Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 2143, column 7
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 -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 _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-8~svn345461/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn345461/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~svn345461/build-llvm/tools/clang/lib/Serialization -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-10-27-211344-32123-1 -x c++ /build/llvm-toolchain-snapshot-8~svn345461/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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 187)
;
188}
189
190void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
191 Record.AddTypeRef(T->getElementType());
192 Code = TYPE_COMPLEX;
193}
194
195void ASTTypeWriter::VisitPointerType(const PointerType *T) {
196 Record.AddTypeRef(T->getPointeeType());
197 Code = TYPE_POINTER;
198}
199
200void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
201 Record.AddTypeRef(T->getOriginalType());
202 Code = TYPE_DECAYED;
203}
204
205void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
206 Record.AddTypeRef(T->getOriginalType());
207 Record.AddTypeRef(T->getAdjustedType());
208 Code = TYPE_ADJUSTED;
209}
210
211void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
212 Record.AddTypeRef(T->getPointeeType());
213 Code = TYPE_BLOCK_POINTER;
214}
215
216void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
217 Record.AddTypeRef(T->getPointeeTypeAsWritten());
218 Record.push_back(T->isSpelledAsLValue());
219 Code = TYPE_LVALUE_REFERENCE;
220}
221
222void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
223 Record.AddTypeRef(T->getPointeeTypeAsWritten());
224 Code = TYPE_RVALUE_REFERENCE;
225}
226
227void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
228 Record.AddTypeRef(T->getPointeeType());
229 Record.AddTypeRef(QualType(T->getClass(), 0));
230 Code = TYPE_MEMBER_POINTER;
231}
232
233void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
234 Record.AddTypeRef(T->getElementType());
235 Record.push_back(T->getSizeModifier()); // FIXME: stable values
236 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
237}
238
239void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
240 VisitArrayType(T);
241 Record.AddAPInt(T->getSize());
242 Code = TYPE_CONSTANT_ARRAY;
243}
244
245void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
246 VisitArrayType(T);
247 Code = TYPE_INCOMPLETE_ARRAY;
248}
249
250void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
251 VisitArrayType(T);
252 Record.AddSourceLocation(T->getLBracketLoc());
253 Record.AddSourceLocation(T->getRBracketLoc());
254 Record.AddStmt(T->getSizeExpr());
255 Code = TYPE_VARIABLE_ARRAY;
256}
257
258void ASTTypeWriter::VisitVectorType(const VectorType *T) {
259 Record.AddTypeRef(T->getElementType());
260 Record.push_back(T->getNumElements());
261 Record.push_back(T->getVectorKind());
262 Code = TYPE_VECTOR;
263}
264
265void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
266 VisitVectorType(T);
267 Code = TYPE_EXT_VECTOR;
268}
269
270void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
271 Record.AddTypeRef(T->getReturnType());
272 FunctionType::ExtInfo C = T->getExtInfo();
273 Record.push_back(C.getNoReturn());
274 Record.push_back(C.getHasRegParm());
275 Record.push_back(C.getRegParm());
276 // FIXME: need to stabilize encoding of calling convention...
277 Record.push_back(C.getCC());
278 Record.push_back(C.getProducesResult());
279 Record.push_back(C.getNoCallerSavedRegs());
280 Record.push_back(C.getNoCfCheck());
281
282 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
283 AbbrevToUse = 0;
284}
285
286void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
287 VisitFunctionType(T);
288 Code = TYPE_FUNCTION_NO_PROTO;
289}
290
291static void addExceptionSpec(const FunctionProtoType *T,
292 ASTRecordWriter &Record) {
293 Record.push_back(T->getExceptionSpecType());
294 if (T->getExceptionSpecType() == EST_Dynamic) {
295 Record.push_back(T->getNumExceptions());
296 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
297 Record.AddTypeRef(T->getExceptionType(I));
298 } else if (isComputedNoexcept(T->getExceptionSpecType())) {
299 Record.AddStmt(T->getNoexceptExpr());
300 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
301 Record.AddDeclRef(T->getExceptionSpecDecl());
302 Record.AddDeclRef(T->getExceptionSpecTemplate());
303 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
304 Record.AddDeclRef(T->getExceptionSpecDecl());
305 }
306}
307
308void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
309 VisitFunctionType(T);
310
311 Record.push_back(T->isVariadic());
312 Record.push_back(T->hasTrailingReturn());
313 Record.push_back(T->getTypeQuals());
314 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
315 addExceptionSpec(T, Record);
316
317 Record.push_back(T->getNumParams());
318 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
319 Record.AddTypeRef(T->getParamType(I));
320
321 if (T->hasExtParameterInfos()) {
322 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
323 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
324 }
325
326 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
327 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
328 T->hasExtParameterInfos())
329 AbbrevToUse = 0;
330
331 Code = TYPE_FUNCTION_PROTO;
332}
333
334void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
335 Record.AddDeclRef(T->getDecl());
336 Code = TYPE_UNRESOLVED_USING;
337}
338
339void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
340 Record.AddDeclRef(T->getDecl());
341 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?")((!T->isCanonicalUnqualified() && "Invalid typedef ?"
) ? static_cast<void> (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-8~svn345461/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~svn345461/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~svn345461/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~svn345461/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~svn345461/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~svn345461/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 AddString(PPOpts.ImplicitPTHInclude, Record);
1699 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1700 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1701
1702 // Leave the options block.
1703 Stream.ExitBlock();
1704
1705 // Original file name and file ID
1706 SourceManager &SM = Context.getSourceManager();
1707 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1708 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1709 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1710 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1711 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1712 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1713
1714 Record.clear();
1715 Record.push_back(ORIGINAL_FILE);
1716 Record.push_back(SM.getMainFileID().getOpaqueValue());
1717 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1718 }
1719
1720 Record.clear();
1721 Record.push_back(SM.getMainFileID().getOpaqueValue());
1722 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1723
1724 // Original PCH directory
1725 if (!OutputFile.empty() && OutputFile != "-") {
1726 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1727 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1728 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1729 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1730
1731 SmallString<128> OutputPath(OutputFile);
1732
1733 SM.getFileManager().makeAbsolutePath(OutputPath);
1734 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1735
1736 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1737 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1738 }
1739
1740 WriteInputFiles(Context.SourceMgr,
1741 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1742 PP.getLangOpts().Modules);
1743 Stream.ExitBlock();
1744}
1745
1746namespace {
1747
1748/// An input file.
1749struct InputFileEntry {
1750 const FileEntry *File;
1751 bool IsSystemFile;
1752 bool IsTransient;
1753 bool BufferOverridden;
1754 bool IsTopLevelModuleMap;
1755};
1756
1757} // namespace
1758
1759void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1760 HeaderSearchOptions &HSOpts,
1761 bool Modules) {
1762 using namespace llvm;
1763
1764 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1765
1766 // Create input-file abbreviation.
1767 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1768 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1769 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1770 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1771 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1772 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1773 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1774 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1775 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1776 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1777
1778 // Get all ContentCache objects for files, sorted by whether the file is a
1779 // system one or not. System files go at the back, users files at the front.
1780 std::deque<InputFileEntry> SortedFiles;
1781 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1782 // Get this source location entry.
1783 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1784 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1784, __PRETTY_FUNCTION__))
;
1785
1786 // We only care about file entries that were not overridden.
1787 if (!SLoc->isFile())
1788 continue;
1789 const SrcMgr::FileInfo &File = SLoc->getFile();
1790 const SrcMgr::ContentCache *Cache = File.getContentCache();
1791 if (!Cache->OrigEntry)
1792 continue;
1793
1794 InputFileEntry Entry;
1795 Entry.File = Cache->OrigEntry;
1796 Entry.IsSystemFile = Cache->IsSystemFile;
1797 Entry.IsTransient = Cache->IsTransient;
1798 Entry.BufferOverridden = Cache->BufferOverridden;
1799 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1800 File.getIncludeLoc().isInvalid();
1801 if (Cache->IsSystemFile)
1802 SortedFiles.push_back(Entry);
1803 else
1804 SortedFiles.push_front(Entry);
1805 }
1806
1807 unsigned UserFilesNum = 0;
1808 // Write out all of the input files.
1809 std::vector<uint64_t> InputFileOffsets;
1810 for (const auto &Entry : SortedFiles) {
1811 uint32_t &InputFileID = InputFileIDs[Entry.File];
1812 if (InputFileID != 0)
1813 continue; // already recorded this file.
1814
1815 // Record this entry's offset.
1816 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1817
1818 InputFileID = InputFileOffsets.size();
1819
1820 if (!Entry.IsSystemFile)
1821 ++UserFilesNum;
1822
1823 // Emit size/modification time for this file.
1824 // And whether this file was overridden.
1825 RecordData::value_type Record[] = {
1826 INPUT_FILE,
1827 InputFileOffsets.size(),
1828 (uint64_t)Entry.File->getSize(),
1829 (uint64_t)getTimestampForOutput(Entry.File),
1830 Entry.BufferOverridden,
1831 Entry.IsTransient,
1832 Entry.IsTopLevelModuleMap};
1833
1834 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1835 }
1836
1837 Stream.ExitBlock();
1838
1839 // Create input file offsets abbreviation.
1840 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1841 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1842 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1843 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1844 // input files
1845 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1846 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1847
1848 // Write input file offsets.
1849 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1850 InputFileOffsets.size(), UserFilesNum};
1851 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1852}
1853
1854//===----------------------------------------------------------------------===//
1855// Source Manager Serialization
1856//===----------------------------------------------------------------------===//
1857
1858/// Create an abbreviation for the SLocEntry that refers to a
1859/// file.
1860static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1861 using namespace llvm;
1862
1863 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1864 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1865 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1866 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1867 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1868 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1869 // FileEntry fields.
1870 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1871 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1874 return Stream.EmitAbbrev(std::move(Abbrev));
1875}
1876
1877/// Create an abbreviation for the SLocEntry that refers to a
1878/// buffer.
1879static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1880 using namespace llvm;
1881
1882 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1883 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1884 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1885 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1886 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1887 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1888 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1889 return Stream.EmitAbbrev(std::move(Abbrev));
1890}
1891
1892/// Create an abbreviation for the SLocEntry that refers to a
1893/// buffer's blob.
1894static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1895 bool Compressed) {
1896 using namespace llvm;
1897
1898 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1899 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1900 : SM_SLOC_BUFFER_BLOB));
1901 if (Compressed)
1902 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1903 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1904 return Stream.EmitAbbrev(std::move(Abbrev));
1905}
1906
1907/// Create an abbreviation for the SLocEntry that refers to a macro
1908/// expansion.
1909static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1910 using namespace llvm;
1911
1912 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1913 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1914 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1915 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1916 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1917 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1918 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1919 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1920 return Stream.EmitAbbrev(std::move(Abbrev));
1921}
1922
1923namespace {
1924
1925 // Trait used for the on-disk hash table of header search information.
1926 class HeaderFileInfoTrait {
1927 ASTWriter &Writer;
1928
1929 // Keep track of the framework names we've used during serialization.
1930 SmallVector<char, 128> FrameworkStringData;
1931 llvm::StringMap<unsigned> FrameworkNameOffset;
1932
1933 public:
1934 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1935
1936 struct key_type {
1937 StringRef Filename;
1938 off_t Size;
1939 time_t ModTime;
1940 };
1941 using key_type_ref = const key_type &;
1942
1943 using UnresolvedModule =
1944 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1945
1946 struct data_type {
1947 const HeaderFileInfo &HFI;
1948 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1949 UnresolvedModule Unresolved;
1950 };
1951 using data_type_ref = const data_type &;
1952
1953 using hash_value_type = unsigned;
1954 using offset_type = unsigned;
1955
1956 hash_value_type ComputeHash(key_type_ref key) {
1957 // The hash is based only on size/time of the file, so that the reader can
1958 // match even when symlinking or excess path elements ("foo/../", "../")
1959 // change the form of the name. However, complete path is still the key.
1960 return llvm::hash_combine(key.Size, key.ModTime);
1961 }
1962
1963 std::pair<unsigned, unsigned>
1964 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1965 using namespace llvm::support;
1966
1967 endian::Writer LE(Out, little);
1968 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1969 LE.write<uint16_t>(KeyLen);
1970 unsigned DataLen = 1 + 2 + 4 + 4;
1971 for (auto ModInfo : Data.KnownHeaders)
1972 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1973 DataLen += 4;
1974 if (Data.Unresolved.getPointer())
1975 DataLen += 4;
1976 LE.write<uint8_t>(DataLen);
1977 return std::make_pair(KeyLen, DataLen);
1978 }
1979
1980 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1981 using namespace llvm::support;
1982
1983 endian::Writer LE(Out, little);
1984 LE.write<uint64_t>(key.Size);
1985 KeyLen -= 8;
1986 LE.write<uint64_t>(key.ModTime);
1987 KeyLen -= 8;
1988 Out.write(key.Filename.data(), KeyLen);
1989 }
1990
1991 void EmitData(raw_ostream &Out, key_type_ref key,
1992 data_type_ref Data, unsigned DataLen) {
1993 using namespace llvm::support;
1994
1995 endian::Writer LE(Out, little);
1996 uint64_t Start = Out.tell(); (void)Start;
1997
1998 unsigned char Flags = (Data.HFI.isImport << 5)
1999 | (Data.HFI.isPragmaOnce << 4)
2000 | (Data.HFI.DirInfo << 1)
2001 | Data.HFI.IndexHeaderMapHeader;
2002 LE.write<uint8_t>(Flags);
2003 LE.write<uint16_t>(Data.HFI.NumIncludes);
2004
2005 if (!Data.HFI.ControllingMacro)
2006 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
2007 else
2008 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
2009
2010 unsigned Offset = 0;
2011 if (!Data.HFI.Framework.empty()) {
2012 // If this header refers into a framework, save the framework name.
2013 llvm::StringMap<unsigned>::iterator Pos
2014 = FrameworkNameOffset.find(Data.HFI.Framework);
2015 if (Pos == FrameworkNameOffset.end()) {
2016 Offset = FrameworkStringData.size() + 1;
2017 FrameworkStringData.append(Data.HFI.Framework.begin(),
2018 Data.HFI.Framework.end());
2019 FrameworkStringData.push_back(0);
2020
2021 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2022 } else
2023 Offset = Pos->second;
2024 }
2025 LE.write<uint32_t>(Offset);
2026
2027 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2028 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2029 uint32_t Value = (ModID << 2) | (unsigned)Role;
2030 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2030, __PRETTY_FUNCTION__))
;
2031 LE.write<uint32_t>(Value);
2032 }
2033 };
2034
2035 // FIXME: If the header is excluded, we should write out some
2036 // record of that fact.
2037 for (auto ModInfo : Data.KnownHeaders)
2038 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2039 if (Data.Unresolved.getPointer())
2040 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2041
2042 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2042, __PRETTY_FUNCTION__))
;
2043 }
2044
2045 const char *strings_begin() const { return FrameworkStringData.begin(); }
2046 const char *strings_end() const { return FrameworkStringData.end(); }
2047 };
2048
2049} // namespace
2050
2051/// Write the header search block for the list of files that
2052///
2053/// \param HS The header search structure to save.
2054void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2055 HeaderFileInfoTrait GeneratorTrait(*this);
2056 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2057 SmallVector<const char *, 4> SavedStrings;
2058 unsigned NumHeaderSearchEntries = 0;
2059
2060 // Find all unresolved headers for the current module. We generally will
2061 // have resolved them before we get here, but not necessarily: we might be
2062 // compiling a preprocessed module, where there is no requirement for the
2063 // original files to exist any more.
2064 const HeaderFileInfo Empty; // So we can take a reference.
2065 if (WritingModule) {
1
Assuming the condition is false
2
Taking false branch
2066 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2067 while (!Worklist.empty()) {
2068 Module *M = Worklist.pop_back_val();
2069 if (!M->isAvailable())
2070 continue;
2071
2072 // Map to disk files where possible, to pick up any missing stat
2073 // information. This also means we don't need to check the unresolved
2074 // headers list when emitting resolved headers in the first loop below.
2075 // FIXME: It'd be preferable to avoid doing this if we were given
2076 // sufficient stat information in the module map.
2077 HS.getModuleMap().resolveHeaderDirectives(M);
2078
2079 // If the file didn't exist, we can still create a module if we were given
2080 // enough information in the module map.
2081 for (auto U : M->MissingHeaders) {
2082 // Check that we were given enough information to build a module
2083 // without this file existing on disk.
2084 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
2085 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2086 << WritingModule->getFullModuleName() << U.Size.hasValue()
2087 << U.FileName;
2088 continue;
2089 }
2090
2091 // Form the effective relative pathname for the file.
2092 SmallString<128> Filename(M->Directory->getName());
2093 llvm::sys::path::append(Filename, U.FileName);
2094 PreparePathForOutput(Filename);
2095
2096 StringRef FilenameDup = strdup(Filename.c_str());
2097 SavedStrings.push_back(FilenameDup.data());
2098
2099 HeaderFileInfoTrait::key_type Key = {
2100 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2101 };
2102 HeaderFileInfoTrait::data_type Data = {
2103 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2104 };
2105 // FIXME: Deal with cases where there are multiple unresolved header
2106 // directives in different submodules for the same header.
2107 Generator.insert(Key, Data, GeneratorTrait);
2108 ++NumHeaderSearchEntries;
2109 }
2110
2111 Worklist.append(M->submodule_begin(), M->submodule_end());
2112 }
2113 }
2114
2115 SmallVector<const FileEntry *, 16> FilesByUID;
2116 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2117
2118 if (FilesByUID.size() > HS.header_file_size())
3
Assuming the condition is false
4
Taking false branch
2119 FilesByUID.resize(HS.header_file_size());
2120
2121 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
5
Assuming 'UID' is not equal to 'LastUID'
6
Loop condition is true. Entering loop body
2122 const FileEntry *File = FilesByUID[UID];
2123 if (!File)
7
Assuming 'File' is non-null
8
Taking false branch
2124 continue;
2125
2126 // Get the file info. This will load info from the external source if
2127 // necessary. Skip emitting this file if we have no information on it
2128 // as a header file (in which case HFI will be null) or if it hasn't
2129 // changed since it was loaded. Also skip it if it's for a modular header
2130 // from a different module; in that case, we rely on the module(s)
2131 // containing the header to provide this information.
2132 const HeaderFileInfo *HFI =
2133 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
9
Assuming the condition is false
2134 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
10
Assuming 'HFI' is non-null
11
Assuming the condition is false
2135 continue;
2136
2137 // Massage the file path into an appropriate form.
2138 StringRef Filename = File->getName();
2139 SmallString<128> FilenameTmp(Filename);
2140 if (PreparePathForOutput(FilenameTmp)) {
12
Assuming the condition is true
13
Taking true branch
2141 // If we performed any translation on the file name at all, we need to
2142 // save this string, since the generator will refer to it later.
2143 Filename = StringRef(strdup(FilenameTmp.c_str()));
14
Memory is allocated
15
Potential memory leak
2144 SavedStrings.push_back(Filename.data());
2145 }
2146
2147 HeaderFileInfoTrait::key_type Key = {
2148 Filename, File->getSize(), getTimestampForOutput(File)
2149 };
2150 HeaderFileInfoTrait::data_type Data = {
2151 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2152 };
2153 Generator.insert(Key, Data, GeneratorTrait);
2154 ++NumHeaderSearchEntries;
2155 }
2156
2157 // Create the on-disk hash table in a buffer.
2158 SmallString<4096> TableData;
2159 uint32_t BucketOffset;
2160 {
2161 using namespace llvm::support;
2162
2163 llvm::raw_svector_ostream Out(TableData);
2164 // Make sure that no bucket is at offset 0
2165 endian::write<uint32_t>(Out, 0, little);
2166 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2167 }
2168
2169 // Create a blob abbreviation
2170 using namespace llvm;
2171
2172 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2173 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2174 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2175 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2176 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2177 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2178 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2179
2180 // Write the header search table
2181 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2182 NumHeaderSearchEntries, TableData.size()};
2183 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2184 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2185
2186 // Free all of the strings we had to duplicate.
2187 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2188 free(const_cast<char *>(SavedStrings[I]));
2189}
2190
2191static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2192 unsigned SLocBufferBlobCompressedAbbrv,
2193 unsigned SLocBufferBlobAbbrv) {
2194 using RecordDataType = ASTWriter::RecordData::value_type;
2195
2196 // Compress the buffer if possible. We expect that almost all PCM
2197 // consumers will not want its contents.
2198 SmallString<0> CompressedBuffer;
2199 if (llvm::zlib::isAvailable()) {
2200 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2201 if (!E) {
2202 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2203 Blob.size() - 1};
2204 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2205 CompressedBuffer);
2206 return;
2207 }
2208 llvm::consumeError(std::move(E));
2209 }
2210
2211 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2212 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2213}
2214
2215/// Writes the block containing the serialized form of the
2216/// source manager.
2217///
2218/// TODO: We should probably use an on-disk hash table (stored in a
2219/// blob), indexed based on the file name, so that we only create
2220/// entries for files that we actually need. In the common case (no
2221/// errors), we probably won't have to create file entries for any of
2222/// the files in the AST.
2223void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2224 const Preprocessor &PP) {
2225 RecordData Record;
2226
2227 // Enter the source manager block.
2228 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2229
2230 // Abbreviations for the various kinds of source-location entries.
2231 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2232 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2233 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2234 unsigned SLocBufferBlobCompressedAbbrv =
2235 CreateSLocBufferBlobAbbrev(Stream, true);
2236 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2237
2238 // Write out the source location entry table. We skip the first
2239 // entry, which is always the same dummy entry.
2240 std::vector<uint32_t> SLocEntryOffsets;
2241 RecordData PreloadSLocs;
2242 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2243 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2244 I != N; ++I) {
2245 // Get this source location entry.
2246 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2247 FileID FID = FileID::get(I);
2248 assert(&SourceMgr.getSLocEntry(FID) == SLoc)((&SourceMgr.getSLocEntry(FID) == SLoc) ? static_cast<
void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2248, __PRETTY_FUNCTION__))
;
2249
2250 // Record the offset of this source-location entry.
2251 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2252
2253 // Figure out which record code to use.
2254 unsigned Code;
2255 if (SLoc->isFile()) {
2256 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2257 if (Cache->OrigEntry) {
2258 Code = SM_SLOC_FILE_ENTRY;
2259 } else
2260 Code = SM_SLOC_BUFFER_ENTRY;
2261 } else
2262 Code = SM_SLOC_EXPANSION_ENTRY;
2263 Record.clear();
2264 Record.push_back(Code);
2265
2266 // Starting offset of this entry within this module, so skip the dummy.
2267 Record.push_back(SLoc->getOffset() - 2);
2268 if (SLoc->isFile()) {
2269 const SrcMgr::FileInfo &File = SLoc->getFile();
2270 AddSourceLocation(File.getIncludeLoc(), Record);
2271 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2272 Record.push_back(File.hasLineDirectives());
2273
2274 const SrcMgr::ContentCache *Content = File.getContentCache();
2275 bool EmitBlob = false;
2276 if (Content->OrigEntry) {
2277 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2278, __PRETTY_FUNCTION__))
2278 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2278, __PRETTY_FUNCTION__))
;
2279
2280 // The source location entry is a file. Emit input file ID.
2281 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2281, __PRETTY_FUNCTION__))
;
2282 Record.push_back(InputFileIDs[Content->OrigEntry]);
2283
2284 Record.push_back(File.NumCreatedFIDs);
2285
2286 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2287 if (FDI != FileDeclIDs.end()) {
2288 Record.push_back(FDI->second->FirstDeclIndex);
2289 Record.push_back(FDI->second->DeclIDs.size());
2290 } else {
2291 Record.push_back(0);
2292 Record.push_back(0);
2293 }
2294
2295 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2296
2297 if (Content->BufferOverridden || Content->IsTransient)
2298 EmitBlob = true;
2299 } else {
2300 // The source location entry is a buffer. The blob associated
2301 // with this entry contains the contents of the buffer.
2302
2303 // We add one to the size so that we capture the trailing NULL
2304 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2305 // the reader side).
2306 const llvm::MemoryBuffer *Buffer
2307 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2308 StringRef Name = Buffer->getBufferIdentifier();
2309 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2310 StringRef(Name.data(), Name.size() + 1));
2311 EmitBlob = true;
2312
2313 if (Name == "<built-in>")
2314 PreloadSLocs.push_back(SLocEntryOffsets.size());
2315 }
2316
2317 if (EmitBlob) {
2318 // Include the implicit terminating null character in the on-disk buffer
2319 // if we're writing it uncompressed.
2320 const llvm::MemoryBuffer *Buffer =
2321 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2322 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2323 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2324 SLocBufferBlobAbbrv);
2325 }
2326 } else {
2327 // The source location entry is a macro expansion.
2328 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2329 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2330 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2331 AddSourceLocation(Expansion.isMacroArgExpansion()
2332 ? SourceLocation()
2333 : Expansion.getExpansionLocEnd(),
2334 Record);
2335 Record.push_back(Expansion.isExpansionTokenRange());
2336
2337 // Compute the token length for this macro expansion.
2338 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2339 if (I + 1 != N)
2340 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2341 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2342 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2343 }
2344 }
2345
2346 Stream.ExitBlock();
2347
2348 if (SLocEntryOffsets.empty())
2349 return;
2350
2351 // Write the source-location offsets table into the AST block. This
2352 // table is used for lazily loading source-location information.
2353 using namespace llvm;
2354
2355 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2356 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2357 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2358 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2359 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2360 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2361 {
2362 RecordData::value_type Record[] = {
2363 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2364 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2365 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2366 bytes(SLocEntryOffsets));
2367 }
2368 // Write the source location entry preloads array, telling the AST
2369 // reader which source locations entries it should load eagerly.
2370 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2371
2372 // Write the line table. It depends on remapping working, so it must come
2373 // after the source location offsets.
2374 if (SourceMgr.hasLineTable()) {
2375 LineTableInfo &LineTable = SourceMgr.getLineTable();
2376
2377 Record.clear();
2378
2379 // Emit the needed file names.
2380 llvm::DenseMap<int, int> FilenameMap;
2381 FilenameMap[-1] = -1; // For unspecified filenames.
2382 for (const auto &L : LineTable) {
2383 if (L.first.ID < 0)
2384 continue;
2385 for (auto &LE : L.second) {
2386 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2387 FilenameMap.size() - 1)).second)
2388 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2389 }
2390 }
2391 Record.push_back(0);
2392
2393 // Emit the line entries
2394 for (const auto &L : LineTable) {
2395 // Only emit entries for local files.
2396 if (L.first.ID < 0)
2397 continue;
2398
2399 // Emit the file ID
2400 Record.push_back(L.first.ID);
2401
2402 // Emit the line entries
2403 Record.push_back(L.second.size());
2404 for (const auto &LE : L.second) {
2405 Record.push_back(LE.FileOffset);
2406 Record.push_back(LE.LineNo);
2407 Record.push_back(FilenameMap[LE.FilenameID]);
2408 Record.push_back((unsigned)LE.FileKind);
2409 Record.push_back(LE.IncludeOffset);
2410 }
2411 }
2412
2413 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2414 }
2415}
2416
2417//===----------------------------------------------------------------------===//
2418// Preprocessor Serialization
2419//===----------------------------------------------------------------------===//
2420
2421static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2422 const Preprocessor &PP) {
2423 if (MacroInfo *MI = MD->getMacroInfo())
2424 if (MI->isBuiltinMacro())
2425 return true;
2426
2427 if (IsModule) {
2428 SourceLocation Loc = MD->getLocation();
2429 if (Loc.isInvalid())
2430 return true;
2431 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2432 return true;
2433 }
2434
2435 return false;
2436}
2437
2438/// Writes the block containing the serialized form of the
2439/// preprocessor.
2440void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2441 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2442 if (PPRec)
2443 WritePreprocessorDetail(*PPRec);
2444
2445 RecordData Record;
2446 RecordData ModuleMacroRecord;
2447
2448 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2449 if (PP.getCounterValue() != 0) {
2450 RecordData::value_type Record[] = {PP.getCounterValue()};
2451 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2452 }
2453
2454 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2455 assert(!IsModule)((!IsModule) ? static_cast<void> (0) : __assert_fail ("!IsModule"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2455, __PRETTY_FUNCTION__))
;
2456 auto SkipInfo = PP.getPreambleSkipInfo();
2457 if (SkipInfo.hasValue()) {
2458 Record.push_back(true);
2459 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2460 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2461 Record.push_back(SkipInfo->FoundNonSkipPortion);
2462 Record.push_back(SkipInfo->FoundElse);
2463 AddSourceLocation(SkipInfo->ElseLoc, Record);
2464 } else {
2465 Record.push_back(false);
2466 }
2467 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2468 AddSourceLocation(Cond.IfLoc, Record);
2469 Record.push_back(Cond.WasSkipping);
2470 Record.push_back(Cond.FoundNonSkip);
2471 Record.push_back(Cond.FoundElse);
2472 }
2473 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2474 Record.clear();
2475 }
2476
2477 // Enter the preprocessor block.
2478 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2479
2480 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2481 // FIXME: Include a location for the use, and say which one was used.
2482 if (PP.SawDateOrTime())
2483 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2484
2485 // Loop over all the macro directives that are live at the end of the file,
2486 // emitting each to the PP section.
2487
2488 // Construct the list of identifiers with macro directives that need to be
2489 // serialized.
2490 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2491 for (auto &Id : PP.getIdentifierTable())
2492 if (Id.second->hadMacroDefinition() &&
2493 (!Id.second->isFromAST() ||
2494 Id.second->hasChangedSinceDeserialization()))
2495 MacroIdentifiers.push_back(Id.second);
2496 // Sort the set of macro definitions that need to be serialized by the
2497 // name of the macro, to provide a stable ordering.
2498 llvm::sort(MacroIdentifiers, llvm::less_ptr<IdentifierInfo>());
2499
2500 // Emit the macro directives as a list and associate the offset with the
2501 // identifier they belong to.
2502 for (const IdentifierInfo *Name : MacroIdentifiers) {
2503 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2504 auto StartOffset = Stream.GetCurrentBitNo();
2505
2506 // Emit the macro directives in reverse source order.
2507 for (; MD; MD = MD->getPrevious()) {
2508 // Once we hit an ignored macro, we're done: the rest of the chain
2509 // will all be ignored macros.
2510 if (shouldIgnoreMacro(MD, IsModule, PP))
2511 break;
2512
2513 AddSourceLocation(MD->getLocation(), Record);
2514 Record.push_back(MD->getKind());
2515 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2516 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2517 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2518 Record.push_back(VisMD->isPublic());
2519 }
2520 }
2521
2522 // Write out any exported module macros.
2523 bool EmittedModuleMacros = false;
2524 // We write out exported module macros for PCH as well.
2525 auto Leafs = PP.getLeafModuleMacros(Name);
2526 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2527 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2528 while (!Worklist.empty()) {
2529 auto *Macro = Worklist.pop_back_val();
2530
2531 // Emit a record indicating this submodule exports this macro.
2532 ModuleMacroRecord.push_back(
2533 getSubmoduleID(Macro->getOwningModule()));
2534 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2535 for (auto *M : Macro->overrides())
2536 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2537
2538 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2539 ModuleMacroRecord.clear();
2540
2541 // Enqueue overridden macros once we've visited all their ancestors.
2542 for (auto *M : Macro->overrides())
2543 if (++Visits[M] == M->getNumOverridingMacros())
2544 Worklist.push_back(M);
2545
2546 EmittedModuleMacros = true;
2547 }
2548
2549 if (Record.empty() && !EmittedModuleMacros)
2550 continue;
2551
2552 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2553 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2554 Record.clear();
2555 }
2556
2557 /// Offsets of each of the macros into the bitstream, indexed by
2558 /// the local macro ID
2559 ///
2560 /// For each identifier that is associated with a macro, this map
2561 /// provides the offset into the bitstream where that macro is
2562 /// defined.
2563 std::vector<uint32_t> MacroOffsets;
2564
2565 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2566 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2567 MacroInfo *MI = MacroInfosToEmit[I].MI;
2568 MacroID ID = MacroInfosToEmit[I].ID;
2569
2570 if (ID < FirstMacroID) {
2571 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2571, __PRETTY_FUNCTION__))
;
2572 continue;
2573 }
2574
2575 // Record the local offset of this macro.
2576 unsigned Index = ID - FirstMacroID;
2577 if (Index == MacroOffsets.size())
2578 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2579 else {
2580 if (Index > MacroOffsets.size())
2581 MacroOffsets.resize(Index + 1);
2582
2583 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2584 }
2585
2586 AddIdentifierRef(Name, Record);
2587 AddSourceLocation(MI->getDefinitionLoc(), Record);
2588 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2589 Record.push_back(MI->isUsed());
2590 Record.push_back(MI->isUsedForHeaderGuard());
2591 unsigned Code;
2592 if (MI->isObjectLike()) {
2593 Code = PP_MACRO_OBJECT_LIKE;
2594 } else {
2595 Code = PP_MACRO_FUNCTION_LIKE;
2596
2597 Record.push_back(MI->isC99Varargs());
2598 Record.push_back(MI->isGNUVarargs());
2599 Record.push_back(MI->hasCommaPasting());
2600 Record.push_back(MI->getNumParams());
2601 for (const IdentifierInfo *Param : MI->params())
2602 AddIdentifierRef(Param, Record);
2603 }
2604
2605 // If we have a detailed preprocessing record, record the macro definition
2606 // ID that corresponds to this macro.
2607 if (PPRec)
2608 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2609
2610 Stream.EmitRecord(Code, Record);
2611 Record.clear();
2612
2613 // Emit the tokens array.
2614 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2615 // Note that we know that the preprocessor does not have any annotation
2616 // tokens in it because they are created by the parser, and thus can't
2617 // be in a macro definition.
2618 const Token &Tok = MI->getReplacementToken(TokNo);
2619 AddToken(Tok, Record);
2620 Stream.EmitRecord(PP_TOKEN, Record);
2621 Record.clear();
2622 }
2623 ++NumMacros;
2624 }
2625
2626 Stream.ExitBlock();
2627
2628 // Write the offsets table for macro IDs.
2629 using namespace llvm;
2630
2631 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2632 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2633 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2634 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2635 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2636
2637 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2638 {
2639 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2640 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2641 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2642 }
2643}
2644
2645void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2646 if (PPRec.local_begin() == PPRec.local_end())
2647 return;
2648
2649 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2650
2651 // Enter the preprocessor block.
2652 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2653
2654 // If the preprocessor has a preprocessing record, emit it.
2655 unsigned NumPreprocessingRecords = 0;
2656 using namespace llvm;
2657
2658 // Set up the abbreviation for
2659 unsigned InclusionAbbrev = 0;
2660 {
2661 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2662 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2663 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2664 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2665 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2667 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2668 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2669 }
2670
2671 unsigned FirstPreprocessorEntityID
2672 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2673 + NUM_PREDEF_PP_ENTITY_IDS;
2674 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2675 RecordData Record;
2676 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2677 EEnd = PPRec.local_end();
2678 E != EEnd;
2679 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2680 Record.clear();
2681
2682 PreprocessedEntityOffsets.push_back(
2683 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2684
2685 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2686 // Record this macro definition's ID.
2687 MacroDefinitions[MD] = NextPreprocessorEntityID;
2688
2689 AddIdentifierRef(MD->getName(), Record);
2690 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2691 continue;
2692 }
2693
2694 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2695 Record.push_back(ME->isBuiltinMacro());
2696 if (ME->isBuiltinMacro())
2697 AddIdentifierRef(ME->getName(), Record);
2698 else
2699 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2700 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2701 continue;
2702 }
2703
2704 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2705 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2706 Record.push_back(ID->getFileName().size());
2707 Record.push_back(ID->wasInQuotes());
2708 Record.push_back(static_cast<unsigned>(ID->getKind()));
2709 Record.push_back(ID->importedModule());
2710 SmallString<64> Buffer;
2711 Buffer += ID->getFileName();
2712 // Check that the FileEntry is not null because it was not resolved and
2713 // we create a PCH even with compiler errors.
2714 if (ID->getFile())
2715 Buffer += ID->getFile()->getName();
2716 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2717 continue;
2718 }
2719
2720 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2720)
;
2721 }
2722 Stream.ExitBlock();
2723
2724 // Write the offsets table for the preprocessing record.
2725 if (NumPreprocessingRecords > 0) {
2726 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)((PreprocessedEntityOffsets.size() == NumPreprocessingRecords
) ? static_cast<void> (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2726, __PRETTY_FUNCTION__))
;
2727
2728 // Write the offsets table for identifier IDs.
2729 using namespace llvm;
2730
2731 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2732 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2733 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2734 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2735 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2736
2737 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2738 FirstPreprocessorEntityID -
2739 NUM_PREDEF_PP_ENTITY_IDS};
2740 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2741 bytes(PreprocessedEntityOffsets));
2742 }
2743
2744 // Write the skipped region table for the preprocessing record.
2745 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2746 if (SkippedRanges.size() > 0) {
2747 std::vector<PPSkippedRange> SerializedSkippedRanges;
2748 SerializedSkippedRanges.reserve(SkippedRanges.size());
2749 for (auto const& Range : SkippedRanges)
2750 SerializedSkippedRanges.emplace_back(Range);
2751
2752 using namespace llvm;
2753 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2754 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2755 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2756 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2757
2758 Record.clear();
2759 Record.push_back(PPD_SKIPPED_RANGES);
2760 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2761 bytes(SerializedSkippedRanges));
2762 }
2763}
2764
2765unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2766 if (!Mod)
2767 return 0;
2768
2769 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2770 if (Known != SubmoduleIDs.end())
2771 return Known->second;
2772
2773 auto *Top = Mod->getTopLevelModule();
2774 if (Top != WritingModule &&
2775 (getLangOpts().CompilingPCH ||
2776 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2777 return 0;
2778
2779 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2780}
2781
2782unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2783 // FIXME: This can easily happen, if we have a reference to a submodule that
2784 // did not result in us loading a module file for that submodule. For
2785 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2786 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2787 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2788, __PRETTY_FUNCTION__))
2788 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2788, __PRETTY_FUNCTION__))
;
2789 return ID;
2790}
2791
2792/// Compute the number of modules within the given tree (including the
2793/// given module).
2794static unsigned getNumberOfModules(Module *Mod) {
2795 unsigned ChildModules = 0;
2796 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2797 Sub != SubEnd; ++Sub)
2798 ChildModules += getNumberOfModules(*Sub);
2799
2800 return ChildModules + 1;
2801}
2802
2803void ASTWriter::WriteSubmodules(Module *WritingModule) {
2804 // Enter the submodule description block.
2805 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2806
2807 // Write the abbreviations needed for the submodules block.
2808 using namespace llvm;
2809
2810 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2811 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2812 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2813 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2814 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2815 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2816 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2817 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2818 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2819 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2820 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2821 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2822 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2823 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2824 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2825 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2826
2827 Abbrev = std::make_shared<BitCodeAbbrev>();
2828 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2829 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2830 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2831
2832 Abbrev = std::make_shared<BitCodeAbbrev>();
2833 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2834 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2835 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2836
2837 Abbrev = std::make_shared<BitCodeAbbrev>();
2838 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2839 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2840 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2841
2842 Abbrev = std::make_shared<BitCodeAbbrev>();
2843 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2844 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2845 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2846
2847 Abbrev = std::make_shared<BitCodeAbbrev>();
2848 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2849 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2850 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2851 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2852
2853 Abbrev = std::make_shared<BitCodeAbbrev>();
2854 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2855 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2856 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2857
2858 Abbrev = std::make_shared<BitCodeAbbrev>();
2859 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2860 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2861 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2862
2863 Abbrev = std::make_shared<BitCodeAbbrev>();
2864 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2865 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2866 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2867
2868 Abbrev = std::make_shared<BitCodeAbbrev>();
2869 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2870 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2871 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2872
2873 Abbrev = std::make_shared<BitCodeAbbrev>();
2874 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2876 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2877 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2878
2879 Abbrev = std::make_shared<BitCodeAbbrev>();
2880 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2881 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2882 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2883
2884 Abbrev = std::make_shared<BitCodeAbbrev>();
2885 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2886 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2887 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2888 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2889
2890 Abbrev = std::make_shared<BitCodeAbbrev>();
2891 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2892 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2893 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2894
2895 // Write the submodule metadata block.
2896 RecordData::value_type Record[] = {
2897 getNumberOfModules(WritingModule),
2898 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2899 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2900
2901 // Write all of the submodules.
2902 std::queue<Module *> Q;
2903 Q.push(WritingModule);
2904 while (!Q.empty()) {
2905 Module *Mod = Q.front();
2906 Q.pop();
2907 unsigned ID = getSubmoduleID(Mod);
2908
2909 uint64_t ParentID = 0;
2910 if (Mod->Parent) {
2911 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2911, __PRETTY_FUNCTION__))
;
2912 ParentID = SubmoduleIDs[Mod->Parent];
2913 }
2914
2915 // Emit the definition of the block.
2916 {
2917 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2918 ID,
2919 ParentID,
2920 (RecordData::value_type)Mod->Kind,
2921 Mod->IsFramework,
2922 Mod->IsExplicit,
2923 Mod->IsSystem,
2924 Mod->IsExternC,
2925 Mod->InferSubmodules,
2926 Mod->InferExplicitSubmodules,
2927 Mod->InferExportWildcard,
2928 Mod->ConfigMacrosExhaustive,
2929 Mod->ModuleMapIsPrivate};
2930 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2931 }
2932
2933 // Emit the requirements.
2934 for (const auto &R : Mod->Requirements) {
2935 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2936 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2937 }
2938
2939 // Emit the umbrella header, if there is one.
2940 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2941 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2942 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2943 UmbrellaHeader.NameAsWritten);
2944 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2945 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2946 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2947 UmbrellaDir.NameAsWritten);
2948 }
2949
2950 // Emit the headers.
2951 struct {
2952 unsigned RecordKind;
2953 unsigned Abbrev;
2954 Module::HeaderKind HeaderKind;
2955 } HeaderLists[] = {
2956 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2957 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2958 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2959 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2960 Module::HK_PrivateTextual},
2961 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2962 };
2963 for (auto &HL : HeaderLists) {
2964 RecordData::value_type Record[] = {HL.RecordKind};
2965 for (auto &H : Mod->Headers[HL.HeaderKind])
2966 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2967 }
2968
2969 // Emit the top headers.
2970 {
2971 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2972 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2973 for (auto *H : TopHeaders)
2974 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2975 }
2976
2977 // Emit the imports.
2978 if (!Mod->Imports.empty()) {
2979 RecordData Record;
2980 for (auto *I : Mod->Imports)
2981 Record.push_back(getSubmoduleID(I));
2982 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2983 }
2984
2985 // Emit the exports.
2986 if (!Mod->Exports.empty()) {
2987 RecordData Record;
2988 for (const auto &E : Mod->Exports) {
2989 // FIXME: This may fail; we don't require that all exported modules
2990 // are local or imported.
2991 Record.push_back(getSubmoduleID(E.getPointer()));
2992 Record.push_back(E.getInt());
2993 }
2994 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2995 }
2996
2997 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2998 // Might be unnecessary as use declarations are only used to build the
2999 // module itself.
3000
3001 // Emit the link libraries.
3002 for (const auto &LL : Mod->LinkLibraries) {
3003 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
3004 LL.IsFramework};
3005 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
3006 }
3007
3008 // Emit the conflicts.
3009 for (const auto &C : Mod->Conflicts) {
3010 // FIXME: This may fail; we don't require that all conflicting modules
3011 // are local or imported.
3012 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3013 getSubmoduleID(C.Other)};
3014 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3015 }
3016
3017 // Emit the configuration macros.
3018 for (const auto &CM : Mod->ConfigMacros) {
3019 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3020 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3021 }
3022
3023 // Emit the initializers, if any.
3024 RecordData Inits;
3025 for (Decl *D : Context->getModuleInitializers(Mod))
3026 Inits.push_back(GetDeclRef(D));
3027 if (!Inits.empty())
3028 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3029
3030 // Emit the name of the re-exported module, if any.
3031 if (!Mod->ExportAsModule.empty()) {
3032 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3033 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3034 }
3035
3036 // Queue up the submodules of this module.
3037 for (auto *M : Mod->submodules())
3038 Q.push(M);
3039 }
3040
3041 Stream.ExitBlock();
3042
3043 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3046, __PRETTY_FUNCTION__))
3044 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3046, __PRETTY_FUNCTION__))
3045 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3046, __PRETTY_FUNCTION__))
3046 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3046, __PRETTY_FUNCTION__))
;
3047}
3048
3049void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3050 bool isModule) {
3051 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3052 DiagStateIDMap;
3053 unsigned CurrID = 0;
3054 RecordData Record;
3055
3056 auto EncodeDiagStateFlags =
3057 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3058 unsigned Result = (unsigned)DS->ExtBehavior;
3059 for (unsigned Val :
3060 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3061 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3062 (unsigned)DS->SuppressSystemWarnings})
3063 Result = (Result << 1) | Val;
3064 return Result;
3065 };
3066
3067 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3068 Record.push_back(Flags);
3069
3070 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3071 bool IncludeNonPragmaStates) {
3072 // Ensure that the diagnostic state wasn't modified since it was created.
3073 // We will not correctly round-trip this information otherwise.
3074 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3075, __PRETTY_FUNCTION__))
3075 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3075, __PRETTY_FUNCTION__))
;
3076
3077 unsigned &DiagStateID = DiagStateIDMap[State];
3078 Record.push_back(DiagStateID);
3079
3080 if (DiagStateID == 0) {
3081 DiagStateID = ++CurrID;
3082
3083 // Add a placeholder for the number of mappings.
3084 auto SizeIdx = Record.size();
3085 Record.emplace_back();
3086 for (const auto &I : *State) {
3087 if (I.second.isPragma() || IncludeNonPragmaStates) {
3088 Record.push_back(I.first);
3089 Record.push_back(I.second.serialize());
3090 }
3091 }
3092 // Update the placeholder.
3093 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3094 }
3095 };
3096
3097 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3098
3099 // Reserve a spot for the number of locations with state transitions.
3100 auto NumLocationsIdx = Record.size();
3101 Record.emplace_back();
3102
3103 // Emit the state transitions.
3104 unsigned NumLocations = 0;
3105 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3106 if (!FileIDAndFile.first.isValid() ||
3107 !FileIDAndFile.second.HasLocalTransitions)
3108 continue;
3109 ++NumLocations;
3110
3111 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3112 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3112, __PRETTY_FUNCTION__))
;
3113 AddSourceLocation(Loc, Record);
3114
3115 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3116 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3117 Record.push_back(StatePoint.Offset);
3118 AddDiagState(StatePoint.State, false);
3119 }
3120 }
3121
3122 // Backpatch the number of locations.
3123 Record[NumLocationsIdx] = NumLocations;
3124
3125 // Emit CurDiagStateLoc. Do it last in order to match source order.
3126 //
3127 // This also protects against a hypothetical corner case with simulating
3128 // -Werror settings for implicit modules in the ASTReader, where reading
3129 // CurDiagState out of context could change whether warning pragmas are
3130 // treated as errors.
3131 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3132 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3133
3134 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3135}
3136
3137//===----------------------------------------------------------------------===//
3138// Type Serialization
3139//===----------------------------------------------------------------------===//
3140
3141/// Write the representation of a type to the AST stream.
3142void ASTWriter::WriteType(QualType T) {
3143 TypeIdx &IdxRef = TypeIdxs[T];
3144 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3145 IdxRef = TypeIdx(NextTypeID++);
3146 TypeIdx Idx = IdxRef;
3147
3148 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3148, __PRETTY_FUNCTION__))
;
3149
3150 RecordData Record;
3151
3152 // Emit the type's representation.
3153 ASTTypeWriter W(*this, Record);
3154 W.Visit(T);
3155 uint64_t Offset = W.Emit();
3156
3157 // Record the offset for this type.
3158 unsigned Index = Idx.getIndex() - FirstTypeID;
3159 if (TypeOffsets.size() == Index)
3160 TypeOffsets.push_back(Offset);
3161 else if (TypeOffsets.size() < Index) {
3162 TypeOffsets.resize(Index + 1);
3163 TypeOffsets[Index] = Offset;
3164 } else {
3165 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3165)
;
3166 }
3167}
3168
3169//===----------------------------------------------------------------------===//
3170// Declaration Serialization
3171//===----------------------------------------------------------------------===//
3172
3173/// Write the block containing all of the declaration IDs
3174/// lexically declared within the given DeclContext.
3175///
3176/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3177/// bitstream, or 0 if no block was written.
3178uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3179 DeclContext *DC) {
3180 if (DC->decls_empty())
3181 return 0;
3182
3183 uint64_t Offset = Stream.GetCurrentBitNo();
3184 SmallVector<uint32_t, 128> KindDeclPairs;
3185 for (const auto *D : DC->decls()) {
3186 KindDeclPairs.push_back(D->getKind());
3187 KindDeclPairs.push_back(GetDeclRef(D));
3188 }
3189
3190 ++NumLexicalDeclContexts;
3191 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3192 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3193 bytes(KindDeclPairs));
3194 return Offset;
3195}
3196
3197void ASTWriter::WriteTypeDeclOffsets() {
3198 using namespace llvm;
3199
3200 // Write the type offsets array
3201 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3202 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3204 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3205 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3206 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3207 {
3208 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3209 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3210 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3211 }
3212
3213 // Write the declaration offsets array
3214 Abbrev = std::make_shared<BitCodeAbbrev>();
3215 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3217 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3218 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3219 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3220 {
3221 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3222 FirstDeclID - NUM_PREDEF_DECL_IDS};
3223 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3224 }
3225}
3226
3227void ASTWriter::WriteFileDeclIDsMap() {
3228 using namespace llvm;
3229
3230 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3231 FileDeclIDs.begin(), FileDeclIDs.end());
3232 llvm::sort(SortedFileDeclIDs, llvm::less_first());
3233
3234 // Join the vectors of DeclIDs from all files.
3235 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3236 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3237 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3238 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3239 for (auto &LocDeclEntry : Info.DeclIDs)
3240 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3241 }
3242
3243 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3244 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3245 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3246 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3247 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3248 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3249 FileGroupedDeclIDs.size()};
3250 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3251}
3252
3253void ASTWriter::WriteComments() {
3254 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3255 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3256 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3257 return;
3258 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3259 RecordData Record;
3260 for (const auto *I : RawComments) {
3261 Record.clear();
3262 AddSourceRange(I->getSourceRange(), Record);
3263 Record.push_back(I->getKind());
3264 Record.push_back(I->isTrailingComment());
3265 Record.push_back(I->isAlmostTrailingComment());
3266 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3267 }
3268}
3269
3270//===----------------------------------------------------------------------===//
3271// Global Method Pool and Selector Serialization
3272//===----------------------------------------------------------------------===//
3273
3274namespace {
3275
3276// Trait used for the on-disk hash table used in the method pool.
3277class ASTMethodPoolTrait {
3278 ASTWriter &Writer;
3279
3280public:
3281 using key_type = Selector;
3282 using key_type_ref = key_type;
3283
3284 struct data_type {
3285 SelectorID ID;
3286 ObjCMethodList Instance, Factory;
3287 };
3288 using data_type_ref = const data_type &;
3289
3290 using hash_value_type = unsigned;
3291 using offset_type = unsigned;
3292
3293 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3294
3295 static hash_value_type ComputeHash(Selector Sel) {
3296 return serialization::ComputeHash(Sel);
3297 }
3298
3299 std::pair<unsigned, unsigned>
3300 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3301 data_type_ref Methods) {
3302 using namespace llvm::support;
3303
3304 endian::Writer LE(Out, little);
3305 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3306 LE.write<uint16_t>(KeyLen);
3307 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3308 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3309 Method = Method->getNext())
3310 if (Method->getMethod())
3311 DataLen += 4;
3312 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3313 Method = Method->getNext())
3314 if (Method->getMethod())
3315 DataLen += 4;
3316 LE.write<uint16_t>(DataLen);
3317 return std::make_pair(KeyLen, DataLen);
3318 }
3319
3320 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3321 using namespace llvm::support;
3322
3323 endian::Writer LE(Out, little);
3324 uint64_t Start = Out.tell();
3325 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3325, __PRETTY_FUNCTION__))
;
3326 Writer.SetSelectorOffset(Sel, Start);
3327 unsigned N = Sel.getNumArgs();
3328 LE.write<uint16_t>(N);
3329 if (N == 0)
3330 N = 1;
3331 for (unsigned I = 0; I != N; ++I)
3332 LE.write<uint32_t>(
3333 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3334 }
3335
3336 void EmitData(raw_ostream& Out, key_type_ref,
3337 data_type_ref Methods, unsigned DataLen) {
3338 using namespace llvm::support;
3339
3340 endian::Writer LE(Out, little);
3341 uint64_t Start = Out.tell(); (void)Start;
3342 LE.write<uint32_t>(Methods.ID);
3343 unsigned NumInstanceMethods = 0;
3344 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3345 Method = Method->getNext())
3346 if (Method->getMethod())
3347 ++NumInstanceMethods;
3348
3349 unsigned NumFactoryMethods = 0;
3350 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3351 Method = Method->getNext())
3352 if (Method->getMethod())
3353 ++NumFactoryMethods;
3354
3355 unsigned InstanceBits = Methods.Instance.getBits();
3356 assert(InstanceBits < 4)((InstanceBits < 4) ? static_cast<void> (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3356, __PRETTY_FUNCTION__))
;
3357 unsigned InstanceHasMoreThanOneDeclBit =
3358 Methods.Instance.hasMoreThanOneDecl();
3359 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3360 (InstanceHasMoreThanOneDeclBit << 2) |
3361 InstanceBits;
3362 unsigned FactoryBits = Methods.Factory.getBits();
3363 assert(FactoryBits < 4)((FactoryBits < 4) ? static_cast<void> (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3363, __PRETTY_FUNCTION__))
;
3364 unsigned FactoryHasMoreThanOneDeclBit =
3365 Methods.Factory.hasMoreThanOneDecl();
3366 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3367 (FactoryHasMoreThanOneDeclBit << 2) |
3368 FactoryBits;
3369 LE.write<uint16_t>(FullInstanceBits);
3370 LE.write<uint16_t>(FullFactoryBits);
3371 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3372 Method = Method->getNext())
3373 if (Method->getMethod())
3374 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3375 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3376 Method = Method->getNext())
3377 if (Method->getMethod())
3378 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3379
3380 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3380, __PRETTY_FUNCTION__))
;
3381 }
3382};
3383
3384} // namespace
3385
3386/// Write ObjC data: selectors and the method pool.
3387///
3388/// The method pool contains both instance and factory methods, stored
3389/// in an on-disk hash table indexed by the selector. The hash table also
3390/// contains an empty entry for every other selector known to Sema.
3391void ASTWriter::WriteSelectors(Sema &SemaRef) {
3392 using namespace llvm;
3393
3394 // Do we have to do anything at all?
3395 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3396 return;
3397 unsigned NumTableEntries = 0;
3398 // Create and write out the blob that contains selectors and the method pool.
3399 {
3400 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3401 ASTMethodPoolTrait Trait(*this);
3402
3403 // Create the on-disk hash table representation. We walk through every
3404 // selector we've seen and look it up in the method pool.
3405 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3406 for (auto &SelectorAndID : SelectorIDs) {
3407 Selector S = SelectorAndID.first;
3408 SelectorID ID = SelectorAndID.second;
3409 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3410 ASTMethodPoolTrait::data_type Data = {
3411 ID,
3412 ObjCMethodList(),
3413 ObjCMethodList()
3414 };
3415 if (F != SemaRef.MethodPool.end()) {
3416 Data.Instance = F->second.first;
3417 Data.Factory = F->second.second;
3418 }
3419 // Only write this selector if it's not in an existing AST or something
3420 // changed.
3421 if (Chain && ID < FirstSelectorID) {
3422 // Selector already exists. Did it change?
3423 bool changed = false;
3424 for (ObjCMethodList *M = &Data.Instance;
3425 !changed && M && M->getMethod(); M = M->getNext()) {
3426 if (!M->getMethod()->isFromASTFile())
3427 changed = true;
3428 }
3429 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3430 M = M->getNext()) {
3431 if (!M->getMethod()->isFromASTFile())
3432 changed = true;
3433 }
3434 if (!changed)
3435 continue;
3436 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3437 // A new method pool entry.
3438 ++NumTableEntries;
3439 }
3440 Generator.insert(S, Data, Trait);
3441 }
3442
3443 // Create the on-disk hash table in a buffer.
3444 SmallString<4096> MethodPool;
3445 uint32_t BucketOffset;
3446 {
3447 using namespace llvm::support;
3448
3449 ASTMethodPoolTrait Trait(*this);
3450 llvm::raw_svector_ostream Out(MethodPool);
3451 // Make sure that no bucket is at offset 0
3452 endian::write<uint32_t>(Out, 0, little);
3453 BucketOffset = Generator.Emit(Out, Trait);
3454 }
3455
3456 // Create a blob abbreviation
3457 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3458 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3459 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3460 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3461 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3462 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3463
3464 // Write the method pool
3465 {
3466 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3467 NumTableEntries};
3468 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3469 }
3470
3471 // Create a blob abbreviation for the selector table offsets.
3472 Abbrev = std::make_shared<BitCodeAbbrev>();
3473 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3474 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3476 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3477 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3478
3479 // Write the selector offsets table.
3480 {
3481 RecordData::value_type Record[] = {
3482 SELECTOR_OFFSETS, SelectorOffsets.size(),
3483 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3484 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3485 bytes(SelectorOffsets));
3486 }
3487 }
3488}
3489
3490/// Write the selectors referenced in @selector expression into AST file.
3491void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3492 using namespace llvm;
3493
3494 if (SemaRef.ReferencedSelectors.empty())
3495 return;
3496
3497 RecordData Record;
3498 ASTRecordWriter Writer(*this, Record);
3499
3500 // Note: this writes out all references even for a dependent AST. But it is
3501 // very tricky to fix, and given that @selector shouldn't really appear in
3502 // headers, probably not worth it. It's not a correctness issue.
3503 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3504 Selector Sel = SelectorAndLocation.first;
3505 SourceLocation Loc = SelectorAndLocation.second;
3506 Writer.AddSelectorRef(Sel);
3507 Writer.AddSourceLocation(Loc);
3508 }
3509 Writer.Emit(REFERENCED_SELECTOR_POOL);
3510}
3511
3512//===----------------------------------------------------------------------===//
3513// Identifier Table Serialization
3514//===----------------------------------------------------------------------===//
3515
3516/// Determine the declaration that should be put into the name lookup table to
3517/// represent the given declaration in this module. This is usually D itself,
3518/// but if D was imported and merged into a local declaration, we want the most
3519/// recent local declaration instead. The chosen declaration will be the most
3520/// recent declaration in any module that imports this one.
3521static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3522 NamedDecl *D) {
3523 if (!LangOpts.Modules || !D->isFromASTFile())
3524 return D;
3525
3526 if (Decl *Redecl = D->getPreviousDecl()) {
3527 // For Redeclarable decls, a prior declaration might be local.
3528 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3529 // If we find a local decl, we're done.
3530 if (!Redecl->isFromASTFile()) {
3531 // Exception: in very rare cases (for injected-class-names), not all
3532 // redeclarations are in the same semantic context. Skip ones in a
3533 // different context. They don't go in this lookup table at all.
3534 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3535 D->getDeclContext()->getRedeclContext()))
3536 continue;
3537 return cast<NamedDecl>(Redecl);
3538 }
3539
3540 // If we find a decl from a (chained-)PCH stop since we won't find a
3541 // local one.
3542 if (Redecl->getOwningModuleID() == 0)
3543 break;
3544 }
3545 } else if (Decl *First = D->getCanonicalDecl()) {
3546 // For Mergeable decls, the first decl might be local.
3547 if (!First->isFromASTFile())
3548 return cast<NamedDecl>(First);
3549 }
3550
3551 // All declarations are imported. Our most recent declaration will also be
3552 // the most recent one in anyone who imports us.
3553 return D;
3554}
3555
3556namespace {
3557
3558class ASTIdentifierTableTrait {
3559 ASTWriter &Writer;
3560 Preprocessor &PP;
3561 IdentifierResolver &IdResolver;
3562 bool IsModule;
3563 bool NeedDecls;
3564 ASTWriter::RecordData *InterestingIdentifierOffsets;
3565
3566 /// Determines whether this is an "interesting" identifier that needs a
3567 /// full IdentifierInfo structure written into the hash table. Notably, this
3568 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3569 /// to check that.
3570 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3571 if (MacroOffset ||
3572 II->isPoisoned() ||
3573 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3574 II->hasRevertedTokenIDToIdentifier() ||
3575 (NeedDecls && II->getFETokenInfo()))
3576 return true;
3577
3578 return false;
3579 }
3580
3581public:
3582 using key_type = IdentifierInfo *;
3583 using key_type_ref = key_type;
3584
3585 using data_type = IdentID;
3586 using data_type_ref = data_type;
3587
3588 using hash_value_type = unsigned;
3589 using offset_type = unsigned;
3590
3591 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3592 IdentifierResolver &IdResolver, bool IsModule,
3593 ASTWriter::RecordData *InterestingIdentifierOffsets)
3594 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3595 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3596 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3597
3598 bool needDecls() const { return NeedDecls; }
3599
3600 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3601 return llvm::djbHash(II->getName());
3602 }
3603
3604 bool isInterestingIdentifier(const IdentifierInfo *II) {
3605 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3606 return isInterestingIdentifier(II, MacroOffset);
3607 }
3608
3609 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3610 return isInterestingIdentifier(II, 0);
3611 }
3612
3613 std::pair<unsigned, unsigned>
3614 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3615 unsigned KeyLen = II->getLength() + 1;
3616 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3617 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3618 if (isInterestingIdentifier(II, MacroOffset)) {
3619 DataLen += 2; // 2 bytes for builtin ID
3620 DataLen += 2; // 2 bytes for flags
3621 if (MacroOffset)
3622 DataLen += 4; // MacroDirectives offset.
3623
3624 if (NeedDecls) {
3625 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3626 DEnd = IdResolver.end();
3627 D != DEnd; ++D)
3628 DataLen += 4;
3629 }
3630 }
3631
3632 using namespace llvm::support;
3633
3634 endian::Writer LE(Out, little);
3635
3636 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3636, __PRETTY_FUNCTION__))
;
3637 LE.write<uint16_t>(DataLen);
3638 // We emit the key length after the data length so that every
3639 // string is preceded by a 16-bit length. This matches the PTH
3640 // format for storing identifiers.
3641 LE.write<uint16_t>(KeyLen);
3642 return std::make_pair(KeyLen, DataLen);
3643 }
3644
3645 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3646 unsigned KeyLen) {
3647 // Record the location of the key data. This is used when generating
3648 // the mapping from persistent IDs to strings.
3649 Writer.SetIdentifierOffset(II, Out.tell());
3650
3651 // Emit the offset of the key/data length information to the interesting
3652 // identifiers table if necessary.
3653 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3654 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3655
3656 Out.write(II->getNameStart(), KeyLen);
3657 }
3658
3659 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3660 IdentID ID, unsigned) {
3661 using namespace llvm::support;
3662
3663 endian::Writer LE(Out, little);
3664
3665 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3666 if (!isInterestingIdentifier(II, MacroOffset)) {
3667 LE.write<uint32_t>(ID << 1);
3668 return;
3669 }
3670
3671 LE.write<uint32_t>((ID << 1) | 0x01);
3672 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3673 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3673, __PRETTY_FUNCTION__))
;
3674 LE.write<uint16_t>(Bits);
3675 Bits = 0;
3676 bool HadMacroDefinition = MacroOffset != 0;
3677 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3678 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3679 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3680 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3681 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3682 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3683 LE.write<uint16_t>(Bits);
3684
3685 if (HadMacroDefinition)
3686 LE.write<uint32_t>(MacroOffset);
3687
3688 if (NeedDecls) {
3689 // Emit the declaration IDs in reverse order, because the
3690 // IdentifierResolver provides the declarations as they would be
3691 // visible (e.g., the function "stat" would come before the struct
3692 // "stat"), but the ASTReader adds declarations to the end of the list
3693 // (so we need to see the struct "stat" before the function "stat").
3694 // Only emit declarations that aren't from a chained PCH, though.
3695 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3696 IdResolver.end());
3697 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3698 DEnd = Decls.rend();
3699 D != DEnd; ++D)
3700 LE.write<uint32_t>(
3701 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3702 }
3703 }
3704};
3705
3706} // namespace
3707
3708/// Write the identifier table into the AST file.
3709///
3710/// The identifier table consists of a blob containing string data
3711/// (the actual identifiers themselves) and a separate "offsets" index
3712/// that maps identifier IDs to locations within the blob.
3713void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3714 IdentifierResolver &IdResolver,
3715 bool IsModule) {
3716 using namespace llvm;
3717
3718 RecordData InterestingIdents;
3719
3720 // Create and write out the blob that contains the identifier
3721 // strings.
3722 {
3723 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3724 ASTIdentifierTableTrait Trait(
3725 *this, PP, IdResolver, IsModule,
3726 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3727
3728 // Look for any identifiers that were named while processing the
3729 // headers, but are otherwise not needed. We add these to the hash
3730 // table to enable checking of the predefines buffer in the case
3731 // where the user adds new macro definitions when building the AST
3732 // file.
3733 SmallVector<const IdentifierInfo *, 128> IIs;
3734 for (const auto &ID : PP.getIdentifierTable())
3735 IIs.push_back(ID.second);
3736 // Sort the identifiers lexicographically before getting them references so
3737 // that their order is stable.
3738 llvm::sort(IIs, llvm::less_ptr<IdentifierInfo>());
3739 for (const IdentifierInfo *II : IIs)
3740 if (Trait.isInterestingNonMacroIdentifier(II))
3741 getIdentifierRef(II);
3742
3743 // Create the on-disk hash table representation. We only store offsets
3744 // for identifiers that appear here for the first time.
3745 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3746 for (auto IdentIDPair : IdentifierIDs) {
3747 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3748 IdentID ID = IdentIDPair.second;
3749 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3749, __PRETTY_FUNCTION__))
;
3750 // Write out identifiers if either the ID is local or the identifier has
3751 // changed since it was loaded.
3752 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3753 || II->hasChangedSinceDeserialization() ||
3754 (Trait.needDecls() &&
3755 II->hasFETokenInfoChangedSinceDeserialization()))
3756 Generator.insert(II, ID, Trait);
3757 }
3758
3759 // Create the on-disk hash table in a buffer.
3760 SmallString<4096> IdentifierTable;
3761 uint32_t BucketOffset;
3762 {
3763 using namespace llvm::support;
3764
3765 llvm::raw_svector_ostream Out(IdentifierTable);
3766 // Make sure that no bucket is at offset 0
3767 endian::write<uint32_t>(Out, 0, little);
3768 BucketOffset = Generator.Emit(Out, Trait);
3769 }
3770
3771 // Create a blob abbreviation
3772 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3773 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3774 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3775 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3776 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3777
3778 // Write the identifier table
3779 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3780 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3781 }
3782
3783 // Write the offsets table for identifier IDs.
3784 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3785 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3786 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3787 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3788 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3789 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3790
3791#ifndef NDEBUG
3792 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3793 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3793, __PRETTY_FUNCTION__))
;
3794#endif
3795
3796 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3797 IdentifierOffsets.size(),
3798 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3799 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3800 bytes(IdentifierOffsets));
3801
3802 // In C++, write the list of interesting identifiers (those that are
3803 // defined as macros, poisoned, or similar unusual things).
3804 if (!InterestingIdents.empty())
3805 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3806}
3807
3808//===----------------------------------------------------------------------===//
3809// DeclContext's Name Lookup Table Serialization
3810//===----------------------------------------------------------------------===//
3811
3812namespace {
3813
3814// Trait used for the on-disk hash table used in the method pool.
3815class ASTDeclContextNameLookupTrait {
3816 ASTWriter &Writer;
3817 llvm::SmallVector<DeclID, 64> DeclIDs;
3818
3819public:
3820 using key_type = DeclarationNameKey;
3821 using key_type_ref = key_type;
3822
3823 /// A start and end index into DeclIDs, representing a sequence of decls.
3824 using data_type = std::pair<unsigned, unsigned>;
3825 using data_type_ref = const data_type &;
3826
3827 using hash_value_type = unsigned;
3828 using offset_type = unsigned;
3829
3830 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3831
3832 template<typename Coll>
3833 data_type getData(const Coll &Decls) {
3834 unsigned Start = DeclIDs.size();
3835 for (NamedDecl *D : Decls) {
3836 DeclIDs.push_back(
3837 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3838 }
3839 return std::make_pair(Start, DeclIDs.size());
3840 }
3841
3842 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3843 unsigned Start = DeclIDs.size();
3844 for (auto ID : FromReader)
3845 DeclIDs.push_back(ID);
3846 return std::make_pair(Start, DeclIDs.size());
3847 }
3848
3849 static bool EqualKey(key_type_ref a, key_type_ref b) {
3850 return a == b;
3851 }
3852
3853 hash_value_type ComputeHash(DeclarationNameKey Name) {
3854 return Name.getHash();
3855 }
3856
3857 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3858 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3859, __PRETTY_FUNCTION__))
3859 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3859, __PRETTY_FUNCTION__))
;
3860
3861 using namespace llvm::support;
3862
3863 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3864 }
3865
3866 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3867 DeclarationNameKey Name,
3868 data_type_ref Lookup) {
3869 using namespace llvm::support;
3870
3871 endian::Writer LE(Out, little);
3872 unsigned KeyLen = 1;
3873 switch (Name.getKind()) {
3874 case DeclarationName::Identifier:
3875 case DeclarationName::ObjCZeroArgSelector:
3876 case DeclarationName::ObjCOneArgSelector:
3877 case DeclarationName::ObjCMultiArgSelector:
3878 case DeclarationName::CXXLiteralOperatorName:
3879 case DeclarationName::CXXDeductionGuideName:
3880 KeyLen += 4;
3881 break;
3882 case DeclarationName::CXXOperatorName:
3883 KeyLen += 1;
3884 break;
3885 case DeclarationName::CXXConstructorName:
3886 case DeclarationName::CXXDestructorName:
3887 case DeclarationName::CXXConversionFunctionName:
3888 case DeclarationName::CXXUsingDirective:
3889 break;
3890 }
3891 LE.write<uint16_t>(KeyLen);
3892
3893 // 4 bytes for each DeclID.
3894 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3895 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3896, __PRETTY_FUNCTION__))
3896 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3896, __PRETTY_FUNCTION__))
;
3897 LE.write<uint16_t>(DataLen);
3898
3899 return std::make_pair(KeyLen, DataLen);
3900 }
3901
3902 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3903 using namespace llvm::support;
3904
3905 endian::Writer LE(Out, little);
3906 LE.write<uint8_t>(Name.getKind());
3907 switch (Name.getKind()) {
3908 case DeclarationName::Identifier:
3909 case DeclarationName::CXXLiteralOperatorName:
3910 case DeclarationName::CXXDeductionGuideName:
3911 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3912 return;
3913 case DeclarationName::ObjCZeroArgSelector:
3914 case DeclarationName::ObjCOneArgSelector:
3915 case DeclarationName::ObjCMultiArgSelector:
3916 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3917 return;
3918 case DeclarationName::CXXOperatorName:
3919 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3920, __PRETTY_FUNCTION__))
3920 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3920, __PRETTY_FUNCTION__))
;
3921 LE.write<uint8_t>(Name.getOperatorKind());
3922 return;
3923 case DeclarationName::CXXConstructorName:
3924 case DeclarationName::CXXDestructorName:
3925 case DeclarationName::CXXConversionFunctionName:
3926 case DeclarationName::CXXUsingDirective:
3927 return;
3928 }
3929
3930 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3930)
;
3931 }
3932
3933 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3934 unsigned DataLen) {
3935 using namespace llvm::support;
3936
3937 endian::Writer LE(Out, little);
3938 uint64_t Start = Out.tell(); (void)Start;
3939 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3940 LE.write<uint32_t>(DeclIDs[I]);
3941 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3941, __PRETTY_FUNCTION__))
;
3942 }
3943};
3944
3945} // namespace
3946
3947bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3948 DeclContext *DC) {
3949 return Result.hasExternalDecls() &&
3950 DC->hasNeedToReconcileExternalVisibleStorage();
3951}
3952
3953bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3954 DeclContext *DC) {
3955 for (auto *D : Result.getLookupResult())
3956 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3957 return false;
3958
3959 return true;
3960}
3961
3962void
3963ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3964 llvm::SmallVectorImpl<char> &LookupTable) {
3965 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3967, __PRETTY_FUNCTION__))
3966 !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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3967, __PRETTY_FUNCTION__))
3967 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3967, __PRETTY_FUNCTION__))
;
3968
3969 // FIXME: We need to build the lookups table, which is logically const.
3970 auto *DC = const_cast<DeclContext*>(ConstDC);
3971 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3971, __PRETTY_FUNCTION__))
;
3972
3973 // Create the on-disk hash table representation.
3974 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3975 ASTDeclContextNameLookupTrait> Generator;
3976 ASTDeclContextNameLookupTrait Trait(*this);
3977
3978 // The first step is to collect the declaration names which we need to
3979 // serialize into the name lookup table, and to collect them in a stable
3980 // order.
3981 SmallVector<DeclarationName, 16> Names;
3982
3983 // We also build up small sets of the constructor and conversion function
3984 // names which are visible.
3985 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3986
3987 for (auto &Lookup : *DC->buildLookup()) {
3988 auto &Name = Lookup.first;
3989 auto &Result = Lookup.second;
3990
3991 // If there are no local declarations in our lookup result, we
3992 // don't need to write an entry for the name at all. If we can't
3993 // write out a lookup set without performing more deserialization,
3994 // just skip this entry.
3995 if (isLookupResultExternal(Result, DC) &&
3996 isLookupResultEntirelyExternal(Result, DC))
3997 continue;
3998
3999 // We also skip empty results. If any of the results could be external and
4000 // the currently available results are empty, then all of the results are
4001 // external and we skip it above. So the only way we get here with an empty
4002 // results is when no results could have been external *and* we have
4003 // external results.
4004 //
4005 // FIXME: While we might want to start emitting on-disk entries for negative
4006 // lookups into a decl context as an optimization, today we *have* to skip
4007 // them because there are names with empty lookup results in decl contexts
4008 // which we can't emit in any stable ordering: we lookup constructors and
4009 // conversion functions in the enclosing namespace scope creating empty
4010 // results for them. This in almost certainly a bug in Clang's name lookup,
4011 // but that is likely to be hard or impossible to fix and so we tolerate it
4012 // here by omitting lookups with empty results.
4013 if (Lookup.second.getLookupResult().empty())
4014 continue;
4015
4016 switch (Lookup.first.getNameKind()) {
4017 default:
4018 Names.push_back(Lookup.first);
4019 break;
4020
4021 case DeclarationName::CXXConstructorName:
4022 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4023, __PRETTY_FUNCTION__))
4023 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4023, __PRETTY_FUNCTION__))
;
4024 ConstructorNameSet.insert(Name);
4025 break;
4026
4027 case DeclarationName::CXXConversionFunctionName:
4028 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4029, __PRETTY_FUNCTION__))
4029 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4029, __PRETTY_FUNCTION__))
;
4030 ConversionNameSet.insert(Name);
4031 break;
4032 }
4033 }
4034
4035 // Sort the names into a stable order.
4036 llvm::sort(Names);
4037
4038 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4039 // We need to establish an ordering of constructor and conversion function
4040 // names, and they don't have an intrinsic ordering.
4041
4042 // First we try the easy case by forming the current context's constructor
4043 // name and adding that name first. This is a very useful optimization to
4044 // avoid walking the lexical declarations in many cases, and it also
4045 // handles the only case where a constructor name can come from some other
4046 // lexical context -- when that name is an implicit constructor merged from
4047 // another declaration in the redecl chain. Any non-implicit constructor or
4048 // conversion function which doesn't occur in all the lexical contexts
4049 // would be an ODR violation.
4050 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4051 Context->getCanonicalType(Context->getRecordType(D)));
4052 if (ConstructorNameSet.erase(ImplicitCtorName))
4053 Names.push_back(ImplicitCtorName);
4054
4055 // If we still have constructors or conversion functions, we walk all the
4056 // names in the decl and add the constructors and conversion functions
4057 // which are visible in the order they lexically occur within the context.
4058 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4059 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4060 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4061 auto Name = ChildND->getDeclName();
4062 switch (Name.getNameKind()) {
4063 default:
4064 continue;
4065
4066 case DeclarationName::CXXConstructorName:
4067 if (ConstructorNameSet.erase(Name))
4068 Names.push_back(Name);
4069 break;
4070
4071 case DeclarationName::CXXConversionFunctionName:
4072 if (ConversionNameSet.erase(Name))
4073 Names.push_back(Name);
4074 break;
4075 }
4076
4077 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4078 break;
4079 }
4080
4081 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4083, __PRETTY_FUNCTION__))
4082 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4083, __PRETTY_FUNCTION__))
4083 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4083, __PRETTY_FUNCTION__))
;
4084 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4086, __PRETTY_FUNCTION__))
4085 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4086, __PRETTY_FUNCTION__))
4086 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4086, __PRETTY_FUNCTION__))
;
4087 }
4088
4089 // Next we need to do a lookup with each name into this decl context to fully
4090 // populate any results from external sources. We don't actually use the
4091 // results of these lookups because we only want to use the results after all
4092 // results have been loaded and the pointers into them will be stable.
4093 for (auto &Name : Names)
4094 DC->lookup(Name);
4095
4096 // Now we need to insert the results for each name into the hash table. For
4097 // constructor names and conversion function names, we actually need to merge
4098 // all of the results for them into one list of results each and insert
4099 // those.
4100 SmallVector<NamedDecl *, 8> ConstructorDecls;
4101 SmallVector<NamedDecl *, 8> ConversionDecls;
4102
4103 // Now loop over the names, either inserting them or appending for the two
4104 // special cases.
4105 for (auto &Name : Names) {
4106 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4107
4108 switch (Name.getNameKind()) {
4109 default:
4110 Generator.insert(Name, Trait.getData(Result), Trait);
4111 break;
4112
4113 case DeclarationName::CXXConstructorName:
4114 ConstructorDecls.append(Result.begin(), Result.end());
4115 break;
4116
4117 case DeclarationName::CXXConversionFunctionName:
4118 ConversionDecls.append(Result.begin(), Result.end());
4119 break;
4120 }
4121 }
4122
4123 // Handle our two special cases if we ended up having any. We arbitrarily use
4124 // the first declaration's name here because the name itself isn't part of
4125 // the key, only the kind of name is used.
4126 if (!ConstructorDecls.empty())
4127 Generator.insert(ConstructorDecls.front()->getDeclName(),
4128 Trait.getData(ConstructorDecls), Trait);
4129 if (!ConversionDecls.empty())
4130 Generator.insert(ConversionDecls.front()->getDeclName(),
4131 Trait.getData(ConversionDecls), Trait);
4132
4133 // Create the on-disk hash table. Also emit the existing imported and
4134 // merged table if there is one.
4135 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4136 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4137}
4138
4139/// Write the block containing all of the declaration IDs
4140/// visible from the given DeclContext.
4141///
4142/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4143/// bitstream, or 0 if no block was written.
4144uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4145 DeclContext *DC) {
4146 // If we imported a key declaration of this namespace, write the visible
4147 // lookup results as an update record for it rather than including them
4148 // on this declaration. We will only look at key declarations on reload.
4149 if (isa<NamespaceDecl>(DC) && Chain &&
4150 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4151 // Only do this once, for the first local declaration of the namespace.
4152 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4153 Prev = Prev->getPreviousDecl())
4154 if (!Prev->isFromASTFile())
4155 return 0;
4156
4157 // Note that we need to emit an update record for the primary context.
4158 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4159
4160 // Make sure all visible decls are written. They will be recorded later. We
4161 // do this using a side data structure so we can sort the names into
4162 // a deterministic order.
4163 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4164 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4165 LookupResults;
4166 if (Map) {
4167 LookupResults.reserve(Map->size());
4168 for (auto &Entry : *Map)
4169 LookupResults.push_back(
4170 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4171 }
4172
4173 llvm::sort(LookupResults, llvm::less_first());
4174 for (auto &NameAndResult : LookupResults) {
4175 DeclarationName Name = NameAndResult.first;
4176 DeclContext::lookup_result Result = NameAndResult.second;
4177 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4178 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4179 // We have to work around a name lookup bug here where negative lookup
4180 // results for these names get cached in namespace lookup tables (these
4181 // names should never be looked up in a namespace).
4182 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4183, __PRETTY_FUNCTION__))
4183 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4183, __PRETTY_FUNCTION__))
;
4184 continue;
4185 }
4186
4187 for (NamedDecl *ND : Result)
4188 if (!ND->isFromASTFile())
4189 GetDeclRef(ND);
4190 }
4191
4192 return 0;
4193 }
4194
4195 if (DC->getPrimaryContext() != DC)
4196 return 0;
4197
4198 // Skip contexts which don't support name lookup.
4199 if (!DC->isLookupContext())
4200 return 0;
4201
4202 // If not in C++, we perform name lookup for the translation unit via the
4203 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4204 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4205 return 0;
4206
4207 // Serialize the contents of the mapping used for lookup. Note that,
4208 // although we have two very different code paths, the serialized
4209 // representation is the same for both cases: a declaration name,
4210 // followed by a size, followed by references to the visible
4211 // declarations that have that name.
4212 uint64_t Offset = Stream.GetCurrentBitNo();
4213 StoredDeclsMap *Map = DC->buildLookup();
4214 if (!Map || Map->empty())
4215 return 0;
4216
4217 // Create the on-disk hash table in a buffer.
4218 SmallString<4096> LookupTable;
4219 GenerateNameLookupTable(DC, LookupTable);
4220
4221 // Write the lookup table
4222 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4223 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4224 LookupTable);
4225 ++NumVisibleDeclContexts;
4226 return Offset;
4227}
4228
4229/// Write an UPDATE_VISIBLE block for the given context.
4230///
4231/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4232/// DeclContext in a dependent AST file. As such, they only exist for the TU
4233/// (in C++), for namespaces, and for classes with forward-declared unscoped
4234/// enumeration members (in C++11).
4235void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4236 StoredDeclsMap *Map = DC->getLookupPtr();
4237 if (!Map || Map->empty())
4238 return;
4239
4240 // Create the on-disk hash table in a buffer.
4241 SmallString<4096> LookupTable;
4242 GenerateNameLookupTable(DC, LookupTable);
4243
4244 // If we're updating a namespace, select a key declaration as the key for the
4245 // update record; those are the only ones that will be checked on reload.
4246 if (isa<NamespaceDecl>(DC))
4247 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4248
4249 // Write the lookup table
4250 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4251 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4252}
4253
4254/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4255void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4256 RecordData::value_type Record[] = {Opts.getInt()};
4257 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4258}
4259
4260/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4261void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4262 if (!SemaRef.Context.getLangOpts().OpenCL)
4263 return;
4264
4265 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4266 RecordData Record;
4267 for (const auto &I:Opts.OptMap) {
4268 AddString(I.getKey(), Record);
4269 auto V = I.getValue();
4270 Record.push_back(V.Supported ? 1 : 0);
4271 Record.push_back(V.Enabled ? 1 : 0);
4272 Record.push_back(V.Avail);
4273 Record.push_back(V.Core);
4274 }
4275 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4276}
4277
4278void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4279 if (!SemaRef.Context.getLangOpts().OpenCL)
4280 return;
4281
4282 RecordData Record;
4283 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4284 Record.push_back(
4285 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4286 Record.push_back(I.second.size());
4287 for (auto Ext : I.second)
4288 AddString(Ext, Record);
4289 }
4290 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4291}
4292
4293void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4294 if (!SemaRef.Context.getLangOpts().OpenCL)
4295 return;
4296
4297 RecordData Record;
4298 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4299 Record.push_back(getDeclID(I.first));
4300 Record.push_back(static_cast<unsigned>(I.second.size()));
4301 for (auto Ext : I.second)
4302 AddString(Ext, Record);
4303 }
4304 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4305}
4306
4307void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4308 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4309 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4310 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4311 }
4312}
4313
4314void ASTWriter::WriteObjCCategories() {
4315 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4316 RecordData Categories;
4317
4318 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4319 unsigned Size = 0;
4320 unsigned StartIndex = Categories.size();
4321
4322 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4323
4324 // Allocate space for the size.
4325 Categories.push_back(0);
4326
4327 // Add the categories.
4328 for (ObjCInterfaceDecl::known_categories_iterator
4329 Cat = Class->known_categories_begin(),
4330 CatEnd = Class->known_categories_end();
4331 Cat != CatEnd; ++Cat, ++Size) {
4332 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4332, __PRETTY_FUNCTION__))
;
4333 AddDeclRef(*Cat, Categories);
4334 }
4335
4336 // Update the size.
4337 Categories[StartIndex] = Size;
4338
4339 // Record this interface -> category map.
4340 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4341 CategoriesMap.push_back(CatInfo);
4342 }
4343
4344 // Sort the categories map by the definition ID, since the reader will be
4345 // performing binary searches on this information.
4346 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4347
4348 // Emit the categories map.
4349 using namespace llvm;
4350
4351 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4352 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4353 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4354 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4355 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4356
4357 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4358 Stream.EmitRecordWithBlob(AbbrevID, Record,
4359 reinterpret_cast<char *>(CategoriesMap.data()),
4360 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4361
4362 // Emit the category lists.
4363 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4364}
4365
4366void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4367 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4368
4369 if (LPTMap.empty())
4370 return;
4371
4372 RecordData Record;
4373 for (auto &LPTMapEntry : LPTMap) {
4374 const FunctionDecl *FD = LPTMapEntry.first;
4375 LateParsedTemplate &LPT = *LPTMapEntry.second;
4376 AddDeclRef(FD, Record);
4377 AddDeclRef(LPT.D, Record);
4378 Record.push_back(LPT.Toks.size());
4379
4380 for (const auto &Tok : LPT.Toks) {
4381 AddToken(Tok, Record);
4382 }
4383 }
4384 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4385}
4386
4387/// Write the state of 'pragma clang optimize' at the end of the module.
4388void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4389 RecordData Record;
4390 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4391 AddSourceLocation(PragmaLoc, Record);
4392 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4393}
4394
4395/// Write the state of 'pragma ms_struct' at the end of the module.
4396void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4397 RecordData Record;
4398 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4399 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4400}
4401
4402/// Write the state of 'pragma pointers_to_members' at the end of the
4403//module.
4404void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4405 RecordData Record;
4406 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4407 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4408 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4409}
4410
4411/// Write the state of 'pragma pack' at the end of the module.
4412void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4413 // Don't serialize pragma pack state for modules, since it should only take
4414 // effect on a per-submodule basis.
4415 if (WritingModule)
4416 return;
4417
4418 RecordData Record;
4419 Record.push_back(SemaRef.PackStack.CurrentValue);
4420 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4421 Record.push_back(SemaRef.PackStack.Stack.size());
4422 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4423 Record.push_back(StackEntry.Value);
4424 AddSourceLocation(StackEntry.PragmaLocation, Record);
4425 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4426 AddString(StackEntry.StackSlotLabel, Record);
4427 }
4428 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4429}
4430
4431void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4432 ModuleFileExtensionWriter &Writer) {
4433 // Enter the extension block.
4434 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4435
4436 // Emit the metadata record abbreviation.
4437 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4438 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4439 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4440 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4441 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4442 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4443 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4444 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4445
4446 // Emit the metadata record.
4447 RecordData Record;
4448 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4449 Record.push_back(EXTENSION_METADATA);
4450 Record.push_back(Metadata.MajorVersion);
4451 Record.push_back(Metadata.MinorVersion);
4452 Record.push_back(Metadata.BlockName.size());
4453 Record.push_back(Metadata.UserInfo.size());
4454 SmallString<64> Buffer;
4455 Buffer += Metadata.BlockName;
4456 Buffer += Metadata.UserInfo;
4457 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4458
4459 // Emit the contents of the extension block.
4460 Writer.writeExtensionContents(SemaRef, Stream);
4461
4462 // Exit the extension block.
4463 Stream.ExitBlock();
4464}
4465
4466//===----------------------------------------------------------------------===//
4467// General Serialization Routines
4468//===----------------------------------------------------------------------===//
4469
4470void ASTRecordWriter::AddAttr(const Attr *A) {
4471 auto &Record = *this;
4472 if (!A)
4473 return Record.push_back(0);
4474 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4475 Record.AddSourceRange(A->getRange());
4476
4477#include "clang/Serialization/AttrPCHWrite.inc"
4478}
4479
4480/// Emit the list of attributes to the specified record.
4481void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4482 push_back(Attrs.size());
4483 for (const auto *A : Attrs)
4484 AddAttr(A);
4485}
4486
4487void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4488 AddSourceLocation(Tok.getLocation(), Record);
4489 Record.push_back(Tok.getLength());
4490
4491 // FIXME: When reading literal tokens, reconstruct the literal pointer
4492 // if it is needed.
4493 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4494 // FIXME: Should translate token kind to a stable encoding.
4495 Record.push_back(Tok.getKind());
4496 // FIXME: Should translate token flags to a stable encoding.
4497 Record.push_back(Tok.getFlags());
4498}
4499
4500void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4501 Record.push_back(Str.size());
4502 Record.insert(Record.end(), Str.begin(), Str.end());
4503}
4504
4505bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4506 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4506, __PRETTY_FUNCTION__))
;
4507
4508 bool Changed =
4509 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4510
4511 // Remove a prefix to make the path relative, if relevant.
4512 const char *PathBegin = Path.data();
4513 const char *PathPtr =
4514 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4515 if (PathPtr != PathBegin) {
4516 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4517 Changed = true;
4518 }
4519
4520 return Changed;
4521}
4522
4523void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4524 SmallString<128> FilePath(Path);
4525 PreparePathForOutput(FilePath);
4526 AddString(FilePath, Record);
4527}
4528
4529void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4530 StringRef Path) {
4531 SmallString<128> FilePath(Path);
4532 PreparePathForOutput(FilePath);
4533 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4534}
4535
4536void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4537 RecordDataImpl &Record) {
4538 Record.push_back(Version.getMajor());
4539 if (Optional<unsigned> Minor = Version.getMinor())
4540 Record.push_back(*Minor + 1);
4541 else
4542 Record.push_back(0);
4543 if (Optional<unsigned> Subminor = Version.getSubminor())
4544 Record.push_back(*Subminor + 1);
4545 else
4546 Record.push_back(0);
4547}
4548
4549/// Note that the identifier II occurs at the given offset
4550/// within the identifier table.
4551void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4552 IdentID ID = IdentifierIDs[II];
4553 // Only store offsets new to this AST file. Other identifier names are looked
4554 // up earlier in the chain and thus don't need an offset.
4555 if (ID >= FirstIdentID)
4556 IdentifierOffsets[ID - FirstIdentID] = Offset;
4557}
4558
4559/// Note that the selector Sel occurs at the given offset
4560/// within the method pool/selector table.
4561void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4562 unsigned ID = SelectorIDs[Sel];
4563 assert(ID && "Unknown selector")((ID && "Unknown selector") ? static_cast<void>
(0) : __assert_fail ("ID && \"Unknown selector\"", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4563, __PRETTY_FUNCTION__))
;
4564 // Don't record offsets for selectors that are also available in a different
4565 // file.
4566 if (ID < FirstSelectorID)
4567 return;
4568 SelectorOffsets[ID - FirstSelectorID] = Offset;
4569}
4570
4571ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4572 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4573 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4574 bool IncludeTimestamps)
4575 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4576 IncludeTimestamps(IncludeTimestamps) {
4577 for (const auto &Ext : Extensions) {
4578 if (auto Writer = Ext->createExtensionWriter(*this))
4579 ModuleFileExtensionWriters.push_back(std::move(Writer));
4580 }
4581}
4582
4583ASTWriter::~ASTWriter() {
4584 llvm::DeleteContainerSeconds(FileDeclIDs);
4585}
4586
4587const LangOptions &ASTWriter::getLangOpts() const {
4588 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4588, __PRETTY_FUNCTION__))
;
4589 return Context->getLangOpts();
4590}
4591
4592time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4593 return IncludeTimestamps ? E->getModificationTime() : 0;
4594}
4595
4596ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4597 const std::string &OutputFile,
4598 Module *WritingModule, StringRef isysroot,
4599 bool hasErrors) {
4600 WritingAST = true;
4601
4602 ASTHasCompilerErrors = hasErrors;
4603
4604 // Emit the file header.
4605 Stream.Emit((unsigned)'C', 8);
4606 Stream.Emit((unsigned)'P', 8);
4607 Stream.Emit((unsigned)'C', 8);
4608 Stream.Emit((unsigned)'H', 8);
4609
4610 WriteBlockInfoBlock();
4611
4612 Context = &SemaRef.Context;
4613 PP = &SemaRef.PP;
4614 this->WritingModule = WritingModule;
4615 ASTFileSignature Signature =
4616 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4617 Context = nullptr;
4618 PP = nullptr;
4619 this->WritingModule = nullptr;
4620 this->BaseDirectory.clear();
4621
4622 WritingAST = false;
4623 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4624 // Construct MemoryBuffer and update buffer manager.
4625 PCMCache.addBuffer(OutputFile,
4626 llvm::MemoryBuffer::getMemBufferCopy(
4627 StringRef(Buffer.begin(), Buffer.size())));
4628 }
4629 return Signature;
4630}
4631
4632template<typename Vector>
4633static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4634 ASTWriter::RecordData &Record) {
4635 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4636 I != E; ++I) {
4637 Writer.AddDeclRef(*I, Record);
4638 }
4639}
4640
4641ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4642 const std::string &OutputFile,
4643 Module *WritingModule) {
4644 using namespace llvm;
4645
4646 bool isModule = WritingModule != nullptr;
4647
4648 // Make sure that the AST reader knows to finalize itself.
4649 if (Chain)
4650 Chain->finalizeForWriting();
4651
4652 ASTContext &Context = SemaRef.Context;
4653 Preprocessor &PP = SemaRef.PP;
4654
4655 // Set up predefined declaration IDs.
4656 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4657 if (D) {
4658 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4658, __PRETTY_FUNCTION__))
;
4659 DeclIDs[D] = ID;
4660 }
4661 };
4662 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4663 PREDEF_DECL_TRANSLATION_UNIT_ID);
4664 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4665 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4666 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4667 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4668 PREDEF_DECL_OBJC_PROTOCOL_ID);
4669 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4670 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4671 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4672 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4673 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4674 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4675 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4676 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4677 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4678 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4679 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4680 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4681 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4682 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4683 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4684 RegisterPredefDecl(Context.TypePackElementDecl,
4685 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4686
4687 // Build a record containing all of the tentative definitions in this file, in
4688 // TentativeDefinitions order. Generally, this record will be empty for
4689 // headers.
4690 RecordData TentativeDefinitions;
4691 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4692
4693 // Build a record containing all of the file scoped decls in this file.
4694 RecordData UnusedFileScopedDecls;
4695 if (!isModule)
4696 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4697 UnusedFileScopedDecls);
4698
4699 // Build a record containing all of the delegating constructors we still need
4700 // to resolve.
4701 RecordData DelegatingCtorDecls;
4702 if (!isModule)
4703 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4704
4705 // Write the set of weak, undeclared identifiers. We always write the
4706 // entire table, since later PCH files in a PCH chain are only interested in
4707 // the results at the end of the chain.
4708 RecordData WeakUndeclaredIdentifiers;
4709 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4710 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4711 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4712 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4713 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4714 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4715 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4716 }
4717
4718 // Build a record containing all of the ext_vector declarations.
4719 RecordData ExtVectorDecls;
4720 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4721
4722 // Build a record containing all of the VTable uses information.
4723 RecordData VTableUses;
4724 if (!SemaRef.VTableUses.empty()) {
4725 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4726 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4727 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4728 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4729 }
4730 }
4731
4732 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4733 RecordData UnusedLocalTypedefNameCandidates;
4734 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4735 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4736
4737 // Build a record containing all of pending implicit instantiations.
4738 RecordData PendingInstantiations;
4739 for (const auto &I : SemaRef.PendingInstantiations) {
4740 AddDeclRef(I.first, PendingInstantiations);
4741 AddSourceLocation(I.second, PendingInstantiations);
4742 }
4743 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4744, __PRETTY_FUNCTION__))
4744 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4744, __PRETTY_FUNCTION__))
;
4745
4746 // Build a record containing some declaration references.
4747 RecordData SemaDeclRefs;
4748 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4749 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4750 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4751 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4752 }
4753
4754 RecordData CUDASpecialDeclRefs;
4755 if (Context.getcudaConfigureCallDecl()) {
4756 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4757 }
4758
4759 // Build a record containing all of the known namespaces.
4760 RecordData KnownNamespaces;
4761 for (const auto &I : SemaRef.KnownNamespaces) {
4762 if (!I.second)
4763 AddDeclRef(I.first, KnownNamespaces);
4764 }
4765
4766 // Build a record of all used, undefined objects that require definitions.
4767 RecordData UndefinedButUsed;
4768
4769 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4770 SemaRef.getUndefinedButUsed(Undefined);
4771 for (const auto &I : Undefined) {
4772 AddDeclRef(I.first, UndefinedButUsed);
4773 AddSourceLocation(I.second, UndefinedButUsed);
4774 }
4775
4776 // Build a record containing all delete-expressions that we would like to
4777 // analyze later in AST.
4778 RecordData DeleteExprsToAnalyze;
4779
4780 if (!isModule) {
4781 for (const auto &DeleteExprsInfo :
4782 SemaRef.getMismatchingDeleteExpressions()) {
4783 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4784 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4785 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4786 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4787 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4788 }
4789 }
4790 }
4791
4792 // Write the control block
4793 WriteControlBlock(PP, Context, isysroot, OutputFile);
4794
4795 // Write the remaining AST contents.
4796 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4797
4798 // This is so that older clang versions, before the introduction
4799 // of the control block, can read and reject the newer PCH format.
4800 {
4801 RecordData Record = {VERSION_MAJOR};
4802 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4803 }
4804
4805 // Create a lexical update block containing all of the declarations in the
4806 // translation unit that do not come from other AST files.
4807 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4808 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4809 for (const auto *D : TU->noload_decls()) {
4810 if (!D->isFromASTFile()) {
4811 NewGlobalKindDeclPairs.push_back(D->getKind());
4812 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4813 }
4814 }
4815
4816 auto Abv = std::make_shared<BitCodeAbbrev>();
4817 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4818 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4819 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4820 {
4821 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4822 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4823 bytes(NewGlobalKindDeclPairs));
4824 }
4825
4826 // And a visible updates block for the translation unit.
4827 Abv = std::make_shared<BitCodeAbbrev>();
4828 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4829 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4830 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4831 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4832 WriteDeclContextVisibleUpdate(TU);
4833
4834 // If we have any extern "C" names, write out a visible update for them.
4835 if (Context.ExternCContext)
4836 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4837
4838 // If the translation unit has an anonymous namespace, and we don't already
4839 // have an update block for it, write it as an update block.
4840 // FIXME: Why do we not do this if there's already an update block?
4841 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4842 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4843 if (Record.empty())
4844 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4845 }
4846
4847 // Add update records for all mangling numbers and static local numbers.
4848 // These aren't really update records, but this is a convenient way of
4849 // tagging this rare extra data onto the declarations.
4850 for (const auto &Number : Context.MangleNumbers)
4851 if (!Number.first->isFromASTFile())
4852 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4853 Number.second));
4854 for (const auto &Number : Context.StaticLocalNumbers)
4855 if (!Number.first->isFromASTFile())
4856 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4857 Number.second));
4858
4859 // Make sure visible decls, added to DeclContexts previously loaded from
4860 // an AST file, are registered for serialization. Likewise for template
4861 // specializations added to imported templates.
4862 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4863 GetDeclRef(I);
4864 }
4865
4866 // Make sure all decls associated with an identifier are registered for
4867 // serialization, if we're storing decls with identifiers.
4868 if (!WritingModule || !getLangOpts().CPlusPlus) {
4869 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4870 for (const auto &ID : PP.getIdentifierTable()) {
4871 const IdentifierInfo *II = ID.second;
4872 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4873 IIs.push_back(II);
4874 }
4875 // Sort the identifiers to visit based on their name.
4876 llvm::sort(IIs, llvm::less_ptr<IdentifierInfo>());
4877 for (const IdentifierInfo *II : IIs) {
4878 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4879 DEnd = SemaRef.IdResolver.end();
4880 D != DEnd; ++D) {
4881 GetDeclRef(*D);
4882 }
4883 }
4884 }
4885
4886 // For method pool in the module, if it contains an entry for a selector,
4887 // the entry should be complete, containing everything introduced by that
4888 // module and all modules it imports. It's possible that the entry is out of
4889 // date, so we need to pull in the new content here.
4890
4891 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4892 // safe, we copy all selectors out.
4893 llvm::SmallVector<Selector, 256> AllSelectors;
4894 for (auto &SelectorAndID : SelectorIDs)
4895 AllSelectors.push_back(SelectorAndID.first);
4896 for (auto &Selector : AllSelectors)
4897 SemaRef.updateOutOfDateSelector(Selector);
4898
4899 // Form the record of special types.
4900 RecordData SpecialTypes;
4901 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4902 AddTypeRef(Context.getFILEType(), SpecialTypes);
4903 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4904 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4905 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4906 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4907 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4908 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4909
4910 if (Chain) {
4911 // Write the mapping information describing our module dependencies and how
4912 // each of those modules were mapped into our own offset/ID space, so that
4913 // the reader can build the appropriate mapping to its own offset/ID space.
4914 // The map consists solely of a blob with the following format:
4915 // *(module-kind:i8
4916 // module-name-len:i16 module-name:len*i8
4917 // source-location-offset:i32
4918 // identifier-id:i32
4919 // preprocessed-entity-id:i32
4920 // macro-definition-id:i32
4921 // submodule-id:i32
4922 // selector-id:i32
4923 // declaration-id:i32
4924 // c++-base-specifiers-id:i32
4925 // type-id:i32)
4926 //
4927 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4928 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4929 // it is the module file name.
4930 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4931 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4932 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4933 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4934 SmallString<2048> Buffer;
4935 {
4936 llvm::raw_svector_ostream Out(Buffer);
4937 for (ModuleFile &M : Chain->ModuleMgr) {
4938 using namespace llvm::support;
4939
4940 endian::Writer LE(Out, little);
4941 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4942 StringRef Name =
4943 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4944 ? M.ModuleName
4945 : M.FileName;
4946 LE.write<uint16_t>(Name.size());
4947 Out.write(Name.data(), Name.size());
4948
4949 // Note: if a base ID was uint max, it would not be possible to load
4950 // another module after it or have more than one entity inside it.
4951 uint32_t None = std::numeric_limits<uint32_t>::max();
4952
4953 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4954 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4954, __PRETTY_FUNCTION__))
;
4955 if (ShouldWrite)
4956 LE.write<uint32_t>(BaseID);
4957 else
4958 LE.write<uint32_t>(None);
4959 };
4960
4961 // These values should be unique within a chain, since they will be read
4962 // as keys into ContinuousRangeMaps.
4963 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4964 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4965 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4966 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4967 M.NumPreprocessedEntities);
4968 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4969 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4970 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4971 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4972 }
4973 }
4974 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4975 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4976 Buffer.data(), Buffer.size());
4977 }
4978
4979 RecordData DeclUpdatesOffsetsRecord;
4980
4981 // Keep writing types, declarations, and declaration update records
4982 // until we've emitted all of them.
4983 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4984 WriteTypeAbbrevs();
4985 WriteDeclAbbrevs();
4986 do {
4987 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4988 while (!DeclTypesToEmit.empty()) {
4989 DeclOrType DOT = DeclTypesToEmit.front();
4990 DeclTypesToEmit.pop();
4991 if (DOT.isType())
4992 WriteType(DOT.getType());
4993 else
4994 WriteDecl(Context, DOT.getDecl());
4995 }
4996 } while (!DeclUpdates.empty());
4997 Stream.ExitBlock();
4998
4999 DoneWritingDeclsAndTypes = true;
5000
5001 // These things can only be done once we've written out decls and types.
5002 WriteTypeDeclOffsets();
5003 if (!DeclUpdatesOffsetsRecord.empty())
5004 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
5005 WriteFileDeclIDsMap();
5006 WriteSourceManagerBlock(Context.getSourceManager(), PP);
5007 WriteComments();
5008 WritePreprocessor(PP, isModule);
5009 WriteHeaderSearch(PP.getHeaderSearchInfo());
5010 WriteSelectors(SemaRef);
5011 WriteReferencedSelectorsPool(SemaRef);
5012 WriteLateParsedTemplates(SemaRef);
5013 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
5014 WriteFPPragmaOptions(SemaRef.getFPOptions());
5015 WriteOpenCLExtensions(SemaRef);
5016 WriteOpenCLExtensionTypes(SemaRef);
5017 WriteOpenCLExtensionDecls(SemaRef);
5018 WriteCUDAPragmas(SemaRef);
5019
5020 // If we're emitting a module, write out the submodule information.
5021 if (WritingModule)
5022 WriteSubmodules(WritingModule);
5023
5024 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5025
5026 // Write the record containing external, unnamed definitions.
5027 if (!EagerlyDeserializedDecls.empty())
5028 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5029
5030 if (!ModularCodegenDecls.empty())
5031 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5032
5033 // Write the record containing tentative definitions.
5034 if (!TentativeDefinitions.empty())
5035 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5036
5037 // Write the record containing unused file scoped decls.
5038 if (!UnusedFileScopedDecls.empty())
5039 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5040
5041 // Write the record containing weak undeclared identifiers.
5042 if (!WeakUndeclaredIdentifiers.empty())
5043 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5044 WeakUndeclaredIdentifiers);
5045
5046 // Write the record containing ext_vector type names.
5047 if (!ExtVectorDecls.empty())
5048 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5049
5050 // Write the record containing VTable uses information.
5051 if (!VTableUses.empty())
5052 Stream.EmitRecord(VTABLE_USES, VTableUses);
5053
5054 // Write the record containing potentially unused local typedefs.
5055 if (!UnusedLocalTypedefNameCandidates.empty())
5056 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5057 UnusedLocalTypedefNameCandidates);
5058
5059 // Write the record containing pending implicit instantiations.
5060 if (!PendingInstantiations.empty())
5061 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5062
5063 // Write the record containing declaration references of Sema.
5064 if (!SemaDeclRefs.empty())
5065 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5066
5067 // Write the record containing CUDA-specific declaration references.
5068 if (!CUDASpecialDeclRefs.empty())
5069 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5070
5071 // Write the delegating constructors.
5072 if (!DelegatingCtorDecls.empty())
5073 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5074
5075 // Write the known namespaces.
5076 if (!KnownNamespaces.empty())
5077 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5078
5079 // Write the undefined internal functions and variables, and inline functions.
5080 if (!UndefinedButUsed.empty())
5081 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5082
5083 if (!DeleteExprsToAnalyze.empty())
5084 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5085
5086 // Write the visible updates to DeclContexts.
5087 for (auto *DC : UpdatedDeclContexts)
5088 WriteDeclContextVisibleUpdate(DC);
5089
5090 if (!WritingModule) {
5091 // Write the submodules that were imported, if any.
5092 struct ModuleInfo {
5093 uint64_t ID;
5094 Module *M;
5095 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5096 };
5097 llvm::SmallVector<ModuleInfo, 64> Imports;
5098 for (const auto *I : Context.local_imports()) {
5099 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5099, __PRETTY_FUNCTION__))
;
5100 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5101 I->getImportedModule()));
5102 }
5103
5104 if (!Imports.empty()) {
5105 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5106 return A.ID < B.ID;
5107 };
5108 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5109 return A.ID == B.ID;
5110 };
5111
5112 // Sort and deduplicate module IDs.
5113 llvm::sort(Imports, Cmp);
5114 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5115 Imports.end());
5116
5117 RecordData ImportedModules;
5118 for (const auto &Import : Imports) {
5119 ImportedModules.push_back(Import.ID);
5120 // FIXME: If the module has macros imported then later has declarations
5121 // imported, this location won't be the right one as a location for the
5122 // declaration imports.
5123 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5124 }
5125
5126 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5127 }
5128 }
5129
5130 WriteObjCCategories();
5131 if(!WritingModule) {
5132 WriteOptimizePragmaOptions(SemaRef);
5133 WriteMSStructPragmaOptions(SemaRef);
5134 WriteMSPointersToMembersPragmaOptions(SemaRef);
5135 }
5136 WritePackPragmaOptions(SemaRef);
5137
5138 // Some simple statistics
5139 RecordData::value_type Record[] = {
5140 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5141 Stream.EmitRecord(STATISTICS, Record);
5142 Stream.ExitBlock();
5143
5144 // Write the module file extension blocks.
5145 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5146 WriteModuleFileExtension(SemaRef, *ExtWriter);
5147
5148 return writeUnhashedControlBlock(PP, Context);
5149}
5150
5151void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5152 if (DeclUpdates.empty())
5153 return;
5154
5155 DeclUpdateMap LocalUpdates;
5156 LocalUpdates.swap(DeclUpdates);
5157
5158 for (auto &DeclUpdate : LocalUpdates) {
5159 const Decl *D = DeclUpdate.first;
5160
5161 bool HasUpdatedBody = false;
5162 RecordData RecordData;
5163 ASTRecordWriter Record(*this, RecordData);
5164 for (auto &Update : DeclUpdate.second) {
5165 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5166
5167 // An updated body is emitted last, so that the reader doesn't need
5168 // to skip over the lazy body to reach statements for other records.
5169 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5170 HasUpdatedBody = true;
5171 else
5172 Record.push_back(Kind);
5173
5174 switch (Kind) {
5175 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5176 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5177 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5178 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5178, __PRETTY_FUNCTION__))
;
5179 Record.push_back(GetDeclRef(Update.getDecl()));
5180 break;
5181
5182 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5183 break;
5184
5185 case UPD_CXX_POINT_OF_INSTANTIATION:
5186 // FIXME: Do we need to also save the template specialization kind here?
5187 Record.AddSourceLocation(Update.getLoc());
5188 break;
5189
5190 case UPD_CXX_ADDED_VAR_DEFINITION: {
5191 const VarDecl *VD = cast<VarDecl>(D);
5192 Record.push_back(VD->isInline());
5193 Record.push_back(VD->isInlineSpecified());
5194 if (VD->getInit()) {
5195 Record.push_back(!VD->isInitKnownICE() ? 1
5196 : (VD->isInitICE() ? 3 : 2));
5197 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5198 } else {
5199 Record.push_back(0);
5200 }
5201 break;
5202 }
5203
5204 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5205 Record.AddStmt(const_cast<Expr *>(
5206 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5207 break;
5208
5209 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5210 Record.AddStmt(
5211 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5212 break;
5213
5214 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5215 auto *RD = cast<CXXRecordDecl>(D);
5216 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5217 Record.push_back(RD->isParamDestroyedInCallee());
5218 Record.push_back(RD->getArgPassingRestrictions());
5219 Record.AddCXXDefinitionData(RD);
5220 Record.AddOffset(WriteDeclContextLexicalBlock(
5221 *Context, const_cast<CXXRecordDecl *>(RD)));
5222
5223 // This state is sometimes updated by template instantiation, when we
5224 // switch from the specialization referring to the template declaration
5225 // to it referring to the template definition.
5226 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5227 Record.push_back(MSInfo->getTemplateSpecializationKind());
5228 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5229 } else {
5230 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5231 Record.push_back(Spec->getTemplateSpecializationKind());
5232 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5233
5234 // The instantiation might have been resolved to a partial
5235 // specialization. If so, record which one.
5236 auto From = Spec->getInstantiatedFrom();
5237 if (auto PartialSpec =
5238 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5239 Record.push_back(true);
5240 Record.AddDeclRef(PartialSpec);
5241 Record.AddTemplateArgumentList(
5242 &Spec->getTemplateInstantiationArgs());
5243 } else {
5244 Record.push_back(false);
5245 }
5246 }
5247 Record.push_back(RD->getTagKind());
5248 Record.AddSourceLocation(RD->getLocation());
5249 Record.AddSourceLocation(RD->getBeginLoc());
5250 Record.AddSourceRange(RD->getBraceRange());
5251
5252 // Instantiation may change attributes; write them all out afresh.
5253 Record.push_back(D->hasAttrs());
5254 if (D->hasAttrs())
5255 Record.AddAttributes(D->getAttrs());
5256
5257 // FIXME: Ensure we don't get here for explicit instantiations.
5258 break;
5259 }
5260
5261 case UPD_CXX_RESOLVED_DTOR_DELETE:
5262 Record.AddDeclRef(Update.getDecl());
5263 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5264 break;
5265
5266 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5267 addExceptionSpec(
5268 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5269 Record);
5270 break;
5271
5272 case UPD_CXX_DEDUCED_RETURN_TYPE:
5273 Record.push_back(GetOrCreateTypeID(Update.getType()));
5274 break;
5275
5276 case UPD_DECL_MARKED_USED:
5277 break;
5278
5279 case UPD_MANGLING_NUMBER:
5280 case UPD_STATIC_LOCAL_NUMBER:
5281 Record.push_back(Update.getNumber());
5282 break;
5283
5284 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5285 Record.AddSourceRange(
5286 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5287 break;
5288
5289 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5290 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5291 Record.AddSourceRange(
5292 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5293 break;
5294
5295 case UPD_DECL_EXPORTED:
5296 Record.push_back(getSubmoduleID(Update.getModule()));
5297 break;
5298
5299 case UPD_ADDED_ATTR_TO_RECORD:
5300 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5301 break;
5302 }
5303 }
5304
5305 if (HasUpdatedBody) {
5306 const auto *Def = cast<FunctionDecl>(D);
5307 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5308 Record.push_back(Def->isInlined());
5309 Record.AddSourceLocation(Def->getInnerLocStart());
5310 Record.AddFunctionDefinition(Def);
5311 }
5312
5313 OffsetsRecord.push_back(GetDeclRef(D));
5314 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5315 }
5316}
5317
5318void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5319 uint32_t Raw = Loc.getRawEncoding();
5320 Record.push_back((Raw << 1) | (Raw >> 31));
5321}
5322
5323void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5324 AddSourceLocation(Range.getBegin(), Record);
5325 AddSourceLocation(Range.getEnd(), Record);
5326}
5327
5328void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5329 Record->push_back(Value.getBitWidth());
5330 const uint64_t *Words = Value.getRawData();
5331 Record->append(Words, Words + Value.getNumWords());
5332}
5333
5334void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5335 Record->push_back(Value.isUnsigned());
5336 AddAPInt(Value);
5337}
5338
5339void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5340 AddAPInt(Value.bitcastToAPInt());
5341}
5342
5343void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5344 Record.push_back(getIdentifierRef(II));
5345}
5346
5347IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5348 if (!II)
5349 return 0;
5350
5351 IdentID &ID = IdentifierIDs[II];
5352 if (ID == 0)
5353 ID = NextIdentID++;
5354 return ID;
5355}
5356
5357MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5358 // Don't emit builtin macros like __LINE__ to the AST file unless they
5359 // have been redefined by the header (in which case they are not
5360 // isBuiltinMacro).
5361 if (!MI || MI->isBuiltinMacro())
5362 return 0;
5363
5364 MacroID &ID = MacroIDs[MI];
5365 if (ID == 0) {
5366 ID = NextMacroID++;
5367 MacroInfoToEmitData Info = { Name, MI, ID };
5368 MacroInfosToEmit.push_back(Info);
5369 }
5370 return ID;
5371}
5372
5373MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5374 if (!MI || MI->isBuiltinMacro())
5375 return 0;
5376
5377 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5377, __PRETTY_FUNCTION__))
;
5378 return MacroIDs[MI];
5379}
5380
5381uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5382 return IdentMacroDirectivesOffsetMap.lookup(Name);
5383}
5384
5385void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5386 Record->push_back(Writer->getSelectorRef(SelRef));
5387}
5388
5389SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5390 if (Sel.getAsOpaquePtr() == nullptr) {
5391 return 0;
5392 }
5393
5394 SelectorID SID = SelectorIDs[Sel];
5395 if (SID == 0 && Chain) {
5396 // This might trigger a ReadSelector callback, which will set the ID for
5397 // this selector.
5398 Chain->LoadSelector(Sel);
5399 SID = SelectorIDs[Sel];
5400 }
5401 if (SID == 0) {
5402 SID = NextSelectorID++;
5403 SelectorIDs[Sel] = SID;
5404 }
5405 return SID;
5406}
5407
5408void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5409 AddDeclRef(Temp->getDestructor());
5410}
5411
5412void ASTRecordWriter::AddTemplateArgumentLocInfo(
5413 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5414 switch (Kind) {
5415 case TemplateArgument::Expression:
5416 AddStmt(Arg.getAsExpr());
5417 break;
5418 case TemplateArgument::Type:
5419 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5420 break;
5421 case TemplateArgument::Template:
5422 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5423 AddSourceLocation(Arg.getTemplateNameLoc());
5424 break;
5425 case TemplateArgument::TemplateExpansion:
5426 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5427 AddSourceLocation(Arg.getTemplateNameLoc());
5428 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5429 break;
5430 case TemplateArgument::Null:
5431 case TemplateArgument::Integral:
5432 case TemplateArgument::Declaration:
5433 case TemplateArgument::NullPtr:
5434 case TemplateArgument::Pack:
5435 // FIXME: Is this right?
5436 break;
5437 }
5438}
5439
5440void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5441 AddTemplateArgument(Arg.getArgument());
5442
5443 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5444 bool InfoHasSameExpr
5445 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5446 Record->push_back(InfoHasSameExpr);
5447 if (InfoHasSameExpr)
5448 return; // Avoid storing the same expr twice.
5449 }
5450 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5451}
5452
5453void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5454 if (!TInfo) {
5455 AddTypeRef(QualType());
5456 return;
5457 }
5458
5459 AddTypeRef(TInfo->getType());
5460 AddTypeLoc(TInfo->getTypeLoc());
5461}
5462
5463void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5464 TypeLocWriter TLW(*this);
5465 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5466 TLW.Visit(TL);
5467}
5468
5469void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5470 Record.push_back(GetOrCreateTypeID(T));
5471}
5472
5473TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5474 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5474, __PRETTY_FUNCTION__))
;
5475 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5476 if (T.isNull())
5477 return TypeIdx();
5478 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5478, __PRETTY_FUNCTION__))
;
5479
5480 TypeIdx &Idx = TypeIdxs[T];
5481 if (Idx.getIndex() == 0) {
5482 if (DoneWritingDeclsAndTypes) {
5483 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5483, __PRETTY_FUNCTION__))
;
5484 return TypeIdx();
5485 }
5486
5487 // We haven't seen this type before. Assign it a new ID and put it
5488 // into the queue of types to emit.
5489 Idx = TypeIdx(NextTypeID++);
5490 DeclTypesToEmit.push(T);
5491 }
5492 return Idx;
5493 });
5494}
5495
5496TypeID ASTWriter::getTypeID(QualType T) const {
5497 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5497, __PRETTY_FUNCTION__))
;
5498 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5499 if (T.isNull())
5500 return TypeIdx();
5501 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5501, __PRETTY_FUNCTION__))
;
5502
5503 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5504 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5504, __PRETTY_FUNCTION__))
;
5505 return I->second;
5506 });
5507}
5508
5509void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5510 Record.push_back(GetDeclRef(D));
5511}
5512
5513DeclID ASTWriter::GetDeclRef(const Decl *D) {
5514 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5514, __PRETTY_FUNCTION__))
;
5515
5516 if (!D) {
5517 return 0;
5518 }
5519
5520 // If D comes from an AST file, its declaration ID is already known and
5521 // fixed.
5522 if (D->isFromASTFile())
5523 return D->getGlobalID();
5524
5525 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5525, __PRETTY_FUNCTION__))
;
5526 DeclID &ID = DeclIDs[D];
5527 if (ID == 0) {
5528 if (DoneWritingDeclsAndTypes) {
5529 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5529, __PRETTY_FUNCTION__))
;
5530 return 0;
5531 }
5532
5533 // We haven't seen this declaration before. Give it a new ID and
5534 // enqueue it in the list of declarations to emit.
5535 ID = NextDeclID++;
5536 DeclTypesToEmit.push(const_cast<Decl *>(D));
5537 }
5538
5539 return ID;
5540}
5541
5542DeclID ASTWriter::getDeclID(const Decl *D) {
5543 if (!D)
5544 return 0;
5545
5546 // If D comes from an AST file, its declaration ID is already known and
5547 // fixed.
5548 if (D->isFromASTFile())
5549 return D->getGlobalID();
5550
5551 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5551, __PRETTY_FUNCTION__))
;
5552 return DeclIDs[D];
5553}
5554
5555void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5556 assert(ID)((ID) ? static_cast<void> (0) : __assert_fail ("ID", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5556, __PRETTY_FUNCTION__))
;
5557 assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5557, __PRETTY_FUNCTION__))
;
5558
5559 SourceLocation Loc = D->getLocation();
5560 if (Loc.isInvalid())
5561 return;
5562
5563 // We only keep track of the file-level declarations of each file.
5564 if (!D->getLexicalDeclContext()->isFileContext())
5565 return;
5566 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5567 // a function/objc method, should not have TU as lexical context.
5568 // TemplateTemplateParmDecls that are part of an alias template, should not
5569 // have TU as lexical context.
5570 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5571 return;
5572
5573 SourceManager &SM = Context->getSourceManager();
5574 SourceLocation FileLoc = SM.getFileLoc(Loc);
5575 assert(SM.isLocalSourceLocation(FileLoc))((SM.isLocalSourceLocation(FileLoc)) ? static_cast<void>
(0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5575, __PRETTY_FUNCTION__))
;
5576 FileID FID;
5577 unsigned Offset;
5578 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5579 if (FID.isInvalid())
5580 return;
5581 assert(SM.getSLocEntry(FID).isFile())((SM.getSLocEntry(FID).isFile()) ? static_cast<void> (0
) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5581, __PRETTY_FUNCTION__))
;
5582
5583 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5584 if (!Info)
5585 Info = new DeclIDInFileInfo();
5586
5587 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5588 LocDeclIDsTy &Decls = Info->DeclIDs;
5589
5590 if (Decls.empty() || Decls.back().first <= Offset) {
5591 Decls.push_back(LocDecl);
5592 return;
5593 }
5594
5595 LocDeclIDsTy::iterator I =
5596 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5597
5598 Decls.insert(I, LocDecl);
5599}
5600
5601void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5602 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5603 Record->push_back(Name.getNameKind());
5604 switch (Name.getNameKind()) {
5605 case DeclarationName::Identifier:
5606 AddIdentifierRef(Name.getAsIdentifierInfo());
5607 break;
5608
5609 case DeclarationName::ObjCZeroArgSelector:
5610 case DeclarationName::ObjCOneArgSelector:
5611 case DeclarationName::ObjCMultiArgSelector:
5612 AddSelectorRef(Name.getObjCSelector());
5613 break;
5614
5615 case DeclarationName::CXXConstructorName:
5616 case DeclarationName::CXXDestructorName:
5617 case DeclarationName::CXXConversionFunctionName:
5618 AddTypeRef(Name.getCXXNameType());
5619 break;
5620
5621 case DeclarationName::CXXDeductionGuideName:
5622 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5623 break;
5624
5625 case DeclarationName::CXXOperatorName:
5626 Record->push_back(Name.getCXXOverloadedOperator());
5627 break;
5628
5629 case DeclarationName::CXXLiteralOperatorName:
5630 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5631 break;
5632
5633 case DeclarationName::CXXUsingDirective:
5634 // No extra data to emit
5635 break;
5636 }
5637}
5638
5639unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5640 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5641, __PRETTY_FUNCTION__))
5641 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5641, __PRETTY_FUNCTION__))
;
5642
5643 // Number the anonymous declarations within this context, if we've not
5644 // already done so.
5645 auto It = AnonymousDeclarationNumbers.find(D);
5646 if (It == AnonymousDeclarationNumbers.end()) {
5647 auto *DC = D->getLexicalDeclContext();
5648 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5649 AnonymousDeclarationNumbers[ND] = Number;
5650 });
5651
5652 It = AnonymousDeclarationNumbers.find(D);
5653 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5654, __PRETTY_FUNCTION__))
5654 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5654, __PRETTY_FUNCTION__))
;
5655 }
5656
5657 return It->second;
5658}
5659
5660void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5661 DeclarationName Name) {
5662 switch (Name.getNameKind()) {
5663 case DeclarationName::CXXConstructorName:
5664 case DeclarationName::CXXDestructorName:
5665 case DeclarationName::CXXConversionFunctionName:
5666 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5667 break;
5668
5669 case DeclarationName::CXXOperatorName:
5670 AddSourceLocation(SourceLocation::getFromRawEncoding(
5671 DNLoc.CXXOperatorName.BeginOpNameLoc));
5672 AddSourceLocation(
5673 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5674 break;
5675
5676 case DeclarationName::CXXLiteralOperatorName:
5677 AddSourceLocation(SourceLocation::getFromRawEncoding(
5678 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5679 break;
5680
5681 case DeclarationName::Identifier:
5682 case DeclarationName::ObjCZeroArgSelector:
5683 case DeclarationName::ObjCOneArgSelector:
5684 case DeclarationName::ObjCMultiArgSelector:
5685 case DeclarationName::CXXUsingDirective:
5686 case DeclarationName::CXXDeductionGuideName:
5687 break;
5688 }
5689}
5690
5691void ASTRecordWriter::AddDeclarationNameInfo(
5692 const DeclarationNameInfo &NameInfo) {
5693 AddDeclarationName(NameInfo.getName());
5694 AddSourceLocation(NameInfo.getLoc());
5695 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5696}
5697
5698void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5699 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5700 Record->push_back(Info.NumTemplParamLists);
5701 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5702 AddTemplateParameterList(Info.TemplParamLists[i]);
5703}
5704
5705void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5706 // Nested name specifiers usually aren't too long. I think that 8 would
5707 // typically accommodate the vast majority.
5708 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5709
5710 // Push each of the NNS's onto a stack for serialization in reverse order.
5711 while (NNS) {
5712 NestedNames.push_back(NNS);
5713 NNS = NNS->getPrefix();
5714 }
5715
5716 Record->push_back(NestedNames.size());
5717 while(!NestedNames.empty()) {
5718 NNS = NestedNames.pop_back_val();
5719 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5720 Record->push_back(Kind);
5721 switch (Kind) {
5722 case NestedNameSpecifier::Identifier:
5723 AddIdentifierRef(NNS->getAsIdentifier());
5724 break;
5725
5726 case NestedNameSpecifier::Namespace:
5727 AddDeclRef(NNS->getAsNamespace());
5728 break;
5729
5730 case NestedNameSpecifier::NamespaceAlias:
5731 AddDeclRef(NNS->getAsNamespaceAlias());
5732 break;
5733
5734 case NestedNameSpecifier::TypeSpec:
5735 case NestedNameSpecifier::TypeSpecWithTemplate:
5736 AddTypeRef(QualType(NNS->getAsType(), 0));
5737 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5738 break;
5739
5740 case NestedNameSpecifier::Global:
5741 // Don't need to write an associated value.
5742 break;
5743
5744 case NestedNameSpecifier::Super:
5745 AddDeclRef(NNS->getAsRecordDecl());
5746 break;
5747 }
5748 }
5749}
5750
5751void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5752 // Nested name specifiers usually aren't too long. I think that 8 would
5753 // typically accommodate the vast majority.
5754 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5755
5756 // Push each of the nested-name-specifiers's onto a stack for
5757 // serialization in reverse order.
5758 while (NNS) {
5759 NestedNames.push_back(NNS);
5760 NNS = NNS.getPrefix();
5761 }
5762
5763 Record->push_back(NestedNames.size());
5764 while(!NestedNames.empty()) {
5765 NNS = NestedNames.pop_back_val();
5766 NestedNameSpecifier::SpecifierKind Kind
5767 = NNS.getNestedNameSpecifier()->getKind();
5768 Record->push_back(Kind);
5769 switch (Kind) {
5770 case NestedNameSpecifier::Identifier:
5771 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5772 AddSourceRange(NNS.getLocalSourceRange());
5773 break;
5774
5775 case NestedNameSpecifier::Namespace:
5776 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5777 AddSourceRange(NNS.getLocalSourceRange());
5778 break;
5779
5780 case NestedNameSpecifier::NamespaceAlias:
5781 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5782 AddSourceRange(NNS.getLocalSourceRange());
5783 break;
5784
5785 case NestedNameSpecifier::TypeSpec:
5786 case NestedNameSpecifier::TypeSpecWithTemplate:
5787 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5788 AddTypeRef(NNS.getTypeLoc().getType());
5789 AddTypeLoc(NNS.getTypeLoc());
5790 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5791 break;
5792
5793 case NestedNameSpecifier::Global:
5794 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5795 break;
5796
5797 case NestedNameSpecifier::Super:
5798 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5799 AddSourceRange(NNS.getLocalSourceRange());
5800 break;
5801 }
5802 }
5803}
5804
5805void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5806 TemplateName::NameKind Kind = Name.getKind();
5807 Record->push_back(Kind);
5808 switch (Kind) {
5809 case TemplateName::Template:
5810 AddDeclRef(Name.getAsTemplateDecl());
5811 break;
5812
5813 case TemplateName::OverloadedTemplate: {
5814 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5815 Record->push_back(OvT->size());
5816 for (const auto &I : *OvT)
5817 AddDeclRef(I);
5818 break;
5819 }
5820
5821 case TemplateName::QualifiedTemplate: {
5822 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5823 AddNestedNameSpecifier(QualT->getQualifier());
5824 Record->push_back(QualT->hasTemplateKeyword());
5825 AddDeclRef(QualT->getTemplateDecl());
5826 break;
5827 }
5828
5829 case TemplateName::DependentTemplate: {
5830 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5831 AddNestedNameSpecifier(DepT->getQualifier());
5832 Record->push_back(DepT->isIdentifier());
5833 if (DepT->isIdentifier())
5834 AddIdentifierRef(DepT->getIdentifier());
5835 else
5836 Record->push_back(DepT->getOperator());
5837 break;
5838 }
5839
5840 case TemplateName::SubstTemplateTemplateParm: {
5841 SubstTemplateTemplateParmStorage *subst
5842 = Name.getAsSubstTemplateTemplateParm();
5843 AddDeclRef(subst->getParameter());
5844 AddTemplateName(subst->getReplacement());
5845 break;
5846 }
5847
5848 case TemplateName::SubstTemplateTemplateParmPack: {
5849 SubstTemplateTemplateParmPackStorage *SubstPack
5850 = Name.getAsSubstTemplateTemplateParmPack();
5851 AddDeclRef(SubstPack->getParameterPack());
5852 AddTemplateArgument(SubstPack->getArgumentPack());
5853 break;
5854 }
5855 }
5856}
5857
5858void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5859 Record->push_back(Arg.getKind());
5860 switch (Arg.getKind()) {
5861 case TemplateArgument::Null:
5862 break;
5863 case TemplateArgument::Type:
5864 AddTypeRef(Arg.getAsType());
5865 break;
5866 case TemplateArgument::Declaration:
5867 AddDeclRef(Arg.getAsDecl());
5868 AddTypeRef(Arg.getParamTypeForDecl());
5869 break;
5870 case TemplateArgument::NullPtr:
5871 AddTypeRef(Arg.getNullPtrType());
5872 break;
5873 case TemplateArgument::Integral:
5874 AddAPSInt(Arg.getAsIntegral());
5875 AddTypeRef(Arg.getIntegralType());
5876 break;
5877 case TemplateArgument::Template:
5878 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5879 break;
5880 case TemplateArgument::TemplateExpansion:
5881 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5882 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5883 Record->push_back(*NumExpansions + 1);
5884 else
5885 Record->push_back(0);
5886 break;
5887 case TemplateArgument::Expression:
5888 AddStmt(Arg.getAsExpr());
5889 break;
5890 case TemplateArgument::Pack:
5891 Record->push_back(Arg.pack_size());
5892 for (const auto &P : Arg.pack_elements())
5893 AddTemplateArgument(P);
5894 break;
5895 }
5896}
5897
5898void ASTRecordWriter::AddTemplateParameterList(
5899 const TemplateParameterList *TemplateParams) {
5900 assert(TemplateParams && "No TemplateParams!")((TemplateParams && "No TemplateParams!") ? static_cast
<void> (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5900, __PRETTY_FUNCTION__))
;
5901 AddSourceLocation(TemplateParams->getTemplateLoc());
5902 AddSourceLocation(TemplateParams->getLAngleLoc());
5903 AddSourceLocation(TemplateParams->getRAngleLoc());
5904 // TODO: Concepts
5905 Record->push_back(TemplateParams->size());
5906 for (const auto &P : *TemplateParams)
5907 AddDeclRef(P);
5908}
5909
5910/// Emit a template argument list.
5911void ASTRecordWriter::AddTemplateArgumentList(
5912 const TemplateArgumentList *TemplateArgs) {
5913 assert(TemplateArgs && "No TemplateArgs!")((TemplateArgs && "No TemplateArgs!") ? static_cast<
void> (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5913, __PRETTY_FUNCTION__))
;
5914 Record->push_back(TemplateArgs->size());
5915 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5916 AddTemplateArgument(TemplateArgs->get(i));
5917}
5918
5919void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5920 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5921 assert(ASTTemplArgList && "No ASTTemplArgList!")((ASTTemplArgList && "No ASTTemplArgList!") ? static_cast
<void> (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5921, __PRETTY_FUNCTION__))
;
5922 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5923 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5924 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5925 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5926 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5927 AddTemplateArgumentLoc(TemplArgs[i]);
5928}
5929
5930void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5931 Record->push_back(Set.size());
5932 for (ASTUnresolvedSet::const_iterator
5933 I = Set.begin(), E = Set.end(); I != E; ++I) {
5934 AddDeclRef(I.getDecl());
5935 Record->push_back(I.getAccess());
5936 }
5937}
5938
5939// FIXME: Move this out of the main ASTRecordWriter interface.
5940void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5941 Record->push_back(Base.isVirtual());
5942 Record->push_back(Base.isBaseOfClass());
5943 Record->push_back(Base.getAccessSpecifierAsWritten());
5944 Record->push_back(Base.getInheritConstructors());
5945 AddTypeSourceInfo(Base.getTypeSourceInfo());
5946 AddSourceRange(Base.getSourceRange());
5947 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5948 : SourceLocation());
5949}
5950
5951static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5952 ArrayRef<CXXBaseSpecifier> Bases) {
5953 ASTWriter::RecordData Record;
5954 ASTRecordWriter Writer(W, Record);
5955 Writer.push_back(Bases.size());
5956
5957 for (auto &Base : Bases)
5958 Writer.AddCXXBaseSpecifier(Base);
5959
5960 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5961}
5962
5963// FIXME: Move this out of the main ASTRecordWriter interface.
5964void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5965 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5966}
5967
5968static uint64_t
5969EmitCXXCtorInitializers(ASTWriter &W,
5970 ArrayRef<CXXCtorInitializer *> CtorInits) {
5971 ASTWriter::RecordData Record;
5972 ASTRecordWriter Writer(W, Record);
5973 Writer.push_back(CtorInits.size());
5974
5975 for (auto *Init : CtorInits) {
5976 if (Init->isBaseInitializer()) {
5977 Writer.push_back(CTOR_INITIALIZER_BASE);
5978 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5979 Writer.push_back(Init->isBaseVirtual());
5980 } else if (Init->isDelegatingInitializer()) {
5981 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5982 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5983 } else if (Init->isMemberInitializer()){
5984 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5985 Writer.AddDeclRef(Init->getMember());
5986 } else {
5987 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5988 Writer.AddDeclRef(Init->getIndirectMember());
5989 }
5990
5991 Writer.AddSourceLocation(Init->getMemberLocation());
5992 Writer.AddStmt(Init->getInit());
5993 Writer.AddSourceLocation(Init->getLParenLoc());
5994 Writer.AddSourceLocation(Init->getRParenLoc());
5995 Writer.push_back(Init->isWritten());
5996 if (Init->isWritten())
5997 Writer.push_back(Init->getSourceOrder());
5998 }
5999
6000 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
6001}
6002
6003// FIXME: Move this out of the main ASTRecordWriter interface.
6004void ASTRecordWriter::AddCXXCtorInitializers(
6005 ArrayRef<CXXCtorInitializer *> CtorInits) {
6006 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
6007}
6008
6009void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
6010 auto &Data = D->data();
6011 Record->push_back(Data.IsLambda);
6012 Record->push_back(Data.UserDeclaredConstructor);
6013 Record->push_back(Data.UserDeclaredSpecialMembers);
6014 Record->push_back(Data.Aggregate);
6015 Record->push_back(Data.PlainOldData);
6016 Record->push_back(Data.Empty);
6017 Record->push_back(Data.Polymorphic);
6018 Record->push_back(Data.Abstract);
6019 Record->push_back(Data.IsStandardLayout);
6020 Record->push_back(Data.IsCXX11StandardLayout);
6021 Record->push_back(Data.HasBasesWithFields);
6022 Record->push_back(Data.HasBasesWithNonStaticDataMembers);
6023 Record->push_back(Data.HasPrivateFields);
6024 Record->push_back(Data.HasProtectedFields);
6025 Record->push_back(Data.HasPublicFields);
6026 Record->push_back(Data.HasMutableFields);
6027 Record->push_back(Data.HasVariantMembers);
6028 Record->push_back(Data.HasOnlyCMembers);
6029 Record->push_back(Data.HasInClassInitializer);
6030 Record->push_back(Data.HasUninitializedReferenceMember);
6031 Record->push_back(Data.HasUninitializedFields);
6032 Record->push_back(Data.HasInheritedConstructor);
6033 Record->push_back(Data.HasInheritedAssignment);
6034 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
6035 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
6036 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
6037 Record->push_back(Data.NeedOverloadResolutionForDestructor);
6038 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
6039 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
6040 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
6041 Record->push_back(Data.DefaultedDestructorIsDeleted);
6042 Record->push_back(Data.HasTrivialSpecialMembers);
6043 Record->push_back(Data.HasTrivialSpecialMembersForCall);
6044 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
6045 Record->push_back(Data.DeclaredNonTrivialSpecialMembersForCall);
6046 Record->push_back(Data.HasIrrelevantDestructor);
6047 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
6048 Record->push_back(Data.HasDefaultedDefaultConstructor);
6049 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
6050 Record->push_back(Data.HasConstexprDefaultConstructor);
6051 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
6052 Record->push_back(Data.ComputedVisibleConversions);
6053 Record->push_back(Data.UserProvidedDefaultConstructor);
6054 Record->push_back(Data.DeclaredSpecialMembers);
6055 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
6056 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
6057 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
6058 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
6059 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6060
6061 // getODRHash will compute the ODRHash if it has not been previously computed.
6062 Record->push_back(D->getODRHash());
6063 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6064 Writer->WritingModule && !D->isDependentType();
6065 Record->push_back(ModulesDebugInfo);
6066 if (ModulesDebugInfo)
6067 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6068
6069 // IsLambda bit is already saved.
6070
6071 Record->push_back(Data.NumBases);
6072 if (Data.NumBases > 0)
6073 AddCXXBaseSpecifiers(Data.bases());
6074
6075 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6076 Record->push_back(Data.NumVBases);
6077 if (Data.NumVBases > 0)
6078 AddCXXBaseSpecifiers(Data.vbases());
6079
6080 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6081 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6082 // Data.Definition is the owning decl, no need to write it.
6083 AddDeclRef(D->getFirstFriend());
6084
6085 // Add lambda-specific data.
6086 if (Data.IsLambda) {
6087 auto &Lambda = D->getLambdaData();
6088 Record->push_back(Lambda.Dependent);
6089 Record->push_back(Lambda.IsGenericLambda);
6090 Record->push_back(Lambda.CaptureDefault);
6091 Record->push_back(Lambda.NumCaptures);
6092 Record->push_back(Lambda.NumExplicitCaptures);
6093 Record->push_back(Lambda.ManglingNumber);
6094 AddDeclRef(D->getLambdaContextDecl());
6095 AddTypeSourceInfo(Lambda.MethodTyInfo);
6096 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6097 const LambdaCapture &Capture = Lambda.Captures[I];
6098 AddSourceLocation(Capture.getLocation());
6099 Record->push_back(Capture.isImplicit());
6100 Record->push_back(Capture.getCaptureKind());
6101 switch (Capture.getCaptureKind()) {
6102 case LCK_StarThis:
6103 case LCK_This:
6104 case LCK_VLAType:
6105 break;
6106 case LCK_ByCopy:
6107 case LCK_ByRef:
6108 VarDecl *Var =
6109 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6110 AddDeclRef(Var);
6111 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6112 : SourceLocation());
6113 break;
6114 }
6115 }
6116 }
6117}
6118
6119void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6120 assert(Reader && "Cannot remove chain")((Reader && "Cannot remove chain") ? static_cast<void
> (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-8~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6120, __PRETTY_FUNCTION__))
;
6121 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6121, __PRETTY_FUNCTION__))
;
6122 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6123 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6124 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6125 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6126 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6127 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
6128 "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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6128, __PRETTY_FUNCTION__))
;
6129
6130 Chain = Reader;
6131
6132 // Note, this will get called multiple times, once one the reader starts up
6133 // and again each time it's done reading a PCH or module.
6134 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6135 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6136 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6137 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6138 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6139 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6140 NextDeclID = FirstDeclID;
6141 NextTypeID = FirstTypeID;
6142 NextIdentID = FirstIdentID;
6143 NextMacroID = FirstMacroID;
6144 NextSelectorID = FirstSelectorID;
6145 NextSubmoduleID = FirstSubmoduleID;
6146}
6147
6148void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6149 // Always keep the highest ID. See \p TypeRead() for more information.
6150 IdentID &StoredID = IdentifierIDs[II];
6151 if (ID > StoredID)
6152 StoredID = ID;
6153}
6154
6155void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6156 // Always keep the highest ID. See \p TypeRead() for more information.
6157 MacroID &StoredID = MacroIDs[MI];
6158 if (ID > StoredID)
6159 StoredID = ID;
6160}
6161
6162void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6163 // Always take the highest-numbered type index. This copes with an interesting
6164 // case for chained AST writing where we schedule writing the type and then,
6165 // later, deserialize the type from another AST. In this case, we want to
6166 // keep the higher-numbered entry so that we can properly write it out to
6167 // the AST file.
6168 TypeIdx &StoredIdx = TypeIdxs[T];
6169 if (Idx.getIndex() >= StoredIdx.getIndex())
6170 StoredIdx = Idx;
6171}
6172
6173void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6174 // Always keep the highest ID. See \p TypeRead() for more information.
6175 SelectorID &StoredID = SelectorIDs[S];
6176 if (ID > StoredID)
6177 StoredID = ID;
6178}
6179
6180void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
6181 MacroDefinitionRecord *MD) {
6182 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~svn345461/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6182, __PRETTY_FUNCTION__))
;
6183 MacroDefinitions[MD] = ID;
6184}
6185
6186void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
6187