneratorTrait(*this);
2055 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2056 SmallVector<const char *, 4> SavedStrings;
2057 unsigned NumHeaderSearchEntries = 0;
2058
2059 // Find all unresolved headers for the current module. We generally will
2060 // have resolved them before we get here, but not necessarily: we might be
2061 // compiling a preprocessed module, where there is no requirement for the
2062 // original files to exist any more.
2063 const HeaderFileInfo Empty; // So we can take a reference.
2064 if (WritingModule) {
1
Assuming the condition is true
2
Taking true branch
2065 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2066 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
2067 Module *M = Worklist.pop_back_val();
2068 if (!M->isAvailable())
4
Assuming the condition is false
5
Taking false branch
2069 continue;
2070
2071 // Map to disk files where possible, to pick up any missing stat
2072 // information. This also means we don't need to check the unresolved
2073 // headers list when emitting resolved headers in the first loop below.
2074 // FIXME: It'd be preferable to avoid doing this if we were given
2075 // sufficient stat information in the module map.
2076 HS.getModuleMap().resolveHeaderDirectives(M);
2077
2078 // If the file didn't exist, we can still create a module if we were given
2079 // enough information in the module map.
2080 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
2081 // Check that we were given enough information to build a module
2082 // without this file existing on disk.
2083 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Taking false branch
2084 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2085 << WritingModule->getFullModuleName() << U.Size.hasValue()
2086 << U.FileName;
2087 continue;
2088 }
2089
2090 // Form the effective relative pathname for the file.
2091 SmallString<128> Filename(M->Directory->getName());
2092 llvm::sys::path::append(Filename, U.FileName);
2093 PreparePathForOutput(Filename);
2094
2095 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
2096 SavedStrings.push_back(FilenameDup.data());
2097
2098 HeaderFileInfoTrait::key_type Key = {
2099 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2100 };
2101 HeaderFileInfoTrait::data_type Data = {
2102 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2103 };
2104 // FIXME: Deal with cases where there are multiple unresolved header
2105 // directives in different submodules for the same header.
2106 Generator.insert(Key, Data, GeneratorTrait);
2107 ++NumHeaderSearchEntries;
2108 }
2109
2110 Worklist.append(M->submodule_begin(), M->submodule_end());
2111 }
2112 }
2113
2114 SmallVector<const FileEntry *, 16> FilesByUID;
2115 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2116
2117 if (FilesByUID.size() > HS.header_file_size())
2118 FilesByUID.resize(HS.header_file_size());
2119
2120 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2121 const FileEntry *File = FilesByUID[UID];
2122 if (!File)
2123 continue;
2124
2125 // Get the file info. This will load info from the external source if
2126 // necessary. Skip emitting this file if we have no information on it
2127 // as a header file (in which case HFI will be null) or if it hasn't
2128 // changed since it was loaded. Also skip it if it's for a modular header
2129 // from a different module; in that case, we rely on the module(s)
2130 // containing the header to provide this information.
2131 const HeaderFileInfo *HFI =
2132 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2133 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2134 continue;
2135
2136 // Massage the file path into an appropriate form.
2137 StringRef Filename = File->getName();
2138 SmallString<128> FilenameTmp(Filename);
2139 if (PreparePathForOutput(FilenameTmp)) {
2140 // If we performed any translation on the file name at all, we need to
2141 // save this string, since the generator will refer to it later.
2142 Filename = StringRef(strdup(FilenameTmp.c_str()));
2143 SavedStrings.push_back(Filename.data());
2144 }
2145
2146 HeaderFileInfoTrait::key_type Key = {
2147 Filename, File->getSize(), getTimestampForOutput(File)
2148 };
2149 HeaderFileInfoTrait::data_type Data = {
2150 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2151 };
2152 Generator.insert(Key, Data, GeneratorTrait);
2153 ++NumHeaderSearchEntries;
2154 }
2155
2156 // Create the on-disk hash table in a buffer.
2157 SmallString<4096> TableData;
2158 uint32_t BucketOffset;
2159 {
2160 using namespace llvm::support;
2161
2162 llvm::raw_svector_ostream Out(TableData);
2163 // Make sure that no bucket is at offset 0
2164 endian::write<uint32_t>(Out, 0, little);
2165 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2166 }
2167
2168 // Create a blob abbreviation
2169 using namespace llvm;
2170
2171 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2172 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2173 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2174 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2175 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2176 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2177 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2178
2179 // Write the header search table
2180 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2181 NumHeaderSearchEntries, TableData.size()};
2182 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2183 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2184
2185 // Free all of the strings we had to duplicate.
2186 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2187 free(const_cast<char *>(SavedStrings[I]));
2188}
2189
2190static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2191 unsigned SLocBufferBlobCompressedAbbrv,
2192 unsigned SLocBufferBlobAbbrv) {
2193 using RecordDataType = ASTWriter::RecordData::value_type;
2194
2195 // Compress the buffer if possible. We expect that almost all PCM
2196 // consumers will not want its contents.
2197 SmallString<0> CompressedBuffer;
2198 if (llvm::zlib::isAvailable()) {
2199 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2200 if (!E) {
2201 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2202 Blob.size() - 1};
2203 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2204 CompressedBuffer);
2205 return;
2206 }
2207 llvm::consumeError(std::move(E));
2208 }
2209
2210 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2211 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2212}
2213
2214/// Writes the block containing the serialized form of the
2215/// source manager.
2216///
2217/// TODO: We should probably use an on-disk hash table (stored in a
2218/// blob), indexed based on the file name, so that we only create
2219/// entries for files that we actually need. In the common case (no
2220/// errors), we probably won't have to create file entries for any of
2221/// the files in the AST.
2222void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2223 const Preprocessor &PP) {
2224 RecordData Record;
2225
2226 // Enter the source manager block.
2227 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2228
2229 // Abbreviations for the various kinds of source-location entries.
2230 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2231 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2232 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2233 unsigned SLocBufferBlobCompressedAbbrv =
2234 CreateSLocBufferBlobAbbrev(Stream, true);
2235 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2236
2237 // Write out the source location entry table. We skip the first
2238 // entry, which is always the same dummy entry.
2239 std::vector<uint32_t> SLocEntryOffsets;
2240 RecordData PreloadSLocs;
2241 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2242 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2243 I != N; ++I) {
2244 // Get this source location entry.
2245 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2246 FileID FID = FileID::get(I);
2247 assert(&SourceMgr.getSLocEntry(FID) == SLoc)((&SourceMgr.getSLocEntry(FID) == SLoc) ? static_cast<
void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2247, __PRETTY_FUNCTION__))
;
2248
2249 // Record the offset of this source-location entry.
2250 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2251
2252 // Figure out which record code to use.
2253 unsigned Code;
2254 if (SLoc->isFile()) {
2255 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2256 if (Cache->OrigEntry) {
2257 Code = SM_SLOC_FILE_ENTRY;
2258 } else
2259 Code = SM_SLOC_BUFFER_ENTRY;
2260 } else
2261 Code = SM_SLOC_EXPANSION_ENTRY;
2262 Record.clear();
2263 Record.push_back(Code);
2264
2265 // Starting offset of this entry within this module, so skip the dummy.
2266 Record.push_back(SLoc->getOffset() - 2);
2267 if (SLoc->isFile()) {
2268 const SrcMgr::FileInfo &File = SLoc->getFile();
2269 AddSourceLocation(File.getIncludeLoc(), Record);
2270 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2271 Record.push_back(File.hasLineDirectives());
2272
2273 const SrcMgr::ContentCache *Content = File.getContentCache();
2274 bool EmitBlob = false;
2275 if (Content->OrigEntry) {
2276 assert(Content->OrigEntry == Content->ContentsEntry &&((Content->OrigEntry == Content->ContentsEntry &&
"Writing to AST an overridden file is not supported") ? static_cast
<void> (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2277, __PRETTY_FUNCTION__))
2277 "Writing to AST an overridden file is not supported")((Content->OrigEntry == Content->ContentsEntry &&
"Writing to AST an overridden file is not supported") ? static_cast
<void> (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2277, __PRETTY_FUNCTION__))
;
2278
2279 // The source location entry is a file. Emit input file ID.
2280 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry")((InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry"
) ? static_cast<void> (0) : __assert_fail ("InputFileIDs[Content->OrigEntry] != 0 && \"Missed file entry\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2280, __PRETTY_FUNCTION__))
;
2281 Record.push_back(InputFileIDs[Content->OrigEntry]);
2282
2283 Record.push_back(File.NumCreatedFIDs);
2284
2285 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2286 if (FDI != FileDeclIDs.end()) {
2287 Record.push_back(FDI->second->FirstDeclIndex);
2288 Record.push_back(FDI->second->DeclIDs.size());
2289 } else {
2290 Record.push_back(0);
2291 Record.push_back(0);
2292 }
2293
2294 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2295
2296 if (Content->BufferOverridden || Content->IsTransient)
2297 EmitBlob = true;
2298 } else {
2299 // The source location entry is a buffer. The blob associated
2300 // with this entry contains the contents of the buffer.
2301
2302 // We add one to the size so that we capture the trailing NULL
2303 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2304 // the reader side).
2305 const llvm::MemoryBuffer *Buffer
2306 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2307 StringRef Name = Buffer->getBufferIdentifier();
2308 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2309 StringRef(Name.data(), Name.size() + 1));
2310 EmitBlob = true;
2311
2312 if (Name == "<built-in>")
2313 PreloadSLocs.push_back(SLocEntryOffsets.size());
2314 }
2315
2316 if (EmitBlob) {
2317 // Include the implicit terminating null character in the on-disk buffer
2318 // if we're writing it uncompressed.
2319 const llvm::MemoryBuffer *Buffer =
2320 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2321 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2322 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2323 SLocBufferBlobAbbrv);
2324 }
2325 } else {
2326 // The source location entry is a macro expansion.
2327 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2328 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2329 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2330 AddSourceLocation(Expansion.isMacroArgExpansion()
2331 ? SourceLocation()
2332 : Expansion.getExpansionLocEnd(),
2333 Record);
2334 Record.push_back(Expansion.isExpansionTokenRange());
2335
2336 // Compute the token length for this macro expansion.
2337 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2338 if (I + 1 != N)
2339 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2340 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2341 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2342 }
2343 }
2344
2345 Stream.ExitBlock();
2346
2347 if (SLocEntryOffsets.empty())
2348 return;
2349
2350 // Write the source-location offsets table into the AST block. This
2351 // table is used for lazily loading source-location information.
2352 using namespace llvm;
2353
2354 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2355 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2356 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2357 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2358 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2359 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2360 {
2361 RecordData::value_type Record[] = {
2362 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2363 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2364 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2365 bytes(SLocEntryOffsets));
2366 }
2367 // Write the source location entry preloads array, telling the AST
2368 // reader which source locations entries it should load eagerly.
2369 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2370
2371 // Write the line table. It depends on remapping working, so it must come
2372 // after the source location offsets.
2373 if (SourceMgr.hasLineTable()) {
2374 LineTableInfo &LineTable = SourceMgr.getLineTable();
2375
2376 Record.clear();
2377
2378 // Emit the needed file names.
2379 llvm::DenseMap<int, int> FilenameMap;
2380 FilenameMap[-1] = -1; // For unspecified filenames.
2381 for (const auto &L : LineTable) {
2382 if (L.first.ID < 0)
2383 continue;
2384 for (auto &LE : L.second) {
2385 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2386 FilenameMap.size() - 1)).second)
2387 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2388 }
2389 }
2390 Record.push_back(0);
2391
2392 // Emit the line entries
2393 for (const auto &L : LineTable) {
2394 // Only emit entries for local files.
2395 if (L.first.ID < 0)
2396 continue;
2397
2398 // Emit the file ID
2399 Record.push_back(L.first.ID);
2400
2401 // Emit the line entries
2402 Record.push_back(L.second.size());
2403 for (const auto &LE : L.second) {
2404 Record.push_back(LE.FileOffset);
2405 Record.push_back(LE.LineNo);
2406 Record.push_back(FilenameMap[LE.FilenameID]);
2407 Record.push_back((unsigned)LE.FileKind);
2408 Record.push_back(LE.IncludeOffset);
2409 }
2410 }
2411
2412 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2413 }
2414}
2415
2416//===----------------------------------------------------------------------===//
2417// Preprocessor Serialization
2418//===----------------------------------------------------------------------===//
2419
2420static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2421 const Preprocessor &PP) {
2422 if (MacroInfo *MI = MD->getMacroInfo())
2423 if (MI->isBuiltinMacro())
2424 return true;
2425
2426 if (IsModule) {
2427 SourceLocation Loc = MD->getLocation();
2428 if (Loc.isInvalid())
2429 return true;
2430 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2431 return true;
2432 }
2433
2434 return false;
2435}
2436
2437/// Writes the block containing the serialized form of the
2438/// preprocessor.
2439void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2440 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2441 if (PPRec)
2442 WritePreprocessorDetail(*PPRec);
2443
2444 RecordData Record;
2445 RecordData ModuleMacroRecord;
2446
2447 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2448 if (PP.getCounterValue() != 0) {
2449 RecordData::value_type Record[] = {PP.getCounterValue()};
2450 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2451 }
2452
2453 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2454 assert(!IsModule)((!IsModule) ? static_cast<void> (0) : __assert_fail ("!IsModule"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2454, __PRETTY_FUNCTION__))
;
2455 auto SkipInfo = PP.getPreambleSkipInfo();
2456 if (SkipInfo.hasValue()) {
2457 Record.push_back(true);
2458 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2459 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2460 Record.push_back(SkipInfo->FoundNonSkipPortion);
2461 Record.push_back(SkipInfo->FoundElse);
2462 AddSourceLocation(SkipInfo->ElseLoc, Record);
2463 } else {
2464 Record.push_back(false);
2465 }
2466 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2467 AddSourceLocation(Cond.IfLoc, Record);
2468 Record.push_back(Cond.WasSkipping);
2469 Record.push_back(Cond.FoundNonSkip);
2470 Record.push_back(Cond.FoundElse);
2471 }
2472 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2473 Record.clear();
2474 }
2475
2476 // Enter the preprocessor block.
2477 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2478
2479 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2480 // FIXME: Include a location for the use, and say which one was used.
2481 if (PP.SawDateOrTime())
2482 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2483
2484 // Loop over all the macro directives that are live at the end of the file,
2485 // emitting each to the PP section.
2486
2487 // Construct the list of identifiers with macro directives that need to be
2488 // serialized.
2489 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2490 for (auto &Id : PP.getIdentifierTable())
2491 if (Id.second->hadMacroDefinition() &&
2492 (!Id.second->isFromAST() ||
2493 Id.second->hasChangedSinceDeserialization()))
2494 MacroIdentifiers.push_back(Id.second);
2495 // Sort the set of macro definitions that need to be serialized by the
2496 // name of the macro, to provide a stable ordering.
2497 llvm::sort(MacroIdentifiers, llvm::less_ptr<IdentifierInfo>());
2498
2499 // Emit the macro directives as a list and associate the offset with the
2500 // identifier they belong to.
2501 for (const IdentifierInfo *Name : MacroIdentifiers) {
2502 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2503 auto StartOffset = Stream.GetCurrentBitNo();
2504
2505 // Emit the macro directives in reverse source order.
2506 for (; MD; MD = MD->getPrevious()) {
2507 // Once we hit an ignored macro, we're done: the rest of the chain
2508 // will all be ignored macros.
2509 if (shouldIgnoreMacro(MD, IsModule, PP))
2510 break;
2511
2512 AddSourceLocation(MD->getLocation(), Record);
2513 Record.push_back(MD->getKind());
2514 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2515 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2516 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2517 Record.push_back(VisMD->isPublic());
2518 }
2519 }
2520
2521 // Write out any exported module macros.
2522 bool EmittedModuleMacros = false;
2523 // We write out exported module macros for PCH as well.
2524 auto Leafs = PP.getLeafModuleMacros(Name);
2525 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2526 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2527 while (!Worklist.empty()) {
2528 auto *Macro = Worklist.pop_back_val();
2529
2530 // Emit a record indicating this submodule exports this macro.
2531 ModuleMacroRecord.push_back(
2532 getSubmoduleID(Macro->getOwningModule()));
2533 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2534 for (auto *M : Macro->overrides())
2535 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2536
2537 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2538 ModuleMacroRecord.clear();
2539
2540 // Enqueue overridden macros once we've visited all their ancestors.
2541 for (auto *M : Macro->overrides())
2542 if (++Visits[M] == M->getNumOverridingMacros())
2543 Worklist.push_back(M);
2544
2545 EmittedModuleMacros = true;
2546 }
2547
2548 if (Record.empty() && !EmittedModuleMacros)
2549 continue;
2550
2551 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2552 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2553 Record.clear();
2554 }
2555
2556 /// Offsets of each of the macros into the bitstream, indexed by
2557 /// the local macro ID
2558 ///
2559 /// For each identifier that is associated with a macro, this map
2560 /// provides the offset into the bitstream where that macro is
2561 /// defined.
2562 std::vector<uint32_t> MacroOffsets;
2563
2564 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2565 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2566 MacroInfo *MI = MacroInfosToEmit[I].MI;
2567 MacroID ID = MacroInfosToEmit[I].ID;
2568
2569 if (ID < FirstMacroID) {
2570 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")((0 && "Loaded MacroInfo entered MacroInfosToEmit ?")
? static_cast<void> (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2570, __PRETTY_FUNCTION__))
;
2571 continue;
2572 }
2573
2574 // Record the local offset of this macro.
2575 unsigned Index = ID - FirstMacroID;
2576 if (Index == MacroOffsets.size())
2577 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2578 else {
2579 if (Index > MacroOffsets.size())
2580 MacroOffsets.resize(Index + 1);
2581
2582 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2583 }
2584
2585 AddIdentifierRef(Name, Record);
2586 AddSourceLocation(MI->getDefinitionLoc(), Record);
2587 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2588 Record.push_back(MI->isUsed());
2589 Record.push_back(MI->isUsedForHeaderGuard());
2590 unsigned Code;
2591 if (MI->isObjectLike()) {
2592 Code = PP_MACRO_OBJECT_LIKE;
2593 } else {
2594 Code = PP_MACRO_FUNCTION_LIKE;
2595
2596 Record.push_back(MI->isC99Varargs());
2597 Record.push_back(MI->isGNUVarargs());
2598 Record.push_back(MI->hasCommaPasting());
2599 Record.push_back(MI->getNumParams());
2600 for (const IdentifierInfo *Param : MI->params())
2601 AddIdentifierRef(Param, Record);
2602 }
2603
2604 // If we have a detailed preprocessing record, record the macro definition
2605 // ID that corresponds to this macro.
2606 if (PPRec)
2607 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2608
2609 Stream.EmitRecord(Code, Record);
2610 Record.clear();
2611
2612 // Emit the tokens array.
2613 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2614 // Note that we know that the preprocessor does not have any annotation
2615 // tokens in it because they are created by the parser, and thus can't
2616 // be in a macro definition.
2617 const Token &Tok = MI->getReplacementToken(TokNo);
2618 AddToken(Tok, Record);
2619 Stream.EmitRecord(PP_TOKEN, Record);
2620 Record.clear();
2621 }
2622 ++NumMacros;
2623 }
2624
2625 Stream.ExitBlock();
2626
2627 // Write the offsets table for macro IDs.
2628 using namespace llvm;
2629
2630 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2631 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2632 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2633 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2634 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2635
2636 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2637 {
2638 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2639 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2640 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2641 }
2642}
2643
2644void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2645 if (PPRec.local_begin() == PPRec.local_end())
2646 return;
2647
2648 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2649
2650 // Enter the preprocessor block.
2651 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2652
2653 // If the preprocessor has a preprocessing record, emit it.
2654 unsigned NumPreprocessingRecords = 0;
2655 using namespace llvm;
2656
2657 // Set up the abbreviation for
2658 unsigned InclusionAbbrev = 0;
2659 {
2660 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2661 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2662 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2663 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2664 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2665 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2667 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2668 }
2669
2670 unsigned FirstPreprocessorEntityID
2671 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2672 + NUM_PREDEF_PP_ENTITY_IDS;
2673 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2674 RecordData Record;
2675 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2676 EEnd = PPRec.local_end();
2677 E != EEnd;
2678 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2679 Record.clear();
2680
2681 PreprocessedEntityOffsets.push_back(
2682 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2683
2684 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2685 // Record this macro definition's ID.
2686 MacroDefinitions[MD] = NextPreprocessorEntityID;
2687
2688 AddIdentifierRef(MD->getName(), Record);
2689 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2690 continue;
2691 }
2692
2693 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2694 Record.push_back(ME->isBuiltinMacro());
2695 if (ME->isBuiltinMacro())
2696 AddIdentifierRef(ME->getName(), Record);
2697 else
2698 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2699 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2700 continue;
2701 }
2702
2703 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2704 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2705 Record.push_back(ID->getFileName().size());
2706 Record.push_back(ID->wasInQuotes());
2707 Record.push_back(static_cast<unsigned>(ID->getKind()));
2708 Record.push_back(ID->importedModule());
2709 SmallString<64> Buffer;
2710 Buffer += ID->getFileName();
2711 // Check that the FileEntry is not null because it was not resolved and
2712 // we create a PCH even with compiler errors.
2713 if (ID->getFile())
2714 Buffer += ID->getFile()->getName();
2715 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2716 continue;
2717 }
2718
2719 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2719)
;
2720 }
2721 Stream.ExitBlock();
2722
2723 // Write the offsets table for the preprocessing record.
2724 if (NumPreprocessingRecords > 0) {
2725 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)((PreprocessedEntityOffsets.size() == NumPreprocessingRecords
) ? static_cast<void> (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2725, __PRETTY_FUNCTION__))
;
2726
2727 // Write the offsets table for identifier IDs.
2728 using namespace llvm;
2729
2730 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2731 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2732 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2733 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2734 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2735
2736 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2737 FirstPreprocessorEntityID -
2738 NUM_PREDEF_PP_ENTITY_IDS};
2739 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2740 bytes(PreprocessedEntityOffsets));
2741 }
2742
2743 // Write the skipped region table for the preprocessing record.
2744 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2745 if (SkippedRanges.size() > 0) {
2746 std::vector<PPSkippedRange> SerializedSkippedRanges;
2747 SerializedSkippedRanges.reserve(SkippedRanges.size());
2748 for (auto const& Range : SkippedRanges)
2749 SerializedSkippedRanges.emplace_back(Range);
2750
2751 using namespace llvm;
2752 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2753 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2754 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2755 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2756
2757 Record.clear();
2758 Record.push_back(PPD_SKIPPED_RANGES);
2759 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2760 bytes(SerializedSkippedRanges));
2761 }
2762}
2763
2764unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2765 if (!Mod)
2766 return 0;
2767
2768 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2769 if (Known != SubmoduleIDs.end())
2770 return Known->second;
2771
2772 auto *Top = Mod->getTopLevelModule();
2773 if (Top != WritingModule &&
2774 (getLangOpts().CompilingPCH ||
2775 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2776 return 0;
2777
2778 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2779}
2780
2781unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2782 // FIXME: This can easily happen, if we have a reference to a submodule that
2783 // did not result in us loading a module file for that submodule. For
2784 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2785 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2786 assert((ID || !Mod) &&(((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? static_cast<void> (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2787, __PRETTY_FUNCTION__))
2787 "asked for module ID for non-local, non-imported module")(((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? static_cast<void> (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2787, __PRETTY_FUNCTION__))
;
2788 return ID;
2789}
2790
2791/// Compute the number of modules within the given tree (including the
2792/// given module).
2793static unsigned getNumberOfModules(Module *Mod) {
2794 unsigned ChildModules = 0;
2795 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2796 Sub != SubEnd; ++Sub)
2797 ChildModules += getNumberOfModules(*Sub);
2798
2799 return ChildModules + 1;
2800}
2801
2802void ASTWriter::WriteSubmodules(Module *WritingModule) {
2803 // Enter the submodule description block.
2804 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2805
2806 // Write the abbreviations needed for the submodules block.
2807 using namespace llvm;
2808
2809 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2810 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2811 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2812 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2813 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2814 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2815 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2816 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2817 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2818 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2819 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2820 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2821 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2822 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2823 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2824 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2825
2826 Abbrev = std::make_shared<BitCodeAbbrev>();
2827 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2828 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2829 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2830
2831 Abbrev = std::make_shared<BitCodeAbbrev>();
2832 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2833 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2834 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2835
2836 Abbrev = std::make_shared<BitCodeAbbrev>();
2837 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2838 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2839 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2840
2841 Abbrev = std::make_shared<BitCodeAbbrev>();
2842 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2843 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2844 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2845
2846 Abbrev = std::make_shared<BitCodeAbbrev>();
2847 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2848 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2849 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2850 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2851
2852 Abbrev = std::make_shared<BitCodeAbbrev>();
2853 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2854 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2855 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2856
2857 Abbrev = std::make_shared<BitCodeAbbrev>();
2858 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2859 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2860 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2861
2862 Abbrev = std::make_shared<BitCodeAbbrev>();
2863 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2864 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2865 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2866
2867 Abbrev = std::make_shared<BitCodeAbbrev>();
2868 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2869 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2870 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2871
2872 Abbrev = std::make_shared<BitCodeAbbrev>();
2873 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2876 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2877
2878 Abbrev = std::make_shared<BitCodeAbbrev>();
2879 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2880 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2881 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2882
2883 Abbrev = std::make_shared<BitCodeAbbrev>();
2884 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2885 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2886 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2887 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2888
2889 Abbrev = std::make_shared<BitCodeAbbrev>();
2890 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2891 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2892 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2893
2894 // Write the submodule metadata block.
2895 RecordData::value_type Record[] = {
2896 getNumberOfModules(WritingModule),
2897 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2898 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2899
2900 // Write all of the submodules.
2901 std::queue<Module *> Q;
2902 Q.push(WritingModule);
2903 while (!Q.empty()) {
2904 Module *Mod = Q.front();
2905 Q.pop();
2906 unsigned ID = getSubmoduleID(Mod);
2907
2908 uint64_t ParentID = 0;
2909 if (Mod->Parent) {
2910 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?")((SubmoduleIDs[Mod->Parent] && "Submodule parent not written?"
) ? static_cast<void> (0) : __assert_fail ("SubmoduleIDs[Mod->Parent] && \"Submodule parent not written?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2910, __PRETTY_FUNCTION__))
;
2911 ParentID = SubmoduleIDs[Mod->Parent];
2912 }
2913
2914 // Emit the definition of the block.
2915 {
2916 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2917 ID,
2918 ParentID,
2919 (RecordData::value_type)Mod->Kind,
2920 Mod->IsFramework,
2921 Mod->IsExplicit,
2922 Mod->IsSystem,
2923 Mod->IsExternC,
2924 Mod->InferSubmodules,
2925 Mod->InferExplicitSubmodules,
2926 Mod->InferExportWildcard,
2927 Mod->ConfigMacrosExhaustive,
2928 Mod->ModuleMapIsPrivate};
2929 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2930 }
2931
2932 // Emit the requirements.
2933 for (const auto &R : Mod->Requirements) {
2934 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2935 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2936 }
2937
2938 // Emit the umbrella header, if there is one.
2939 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2940 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2941 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2942 UmbrellaHeader.NameAsWritten);
2943 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2944 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2945 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2946 UmbrellaDir.NameAsWritten);
2947 }
2948
2949 // Emit the headers.
2950 struct {
2951 unsigned RecordKind;
2952 unsigned Abbrev;
2953 Module::HeaderKind HeaderKind;
2954 } HeaderLists[] = {
2955 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2956 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2957 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2958 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2959 Module::HK_PrivateTextual},
2960 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2961 };
2962 for (auto &HL : HeaderLists) {
2963 RecordData::value_type Record[] = {HL.RecordKind};
2964 for (auto &H : Mod->Headers[HL.HeaderKind])
2965 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2966 }
2967
2968 // Emit the top headers.
2969 {
2970 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2971 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2972 for (auto *H : TopHeaders)
2973 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2974 }
2975
2976 // Emit the imports.
2977 if (!Mod->Imports.empty()) {
2978 RecordData Record;
2979 for (auto *I : Mod->Imports)
2980 Record.push_back(getSubmoduleID(I));
2981 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2982 }
2983
2984 // Emit the exports.
2985 if (!Mod->Exports.empty()) {
2986 RecordData Record;
2987 for (const auto &E : Mod->Exports) {
2988 // FIXME: This may fail; we don't require that all exported modules
2989 // are local or imported.
2990 Record.push_back(getSubmoduleID(E.getPointer()));
2991 Record.push_back(E.getInt());
2992 }
2993 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2994 }
2995
2996 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2997 // Might be unnecessary as use declarations are only used to build the
2998 // module itself.
2999
3000 // Emit the link libraries.
3001 for (const auto &LL : Mod->LinkLibraries) {
3002 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
3003 LL.IsFramework};
3004 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
3005 }
3006
3007 // Emit the conflicts.
3008 for (const auto &C : Mod->Conflicts) {
3009 // FIXME: This may fail; we don't require that all conflicting modules
3010 // are local or imported.
3011 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3012 getSubmoduleID(C.Other)};
3013 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3014 }
3015
3016 // Emit the configuration macros.
3017 for (const auto &CM : Mod->ConfigMacros) {
3018 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3019 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3020 }
3021
3022 // Emit the initializers, if any.
3023 RecordData Inits;
3024 for (Decl *D : Context->getModuleInitializers(Mod))
3025 Inits.push_back(GetDeclRef(D));
3026 if (!Inits.empty())
3027 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3028
3029 // Emit the name of the re-exported module, if any.
3030 if (!Mod->ExportAsModule.empty()) {
3031 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3032 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3033 }
3034
3035 // Queue up the submodules of this module.
3036 for (auto *M : Mod->submodules())
3037 Q.push(M);
3038 }
3039
3040 Stream.ExitBlock();
3041
3042 assert((NextSubmoduleID - FirstSubmoduleID ==(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3045, __PRETTY_FUNCTION__))
3043 getNumberOfModules(WritingModule)) &&(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3045, __PRETTY_FUNCTION__))
3044 "Wrong # of submodules; found a reference to a non-local, "(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3045, __PRETTY_FUNCTION__))
3045 "non-imported submodule?")(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3045, __PRETTY_FUNCTION__))
;
3046}
3047
3048void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3049 bool isModule) {
3050 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3051 DiagStateIDMap;
3052 unsigned CurrID = 0;
3053 RecordData Record;
3054
3055 auto EncodeDiagStateFlags =
3056 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3057 unsigned Result = (unsigned)DS->ExtBehavior;
3058 for (unsigned Val :
3059 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3060 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3061 (unsigned)DS->SuppressSystemWarnings})
3062 Result = (Result << 1) | Val;
3063 return Result;
3064 };
3065
3066 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3067 Record.push_back(Flags);
3068
3069 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3070 bool IncludeNonPragmaStates) {
3071 // Ensure that the diagnostic state wasn't modified since it was created.
3072 // We will not correctly round-trip this information otherwise.
3073 assert(Flags == EncodeDiagStateFlags(State) &&((Flags == EncodeDiagStateFlags(State) && "diag state flags vary in single AST file"
) ? static_cast<void> (0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3074, __PRETTY_FUNCTION__))
3074 "diag state flags vary in single AST file")((Flags == EncodeDiagStateFlags(State) && "diag state flags vary in single AST file"
) ? static_cast<void> (0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3074, __PRETTY_FUNCTION__))
;
3075
3076 unsigned &DiagStateID = DiagStateIDMap[State];
3077 Record.push_back(DiagStateID);
3078
3079 if (DiagStateID == 0) {
3080 DiagStateID = ++CurrID;
3081
3082 // Add a placeholder for the number of mappings.
3083 auto SizeIdx = Record.size();
3084 Record.emplace_back();
3085 for (const auto &I : *State) {
3086 if (I.second.isPragma() || IncludeNonPragmaStates) {
3087 Record.push_back(I.first);
3088 Record.push_back(I.second.serialize());
3089 }
3090 }
3091 // Update the placeholder.
3092 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3093 }
3094 };
3095
3096 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3097
3098 // Reserve a spot for the number of locations with state transitions.
3099 auto NumLocationsIdx = Record.size();
3100 Record.emplace_back();
3101
3102 // Emit the state transitions.
3103 unsigned NumLocations = 0;
3104 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3105 if (!FileIDAndFile.first.isValid() ||
3106 !FileIDAndFile.second.HasLocalTransitions)
3107 continue;
3108 ++NumLocations;
3109
3110 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3111 assert(!Loc.isInvalid() && "start loc for valid FileID is invalid")((!Loc.isInvalid() && "start loc for valid FileID is invalid"
) ? static_cast<void> (0) : __assert_fail ("!Loc.isInvalid() && \"start loc for valid FileID is invalid\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3111, __PRETTY_FUNCTION__))
;
3112 AddSourceLocation(Loc, Record);
3113
3114 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3115 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3116 Record.push_back(StatePoint.Offset);
3117 AddDiagState(StatePoint.State, false);
3118 }
3119 }
3120
3121 // Backpatch the number of locations.
3122 Record[NumLocationsIdx] = NumLocations;
3123
3124 // Emit CurDiagStateLoc. Do it last in order to match source order.
3125 //
3126 // This also protects against a hypothetical corner case with simulating
3127 // -Werror settings for implicit modules in the ASTReader, where reading
3128 // CurDiagState out of context could change whether warning pragmas are
3129 // treated as errors.
3130 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3131 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3132
3133 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3134}
3135
3136//===----------------------------------------------------------------------===//
3137// Type Serialization
3138//===----------------------------------------------------------------------===//
3139
3140/// Write the representation of a type to the AST stream.
3141void ASTWriter::WriteType(QualType T) {
3142 TypeIdx &IdxRef = TypeIdxs[T];
3143 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3144 IdxRef = TypeIdx(NextTypeID++);
3145 TypeIdx Idx = IdxRef;
3146
3147 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST")((Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST"
) ? static_cast<void> (0) : __assert_fail ("Idx.getIndex() >= FirstTypeID && \"Re-writing a type from a prior AST\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3147, __PRETTY_FUNCTION__))
;
3148
3149 RecordData Record;
3150
3151 // Emit the type's representation.
3152 ASTTypeWriter W(*this, Record);
3153 W.Visit(T);
3154 uint64_t Offset = W.Emit();
3155
3156 // Record the offset for this type.
3157 unsigned Index = Idx.getIndex() - FirstTypeID;
3158 if (TypeOffsets.size() == Index)
3159 TypeOffsets.push_back(Offset);
3160 else if (TypeOffsets.size() < Index) {
3161 TypeOffsets.resize(Index + 1);
3162 TypeOffsets[Index] = Offset;
3163 } else {
3164 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3164)
;
3165 }
3166}
3167
3168//===----------------------------------------------------------------------===//
3169// Declaration Serialization
3170//===----------------------------------------------------------------------===//
3171
3172/// Write the block containing all of the declaration IDs
3173/// lexically declared within the given DeclContext.
3174///
3175/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3176/// bitstream, or 0 if no block was written.
3177uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3178 DeclContext *DC) {
3179 if (DC->decls_empty())
3180 return 0;
3181
3182 uint64_t Offset = Stream.GetCurrentBitNo();
3183 SmallVector<uint32_t, 128> KindDeclPairs;
3184 for (const auto *D : DC->decls()) {
3185 KindDeclPairs.push_back(D->getKind());
3186 KindDeclPairs.push_back(GetDeclRef(D));
3187 }
3188
3189 ++NumLexicalDeclContexts;
3190 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3191 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3192 bytes(KindDeclPairs));
3193 return Offset;
3194}
3195
3196void ASTWriter::WriteTypeDeclOffsets() {
3197 using namespace llvm;
3198
3199 // Write the type offsets array
3200 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3201 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3202 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3204 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3205 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3206 {
3207 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3208 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3209 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3210 }
3211
3212 // Write the declaration offsets array
3213 Abbrev = std::make_shared<BitCodeAbbrev>();
3214 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3215 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3217 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3218 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3219 {
3220 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3221 FirstDeclID - NUM_PREDEF_DECL_IDS};
3222 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3223 }
3224}
3225
3226void ASTWriter::WriteFileDeclIDsMap() {
3227 using namespace llvm;
3228
3229 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3230 FileDeclIDs.begin(), FileDeclIDs.end());
3231 llvm::sort(SortedFileDeclIDs, llvm::less_first());
3232
3233 // Join the vectors of DeclIDs from all files.
3234 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3235 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3236 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3237 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3238 for (auto &LocDeclEntry : Info.DeclIDs)
3239 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3240 }
3241
3242 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3243 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3244 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3245 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3246 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3247 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3248 FileGroupedDeclIDs.size()};
3249 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3250}
3251
3252void ASTWriter::WriteComments() {
3253 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3254 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3255 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3256 return;
3257 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3258 RecordData Record;
3259 for (const auto *I : RawComments) {
3260 Record.clear();
3261 AddSourceRange(I->getSourceRange(), Record);
3262 Record.push_back(I->getKind());
3263 Record.push_back(I->isTrailingComment());
3264 Record.push_back(I->isAlmostTrailingComment());
3265 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3266 }
3267}
3268
3269//===----------------------------------------------------------------------===//
3270// Global Method Pool and Selector Serialization
3271//===----------------------------------------------------------------------===//
3272
3273namespace {
3274
3275// Trait used for the on-disk hash table used in the method pool.
3276class ASTMethodPoolTrait {
3277 ASTWriter &Writer;
3278
3279public:
3280 using key_type = Selector;
3281 using key_type_ref = key_type;
3282
3283 struct data_type {
3284 SelectorID ID;
3285 ObjCMethodList Instance, Factory;
3286 };
3287 using data_type_ref = const data_type &;
3288
3289 using hash_value_type = unsigned;
3290 using offset_type = unsigned;
3291
3292 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3293
3294 static hash_value_type ComputeHash(Selector Sel) {
3295 return serialization::ComputeHash(Sel);
3296 }
3297
3298 std::pair<unsigned, unsigned>
3299 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3300 data_type_ref Methods) {
3301 using namespace llvm::support;
3302
3303 endian::Writer LE(Out, little);
3304 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3305 LE.write<uint16_t>(KeyLen);
3306 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3307 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3308 Method = Method->getNext())
3309 if (Method->getMethod())
3310 DataLen += 4;
3311 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3312 Method = Method->getNext())
3313 if (Method->getMethod())
3314 DataLen += 4;
3315 LE.write<uint16_t>(DataLen);
3316 return std::make_pair(KeyLen, DataLen);
3317 }
3318
3319 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3320 using namespace llvm::support;
3321
3322 endian::Writer LE(Out, little);
3323 uint64_t Start = Out.tell();
3324 assert((Start >> 32) == 0 && "Selector key offset too large")(((Start >> 32) == 0 && "Selector key offset too large"
) ? static_cast<void> (0) : __assert_fail ("(Start >> 32) == 0 && \"Selector key offset too large\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3324, __PRETTY_FUNCTION__))
;
3325 Writer.SetSelectorOffset(Sel, Start);
3326 unsigned N = Sel.getNumArgs();
3327 LE.write<uint16_t>(N);
3328 if (N == 0)
3329 N = 1;
3330 for (unsigned I = 0; I != N; ++I)
3331 LE.write<uint32_t>(
3332 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3333 }
3334
3335 void EmitData(raw_ostream& Out, key_type_ref,
3336 data_type_ref Methods, unsigned DataLen) {
3337 using namespace llvm::support;
3338
3339 endian::Writer LE(Out, little);
3340 uint64_t Start = Out.tell(); (void)Start;
3341 LE.write<uint32_t>(Methods.ID);
3342 unsigned NumInstanceMethods = 0;
3343 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3344 Method = Method->getNext())
3345 if (Method->getMethod())
3346 ++NumInstanceMethods;
3347
3348 unsigned NumFactoryMethods = 0;
3349 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3350 Method = Method->getNext())
3351 if (Method->getMethod())
3352 ++NumFactoryMethods;
3353
3354 unsigned InstanceBits = Methods.Instance.getBits();
3355 assert(InstanceBits < 4)((InstanceBits < 4) ? static_cast<void> (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3355, __PRETTY_FUNCTION__))
;
3356 unsigned InstanceHasMoreThanOneDeclBit =
3357 Methods.Instance.hasMoreThanOneDecl();
3358 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3359 (InstanceHasMoreThanOneDeclBit << 2) |
3360 InstanceBits;
3361 unsigned FactoryBits = Methods.Factory.getBits();
3362 assert(FactoryBits < 4)((FactoryBits < 4) ? static_cast<void> (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3362, __PRETTY_FUNCTION__))
;
3363 unsigned FactoryHasMoreThanOneDeclBit =
3364 Methods.Factory.hasMoreThanOneDecl();
3365 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3366 (FactoryHasMoreThanOneDeclBit << 2) |
3367 FactoryBits;
3368 LE.write<uint16_t>(FullInstanceBits);
3369 LE.write<uint16_t>(FullFactoryBits);
3370 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3371 Method = Method->getNext())
3372 if (Method->getMethod())
3373 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3374 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3375 Method = Method->getNext())
3376 if (Method->getMethod())
3377 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3378
3379 assert(Out.tell() - Start == DataLen && "Data length is wrong")((Out.tell() - Start == DataLen && "Data length is wrong"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3379, __PRETTY_FUNCTION__))
;
3380 }
3381};
3382
3383} // namespace
3384
3385/// Write ObjC data: selectors and the method pool.
3386///
3387/// The method pool contains both instance and factory methods, stored
3388/// in an on-disk hash table indexed by the selector. The hash table also
3389/// contains an empty entry for every other selector known to Sema.
3390void ASTWriter::WriteSelectors(Sema &SemaRef) {
3391 using namespace llvm;
3392
3393 // Do we have to do anything at all?
3394 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3395 return;
3396 unsigned NumTableEntries = 0;
3397 // Create and write out the blob that contains selectors and the method pool.
3398 {
3399 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3400 ASTMethodPoolTrait Trait(*this);
3401
3402 // Create the on-disk hash table representation. We walk through every
3403 // selector we've seen and look it up in the method pool.
3404 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3405 for (auto &SelectorAndID : SelectorIDs) {
3406 Selector S = SelectorAndID.first;
3407 SelectorID ID = SelectorAndID.second;
3408 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3409 ASTMethodPoolTrait::data_type Data = {
3410 ID,
3411 ObjCMethodList(),
3412 ObjCMethodList()
3413 };
3414 if (F != SemaRef.MethodPool.end()) {
3415 Data.Instance = F->second.first;
3416 Data.Factory = F->second.second;
3417 }
3418 // Only write this selector if it's not in an existing AST or something
3419 // changed.
3420 if (Chain && ID < FirstSelectorID) {
3421 // Selector already exists. Did it change?
3422 bool changed = false;
3423 for (ObjCMethodList *M = &Data.Instance;
3424 !changed && M && M->getMethod(); M = M->getNext()) {
3425 if (!M->getMethod()->isFromASTFile())
3426 changed = true;
3427 }
3428 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3429 M = M->getNext()) {
3430 if (!M->getMethod()->isFromASTFile())
3431 changed = true;
3432 }
3433 if (!changed)
3434 continue;
3435 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3436 // A new method pool entry.
3437 ++NumTableEntries;
3438 }
3439 Generator.insert(S, Data, Trait);
3440 }
3441
3442 // Create the on-disk hash table in a buffer.
3443 SmallString<4096> MethodPool;
3444 uint32_t BucketOffset;
3445 {
3446 using namespace llvm::support;
3447
3448 ASTMethodPoolTrait Trait(*this);
3449 llvm::raw_svector_ostream Out(MethodPool);
3450 // Make sure that no bucket is at offset 0
3451 endian::write<uint32_t>(Out, 0, little);
3452 BucketOffset = Generator.Emit(Out, Trait);
3453 }
3454
3455 // Create a blob abbreviation
3456 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3457 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3458 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3459 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3460 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3461 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3462
3463 // Write the method pool
3464 {
3465 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3466 NumTableEntries};
3467 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3468 }
3469
3470 // Create a blob abbreviation for the selector table offsets.
3471 Abbrev = std::make_shared<BitCodeAbbrev>();
3472 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3473 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3474 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3476 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3477
3478 // Write the selector offsets table.
3479 {
3480 RecordData::value_type Record[] = {
3481 SELECTOR_OFFSETS, SelectorOffsets.size(),
3482 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3483 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3484 bytes(SelectorOffsets));
3485 }
3486 }
3487}
3488
3489/// Write the selectors referenced in @selector expression into AST file.
3490void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3491 using namespace llvm;
3492
3493 if (SemaRef.ReferencedSelectors.empty())
3494 return;
3495
3496 RecordData Record;
3497 ASTRecordWriter Writer(*this, Record);
3498
3499 // Note: this writes out all references even for a dependent AST. But it is
3500 // very tricky to fix, and given that @selector shouldn't really appear in
3501 // headers, probably not worth it. It's not a correctness issue.
3502 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3503 Selector Sel = SelectorAndLocation.first;
3504 SourceLocation Loc = SelectorAndLocation.second;
3505 Writer.AddSelectorRef(Sel);
3506 Writer.AddSourceLocation(Loc);
3507 }
3508 Writer.Emit(REFERENCED_SELECTOR_POOL);
3509}
3510
3511//===----------------------------------------------------------------------===//
3512// Identifier Table Serialization
3513//===----------------------------------------------------------------------===//
3514
3515/// Determine the declaration that should be put into the name lookup table to
3516/// represent the given declaration in this module. This is usually D itself,
3517/// but if D was imported and merged into a local declaration, we want the most
3518/// recent local declaration instead. The chosen declaration will be the most
3519/// recent declaration in any module that imports this one.
3520static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3521 NamedDecl *D) {
3522 if (!LangOpts.Modules || !D->isFromASTFile())
3523 return D;
3524
3525 if (Decl *Redecl = D->getPreviousDecl()) {
3526 // For Redeclarable decls, a prior declaration might be local.
3527 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3528 // If we find a local decl, we're done.
3529 if (!Redecl->isFromASTFile()) {
3530 // Exception: in very rare cases (for injected-class-names), not all
3531 // redeclarations are in the same semantic context. Skip ones in a
3532 // different context. They don't go in this lookup table at all.
3533 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3534 D->getDeclContext()->getRedeclContext()))
3535 continue;
3536 return cast<NamedDecl>(Redecl);
3537 }
3538
3539 // If we find a decl from a (chained-)PCH stop since we won't find a
3540 // local one.
3541 if (Redecl->getOwningModuleID() == 0)
3542 break;
3543 }
3544 } else if (Decl *First = D->getCanonicalDecl()) {
3545 // For Mergeable decls, the first decl might be local.
3546 if (!First->isFromASTFile())
3547 return cast<NamedDecl>(First);
3548 }
3549
3550 // All declarations are imported. Our most recent declaration will also be
3551 // the most recent one in anyone who imports us.
3552 return D;
3553}
3554
3555namespace {
3556
3557class ASTIdentifierTableTrait {
3558 ASTWriter &Writer;
3559 Preprocessor &PP;
3560 IdentifierResolver &IdResolver;
3561 bool IsModule;
3562 bool NeedDecls;
3563 ASTWriter::RecordData *InterestingIdentifierOffsets;
3564
3565 /// Determines whether this is an "interesting" identifier that needs a
3566 /// full IdentifierInfo structure written into the hash table. Notably, this
3567 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3568 /// to check that.
3569 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3570 if (MacroOffset ||
3571 II->isPoisoned() ||
3572 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3573 II->hasRevertedTokenIDToIdentifier() ||
3574 (NeedDecls && II->getFETokenInfo()))
3575 return true;
3576
3577 return false;
3578 }
3579
3580public:
3581 using key_type = IdentifierInfo *;
3582 using key_type_ref = key_type;
3583
3584 using data_type = IdentID;
3585 using data_type_ref = data_type;
3586
3587 using hash_value_type = unsigned;
3588 using offset_type = unsigned;
3589
3590 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3591 IdentifierResolver &IdResolver, bool IsModule,
3592 ASTWriter::RecordData *InterestingIdentifierOffsets)
3593 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3594 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3595 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3596
3597 bool needDecls() const { return NeedDecls; }
3598
3599 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3600 return llvm::djbHash(II->getName());
3601 }
3602
3603 bool isInterestingIdentifier(const IdentifierInfo *II) {
3604 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3605 return isInterestingIdentifier(II, MacroOffset);
3606 }
3607
3608 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3609 return isInterestingIdentifier(II, 0);
3610 }
3611
3612 std::pair<unsigned, unsigned>
3613 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3614 unsigned KeyLen = II->getLength() + 1;
3615 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3616 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3617 if (isInterestingIdentifier(II, MacroOffset)) {
3618 DataLen += 2; // 2 bytes for builtin ID
3619 DataLen += 2; // 2 bytes for flags
3620 if (MacroOffset)
3621 DataLen += 4; // MacroDirectives offset.
3622
3623 if (NeedDecls) {
3624 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3625 DEnd = IdResolver.end();
3626 D != DEnd; ++D)
3627 DataLen += 4;
3628 }
3629 }
3630
3631 using namespace llvm::support;
3632
3633 endian::Writer LE(Out, little);
3634
3635 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen)(((uint16_t)DataLen == DataLen && (uint16_t)KeyLen ==
KeyLen) ? static_cast<void> (0) : __assert_fail ("(uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3635, __PRETTY_FUNCTION__))
;
3636 LE.write<uint16_t>(DataLen);
3637 // We emit the key length after the data length so that every
3638 // string is preceded by a 16-bit length. This matches the PTH
3639 // format for storing identifiers.
3640 LE.write<uint16_t>(KeyLen);
3641 return std::make_pair(KeyLen, DataLen);
3642 }
3643
3644 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3645 unsigned KeyLen) {
3646 // Record the location of the key data. This is used when generating
3647 // the mapping from persistent IDs to strings.
3648 Writer.SetIdentifierOffset(II, Out.tell());
3649
3650 // Emit the offset of the key/data length information to the interesting
3651 // identifiers table if necessary.
3652 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3653 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3654
3655 Out.write(II->getNameStart(), KeyLen);
3656 }
3657
3658 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3659 IdentID ID, unsigned) {
3660 using namespace llvm::support;
3661
3662 endian::Writer LE(Out, little);
3663
3664 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3665 if (!isInterestingIdentifier(II, MacroOffset)) {
3666 LE.write<uint32_t>(ID << 1);
3667 return;
3668 }
3669
3670 LE.write<uint32_t>((ID << 1) | 0x01);
3671 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3672 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.")(((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader."
) ? static_cast<void> (0) : __assert_fail ("(Bits & 0xffff) == Bits && \"ObjCOrBuiltinID too big for ASTReader.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3672, __PRETTY_FUNCTION__))
;
3673 LE.write<uint16_t>(Bits);
3674 Bits = 0;
3675 bool HadMacroDefinition = MacroOffset != 0;
3676 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3677 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3678 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3679 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3680 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3681 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3682 LE.write<uint16_t>(Bits);
3683
3684 if (HadMacroDefinition)
3685 LE.write<uint32_t>(MacroOffset);
3686
3687 if (NeedDecls) {
3688 // Emit the declaration IDs in reverse order, because the
3689 // IdentifierResolver provides the declarations as they would be
3690 // visible (e.g., the function "stat" would come before the struct
3691 // "stat"), but the ASTReader adds declarations to the end of the list
3692 // (so we need to see the struct "stat" before the function "stat").
3693 // Only emit declarations that aren't from a chained PCH, though.
3694 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3695 IdResolver.end());
3696 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3697 DEnd = Decls.rend();
3698 D != DEnd; ++D)
3699 LE.write<uint32_t>(
3700 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3701 }
3702 }
3703};
3704
3705} // namespace
3706
3707/// Write the identifier table into the AST file.
3708///
3709/// The identifier table consists of a blob containing string data
3710/// (the actual identifiers themselves) and a separate "offsets" index
3711/// that maps identifier IDs to locations within the blob.
3712void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3713 IdentifierResolver &IdResolver,
3714 bool IsModule) {
3715 using namespace llvm;
3716
3717 RecordData InterestingIdents;
3718
3719 // Create and write out the blob that contains the identifier
3720 // strings.
3721 {
3722 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3723 ASTIdentifierTableTrait Trait(
3724 *this, PP, IdResolver, IsModule,
3725 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3726
3727 // Look for any identifiers that were named while processing the
3728 // headers, but are otherwise not needed. We add these to the hash
3729 // table to enable checking of the predefines buffer in the case
3730 // where the user adds new macro definitions when building the AST
3731 // file.
3732 SmallVector<const IdentifierInfo *, 128> IIs;
3733 for (const auto &ID : PP.getIdentifierTable())
3734 IIs.push_back(ID.second);
3735 // Sort the identifiers lexicographically before getting them references so
3736 // that their order is stable.
3737 llvm::sort(IIs, llvm::less_ptr<IdentifierInfo>());
3738 for (const IdentifierInfo *II : IIs)
3739 if (Trait.isInterestingNonMacroIdentifier(II))
3740 getIdentifierRef(II);
3741
3742 // Create the on-disk hash table representation. We only store offsets
3743 // for identifiers that appear here for the first time.
3744 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3745 for (auto IdentIDPair : IdentifierIDs) {
3746 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3747 IdentID ID = IdentIDPair.second;
3748 assert(II && "NULL identifier in identifier table")((II && "NULL identifier in identifier table") ? static_cast
<void> (0) : __assert_fail ("II && \"NULL identifier in identifier table\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3748, __PRETTY_FUNCTION__))
;
3749 // Write out identifiers if either the ID is local or the identifier has
3750 // changed since it was loaded.
3751 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3752 || II->hasChangedSinceDeserialization() ||
3753 (Trait.needDecls() &&
3754 II->hasFETokenInfoChangedSinceDeserialization()))
3755 Generator.insert(II, ID, Trait);
3756 }
3757
3758 // Create the on-disk hash table in a buffer.
3759 SmallString<4096> IdentifierTable;
3760 uint32_t BucketOffset;
3761 {
3762 using namespace llvm::support;
3763
3764 llvm::raw_svector_ostream Out(IdentifierTable);
3765 // Make sure that no bucket is at offset 0
3766 endian::write<uint32_t>(Out, 0, little);
3767 BucketOffset = Generator.Emit(Out, Trait);
3768 }
3769
3770 // Create a blob abbreviation
3771 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3772 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3773 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3774 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3775 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3776
3777 // Write the identifier table
3778 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3779 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3780 }
3781
3782 // Write the offsets table for identifier IDs.
3783 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3784 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3785 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3786 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3787 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3788 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3789
3790#ifndef NDEBUG
3791 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3792 assert(IdentifierOffsets[I] && "Missing identifier offset?")((IdentifierOffsets[I] && "Missing identifier offset?"
) ? static_cast<void> (0) : __assert_fail ("IdentifierOffsets[I] && \"Missing identifier offset?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3792, __PRETTY_FUNCTION__))
;
3793#endif
3794
3795 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3796 IdentifierOffsets.size(),
3797 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3798 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3799 bytes(IdentifierOffsets));
3800
3801 // In C++, write the list of interesting identifiers (those that are
3802 // defined as macros, poisoned, or similar unusual things).
3803 if (!InterestingIdents.empty())
3804 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3805}
3806
3807//===----------------------------------------------------------------------===//
3808// DeclContext's Name Lookup Table Serialization
3809//===----------------------------------------------------------------------===//
3810
3811namespace {
3812
3813// Trait used for the on-disk hash table used in the method pool.
3814class ASTDeclContextNameLookupTrait {
3815 ASTWriter &Writer;
3816 llvm::SmallVector<DeclID, 64> DeclIDs;
3817
3818public:
3819 using key_type = DeclarationNameKey;
3820 using key_type_ref = key_type;
3821
3822 /// A start and end index into DeclIDs, representing a sequence of decls.
3823 using data_type = std::pair<unsigned, unsigned>;
3824 using data_type_ref = const data_type &;
3825
3826 using hash_value_type = unsigned;
3827 using offset_type = unsigned;
3828
3829 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3830
3831 template<typename Coll>
3832 data_type getData(const Coll &Decls) {
3833 unsigned Start = DeclIDs.size();
3834 for (NamedDecl *D : Decls) {
3835 DeclIDs.push_back(
3836 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3837 }
3838 return std::make_pair(Start, DeclIDs.size());
3839 }
3840
3841 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3842 unsigned Start = DeclIDs.size();
3843 for (auto ID : FromReader)
3844 DeclIDs.push_back(ID);
3845 return std::make_pair(Start, DeclIDs.size());
3846 }
3847
3848 static bool EqualKey(key_type_ref a, key_type_ref b) {
3849 return a == b;
3850 }
3851
3852 hash_value_type ComputeHash(DeclarationNameKey Name) {
3853 return Name.getHash();
3854 }
3855
3856 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3857 assert(Writer.hasChain() &&((Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? static_cast<void> (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3858, __PRETTY_FUNCTION__))
3858 "have reference to loaded module file but no chain?")((Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? static_cast<void> (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3858, __PRETTY_FUNCTION__))
;
3859
3860 using namespace llvm::support;
3861
3862 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3863 }
3864
3865 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3866 DeclarationNameKey Name,
3867 data_type_ref Lookup) {
3868 using namespace llvm::support;
3869
3870 endian::Writer LE(Out, little);
3871 unsigned KeyLen = 1;
3872 switch (Name.getKind()) {
3873 case DeclarationName::Identifier:
3874 case DeclarationName::ObjCZeroArgSelector:
3875 case DeclarationName::ObjCOneArgSelector:
3876 case DeclarationName::ObjCMultiArgSelector:
3877 case DeclarationName::CXXLiteralOperatorName:
3878 case DeclarationName::CXXDeductionGuideName:
3879 KeyLen += 4;
3880 break;
3881 case DeclarationName::CXXOperatorName:
3882 KeyLen += 1;
3883 break;
3884 case DeclarationName::CXXConstructorName:
3885 case DeclarationName::CXXDestructorName:
3886 case DeclarationName::CXXConversionFunctionName:
3887 case DeclarationName::CXXUsingDirective:
3888 break;
3889 }
3890 LE.write<uint16_t>(KeyLen);
3891
3892 // 4 bytes for each DeclID.
3893 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3894 assert(uint16_t(DataLen) == DataLen &&((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3895, __PRETTY_FUNCTION__))
3895 "too many decls for serialized lookup result")((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3895, __PRETTY_FUNCTION__))
;
3896 LE.write<uint16_t>(DataLen);
3897
3898 return std::make_pair(KeyLen, DataLen);
3899 }
3900
3901 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3902 using namespace llvm::support;
3903
3904 endian::Writer LE(Out, little);
3905 LE.write<uint8_t>(Name.getKind());
3906 switch (Name.getKind()) {
3907 case DeclarationName::Identifier:
3908 case DeclarationName::CXXLiteralOperatorName:
3909 case DeclarationName::CXXDeductionGuideName:
3910 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3911 return;
3912 case DeclarationName::ObjCZeroArgSelector:
3913 case DeclarationName::ObjCOneArgSelector:
3914 case DeclarationName::ObjCMultiArgSelector:
3915 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3916 return;
3917 case DeclarationName::CXXOperatorName:
3918 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&((Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
"Invalid operator?") ? static_cast<void> (0) : __assert_fail
("Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3919, __PRETTY_FUNCTION__))
3919 "Invalid operator?")((Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
"Invalid operator?") ? static_cast<void> (0) : __assert_fail
("Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3919, __PRETTY_FUNCTION__))
;
3920 LE.write<uint8_t>(Name.getOperatorKind());
3921 return;
3922 case DeclarationName::CXXConstructorName:
3923 case DeclarationName::CXXDestructorName:
3924 case DeclarationName::CXXConversionFunctionName:
3925 case DeclarationName::CXXUsingDirective:
3926 return;
3927 }
3928
3929 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3929)
;
3930 }
3931
3932 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3933 unsigned DataLen) {
3934 using namespace llvm::support;
3935
3936 endian::Writer LE(Out, little);
3937 uint64_t Start = Out.tell(); (void)Start;
3938 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3939 LE.write<uint32_t>(DeclIDs[I]);
3940 assert(Out.tell() - Start == DataLen && "Data length is wrong")((Out.tell() - Start == DataLen && "Data length is wrong"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3940, __PRETTY_FUNCTION__))
;
3941 }
3942};
3943
3944} // namespace
3945
3946bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3947 DeclContext *DC) {
3948 return Result.hasExternalDecls() &&
3949 DC->hasNeedToReconcileExternalVisibleStorage();
3950}
3951
3952bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3953 DeclContext *DC) {
3954 for (auto *D : Result.getLookupResult())
3955 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3956 return false;
3957
3958 return true;
3959}
3960
3961void
3962ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3963 llvm::SmallVectorImpl<char> &LookupTable) {
3964 assert(!ConstDC->hasLazyLocalLexicalLookups() &&((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3966, __PRETTY_FUNCTION__))
3965 !ConstDC->hasLazyExternalLexicalLookups() &&((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3966, __PRETTY_FUNCTION__))
3966 "must call buildLookups first")((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3966, __PRETTY_FUNCTION__))
;
3967
3968 // FIXME: We need to build the lookups table, which is logically const.
3969 auto *DC = const_cast<DeclContext*>(ConstDC);
3970 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table")((DC == DC->getPrimaryContext() && "only primary DC has lookup table"
) ? static_cast<void> (0) : __assert_fail ("DC == DC->getPrimaryContext() && \"only primary DC has lookup table\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3970, __PRETTY_FUNCTION__))
;
3971
3972 // Create the on-disk hash table representation.
3973 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3974 ASTDeclContextNameLookupTrait> Generator;
3975 ASTDeclContextNameLookupTrait Trait(*this);
3976
3977 // The first step is to collect the declaration names which we need to
3978 // serialize into the name lookup table, and to collect them in a stable
3979 // order.
3980 SmallVector<DeclarationName, 16> Names;
3981
3982 // We also build up small sets of the constructor and conversion function
3983 // names which are visible.
3984 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3985
3986 for (auto &Lookup : *DC->buildLookup()) {
3987 auto &Name = Lookup.first;
3988 auto &Result = Lookup.second;
3989
3990 // If there are no local declarations in our lookup result, we
3991 // don't need to write an entry for the name at all. If we can't
3992 // write out a lookup set without performing more deserialization,
3993 // just skip this entry.
3994 if (isLookupResultExternal(Result, DC) &&
3995 isLookupResultEntirelyExternal(Result, DC))
3996 continue;
3997
3998 // We also skip empty results. If any of the results could be external and
3999 // the currently available results are empty, then all of the results are
4000 // external and we skip it above. So the only way we get here with an empty
4001 // results is when no results could have been external *and* we have
4002 // external results.
4003 //
4004 // FIXME: While we might want to start emitting on-disk entries for negative
4005 // lookups into a decl context as an optimization, today we *have* to skip
4006 // them because there are names with empty lookup results in decl contexts
4007 // which we can't emit in any stable ordering: we lookup constructors and
4008 // conversion functions in the enclosing namespace scope creating empty
4009 // results for them. This in almost certainly a bug in Clang's name lookup,
4010 // but that is likely to be hard or impossible to fix and so we tolerate it
4011 // here by omitting lookups with empty results.
4012 if (Lookup.second.getLookupResult().empty())
4013 continue;
4014
4015 switch (Lookup.first.getNameKind()) {
4016 default:
4017 Names.push_back(Lookup.first);
4018 break;
4019
4020 case DeclarationName::CXXConstructorName:
4021 assert(isa<CXXRecordDecl>(DC) &&((isa<CXXRecordDecl>(DC) && "Cannot have a constructor name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4022, __PRETTY_FUNCTION__))
4022 "Cannot have a constructor name outside of a class!")((isa<CXXRecordDecl>(DC) && "Cannot have a constructor name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4022, __PRETTY_FUNCTION__))
;
4023 ConstructorNameSet.insert(Name);
4024 break;
4025
4026 case DeclarationName::CXXConversionFunctionName:
4027 assert(isa<CXXRecordDecl>(DC) &&((isa<CXXRecordDecl>(DC) && "Cannot have a conversion function name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4028, __PRETTY_FUNCTION__))
4028 "Cannot have a conversion function name outside of a class!")((isa<CXXRecordDecl>(DC) && "Cannot have a conversion function name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4028, __PRETTY_FUNCTION__))
;
4029 ConversionNameSet.insert(Name);
4030 break;
4031 }
4032 }
4033
4034 // Sort the names into a stable order.
4035 llvm::sort(Names);
4036
4037 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4038 // We need to establish an ordering of constructor and conversion function
4039 // names, and they don't have an intrinsic ordering.
4040
4041 // First we try the easy case by forming the current context's constructor
4042 // name and adding that name first. This is a very useful optimization to
4043 // avoid walking the lexical declarations in many cases, and it also
4044 // handles the only case where a constructor name can come from some other
4045 // lexical context -- when that name is an implicit constructor merged from
4046 // another declaration in the redecl chain. Any non-implicit constructor or
4047 // conversion function which doesn't occur in all the lexical contexts
4048 // would be an ODR violation.
4049 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4050 Context->getCanonicalType(Context->getRecordType(D)));
4051 if (ConstructorNameSet.erase(ImplicitCtorName))
4052 Names.push_back(ImplicitCtorName);
4053
4054 // If we still have constructors or conversion functions, we walk all the
4055 // names in the decl and add the constructors and conversion functions
4056 // which are visible in the order they lexically occur within the context.
4057 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4058 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4059 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4060 auto Name = ChildND->getDeclName();
4061 switch (Name.getNameKind()) {
4062 default:
4063 continue;
4064
4065 case DeclarationName::CXXConstructorName:
4066 if (ConstructorNameSet.erase(Name))
4067 Names.push_back(Name);
4068 break;
4069
4070 case DeclarationName::CXXConversionFunctionName:
4071 if (ConversionNameSet.erase(Name))
4072 Names.push_back(Name);
4073 break;
4074 }
4075
4076 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4077 break;
4078 }
4079
4080 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4082, __PRETTY_FUNCTION__))
4081 "constructors by walking all the "((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4082, __PRETTY_FUNCTION__))
4082 "lexical members of the context.")((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4082, __PRETTY_FUNCTION__))
;
4083 assert(ConversionNameSet.empty() && "Failed to find all of the visible "((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4085, __PRETTY_FUNCTION__))
4084 "conversion functions by walking all "((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4085, __PRETTY_FUNCTION__))
4085 "the lexical members of the context.")((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4085, __PRETTY_FUNCTION__))
;
4086 }
4087
4088 // Next we need to do a lookup with each name into this decl context to fully
4089 // populate any results from external sources. We don't actually use the
4090 // results of these lookups because we only want to use the results after all
4091 // results have been loaded and the pointers into them will be stable.
4092 for (auto &Name : Names)
4093 DC->lookup(Name);
4094
4095 // Now we need to insert the results for each name into the hash table. For
4096 // constructor names and conversion function names, we actually need to merge
4097 // all of the results for them into one list of results each and insert
4098 // those.
4099 SmallVector<NamedDecl *, 8> ConstructorDecls;
4100 SmallVector<NamedDecl *, 8> ConversionDecls;
4101
4102 // Now loop over the names, either inserting them or appending for the two
4103 // special cases.
4104 for (auto &Name : Names) {
4105 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4106
4107 switch (Name.getNameKind()) {
4108 default:
4109 Generator.insert(Name, Trait.getData(Result), Trait);
4110 break;
4111
4112 case DeclarationName::CXXConstructorName:
4113 ConstructorDecls.append(Result.begin(), Result.end());
4114 break;
4115
4116 case DeclarationName::CXXConversionFunctionName:
4117 ConversionDecls.append(Result.begin(), Result.end());
4118 break;
4119 }
4120 }
4121
4122 // Handle our two special cases if we ended up having any. We arbitrarily use
4123 // the first declaration's name here because the name itself isn't part of
4124 // the key, only the kind of name is used.
4125 if (!ConstructorDecls.empty())
4126 Generator.insert(ConstructorDecls.front()->getDeclName(),
4127 Trait.getData(ConstructorDecls), Trait);
4128 if (!ConversionDecls.empty())
4129 Generator.insert(ConversionDecls.front()->getDeclName(),
4130 Trait.getData(ConversionDecls), Trait);
4131
4132 // Create the on-disk hash table. Also emit the existing imported and
4133 // merged table if there is one.
4134 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4135 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4136}
4137
4138/// Write the block containing all of the declaration IDs
4139/// visible from the given DeclContext.
4140///
4141/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4142/// bitstream, or 0 if no block was written.
4143uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4144 DeclContext *DC) {
4145 // If we imported a key declaration of this namespace, write the visible
4146 // lookup results as an update record for it rather than including them
4147 // on this declaration. We will only look at key declarations on reload.
4148 if (isa<NamespaceDecl>(DC) && Chain &&
4149 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4150 // Only do this once, for the first local declaration of the namespace.
4151 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4152 Prev = Prev->getPreviousDecl())
4153 if (!Prev->isFromASTFile())
4154 return 0;
4155
4156 // Note that we need to emit an update record for the primary context.
4157 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4158
4159 // Make sure all visible decls are written. They will be recorded later. We
4160 // do this using a side data structure so we can sort the names into
4161 // a deterministic order.
4162 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4163 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4164 LookupResults;
4165 if (Map) {
4166 LookupResults.reserve(Map->size());
4167 for (auto &Entry : *Map)
4168 LookupResults.push_back(
4169 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4170 }
4171
4172 llvm::sort(LookupResults, llvm::less_first());
4173 for (auto &NameAndResult : LookupResults) {
4174 DeclarationName Name = NameAndResult.first;
4175 DeclContext::lookup_result Result = NameAndResult.second;
4176 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4177 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4178 // We have to work around a name lookup bug here where negative lookup
4179 // results for these names get cached in namespace lookup tables (these
4180 // names should never be looked up in a namespace).
4181 assert(Result.empty() && "Cannot have a constructor or conversion "((Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? static_cast<void> (
0) : __assert_fail ("Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4182, __PRETTY_FUNCTION__))
4182 "function name in a namespace!")((Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? static_cast<void> (
0) : __assert_fail ("Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4182, __PRETTY_FUNCTION__))
;
4183 continue;
4184 }
4185
4186 for (NamedDecl *ND : Result)
4187 if (!ND->isFromASTFile())
4188 GetDeclRef(ND);
4189 }
4190
4191 return 0;
4192 }
4193
4194 if (DC->getPrimaryContext() != DC)
4195 return 0;
4196
4197 // Skip contexts which don't support name lookup.
4198 if (!DC->isLookupContext())
4199 return 0;
4200
4201 // If not in C++, we perform name lookup for the translation unit via the
4202 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4203 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4204 return 0;
4205
4206 // Serialize the contents of the mapping used for lookup. Note that,
4207 // although we have two very different code paths, the serialized
4208 // representation is the same for both cases: a declaration name,
4209 // followed by a size, followed by references to the visible
4210 // declarations that have that name.
4211 uint64_t Offset = Stream.GetCurrentBitNo();
4212 StoredDeclsMap *Map = DC->buildLookup();
4213 if (!Map || Map->empty())
4214 return 0;
4215
4216 // Create the on-disk hash table in a buffer.
4217 SmallString<4096> LookupTable;
4218 GenerateNameLookupTable(DC, LookupTable);
4219
4220 // Write the lookup table
4221 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4222 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4223 LookupTable);
4224 ++NumVisibleDeclContexts;
4225 return Offset;
4226}
4227
4228/// Write an UPDATE_VISIBLE block for the given context.
4229///
4230/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4231/// DeclContext in a dependent AST file. As such, they only exist for the TU
4232/// (in C++), for namespaces, and for classes with forward-declared unscoped
4233/// enumeration members (in C++11).
4234void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4235 StoredDeclsMap *Map = DC->getLookupPtr();
4236 if (!Map || Map->empty())
4237 return;
4238
4239 // Create the on-disk hash table in a buffer.
4240 SmallString<4096> LookupTable;
4241 GenerateNameLookupTable(DC, LookupTable);
4242
4243 // If we're updating a namespace, select a key declaration as the key for the
4244 // update record; those are the only ones that will be checked on reload.
4245 if (isa<NamespaceDecl>(DC))
4246 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4247
4248 // Write the lookup table
4249 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4250 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4251}
4252
4253/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4254void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4255 RecordData::value_type Record[] = {Opts.getInt()};
4256 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4257}
4258
4259/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4260void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4261 if (!SemaRef.Context.getLangOpts().OpenCL)
4262 return;
4263
4264 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4265 RecordData Record;
4266 for (const auto &I:Opts.OptMap) {
4267 AddString(I.getKey(), Record);
4268 auto V = I.getValue();
4269 Record.push_back(V.Supported ? 1 : 0);
4270 Record.push_back(V.Enabled ? 1 : 0);
4271 Record.push_back(V.Avail);
4272 Record.push_back(V.Core);
4273 }
4274 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4275}
4276
4277void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4278 if (!SemaRef.Context.getLangOpts().OpenCL)
4279 return;
4280
4281 RecordData Record;
4282 // Sort to allow reproducible .pch files - https://bugs.debian.org/877359
4283 std::map<TypeID, std::set<std::string>> sortedOpenCLTypeExtMap;
4284 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4285 sortedOpenCLTypeExtMap[getTypeID(I.first->getCanonicalTypeInternal())]=I.second;
4286 }
4287 for (const auto &I : sortedOpenCLTypeExtMap) {
4288 Record.push_back(static_cast<unsigned>(I.first));
4289 Record.push_back(I.second.size());
4290 for (auto Ext : I.second)
4291 AddString(Ext, Record);
4292 }
4293 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4294}
4295
4296void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4297 if (!SemaRef.Context.getLangOpts().OpenCL)
4298 return;
4299
4300 RecordData Record;
4301 std::map<DeclID, std::set<std::string>> sortedOpenCLDeclExtMap;
4302 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4303 sortedOpenCLDeclExtMap[getDeclID(I.first)]=I.second;
4304 }
4305 for (const auto &I : sortedOpenCLDeclExtMap) {
4306 Record.push_back(I.first);
4307 Record.push_back(static_cast<unsigned>(I.second.size()));
4308 for (auto Ext : I.second)
4309 AddString(Ext, Record);
4310 }
4311 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4312}
4313
4314void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4315 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4316 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4317 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4318 }
4319}
4320
4321void ASTWriter::WriteObjCCategories() {
4322 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4323 RecordData Categories;
4324
4325 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4326 unsigned Size = 0;
4327 unsigned StartIndex = Categories.size();
4328
4329 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4330
4331 // Allocate space for the size.
4332 Categories.push_back(0);
4333
4334 // Add the categories.
4335 for (ObjCInterfaceDecl::known_categories_iterator
4336 Cat = Class->known_categories_begin(),
4337 CatEnd = Class->known_categories_end();
4338 Cat != CatEnd; ++Cat, ++Size) {
4339 assert(getDeclID(*Cat) != 0 && "Bogus category")((getDeclID(*Cat) != 0 && "Bogus category") ? static_cast
<void> (0) : __assert_fail ("getDeclID(*Cat) != 0 && \"Bogus category\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4339, __PRETTY_FUNCTION__))
;
4340 AddDeclRef(*Cat, Categories);
4341 }
4342
4343 // Update the size.
4344 Categories[StartIndex] = Size;
4345
4346 // Record this interface -> category map.
4347 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4348 CategoriesMap.push_back(CatInfo);
4349 }
4350
4351 // Sort the categories map by the definition ID, since the reader will be
4352 // performing binary searches on this information.
4353 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4354
4355 // Emit the categories map.
4356 using namespace llvm;
4357
4358 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4359 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4360 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4361 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4362 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4363
4364 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4365 Stream.EmitRecordWithBlob(AbbrevID, Record,
4366 reinterpret_cast<char *>(CategoriesMap.data()),
4367 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4368
4369 // Emit the category lists.
4370 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4371}
4372
4373void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4374 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4375
4376 if (LPTMap.empty())
4377 return;
4378
4379 RecordData Record;
4380 for (auto &LPTMapEntry : LPTMap) {
4381 const FunctionDecl *FD = LPTMapEntry.first;
4382 LateParsedTemplate &LPT = *LPTMapEntry.second;
4383 AddDeclRef(FD, Record);
4384 AddDeclRef(LPT.D, Record);
4385 Record.push_back(LPT.Toks.size());
4386
4387 for (const auto &Tok : LPT.Toks) {
4388 AddToken(Tok, Record);
4389 }
4390 }
4391 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4392}
4393
4394/// Write the state of 'pragma clang optimize' at the end of the module.
4395void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4396 RecordData Record;
4397 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4398 AddSourceLocation(PragmaLoc, Record);
4399 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4400}
4401
4402/// Write the state of 'pragma ms_struct' at the end of the module.
4403void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4404 RecordData Record;
4405 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4406 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4407}
4408
4409/// Write the state of 'pragma pointers_to_members' at the end of the
4410//module.
4411void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4412 RecordData Record;
4413 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4414 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4415 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4416}
4417
4418/// Write the state of 'pragma pack' at the end of the module.
4419void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4420 // Don't serialize pragma pack state for modules, since it should only take
4421 // effect on a per-submodule basis.
4422 if (WritingModule)
4423 return;
4424
4425 RecordData Record;
4426 Record.push_back(SemaRef.PackStack.CurrentValue);
4427 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4428 Record.push_back(SemaRef.PackStack.Stack.size());
4429 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4430 Record.push_back(StackEntry.Value);
4431 AddSourceLocation(StackEntry.PragmaLocation, Record);
4432 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4433 AddString(StackEntry.StackSlotLabel, Record);
4434 }
4435 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4436}
4437
4438void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4439 ModuleFileExtensionWriter &Writer) {
4440 // Enter the extension block.
4441 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4442
4443 // Emit the metadata record abbreviation.
4444 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4445 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4446 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4447 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4448 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4449 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4450 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4451 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4452
4453 // Emit the metadata record.
4454 RecordData Record;
4455 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4456 Record.push_back(EXTENSION_METADATA);
4457 Record.push_back(Metadata.MajorVersion);
4458 Record.push_back(Metadata.MinorVersion);
4459 Record.push_back(Metadata.BlockName.size());
4460 Record.push_back(Metadata.UserInfo.size());
4461 SmallString<64> Buffer;
4462 Buffer += Metadata.BlockName;
4463 Buffer += Metadata.UserInfo;
4464 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4465
4466 // Emit the contents of the extension block.
4467 Writer.writeExtensionContents(SemaRef, Stream);
4468
4469 // Exit the extension block.
4470 Stream.ExitBlock();
4471}
4472
4473//===----------------------------------------------------------------------===//
4474// General Serialization Routines
4475//===----------------------------------------------------------------------===//
4476
4477void ASTRecordWriter::AddAttr(const Attr *A) {
4478 auto &Record = *this;
4479 if (!A)
4480 return Record.push_back(0);
4481 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4482 Record.AddSourceRange(A->getRange());
4483
4484#include "clang/Serialization/AttrPCHWrite.inc"
4485}
4486
4487/// Emit the list of attributes to the specified record.
4488void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4489 push_back(Attrs.size());
4490 for (const auto *A : Attrs)
4491 AddAttr(A);
4492}
4493
4494void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4495 AddSourceLocation(Tok.getLocation(), Record);
4496 Record.push_back(Tok.getLength());
4497
4498 // FIXME: When reading literal tokens, reconstruct the literal pointer
4499 // if it is needed.
4500 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4501 // FIXME: Should translate token kind to a stable encoding.
4502 Record.push_back(Tok.getKind());
4503 // FIXME: Should translate token flags to a stable encoding.
4504 Record.push_back(Tok.getFlags());
4505}
4506
4507void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4508 Record.push_back(Str.size());
4509 Record.insert(Record.end(), Str.begin(), Str.end());
4510}
4511
4512bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4513 assert(Context && "should have context when outputting path")((Context && "should have context when outputting path"
) ? static_cast<void> (0) : __assert_fail ("Context && \"should have context when outputting path\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4513, __PRETTY_FUNCTION__))
;
4514
4515 bool Changed =
4516 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4517
4518 // Remove a prefix to make the path relative, if relevant.
4519 const char *PathBegin = Path.data();
4520 const char *PathPtr =
4521 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4522 if (PathPtr != PathBegin) {
4523 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4524 Changed = true;
4525 }
4526
4527 return Changed;
4528}
4529
4530void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4531 SmallString<128> FilePath(Path);
4532 PreparePathForOutput(FilePath);
4533 AddString(FilePath, Record);
4534}
4535
4536void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4537 StringRef Path) {
4538 SmallString<128> FilePath(Path);
4539 PreparePathForOutput(FilePath);
4540 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4541}
4542
4543void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4544 RecordDataImpl &Record) {
4545 Record.push_back(Version.getMajor());
4546 if (Optional<unsigned> Minor = Version.getMinor())
4547 Record.push_back(*Minor + 1);
4548 else
4549 Record.push_back(0);
4550 if (Optional<unsigned> Subminor = Version.getSubminor())
4551 Record.push_back(*Subminor + 1);
4552 else
4553 Record.push_back(0);
4554}
4555
4556/// Note that the identifier II occurs at the given offset
4557/// within the identifier table.
4558void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4559 IdentID ID = IdentifierIDs[II];
4560 // Only store offsets new to this AST file. Other identifier names are looked
4561 // up earlier in the chain and thus don't need an offset.
4562 if (ID >= FirstIdentID)
4563 IdentifierOffsets[ID - FirstIdentID] = Offset;
4564}
4565
4566/// Note that the selector Sel occurs at the given offset
4567/// within the method pool/selector table.
4568void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4569 unsigned ID = SelectorIDs[Sel];
4570 assert(ID && "Unknown selector")((ID && "Unknown selector") ? static_cast<void>
(0) : __assert_fail ("ID && \"Unknown selector\"", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4570, __PRETTY_FUNCTION__))
;
4571 // Don't record offsets for selectors that are also available in a different
4572 // file.
4573 if (ID < FirstSelectorID)
4574 return;
4575 SelectorOffsets[ID - FirstSelectorID] = Offset;
4576}
4577
4578ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4579 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4580 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4581 bool IncludeTimestamps)
4582 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4583 IncludeTimestamps(IncludeTimestamps) {
4584 for (const auto &Ext : Extensions) {
4585 if (auto Writer = Ext->createExtensionWriter(*this))
4586 ModuleFileExtensionWriters.push_back(std::move(Writer));
4587 }
4588}
4589
4590ASTWriter::~ASTWriter() {
4591 llvm::DeleteContainerSeconds(FileDeclIDs);
4592}
4593
4594const LangOptions &ASTWriter::getLangOpts() const {
4595 assert(WritingAST && "can't determine lang opts when not writing AST")((WritingAST && "can't determine lang opts when not writing AST"
) ? static_cast<void> (0) : __assert_fail ("WritingAST && \"can't determine lang opts when not writing AST\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4595, __PRETTY_FUNCTION__))
;
4596 return Context->getLangOpts();
4597}
4598
4599time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4600 return IncludeTimestamps ? E->getModificationTime() : 0;
4601}
4602
4603ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4604 const std::string &OutputFile,
4605 Module *WritingModule, StringRef isysroot,
4606 bool hasErrors) {
4607 WritingAST = true;
4608
4609 ASTHasCompilerErrors = hasErrors;
4610
4611 // Emit the file header.
4612 Stream.Emit((unsigned)'C', 8);
4613 Stream.Emit((unsigned)'P', 8);
4614 Stream.Emit((unsigned)'C', 8);
4615 Stream.Emit((unsigned)'H', 8);
4616
4617 WriteBlockInfoBlock();
4618
4619 Context = &SemaRef.Context;
4620 PP = &SemaRef.PP;
4621 this->WritingModule = WritingModule;
4622 ASTFileSignature Signature =
4623 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4624 Context = nullptr;
4625 PP = nullptr;
4626 this->WritingModule = nullptr;
4627 this->BaseDirectory.clear();
4628
4629 WritingAST = false;
4630 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4631 // Construct MemoryBuffer and update buffer manager.
4632 PCMCache.addBuffer(OutputFile,
4633 llvm::MemoryBuffer::getMemBufferCopy(
4634 StringRef(Buffer.begin(), Buffer.size())));
4635 }
4636 return Signature;
4637}
4638
4639template<typename Vector>
4640static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4641 ASTWriter::RecordData &Record) {
4642 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4643 I != E; ++I) {
4644 Writer.AddDeclRef(*I, Record);
4645 }
4646}
4647
4648ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4649 const std::string &OutputFile,
4650 Module *WritingModule) {
4651 using namespace llvm;
4652
4653 bool isModule = WritingModule != nullptr;
4654
4655 // Make sure that the AST reader knows to finalize itself.
4656 if (Chain)
4657 Chain->finalizeForWriting();
4658
4659 ASTContext &Context = SemaRef.Context;
4660 Preprocessor &PP = SemaRef.PP;
4661
4662 // Set up predefined declaration IDs.
4663 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4664 if (D) {
4665 assert(D->isCanonicalDecl() && "predefined decl is not canonical")((D->isCanonicalDecl() && "predefined decl is not canonical"
) ? static_cast<void> (0) : __assert_fail ("D->isCanonicalDecl() && \"predefined decl is not canonical\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4665, __PRETTY_FUNCTION__))
;
4666 DeclIDs[D] = ID;
4667 }
4668 };
4669 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4670 PREDEF_DECL_TRANSLATION_UNIT_ID);
4671 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4672 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4673 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4674 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4675 PREDEF_DECL_OBJC_PROTOCOL_ID);
4676 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4677 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4678 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4679 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4680 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4681 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4682 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4683 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4684 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4685 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4686 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4687 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4688 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4689 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4690 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4691 RegisterPredefDecl(Context.TypePackElementDecl,
4692 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4693
4694 // Build a record containing all of the tentative definitions in this file, in
4695 // TentativeDefinitions order. Generally, this record will be empty for
4696 // headers.
4697 RecordData TentativeDefinitions;
4698 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4699
4700 // Build a record containing all of the file scoped decls in this file.
4701 RecordData UnusedFileScopedDecls;
4702 if (!isModule)
4703 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4704 UnusedFileScopedDecls);
4705
4706 // Build a record containing all of the delegating constructors we still need
4707 // to resolve.
4708 RecordData DelegatingCtorDecls;
4709 if (!isModule)
4710 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4711
4712 // Write the set of weak, undeclared identifiers. We always write the
4713 // entire table, since later PCH files in a PCH chain are only interested in
4714 // the results at the end of the chain.
4715 RecordData WeakUndeclaredIdentifiers;
4716 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4717 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4718 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4719 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4720 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4721 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4722 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4723 }
4724
4725 // Build a record containing all of the ext_vector declarations.
4726 RecordData ExtVectorDecls;
4727 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4728
4729 // Build a record containing all of the VTable uses information.
4730 RecordData VTableUses;
4731 if (!SemaRef.VTableUses.empty()) {
4732 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4733 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4734 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4735 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4736 }
4737 }
4738
4739 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4740 RecordData UnusedLocalTypedefNameCandidates;
4741 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4742 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4743
4744 // Build a record containing all of pending implicit instantiations.
4745 RecordData PendingInstantiations;
4746 for (const auto &I : SemaRef.PendingInstantiations) {
4747 AddDeclRef(I.first, PendingInstantiations);
4748 AddSourceLocation(I.second, PendingInstantiations);
4749 }
4750 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&((SemaRef.PendingLocalImplicitInstantiations.empty() &&
"There are local ones at end of translation unit!") ? static_cast
<void> (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4751, __PRETTY_FUNCTION__))
4751 "There are local ones at end of translation unit!")((SemaRef.PendingLocalImplicitInstantiations.empty() &&
"There are local ones at end of translation unit!") ? static_cast
<void> (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4751, __PRETTY_FUNCTION__))
;
4752
4753 // Build a record containing some declaration references.
4754 RecordData SemaDeclRefs;
4755 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4756 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4757 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4758 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4759 }
4760
4761 RecordData CUDASpecialDeclRefs;
4762 if (Context.getcudaConfigureCallDecl()) {
4763 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4764 }
4765
4766 // Build a record containing all of the known namespaces.
4767 RecordData KnownNamespaces;
4768 for (const auto &I : SemaRef.KnownNamespaces) {
4769 if (!I.second)
4770 AddDeclRef(I.first, KnownNamespaces);
4771 }
4772
4773 // Build a record of all used, undefined objects that require definitions.
4774 RecordData UndefinedButUsed;
4775
4776 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4777 SemaRef.getUndefinedButUsed(Undefined);
4778 for (const auto &I : Undefined) {
4779 AddDeclRef(I.first, UndefinedButUsed);
4780 AddSourceLocation(I.second, UndefinedButUsed);
4781 }
4782
4783 // Build a record containing all delete-expressions that we would like to
4784 // analyze later in AST.
4785 RecordData DeleteExprsToAnalyze;
4786
4787 if (!isModule) {
4788 for (const auto &DeleteExprsInfo :
4789 SemaRef.getMismatchingDeleteExpressions()) {
4790 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4791 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4792 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4793 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4794 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4795 }
4796 }
4797 }
4798
4799 // Write the control block
4800 WriteControlBlock(PP, Context, isysroot, OutputFile);
4801
4802 // Write the remaining AST contents.
4803 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4804
4805 // This is so that older clang versions, before the introduction
4806 // of the control block, can read and reject the newer PCH format.
4807 {
4808 RecordData Record = {VERSION_MAJOR};
4809 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4810 }
4811
4812 // Create a lexical update block containing all of the declarations in the
4813 // translation unit that do not come from other AST files.
4814 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4815 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4816 for (const auto *D : TU->noload_decls()) {
4817 if (!D->isFromASTFile()) {
4818 NewGlobalKindDeclPairs.push_back(D->getKind());
4819 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4820 }
4821 }
4822
4823 auto Abv = std::make_shared<BitCodeAbbrev>();
4824 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4825 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4826 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4827 {
4828 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4829 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4830 bytes(NewGlobalKindDeclPairs));
4831 }
4832
4833 // And a visible updates block for the translation unit.
4834 Abv = std::make_shared<BitCodeAbbrev>();
4835 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4836 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4837 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4838 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4839 WriteDeclContextVisibleUpdate(TU);
4840
4841 // If we have any extern "C" names, write out a visible update for them.
4842 if (Context.ExternCContext)
4843 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4844
4845 // If the translation unit has an anonymous namespace, and we don't already
4846 // have an update block for it, write it as an update block.
4847 // FIXME: Why do we not do this if there's already an update block?
4848 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4849 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4850 if (Record.empty())
4851 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4852 }
4853
4854 // Add update records for all mangling numbers and static local numbers.
4855 // These aren't really update records, but this is a convenient way of
4856 // tagging this rare extra data onto the declarations.
4857 for (const auto &Number : Context.MangleNumbers)
4858 if (!Number.first->isFromASTFile())
4859 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4860 Number.second));
4861 for (const auto &Number : Context.StaticLocalNumbers)
4862 if (!Number.first->isFromASTFile())
4863 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4864 Number.second));
4865
4866 // Make sure visible decls, added to DeclContexts previously loaded from
4867 // an AST file, are registered for serialization. Likewise for template
4868 // specializations added to imported templates.
4869 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4870 GetDeclRef(I);
4871 }
4872
4873 // Make sure all decls associated with an identifier are registered for
4874 // serialization, if we're storing decls with identifiers.
4875 if (!WritingModule || !getLangOpts().CPlusPlus) {
4876 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4877 for (const auto &ID : PP.getIdentifierTable()) {
4878 const IdentifierInfo *II = ID.second;
4879 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4880 IIs.push_back(II);
4881 }
4882 // Sort the identifiers to visit based on their name.
4883 llvm::sort(IIs, llvm::less_ptr<IdentifierInfo>());
4884 for (const IdentifierInfo *II : IIs) {
4885 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4886 DEnd = SemaRef.IdResolver.end();
4887 D != DEnd; ++D) {
4888 GetDeclRef(*D);
4889 }
4890 }
4891 }
4892
4893 // For method pool in the module, if it contains an entry for a selector,
4894 // the entry should be complete, containing everything introduced by that
4895 // module and all modules it imports. It's possible that the entry is out of
4896 // date, so we need to pull in the new content here.
4897
4898 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4899 // safe, we copy all selectors out.
4900 llvm::SmallVector<Selector, 256> AllSelectors;
4901 for (auto &SelectorAndID : SelectorIDs)
4902 AllSelectors.push_back(SelectorAndID.first);
4903 for (auto &Selector : AllSelectors)
4904 SemaRef.updateOutOfDateSelector(Selector);
4905
4906 // Form the record of special types.
4907 RecordData SpecialTypes;
4908 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4909 AddTypeRef(Context.getFILEType(), SpecialTypes);
4910 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4911 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4912 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4913 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4914 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4915 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4916
4917 if (Chain) {
4918 // Write the mapping information describing our module dependencies and how
4919 // each of those modules were mapped into our own offset/ID space, so that
4920 // the reader can build the appropriate mapping to its own offset/ID space.
4921 // The map consists solely of a blob with the following format:
4922 // *(module-kind:i8
4923 // module-name-len:i16 module-name:len*i8
4924 // source-location-offset:i32
4925 // identifier-id:i32
4926 // preprocessed-entity-id:i32
4927 // macro-definition-id:i32
4928 // submodule-id:i32
4929 // selector-id:i32
4930 // declaration-id:i32
4931 // c++-base-specifiers-id:i32
4932 // type-id:i32)
4933 //
4934 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4935 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4936 // it is the module file name.
4937 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4938 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4939 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4940 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4941 SmallString<2048> Buffer;
4942 {
4943 llvm::raw_svector_ostream Out(Buffer);
4944 for (ModuleFile &M : Chain->ModuleMgr) {
4945 using namespace llvm::support;
4946
4947 endian::Writer LE(Out, little);
4948 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4949 StringRef Name =
4950 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4951 ? M.ModuleName
4952 : M.FileName;
4953 LE.write<uint16_t>(Name.size());
4954 Out.write(Name.data(), Name.size());
4955
4956 // Note: if a base ID was uint max, it would not be possible to load
4957 // another module after it or have more than one entity inside it.
4958 uint32_t None = std::numeric_limits<uint32_t>::max();
4959
4960 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4961 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high")((BaseID < std::numeric_limits<uint32_t>::max() &&
"base id too high") ? static_cast<void> (0) : __assert_fail
("BaseID < std::numeric_limits<uint32_t>::max() && \"base id too high\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4961, __PRETTY_FUNCTION__))
;
4962 if (ShouldWrite)
4963 LE.write<uint32_t>(BaseID);
4964 else
4965 LE.write<uint32_t>(None);
4966 };
4967
4968 // These values should be unique within a chain, since they will be read
4969 // as keys into ContinuousRangeMaps.
4970 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4971 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4972 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4973 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4974 M.NumPreprocessedEntities);
4975 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4976 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4977 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4978 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4979 }
4980 }
4981 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4982 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4983 Buffer.data(), Buffer.size());
4984 }
4985
4986 RecordData DeclUpdatesOffsetsRecord;
4987
4988 // Keep writing types, declarations, and declaration update records
4989 // until we've emitted all of them.
4990 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4991 WriteTypeAbbrevs();
4992 WriteDeclAbbrevs();
4993 do {
4994 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4995 while (!DeclTypesToEmit.empty()) {
4996 DeclOrType DOT = DeclTypesToEmit.front();
4997 DeclTypesToEmit.pop();
4998 if (DOT.isType())
4999 WriteType(DOT.getType());
5000 else
5001 WriteDecl(Context, DOT.getDecl());
5002 }
5003 } while (!DeclUpdates.empty());
5004 Stream.ExitBlock();
5005
5006 DoneWritingDeclsAndTypes = true;
5007
5008 // These things can only be done once we've written out decls and types.
5009 WriteTypeDeclOffsets();
5010 if (!DeclUpdatesOffsetsRecord.empty())
5011 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
5012 WriteFileDeclIDsMap();
5013 WriteSourceManagerBlock(Context.getSourceManager(), PP);
5014 WriteComments();
5015 WritePreprocessor(PP, isModule);
5016 WriteHeaderSearch(PP.getHeaderSearchInfo());
5017 WriteSelectors(SemaRef);
5018 WriteReferencedSelectorsPool(SemaRef);
5019 WriteLateParsedTemplates(SemaRef);
5020 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
5021 WriteFPPragmaOptions(SemaRef.getFPOptions());
5022 WriteOpenCLExtensions(SemaRef);
5023 WriteOpenCLExtensionTypes(SemaRef);
5024 WriteCUDAPragmas(SemaRef);
5025
5026 // If we're emitting a module, write out the submodule information.
5027 if (WritingModule)
5028 WriteSubmodules(WritingModule);
5029
5030 // We need to have information about submodules to correctly deserialize
5031 // decls from OpenCLExtensionDecls block
5032 WriteOpenCLExtensionDecls(SemaRef);
5033
5034 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5035
5036 // Write the record containing external, unnamed definitions.
5037 if (!EagerlyDeserializedDecls.empty())
5038 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5039
5040 if (!ModularCodegenDecls.empty())
5041 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5042
5043 // Write the record containing tentative definitions.
5044 if (!TentativeDefinitions.empty())
5045 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5046
5047 // Write the record containing unused file scoped decls.
5048 if (!UnusedFileScopedDecls.empty())
5049 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5050
5051 // Write the record containing weak undeclared identifiers.
5052 if (!WeakUndeclaredIdentifiers.empty())
5053 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5054 WeakUndeclaredIdentifiers);
5055
5056 // Write the record containing ext_vector type names.
5057 if (!ExtVectorDecls.empty())
5058 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5059
5060 // Write the record containing VTable uses information.
5061 if (!VTableUses.empty())
5062 Stream.EmitRecord(VTABLE_USES, VTableUses);
5063
5064 // Write the record containing potentially unused local typedefs.
5065 if (!UnusedLocalTypedefNameCandidates.empty())
5066 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5067 UnusedLocalTypedefNameCandidates);
5068
5069 // Write the record containing pending implicit instantiations.
5070 if (!PendingInstantiations.empty())
5071 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5072
5073 // Write the record containing declaration references of Sema.
5074 if (!SemaDeclRefs.empty())
5075 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5076
5077 // Write the record containing CUDA-specific declaration references.
5078 if (!CUDASpecialDeclRefs.empty())
5079 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5080
5081 // Write the delegating constructors.
5082 if (!DelegatingCtorDecls.empty())
5083 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5084
5085 // Write the known namespaces.
5086 if (!KnownNamespaces.empty())
5087 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5088
5089 // Write the undefined internal functions and variables, and inline functions.
5090 if (!UndefinedButUsed.empty())
5091 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5092
5093 if (!DeleteExprsToAnalyze.empty())
5094 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5095
5096 // Write the visible updates to DeclContexts.
5097 for (auto *DC : UpdatedDeclContexts)
5098 WriteDeclContextVisibleUpdate(DC);
5099
5100 if (!WritingModule) {
5101 // Write the submodules that were imported, if any.
5102 struct ModuleInfo {
5103 uint64_t ID;
5104 Module *M;
5105 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5106 };
5107 llvm::SmallVector<ModuleInfo, 64> Imports;
5108 for (const auto *I : Context.local_imports()) {
5109 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end())((SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs
.end()) ? static_cast<void> (0) : __assert_fail ("SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5109, __PRETTY_FUNCTION__))
;
5110 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5111 I->getImportedModule()));
5112 }
5113
5114 if (!Imports.empty()) {
5115 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5116 return A.ID < B.ID;
5117 };
5118 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5119 return A.ID == B.ID;
5120 };
5121
5122 // Sort and deduplicate module IDs.
5123 llvm::sort(Imports, Cmp);
5124 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5125 Imports.end());
5126
5127 RecordData ImportedModules;
5128 for (const auto &Import : Imports) {
5129 ImportedModules.push_back(Import.ID);
5130 // FIXME: If the module has macros imported then later has declarations
5131 // imported, this location won't be the right one as a location for the
5132 // declaration imports.
5133 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5134 }
5135
5136 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5137 }
5138 }
5139
5140 WriteObjCCategories();
5141 if(!WritingModule) {
5142 WriteOptimizePragmaOptions(SemaRef);
5143 WriteMSStructPragmaOptions(SemaRef);
5144 WriteMSPointersToMembersPragmaOptions(SemaRef);
5145 }
5146 WritePackPragmaOptions(SemaRef);
5147
5148 // Some simple statistics
5149 RecordData::value_type Record[] = {
5150 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5151 Stream.EmitRecord(STATISTICS, Record);
5152 Stream.ExitBlock();
5153
5154 // Write the module file extension blocks.
5155 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5156 WriteModuleFileExtension(SemaRef, *ExtWriter);
5157
5158 return writeUnhashedControlBlock(PP, Context);
5159}
5160
5161void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5162 if (DeclUpdates.empty())
5163 return;
5164
5165 DeclUpdateMap LocalUpdates;
5166 LocalUpdates.swap(DeclUpdates);
5167
5168 for (auto &DeclUpdate : LocalUpdates) {
5169 const Decl *D = DeclUpdate.first;
5170
5171 bool HasUpdatedBody = false;
5172 RecordData RecordData;
5173 ASTRecordWriter Record(*this, RecordData);
5174 for (auto &Update : DeclUpdate.second) {
5175 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5176
5177 // An updated body is emitted last, so that the reader doesn't need
5178 // to skip over the lazy body to reach statements for other records.
5179 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5180 HasUpdatedBody = true;
5181 else
5182 Record.push_back(Kind);
5183
5184 switch (Kind) {
5185 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5186 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5187 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5188 assert(Update.getDecl() && "no decl to add?")((Update.getDecl() && "no decl to add?") ? static_cast
<void> (0) : __assert_fail ("Update.getDecl() && \"no decl to add?\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5188, __PRETTY_FUNCTION__))
;
5189 Record.push_back(GetDeclRef(Update.getDecl()));
5190 break;
5191
5192 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5193 break;
5194
5195 case UPD_CXX_POINT_OF_INSTANTIATION:
5196 // FIXME: Do we need to also save the template specialization kind here?
5197 Record.AddSourceLocation(Update.getLoc());
5198 break;
5199
5200 case UPD_CXX_ADDED_VAR_DEFINITION: {
5201 const VarDecl *VD = cast<VarDecl>(D);
5202 Record.push_back(VD->isInline());
5203 Record.push_back(VD->isInlineSpecified());
5204 if (VD->getInit()) {
5205 Record.push_back(!VD->isInitKnownICE() ? 1
5206 : (VD->isInitICE() ? 3 : 2));
5207 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5208 } else {
5209 Record.push_back(0);
5210 }
5211 break;
5212 }
5213
5214 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5215 Record.AddStmt(const_cast<Expr *>(
5216 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5217 break;
5218
5219 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5220 Record.AddStmt(
5221 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5222 break;
5223
5224 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5225 auto *RD = cast<CXXRecordDecl>(D);
5226 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5227 Record.push_back(RD->isParamDestroyedInCallee());
5228 Record.push_back(RD->getArgPassingRestrictions());
5229 Record.AddCXXDefinitionData(RD);
5230 Record.AddOffset(WriteDeclContextLexicalBlock(
5231 *Context, const_cast<CXXRecordDecl *>(RD)));
5232
5233 // This state is sometimes updated by template instantiation, when we
5234 // switch from the specialization referring to the template declaration
5235 // to it referring to the template definition.
5236 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5237 Record.push_back(MSInfo->getTemplateSpecializationKind());
5238 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5239 } else {
5240 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5241 Record.push_back(Spec->getTemplateSpecializationKind());
5242 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5243
5244 // The instantiation might have been resolved to a partial
5245 // specialization. If so, record which one.
5246 auto From = Spec->getInstantiatedFrom();
5247 if (auto PartialSpec =
5248 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5249 Record.push_back(true);
5250 Record.AddDeclRef(PartialSpec);
5251 Record.AddTemplateArgumentList(
5252 &Spec->getTemplateInstantiationArgs());
5253 } else {
5254 Record.push_back(false);
5255 }
5256 }
5257 Record.push_back(RD->getTagKind());
5258 Record.AddSourceLocation(RD->getLocation());
5259 Record.AddSourceLocation(RD->getBeginLoc());
5260 Record.AddSourceRange(RD->getBraceRange());
5261
5262 // Instantiation may change attributes; write them all out afresh.
5263 Record.push_back(D->hasAttrs());
5264 if (D->hasAttrs())
5265 Record.AddAttributes(D->getAttrs());
5266
5267 // FIXME: Ensure we don't get here for explicit instantiations.
5268 break;
5269 }
5270
5271 case UPD_CXX_RESOLVED_DTOR_DELETE:
5272 Record.AddDeclRef(Update.getDecl());
5273 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5274 break;
5275
5276 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5277 addExceptionSpec(
5278 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5279 Record);
5280 break;
5281
5282 case UPD_CXX_DEDUCED_RETURN_TYPE:
5283 Record.push_back(GetOrCreateTypeID(Update.getType()));
5284 break;
5285
5286 case UPD_DECL_MARKED_USED:
5287 break;
5288
5289 case UPD_MANGLING_NUMBER:
5290 case UPD_STATIC_LOCAL_NUMBER:
5291 Record.push_back(Update.getNumber());
5292 break;
5293
5294 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5295 Record.AddSourceRange(
5296 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5297 break;
5298
5299 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5300 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5301 Record.AddSourceRange(
5302 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5303 break;
5304
5305 case UPD_DECL_EXPORTED:
5306 Record.push_back(getSubmoduleID(Update.getModule()));
5307 break;
5308
5309 case UPD_ADDED_ATTR_TO_RECORD:
5310 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5311 break;
5312 }
5313 }
5314
5315 if (HasUpdatedBody) {
5316 const auto *Def = cast<FunctionDecl>(D);
5317 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5318 Record.push_back(Def->isInlined());
5319 Record.AddSourceLocation(Def->getInnerLocStart());
5320 Record.AddFunctionDefinition(Def);
5321 }
5322
5323 OffsetsRecord.push_back(GetDeclRef(D));
5324 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5325 }
5326}
5327
5328void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5329 uint32_t Raw = Loc.getRawEncoding();
5330 Record.push_back((Raw << 1) | (Raw >> 31));
5331}
5332
5333void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5334 AddSourceLocation(Range.getBegin(), Record);
5335 AddSourceLocation(Range.getEnd(), Record);
5336}
5337
5338void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5339 Record->push_back(Value.getBitWidth());
5340 const uint64_t *Words = Value.getRawData();
5341 Record->append(Words, Words + Value.getNumWords());
5342}
5343
5344void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5345 Record->push_back(Value.isUnsigned());
5346 AddAPInt(Value);
5347}
5348
5349void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5350 AddAPInt(Value.bitcastToAPInt());
5351}
5352
5353void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5354 Record.push_back(getIdentifierRef(II));
5355}
5356
5357IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5358 if (!II)
5359 return 0;
5360
5361 IdentID &ID = IdentifierIDs[II];
5362 if (ID == 0)
5363 ID = NextIdentID++;
5364 return ID;
5365}
5366
5367MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5368 // Don't emit builtin macros like __LINE__ to the AST file unless they
5369 // have been redefined by the header (in which case they are not
5370 // isBuiltinMacro).
5371 if (!MI || MI->isBuiltinMacro())
5372 return 0;
5373
5374 MacroID &ID = MacroIDs[MI];
5375 if (ID == 0) {
5376 ID = NextMacroID++;
5377 MacroInfoToEmitData Info = { Name, MI, ID };
5378 MacroInfosToEmit.push_back(Info);
5379 }
5380 return ID;
5381}
5382
5383MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5384 if (!MI || MI->isBuiltinMacro())
5385 return 0;
5386
5387 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!")((MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!"
) ? static_cast<void> (0) : __assert_fail ("MacroIDs.find(MI) != MacroIDs.end() && \"Macro not emitted!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5387, __PRETTY_FUNCTION__))
;
5388 return MacroIDs[MI];
5389}
5390
5391uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5392 return IdentMacroDirectivesOffsetMap.lookup(Name);
5393}
5394
5395void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5396 Record->push_back(Writer->getSelectorRef(SelRef));
5397}
5398
5399SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5400 if (Sel.getAsOpaquePtr() == nullptr) {
5401 return 0;
5402 }
5403
5404 SelectorID SID = SelectorIDs[Sel];
5405 if (SID == 0 && Chain) {
5406 // This might trigger a ReadSelector callback, which will set the ID for
5407 // this selector.
5408 Chain->LoadSelector(Sel);
5409 SID = SelectorIDs[Sel];
5410 }
5411 if (SID == 0) {
5412 SID = NextSelectorID++;
5413 SelectorIDs[Sel] = SID;
5414 }
5415 return SID;
5416}
5417
5418void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5419 AddDeclRef(Temp->getDestructor());
5420}
5421
5422void ASTRecordWriter::AddTemplateArgumentLocInfo(
5423 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5424 switch (Kind) {
5425 case TemplateArgument::Expression:
5426 AddStmt(Arg.getAsExpr());
5427 break;
5428 case TemplateArgument::Type:
5429 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5430 break;
5431 case TemplateArgument::Template:
5432 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5433 AddSourceLocation(Arg.getTemplateNameLoc());
5434 break;
5435 case TemplateArgument::TemplateExpansion:
5436 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5437 AddSourceLocation(Arg.getTemplateNameLoc());
5438 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5439 break;
5440 case TemplateArgument::Null:
5441 case TemplateArgument::Integral:
5442 case TemplateArgument::Declaration:
5443 case TemplateArgument::NullPtr:
5444 case TemplateArgument::Pack:
5445 // FIXME: Is this right?
5446 break;
5447 }
5448}
5449
5450void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5451 AddTemplateArgument(Arg.getArgument());
5452
5453 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5454 bool InfoHasSameExpr
5455 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5456 Record->push_back(InfoHasSameExpr);
5457 if (InfoHasSameExpr)
5458 return; // Avoid storing the same expr twice.
5459 }
5460 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5461}
5462
5463void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5464 if (!TInfo) {
5465 AddTypeRef(QualType());
5466 return;
5467 }
5468
5469 AddTypeRef(TInfo->getType());
5470 AddTypeLoc(TInfo->getTypeLoc());
5471}
5472
5473void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5474 TypeLocWriter TLW(*this);
5475 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5476 TLW.Visit(TL);
5477}
5478
5479void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5480 Record.push_back(GetOrCreateTypeID(T));
5481}
5482
5483TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5484 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5484, __PRETTY_FUNCTION__))
;
5485 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5486 if (T.isNull())
5487 return TypeIdx();
5488 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5488, __PRETTY_FUNCTION__))
;
5489
5490 TypeIdx &Idx = TypeIdxs[T];
5491 if (Idx.getIndex() == 0) {
5492 if (DoneWritingDeclsAndTypes) {
5493 assert(0 && "New type seen after serializing all the types to emit!")((0 && "New type seen after serializing all the types to emit!"
) ? static_cast<void> (0) : __assert_fail ("0 && \"New type seen after serializing all the types to emit!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5493, __PRETTY_FUNCTION__))
;
5494 return TypeIdx();
5495 }
5496
5497 // We haven't seen this type before. Assign it a new ID and put it
5498 // into the queue of types to emit.
5499 Idx = TypeIdx(NextTypeID++);
5500 DeclTypesToEmit.push(T);
5501 }
5502 return Idx;
5503 });
5504}
5505
5506TypeID ASTWriter::getTypeID(QualType T) const {
5507 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5507, __PRETTY_FUNCTION__))
;
5508 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5509 if (T.isNull())
5510 return TypeIdx();
5511 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5511, __PRETTY_FUNCTION__))
;
5512
5513 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5514 assert(I != TypeIdxs.end() && "Type not emitted!")((I != TypeIdxs.end() && "Type not emitted!") ? static_cast
<void> (0) : __assert_fail ("I != TypeIdxs.end() && \"Type not emitted!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5514, __PRETTY_FUNCTION__))
;
5515 return I->second;
5516 });
5517}
5518
5519void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5520 Record.push_back(GetDeclRef(D));
5521}
5522
5523DeclID ASTWriter::GetDeclRef(const Decl *D) {
5524 assert(WritingAST && "Cannot request a declaration ID before AST writing")((WritingAST && "Cannot request a declaration ID before AST writing"
) ? static_cast<void> (0) : __assert_fail ("WritingAST && \"Cannot request a declaration ID before AST writing\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5524, __PRETTY_FUNCTION__))
;
5525
5526 if (!D) {
5527 return 0;
5528 }
5529
5530 // If D comes from an AST file, its declaration ID is already known and
5531 // fixed.
5532 if (D->isFromASTFile())
5533 return D->getGlobalID();
5534
5535 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer")((!(reinterpret_cast<uintptr_t>(D) & 0x01) &&
"Invalid decl pointer") ? static_cast<void> (0) : __assert_fail
("!(reinterpret_cast<uintptr_t>(D) & 0x01) && \"Invalid decl pointer\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5535, __PRETTY_FUNCTION__))
;
5536 DeclID &ID = DeclIDs[D];
5537 if (ID == 0) {
5538 if (DoneWritingDeclsAndTypes) {
5539 assert(0 && "New decl seen after serializing all the decls to emit!")((0 && "New decl seen after serializing all the decls to emit!"
) ? static_cast<void> (0) : __assert_fail ("0 && \"New decl seen after serializing all the decls to emit!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5539, __PRETTY_FUNCTION__))
;
5540 return 0;
5541 }
5542
5543 // We haven't seen this declaration before. Give it a new ID and
5544 // enqueue it in the list of declarations to emit.
5545 ID = NextDeclID++;
5546 DeclTypesToEmit.push(const_cast<Decl *>(D));
5547 }
5548
5549 return ID;
5550}
5551
5552DeclID ASTWriter::getDeclID(const Decl *D) {
5553 if (!D)
5554 return 0;
5555
5556 // If D comes from an AST file, its declaration ID is already known and
5557 // fixed.
5558 if (D->isFromASTFile())
5559 return D->getGlobalID();
5560
5561 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!")((DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"
) ? static_cast<void> (0) : __assert_fail ("DeclIDs.find(D) != DeclIDs.end() && \"Declaration not emitted!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5561, __PRETTY_FUNCTION__))
;
5562 return DeclIDs[D];
5563}
5564
5565void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5566 assert(ID)((ID) ? static_cast<void> (0) : __assert_fail ("ID", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5566, __PRETTY_FUNCTION__))
;
5567 assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5567, __PRETTY_FUNCTION__))
;
5568
5569 SourceLocation Loc = D->getLocation();
5570 if (Loc.isInvalid())
5571 return;
5572
5573 // We only keep track of the file-level declarations of each file.
5574 if (!D->getLexicalDeclContext()->isFileContext())
5575 return;
5576 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5577 // a function/objc method, should not have TU as lexical context.
5578 // TemplateTemplateParmDecls that are part of an alias template, should not
5579 // have TU as lexical context.
5580 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5581 return;
5582
5583 SourceManager &SM = Context->getSourceManager();
5584 SourceLocation FileLoc = SM.getFileLoc(Loc);
5585 assert(SM.isLocalSourceLocation(FileLoc))((SM.isLocalSourceLocation(FileLoc)) ? static_cast<void>
(0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5585, __PRETTY_FUNCTION__))
;
5586 FileID FID;
5587 unsigned Offset;
5588 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5589 if (FID.isInvalid())
5590 return;
5591 assert(SM.getSLocEntry(FID).isFile())((SM.getSLocEntry(FID).isFile()) ? static_cast<void> (0
) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5591, __PRETTY_FUNCTION__))
;
5592
5593 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5594 if (!Info)
5595 Info = new DeclIDInFileInfo();
5596
5597 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5598 LocDeclIDsTy &Decls = Info->DeclIDs;
5599
5600 if (Decls.empty() || Decls.back().first <= Offset) {
5601 Decls.push_back(LocDecl);
5602 return;
5603 }
5604
5605 LocDeclIDsTy::iterator I =
5606 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5607
5608 Decls.insert(I, LocDecl);
5609}
5610
5611void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5612 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5613 Record->push_back(Name.getNameKind());
5614 switch (Name.getNameKind()) {
5615 case DeclarationName::Identifier:
5616 AddIdentifierRef(Name.getAsIdentifierInfo());
5617 break;
5618
5619 case DeclarationName::ObjCZeroArgSelector:
5620 case DeclarationName::ObjCOneArgSelector:
5621 case DeclarationName::ObjCMultiArgSelector:
5622 AddSelectorRef(Name.getObjCSelector());
5623 break;
5624
5625 case DeclarationName::CXXConstructorName:
5626 case DeclarationName::CXXDestructorName:
5627 case DeclarationName::CXXConversionFunctionName:
5628 AddTypeRef(Name.getCXXNameType());
5629 break;
5630
5631 case DeclarationName::CXXDeductionGuideName:
5632 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5633 break;
5634
5635 case DeclarationName::CXXOperatorName:
5636 Record->push_back(Name.getCXXOverloadedOperator());
5637 break;
5638
5639 case DeclarationName::CXXLiteralOperatorName:
5640 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5641 break;
5642
5643 case DeclarationName::CXXUsingDirective:
5644 // No extra data to emit
5645 break;
5646 }
5647}
5648
5649unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5650 assert(needsAnonymousDeclarationNumber(D) &&((needsAnonymousDeclarationNumber(D) && "expected an anonymous declaration"
) ? static_cast<void> (0) : __assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5651, __PRETTY_FUNCTION__))
5651 "expected an anonymous declaration")((needsAnonymousDeclarationNumber(D) && "expected an anonymous declaration"
) ? static_cast<void> (0) : __assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5651, __PRETTY_FUNCTION__))
;
5652
5653 // Number the anonymous declarations within this context, if we've not
5654 // already done so.
5655 auto It = AnonymousDeclarationNumbers.find(D);
5656 if (It == AnonymousDeclarationNumbers.end()) {
5657 auto *DC = D->getLexicalDeclContext();
5658 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5659 AnonymousDeclarationNumbers[ND] = Number;
5660 });
5661
5662 It = AnonymousDeclarationNumbers.find(D);
5663 assert(It != AnonymousDeclarationNumbers.end() &&((It != AnonymousDeclarationNumbers.end() && "declaration not found within its lexical context"
) ? static_cast<void> (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5664, __PRETTY_FUNCTION__))
5664 "declaration not found within its lexical context")((It != AnonymousDeclarationNumbers.end() && "declaration not found within its lexical context"
) ? static_cast<void> (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5664, __PRETTY_FUNCTION__))
;
5665 }
5666
5667 return It->second;
5668}
5669
5670void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5671 DeclarationName Name) {
5672 switch (Name.getNameKind()) {
5673 case DeclarationName::CXXConstructorName:
5674 case DeclarationName::CXXDestructorName:
5675 case DeclarationName::CXXConversionFunctionName:
5676 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5677 break;
5678
5679 case DeclarationName::CXXOperatorName:
5680 AddSourceLocation(SourceLocation::getFromRawEncoding(
5681 DNLoc.CXXOperatorName.BeginOpNameLoc));
5682 AddSourceLocation(
5683 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5684 break;
5685
5686 case DeclarationName::CXXLiteralOperatorName:
5687 AddSourceLocation(SourceLocation::getFromRawEncoding(
5688 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5689 break;
5690
5691 case DeclarationName::Identifier:
5692 case DeclarationName::ObjCZeroArgSelector:
5693 case DeclarationName::ObjCOneArgSelector:
5694 case DeclarationName::ObjCMultiArgSelector:
5695 case DeclarationName::CXXUsingDirective:
5696 case DeclarationName::CXXDeductionGuideName:
5697 break;
5698 }
5699}
5700
5701void ASTRecordWriter::AddDeclarationNameInfo(
5702 const DeclarationNameInfo &NameInfo) {
5703 AddDeclarationName(NameInfo.getName());
5704 AddSourceLocation(NameInfo.getLoc());
5705 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5706}
5707
5708void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5709 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5710 Record->push_back(Info.NumTemplParamLists);
5711 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5712 AddTemplateParameterList(Info.TemplParamLists[i]);
5713}
5714
5715void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5716 // Nested name specifiers usually aren't too long. I think that 8 would
5717 // typically accommodate the vast majority.
5718 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5719
5720 // Push each of the NNS's onto a stack for serialization in reverse order.
5721 while (NNS) {
5722 NestedNames.push_back(NNS);
5723 NNS = NNS->getPrefix();
5724 }
5725
5726 Record->push_back(NestedNames.size());
5727 while(!NestedNames.empty()) {
5728 NNS = NestedNames.pop_back_val();
5729 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5730 Record->push_back(Kind);
5731 switch (Kind) {
5732 case NestedNameSpecifier::Identifier:
5733 AddIdentifierRef(NNS->getAsIdentifier());
5734 break;
5735
5736 case NestedNameSpecifier::Namespace:
5737 AddDeclRef(NNS->getAsNamespace());
5738 break;
5739
5740 case NestedNameSpecifier::NamespaceAlias:
5741 AddDeclRef(NNS->getAsNamespaceAlias());
5742 break;
5743
5744 case NestedNameSpecifier::TypeSpec:
5745 case NestedNameSpecifier::TypeSpecWithTemplate:
5746 AddTypeRef(QualType(NNS->getAsType(), 0));
5747 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5748 break;
5749
5750 case NestedNameSpecifier::Global:
5751 // Don't need to write an associated value.
5752 break;
5753
5754 case NestedNameSpecifier::Super:
5755 AddDeclRef(NNS->getAsRecordDecl());
5756 break;
5757 }
5758 }
5759}
5760
5761void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5762 // Nested name specifiers usually aren't too long. I think that 8 would
5763 // typically accommodate the vast majority.
5764 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5765
5766 // Push each of the nested-name-specifiers's onto a stack for
5767 // serialization in reverse order.
5768 while (NNS) {
5769 NestedNames.push_back(NNS);
5770 NNS = NNS.getPrefix();
5771 }
5772
5773 Record->push_back(NestedNames.size());
5774 while(!NestedNames.empty()) {
5775 NNS = NestedNames.pop_back_val();
5776 NestedNameSpecifier::SpecifierKind Kind
5777 = NNS.getNestedNameSpecifier()->getKind();
5778 Record->push_back(Kind);
5779 switch (Kind) {
5780 case NestedNameSpecifier::Identifier:
5781 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5782 AddSourceRange(NNS.getLocalSourceRange());
5783 break;
5784
5785 case NestedNameSpecifier::Namespace:
5786 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5787 AddSourceRange(NNS.getLocalSourceRange());
5788 break;
5789
5790 case NestedNameSpecifier::NamespaceAlias:
5791 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5792 AddSourceRange(NNS.getLocalSourceRange());
5793 break;
5794
5795 case NestedNameSpecifier::TypeSpec:
5796 case NestedNameSpecifier::TypeSpecWithTemplate:
5797 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5798 AddTypeRef(NNS.getTypeLoc().getType());
5799 AddTypeLoc(NNS.getTypeLoc());
5800 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5801 break;
5802
5803 case NestedNameSpecifier::Global:
5804 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5805 break;
5806
5807 case NestedNameSpecifier::Super:
5808 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5809 AddSourceRange(NNS.getLocalSourceRange());
5810 break;
5811 }
5812 }
5813}
5814
5815void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5816 TemplateName::NameKind Kind = Name.getKind();
5817 Record->push_back(Kind);
5818 switch (Kind) {
5819 case TemplateName::Template:
5820 AddDeclRef(Name.getAsTemplateDecl());
5821 break;
5822
5823 case TemplateName::OverloadedTemplate: {
5824 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5825 Record->push_back(OvT->size());
5826 for (const auto &I : *OvT)
5827 AddDeclRef(I);
5828 break;
5829 }
5830
5831 case TemplateName::QualifiedTemplate: {
5832 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5833 AddNestedNameSpecifier(QualT->getQualifier());
5834 Record->push_back(QualT->hasTemplateKeyword());
5835 AddDeclRef(QualT->getTemplateDecl());
5836 break;
5837 }
5838
5839 case TemplateName::DependentTemplate: {
5840 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5841 AddNestedNameSpecifier(DepT->getQualifier());
5842 Record->push_back(DepT->isIdentifier());
5843 if (DepT->isIdentifier())
5844 AddIdentifierRef(DepT->getIdentifier());
5845 else
5846 Record->push_back(DepT->getOperator());
5847 break;
5848 }
5849
5850 case TemplateName::SubstTemplateTemplateParm: {
5851 SubstTemplateTemplateParmStorage *subst
5852 = Name.getAsSubstTemplateTemplateParm();
5853 AddDeclRef(subst->getParameter());
5854 AddTemplateName(subst->getReplacement());
5855 break;
5856 }
5857
5858 case TemplateName::SubstTemplateTemplateParmPack: {
5859 SubstTemplateTemplateParmPackStorage *SubstPack
5860 = Name.getAsSubstTemplateTemplateParmPack();
5861 AddDeclRef(SubstPack->getParameterPack());
5862 AddTemplateArgument(SubstPack->getArgumentPack());
5863 break;
5864 }
5865 }
5866}
5867
5868void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5869 Record->push_back(Arg.getKind());
5870 switch (Arg.getKind()) {
5871 case TemplateArgument::Null:
5872 break;
5873 case TemplateArgument::Type:
5874 AddTypeRef(Arg.getAsType());
5875 break;
5876 case TemplateArgument::Declaration:
5877 AddDeclRef(Arg.getAsDecl());
5878 AddTypeRef(Arg.getParamTypeForDecl());
5879 break;
5880 case TemplateArgument::NullPtr:
5881 AddTypeRef(Arg.getNullPtrType());
5882 break;
5883 case TemplateArgument::Integral:
5884 AddAPSInt(Arg.getAsIntegral());
5885 AddTypeRef(Arg.getIntegralType());
5886 break;
5887 case TemplateArgument::Template:
5888 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5889 break;
5890 case TemplateArgument::TemplateExpansion:
5891 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5892 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5893 Record->push_back(*NumExpansions + 1);
5894 else
5895 Record->push_back(0);
5896 break;
5897 case TemplateArgument::Expression:
5898 AddStmt(Arg.getAsExpr());
5899 break;
5900 case TemplateArgument::Pack:
5901 Record->push_back(Arg.pack_size());
5902 for (const auto &P : Arg.pack_elements())
5903 AddTemplateArgument(P);
5904 break;
5905 }
5906}
5907
5908void ASTRecordWriter::AddTemplateParameterList(
5909 const TemplateParameterList *TemplateParams) {
5910 assert(TemplateParams && "No TemplateParams!")((TemplateParams && "No TemplateParams!") ? static_cast
<void> (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5910, __PRETTY_FUNCTION__))
;
5911 AddSourceLocation(TemplateParams->getTemplateLoc());
5912 AddSourceLocation(TemplateParams->getLAngleLoc());
5913 AddSourceLocation(TemplateParams->getRAngleLoc());
5914 // TODO: Concepts
5915 Record->push_back(TemplateParams->size());
5916 for (const auto &P : *TemplateParams)
5917 AddDeclRef(P);
5918}
5919
5920/// Emit a template argument list.
5921void ASTRecordWriter::AddTemplateArgumentList(
5922 const TemplateArgumentList *TemplateArgs) {
5923 assert(TemplateArgs && "No TemplateArgs!")((TemplateArgs && "No TemplateArgs!") ? static_cast<
void> (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5923, __PRETTY_FUNCTION__))
;
5924 Record->push_back(TemplateArgs->size());
5925 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5926 AddTemplateArgument(TemplateArgs->get(i));
5927}
5928
5929void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5930 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5931 assert(ASTTemplArgList && "No ASTTemplArgList!")((ASTTemplArgList && "No ASTTemplArgList!") ? static_cast
<void> (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5931, __PRETTY_FUNCTION__))
;
5932 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5933 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5934 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5935 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5936 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5937 AddTemplateArgumentLoc(TemplArgs[i]);
5938}
5939
5940void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5941 Record->push_back(Set.size());
5942 for (ASTUnresolvedSet::const_iterator
5943 I = Set.begin(), E = Set.end(); I != E; ++I) {
5944 AddDeclRef(I.getDecl());
5945 Record->push_back(I.getAccess());
5946 }
5947}
5948
5949// FIXME: Move this out of the main ASTRecordWriter interface.
5950void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5951 Record->push_back(Base.isVirtual());
5952 Record->push_back(Base.isBaseOfClass());
5953 Record->push_back(Base.getAccessSpecifierAsWritten());
5954 Record->push_back(Base.getInheritConstructors());
5955 AddTypeSourceInfo(Base.getTypeSourceInfo());
5956 AddSourceRange(Base.getSourceRange());
5957 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5958 : SourceLocation());
5959}
5960
5961static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5962 ArrayRef<CXXBaseSpecifier> Bases) {
5963 ASTWriter::RecordData Record;
5964 ASTRecordWriter Writer(W, Record);
5965 Writer.push_back(Bases.size());
5966
5967 for (auto &Base : Bases)
5968 Writer.AddCXXBaseSpecifier(Base);
5969
5970 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5971}
5972
5973// FIXME: Move this out of the main ASTRecordWriter interface.
5974void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5975 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5976}
5977
5978static uint64_t
5979EmitCXXCtorInitializers(ASTWriter &W,
5980 ArrayRef<CXXCtorInitializer *> CtorInits) {
5981 ASTWriter::RecordData Record;
5982 ASTRecordWriter Writer(W, Record);
5983 Writer.push_back(CtorInits.size());
5984
5985 for (auto *Init : CtorInits) {
5986 if (Init->isBaseInitializer()) {
5987 Writer.push_back(CTOR_INITIALIZER_BASE);
5988 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5989 Writer.push_back(Init->isBaseVirtual());
5990 } else if (Init->isDelegatingInitializer()) {
5991 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5992 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5993 } else if (Init->isMemberInitializer()){
5994 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5995 Writer.AddDeclRef(Init->getMember());
5996 } else {
5997 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5998 Writer.AddDeclRef(Init->getIndirectMember());
5999 }
6000
6001 Writer.AddSourceLocation(Init->getMemberLocation());
6002 Writer.AddStmt(Init->getInit());
6003 Writer.AddSourceLocation(Init->getLParenLoc());
6004 Writer.AddSourceLocation(Init->getRParenLoc());
6005 Writer.push_back(Init->isWritten());
6006 if (Init->isWritten())
6007 Writer.push_back(Init->getSourceOrder());
6008 }
6009
6010 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
6011}
6012
6013// FIXME: Move this out of the main ASTRecordWriter interface.
6014void ASTRecordWriter::AddCXXCtorInitializers(
6015 ArrayRef<CXXCtorInitializer *> CtorInits) {
6016 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
6017}
6018
6019void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
6020 auto &Data = D->data();
6021 Record->push_back(Data.IsLambda);
6022 Record->push_back(Data.UserDeclaredConstructor);
6023 Record->push_back(Data.UserDeclaredSpecialMembers);
6024 Record->push_back(Data.Aggregate);
6025 Record->push_back(Data.PlainOldData);
6026 Record->push_back(Data.Empty);
6027 Record->push_back(Data.Polymorphic);
6028 Record->push_back(Data.Abstract);
6029 Record->push_back(Data.IsStandardLayout);
6030 Record->push_back(Data.IsCXX11StandardLayout);
6031 Record->push_back(Data.HasBasesWithFields);
6032 Record->push_back(Data.HasBasesWithNonStaticDataMembers);
6033 Record->push_back(Data.HasPrivateFields);
6034 Record->push_back(Data.HasProtectedFields);
6035 Record->push_back(Data.HasPublicFields);
6036 Record->push_back(Data.HasMutableFields);
6037 Record->push_back(Data.HasVariantMembers);
6038 Record->push_back(Data.HasOnlyCMembers);
6039 Record->push_back(Data.HasInClassInitializer);
6040 Record->push_back(Data.HasUninitializedReferenceMember);
6041 Record->push_back(Data.HasUninitializedFields);
6042 Record->push_back(Data.HasInheritedConstructor);
6043 Record->push_back(Data.HasInheritedAssignment);
6044 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
6045 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
6046 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
6047 Record->push_back(Data.NeedOverloadResolutionForDestructor);
6048 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
6049 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
6050 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
6051 Record->push_back(Data.DefaultedDestructorIsDeleted);
6052 Record->push_back(Data.HasTrivialSpecialMembers);
6053 Record->push_back(Data.HasTrivialSpecialMembersForCall);
6054 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
6055 Record->push_back(Data.DeclaredNonTrivialSpecialMembersForCall);
6056 Record->push_back(Data.HasIrrelevantDestructor);
6057 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
6058 Record->push_back(Data.HasDefaultedDefaultConstructor);
6059 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
6060 Record->push_back(Data.HasConstexprDefaultConstructor);
6061 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
6062 Record->push_back(Data.ComputedVisibleConversions);
6063 Record->push_back(Data.UserProvidedDefaultConstructor);
6064 Record->push_back(Data.DeclaredSpecialMembers);
6065 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
6066 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
6067 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
6068 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
6069 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6070
6071 // getODRHash will compute the ODRHash if it has not been previously computed.
6072 Record->push_back(D->getODRHash());
6073 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6074 Writer->WritingModule && !D->isDependentType();
6075 Record->push_back(ModulesDebugInfo);
6076 if (ModulesDebugInfo)
6077 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6078
6079 // IsLambda bit is already saved.
6080
6081 Record->push_back(Data.NumBases);
6082 if (Data.NumBases > 0)
6083 AddCXXBaseSpecifiers(Data.bases());
6084
6085 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6086 Record->push_back(Data.NumVBases);
6087 if (Data.NumVBases > 0)
6088 AddCXXBaseSpecifiers(Data.vbases());
6089
6090 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6091 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6092 // Data.Definition is the owning decl, no need to write it.
6093 AddDeclRef(D->getFirstFriend());
6094
6095 // Add lambda-specific data.
6096 if (Data.IsLambda) {
6097 auto &Lambda = D->getLambdaData();
6098 Record->push_back(Lambda.Dependent);
6099 Record->push_back(Lambda.IsGenericLambda);
6100 Record->push_back(Lambda.CaptureDefault);
6101 Record->push_back(Lambda.NumCaptures);
6102 Record->push_back(Lambda.NumExplicitCaptures);
6103 Record->push_back(Lambda.ManglingNumber);
6104 AddDeclRef(D->getLambdaContextDecl());
6105 AddTypeSourceInfo(Lambda.MethodTyInfo);
6106 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6107 const LambdaCapture &Capture = Lambda.Captures[I];
6108 AddSourceLocation(Capture.getLocation());
6109 Record->push_back(Capture.isImplicit());
6110 Record->push_back(Capture.getCaptureKind());
6111 switch (Capture.getCaptureKind()) {
6112 case LCK_StarThis:
6113 case LCK_This:
6114 case LCK_VLAType:
6115 break;
6116 case LCK_ByCopy:
6117 case LCK_ByRef:
6118 VarDecl *Var =
6119 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6120 AddDeclRef(Var);
6121 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6122 : SourceLocation());
6123 break;
6124 }
6125 }
6126 }
6127}
6128
6129void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6130 assert(Reader && "Cannot remove chain")((Reader && "Cannot remove chain") ? static_cast<void
> (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6130, __PRETTY_FUNCTION__))
;
6131 assert((!Chain || Chain == Reader) && "Cannot replace chain")(((!Chain || Chain == Reader) && "Cannot replace chain"
) ? static_cast<void> (0) : __assert_fail ("(!Chain || Chain == Reader) && \"Cannot replace chain\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6131, __PRETTY_FUNCTION__))
;
6132 assert(FirstDeclID == NextDeclID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6133 FirstTypeID == NextTypeID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6134 FirstIdentID == NextIdentID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6135 FirstMacroID == NextMacroID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6136 FirstSubmoduleID == NextSubmoduleID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6137 FirstSelectorID == NextSelectorID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
6138 "Setting chain after writing has started.")((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6138, __PRETTY_FUNCTION__))
;
6139
6140 Chain = Reader;
6141
6142 // Note, this will get called multiple times, once one the reader starts up
6143 // and again each time it's done reading a PCH or module.
6144 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6145 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6146 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6147 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6148 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6149 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6150 NextDeclID = FirstDeclID;
6151 NextTypeID = FirstTypeID;
6152 NextIdentID = FirstIdentID;
6153 NextMacroID = FirstMacroID;
6154 NextSelectorID = FirstSelectorID;
6155 NextSubmoduleID = FirstSubmoduleID;
6156}
6157
6158void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6159 // Always keep the highest ID. See \p TypeRead() for more information.
6160 IdentID &StoredID = IdentifierIDs[II];
6161 if (ID > StoredID)
6162 StoredID = ID;
6163}
6164
6165void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6166 // Always keep the highest ID. See \p TypeRead() for more information.
6167 MacroID &StoredID = MacroIDs[MI];
6168 if (ID > StoredID)
6169 StoredID = ID;
6170}
6171
6172void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6173 // Always take the highest-numbered type index. This copes with an interesting
6174 // case for chained AST writing where we schedule writing the type and then,
6175 // later, deserialize the type from another AST. In this case, we want to
6176 // keep the higher-numbered entry so that we can properly write it out to
6177 // the AST file.
6178 TypeIdx &StoredIdx = TypeIdxs[T];
6179 if (Idx.getIndex() >= StoredIdx.getIndex())
6180 StoredIdx = Idx;
6181}
6182
6183void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6184 // Always keep the highest ID. See \p TypeRead() for more information.
6185 SelectorID &StoredID = SelectorIDs[S];
6186 if (ID > StoredID)
6187 StoredID = ID;
6188}
6189
6190void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
6191 MacroDefinitionRecord *MD) {
6192 assert(MacroDefinitions.find(MD) == MacroDefinitions.end())((MacroDefinitions.find(MD) == MacroDefinitions.end()) ? static_cast
<void> (0) : __assert_fail ("MacroDefinitions.find(MD) == MacroDefinitions.end()"
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6192, __PRETTY_FUNCTION__))
;
6193 MacroDefinitions[MD] = ID;
6194}
6195
6196void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
6197