1//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the ASTWriter class, which writes AST files.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ASTCommon.h"
14#include "ASTReaderInternals.h"
15#include "MultiOnDiskHashTable.h"
16#include "TemplateArgumentHasher.h"
17#include "clang/AST/ASTContext.h"
18#include "clang/AST/ASTUnresolvedSet.h"
19#include "clang/AST/AbstractTypeWriter.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/OpenACCClause.h"
34#include "clang/AST/OpenMPClause.h"
35#include "clang/AST/RawCommentList.h"
36#include "clang/AST/TemplateName.h"
37#include "clang/AST/Type.h"
38#include "clang/AST/TypeLoc.h"
39#include "clang/AST/TypeLocVisitor.h"
40#include "clang/Basic/Diagnostic.h"
41#include "clang/Basic/DiagnosticOptions.h"
42#include "clang/Basic/FileEntry.h"
43#include "clang/Basic/FileManager.h"
44#include "clang/Basic/FileSystemOptions.h"
45#include "clang/Basic/IdentifierTable.h"
46#include "clang/Basic/LLVM.h"
47#include "clang/Basic/Lambda.h"
48#include "clang/Basic/LangOptions.h"
49#include "clang/Basic/Module.h"
50#include "clang/Basic/ObjCRuntime.h"
51#include "clang/Basic/OpenACCKinds.h"
52#include "clang/Basic/OpenCLOptions.h"
53#include "clang/Basic/SourceLocation.h"
54#include "clang/Basic/SourceManager.h"
55#include "clang/Basic/SourceManagerInternals.h"
56#include "clang/Basic/Specifiers.h"
57#include "clang/Basic/TargetInfo.h"
58#include "clang/Basic/TargetOptions.h"
59#include "clang/Basic/Version.h"
60#include "clang/Lex/HeaderSearch.h"
61#include "clang/Lex/HeaderSearchOptions.h"
62#include "clang/Lex/MacroInfo.h"
63#include "clang/Lex/ModuleMap.h"
64#include "clang/Lex/PreprocessingRecord.h"
65#include "clang/Lex/Preprocessor.h"
66#include "clang/Lex/PreprocessorOptions.h"
67#include "clang/Lex/Token.h"
68#include "clang/Sema/IdentifierResolver.h"
69#include "clang/Sema/ObjCMethodList.h"
70#include "clang/Sema/Sema.h"
71#include "clang/Sema/SemaCUDA.h"
72#include "clang/Sema/SemaObjC.h"
73#include "clang/Sema/SemaRISCV.h"
74#include "clang/Sema/Weak.h"
75#include "clang/Serialization/ASTBitCodes.h"
76#include "clang/Serialization/ASTReader.h"
77#include "clang/Serialization/ASTRecordWriter.h"
78#include "clang/Serialization/InMemoryModuleCache.h"
79#include "clang/Serialization/ModuleCache.h"
80#include "clang/Serialization/ModuleFile.h"
81#include "clang/Serialization/ModuleFileExtension.h"
82#include "clang/Serialization/SerializationDiagnostic.h"
83#include "llvm/ADT/APFloat.h"
84#include "llvm/ADT/APInt.h"
85#include "llvm/ADT/ArrayRef.h"
86#include "llvm/ADT/DenseMap.h"
87#include "llvm/ADT/DenseSet.h"
88#include "llvm/ADT/PointerIntPair.h"
89#include "llvm/ADT/STLExtras.h"
90#include "llvm/ADT/ScopeExit.h"
91#include "llvm/ADT/SmallPtrSet.h"
92#include "llvm/ADT/SmallString.h"
93#include "llvm/ADT/SmallVector.h"
94#include "llvm/ADT/StringRef.h"
95#include "llvm/Bitstream/BitCodes.h"
96#include "llvm/Bitstream/BitstreamWriter.h"
97#include "llvm/Support/Compression.h"
98#include "llvm/Support/DJB.h"
99#include "llvm/Support/EndianStream.h"
100#include "llvm/Support/ErrorHandling.h"
101#include "llvm/Support/LEB128.h"
102#include "llvm/Support/MemoryBuffer.h"
103#include "llvm/Support/OnDiskHashTable.h"
104#include "llvm/Support/Path.h"
105#include "llvm/Support/SHA1.h"
106#include "llvm/Support/TimeProfiler.h"
107#include "llvm/Support/VersionTuple.h"
108#include "llvm/Support/VirtualFileSystem.h"
109#include "llvm/Support/raw_ostream.h"
110#include <algorithm>
111#include <cassert>
112#include <cstdint>
113#include <cstdlib>
114#include <cstring>
115#include <ctime>
116#include <limits>
117#include <memory>
118#include <optional>
119#include <queue>
120#include <tuple>
121#include <utility>
122#include <vector>
123
124using namespace clang;
125using namespace clang::serialization;
126
127template <typename T, typename Allocator>
128static StringRef bytes(const std::vector<T, Allocator> &v) {
129 if (v.empty()) return StringRef();
130 return StringRef(reinterpret_cast<const char*>(&v[0]),
131 sizeof(T) * v.size());
132}
133
134template <typename T>
135static StringRef bytes(const SmallVectorImpl<T> &v) {
136 return StringRef(reinterpret_cast<const char*>(v.data()),
137 sizeof(T) * v.size());
138}
139
140static std::string bytes(const std::vector<bool> &V) {
141 std::string Str;
142 Str.reserve(res_arg: V.size() / 8);
143 for (unsigned I = 0, E = V.size(); I < E;) {
144 char Byte = 0;
145 for (unsigned Bit = 0; Bit < 8 && I < E; ++Bit, ++I)
146 Byte |= V[I] << Bit;
147 Str += Byte;
148 }
149 return Str;
150}
151
152//===----------------------------------------------------------------------===//
153// Type serialization
154//===----------------------------------------------------------------------===//
155
156static TypeCode getTypeCodeForTypeClass(Type::TypeClass id) {
157 switch (id) {
158#define TYPE_BIT_CODE(CLASS_ID, CODE_ID, CODE_VALUE) \
159 case Type::CLASS_ID: return TYPE_##CODE_ID;
160#include "clang/Serialization/TypeBitCodes.def"
161 case Type::LateParsedAttr:
162 llvm_unreachable(
163 "should be replaced with a concrete type before serialization");
164 case Type::Builtin:
165 llvm_unreachable("shouldn't be serializing a builtin type this way");
166 }
167 llvm_unreachable("bad type kind");
168}
169
170namespace {
171
172struct AffectingModuleMaps {
173 llvm::DenseSet<FileID> DefinitionFileIDs;
174 llvm::DenseSet<const FileEntry *> DefinitionFiles;
175};
176
177std::optional<AffectingModuleMaps>
178GetAffectingModuleMaps(const Preprocessor &PP, Module *RootModule) {
179 if (!PP.getHeaderSearchInfo()
180 .getHeaderSearchOpts()
181 .ModulesPruneNonAffectingModuleMaps)
182 return std::nullopt;
183
184 const HeaderSearch &HS = PP.getHeaderSearchInfo();
185 const SourceManager &SM = PP.getSourceManager();
186 const ModuleMap &MM = HS.getModuleMap();
187
188 // Module maps used only by textual headers are special. Their FileID is
189 // non-affecting, but their FileEntry is (i.e. must be written as InputFile).
190 enum AffectedReason : bool {
191 AR_TextualHeader = 0,
192 AR_ImportOrTextualHeader = 1,
193 };
194 auto AssignMostImportant = [](AffectedReason &LHS, AffectedReason RHS) {
195 LHS = std::max(a: LHS, b: RHS);
196 };
197 llvm::DenseMap<FileID, AffectedReason> ModuleMaps;
198 llvm::DenseMap<const Module *, AffectedReason> ProcessedModules;
199 auto CollectModuleMapsForHierarchy = [&](const Module *M,
200 AffectedReason Reason) {
201 M = M->getTopLevelModule();
202
203 // We need to process the header either when it was not present or when we
204 // previously flagged module map as textual headers and now we found a
205 // proper import.
206 if (auto [It, Inserted] = ProcessedModules.insert(KV: {M, Reason});
207 !Inserted && Reason <= It->second) {
208 return;
209 } else {
210 It->second = Reason;
211 }
212
213 std::queue<const Module *> Q;
214 Q.push(x: M);
215 while (!Q.empty()) {
216 const Module *Mod = Q.front();
217 Q.pop();
218
219 // The containing module map is affecting, because it's being pointed
220 // into by Module::DefinitionLoc.
221 if (auto F = MM.getContainingModuleMapFileID(Module: Mod); F.isValid())
222 AssignMostImportant(ModuleMaps[F], Reason);
223 // For inferred modules, the module map that allowed inferring is not
224 // related to the virtual containing module map file. It did affect the
225 // compilation, though.
226 if (auto UniqF = MM.getModuleMapFileIDForUniquing(M: Mod); UniqF.isValid())
227 AssignMostImportant(ModuleMaps[UniqF], Reason);
228
229 for (Module *SubM : Mod->submodules())
230 Q.push(x: SubM);
231 }
232 };
233
234 // Handle all the affecting modules referenced from the root module.
235
236 CollectModuleMapsForHierarchy(RootModule, AR_ImportOrTextualHeader);
237
238 std::queue<const Module *> Q;
239 Q.push(x: RootModule);
240 while (!Q.empty()) {
241 const Module *CurrentModule = Q.front();
242 Q.pop();
243
244 for (const Module *ImportedModule : CurrentModule->Imports)
245 CollectModuleMapsForHierarchy(ImportedModule, AR_ImportOrTextualHeader);
246 for (const Module *UndeclaredModule : CurrentModule->UndeclaredUses)
247 CollectModuleMapsForHierarchy(UndeclaredModule, AR_ImportOrTextualHeader);
248
249 for (Module *M : CurrentModule->submodules())
250 Q.push(x: M);
251 }
252
253 // Handle textually-included headers that belong to other modules.
254 HS.forEachExistingLocalFileInfo(
255 Fn: [&](FileEntryRef File, const HeaderFileInfo &HFI) {
256 if (!HFI.isCompilingModuleHeader && HFI.isModuleHeader)
257 return; // Modular header, handled in the above module-based loop.
258 if (!HFI.isCompilingModuleHeader && !HFI.IsLocallyIncluded)
259 return; // Non-modular header not included locally is not affecting.
260
261 for (const auto &KH : HS.findResolvedModulesForHeader(File))
262 if (const Module *M = KH.getModule())
263 CollectModuleMapsForHierarchy(M, AR_TextualHeader);
264 });
265
266 // FIXME: This algorithm is not correct for module map hierarchies where
267 // module map file defining a (sub)module of a top-level module X includes
268 // a module map file that defines a (sub)module of another top-level module Y.
269 // Whenever X is affecting and Y is not, "replaying" this PCM file will fail
270 // when parsing module map files for X due to not knowing about the `extern`
271 // module map for Y.
272 //
273 // We don't have a good way to fix it here. We could mark all children of
274 // affecting module map files as being affecting as well, but that's
275 // expensive. SourceManager does not model the edge from parent to child
276 // SLocEntries, so instead, we would need to iterate over leaf module map
277 // files, walk up their include hierarchy and check whether we arrive at an
278 // affecting module map.
279 //
280 // Instead of complicating and slowing down this function, we should probably
281 // just ban module map hierarchies where module map defining a (sub)module X
282 // includes a module map defining a module that's not a submodule of X.
283
284 llvm::DenseSet<const FileEntry *> ModuleFileEntries;
285 llvm::DenseSet<FileID> ModuleFileIDs;
286 for (auto [FID, Reason] : ModuleMaps) {
287 if (Reason == AR_ImportOrTextualHeader)
288 ModuleFileIDs.insert(V: FID);
289 if (auto *FE = SM.getFileEntryForID(FID))
290 ModuleFileEntries.insert(V: FE);
291 }
292
293 AffectingModuleMaps R;
294 R.DefinitionFileIDs = std::move(ModuleFileIDs);
295 R.DefinitionFiles = std::move(ModuleFileEntries);
296 return std::move(R);
297}
298
299class ASTTypeWriter {
300 ASTWriter &Writer;
301 ASTWriter::RecordData Record;
302 ASTRecordWriter BasicWriter;
303
304public:
305 ASTTypeWriter(ASTContext &Context, ASTWriter &Writer)
306 : Writer(Writer), BasicWriter(Context, Writer, Record) {}
307
308 uint64_t write(QualType T) {
309 if (T.hasLocalNonFastQualifiers()) {
310 Qualifiers Qs = T.getLocalQualifiers();
311 BasicWriter.writeQualType(T: T.getLocalUnqualifiedType());
312 BasicWriter.writeQualifiers(value: Qs);
313 return BasicWriter.Emit(Code: TYPE_EXT_QUAL, Abbrev: Writer.getTypeExtQualAbbrev());
314 }
315
316 const Type *typePtr = T.getTypePtr();
317 serialization::AbstractTypeWriter<ASTRecordWriter> atw(BasicWriter);
318 atw.write(node: typePtr);
319 return BasicWriter.Emit(Code: getTypeCodeForTypeClass(id: typePtr->getTypeClass()),
320 /*abbrev*/ Abbrev: 0);
321 }
322};
323
324class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
325 ASTRecordWriter &Record;
326
327 void addSourceLocation(SourceLocation Loc) { Record.AddSourceLocation(Loc); }
328 void addSourceRange(SourceRange Range) { Record.AddSourceRange(Range); }
329
330public:
331 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
332
333#define ABSTRACT_TYPELOC(CLASS, PARENT)
334#define TYPELOC(CLASS, PARENT) \
335 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
336#include "clang/AST/TypeLocNodes.def"
337
338 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
339 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
340 void VisitTagTypeLoc(TagTypeLoc TL);
341};
342
343} // namespace
344
345void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
346 // nothing to do
347}
348
349void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
350 addSourceLocation(Loc: TL.getBuiltinLoc());
351 if (TL.needsExtraLocalData()) {
352 Record.push_back(N: TL.getWrittenTypeSpec());
353 Record.push_back(N: static_cast<uint64_t>(TL.getWrittenSignSpec()));
354 Record.push_back(N: static_cast<uint64_t>(TL.getWrittenWidthSpec()));
355 Record.push_back(N: TL.hasModeAttr());
356 }
357}
358
359void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
360 addSourceLocation(Loc: TL.getNameLoc());
361}
362
363void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
364 addSourceLocation(Loc: TL.getStarLoc());
365}
366
367void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
368 // nothing to do
369}
370
371void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
372 // nothing to do
373}
374
375void TypeLocWriter::VisitArrayParameterTypeLoc(ArrayParameterTypeLoc TL) {
376 // nothing to do
377}
378
379void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
380 addSourceLocation(Loc: TL.getCaretLoc());
381}
382
383void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
384 addSourceLocation(Loc: TL.getAmpLoc());
385}
386
387void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
388 addSourceLocation(Loc: TL.getAmpAmpLoc());
389}
390
391void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
392 addSourceLocation(Loc: TL.getStarLoc());
393 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
394}
395
396void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
397 addSourceLocation(Loc: TL.getLBracketLoc());
398 addSourceLocation(Loc: TL.getRBracketLoc());
399 Record.push_back(N: TL.getSizeExpr() ? 1 : 0);
400 if (TL.getSizeExpr())
401 Record.AddStmt(S: TL.getSizeExpr());
402}
403
404void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
405 VisitArrayTypeLoc(TL);
406}
407
408void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
409 VisitArrayTypeLoc(TL);
410}
411
412void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
413 VisitArrayTypeLoc(TL);
414}
415
416void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
417 DependentSizedArrayTypeLoc TL) {
418 VisitArrayTypeLoc(TL);
419}
420
421void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
422 DependentAddressSpaceTypeLoc TL) {
423 addSourceLocation(Loc: TL.getAttrNameLoc());
424 SourceRange range = TL.getAttrOperandParensRange();
425 addSourceLocation(Loc: range.getBegin());
426 addSourceLocation(Loc: range.getEnd());
427 Record.AddStmt(S: TL.getAttrExprOperand());
428}
429
430void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
431 DependentSizedExtVectorTypeLoc TL) {
432 addSourceLocation(Loc: TL.getNameLoc());
433}
434
435void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
436 addSourceLocation(Loc: TL.getNameLoc());
437}
438
439void TypeLocWriter::VisitDependentVectorTypeLoc(
440 DependentVectorTypeLoc TL) {
441 addSourceLocation(Loc: TL.getNameLoc());
442}
443
444void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
445 addSourceLocation(Loc: TL.getNameLoc());
446}
447
448void TypeLocWriter::VisitConstantMatrixTypeLoc(ConstantMatrixTypeLoc TL) {
449 addSourceLocation(Loc: TL.getAttrNameLoc());
450 SourceRange range = TL.getAttrOperandParensRange();
451 addSourceLocation(Loc: range.getBegin());
452 addSourceLocation(Loc: range.getEnd());
453 Record.AddStmt(S: TL.getAttrRowOperand());
454 Record.AddStmt(S: TL.getAttrColumnOperand());
455}
456
457void TypeLocWriter::VisitDependentSizedMatrixTypeLoc(
458 DependentSizedMatrixTypeLoc TL) {
459 addSourceLocation(Loc: TL.getAttrNameLoc());
460 SourceRange range = TL.getAttrOperandParensRange();
461 addSourceLocation(Loc: range.getBegin());
462 addSourceLocation(Loc: range.getEnd());
463 Record.AddStmt(S: TL.getAttrRowOperand());
464 Record.AddStmt(S: TL.getAttrColumnOperand());
465}
466
467void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
468 addSourceLocation(Loc: TL.getLocalRangeBegin());
469 addSourceLocation(Loc: TL.getLParenLoc());
470 addSourceLocation(Loc: TL.getRParenLoc());
471 addSourceRange(Range: TL.getExceptionSpecRange());
472 addSourceLocation(Loc: TL.getLocalRangeEnd());
473 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
474 Record.AddDeclRef(D: TL.getParam(i));
475}
476
477void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
478 VisitFunctionTypeLoc(TL);
479}
480
481void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
482 VisitFunctionTypeLoc(TL);
483}
484
485void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
486 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
487 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
488 addSourceLocation(Loc: TL.getNameLoc());
489}
490
491void TypeLocWriter::VisitUsingTypeLoc(UsingTypeLoc TL) {
492 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
493 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
494 addSourceLocation(Loc: TL.getNameLoc());
495}
496
497void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
498 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
499 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
500 addSourceLocation(Loc: TL.getNameLoc());
501}
502
503void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
504 if (TL.getNumProtocols()) {
505 addSourceLocation(Loc: TL.getProtocolLAngleLoc());
506 addSourceLocation(Loc: TL.getProtocolRAngleLoc());
507 }
508 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
509 addSourceLocation(Loc: TL.getProtocolLoc(i));
510}
511
512void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
513 addSourceLocation(Loc: TL.getTypeofLoc());
514 addSourceLocation(Loc: TL.getLParenLoc());
515 addSourceLocation(Loc: TL.getRParenLoc());
516}
517
518void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
519 addSourceLocation(Loc: TL.getTypeofLoc());
520 addSourceLocation(Loc: TL.getLParenLoc());
521 addSourceLocation(Loc: TL.getRParenLoc());
522 Record.AddTypeSourceInfo(TInfo: TL.getUnmodifiedTInfo());
523}
524
525void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
526 addSourceLocation(Loc: TL.getDecltypeLoc());
527 addSourceLocation(Loc: TL.getRParenLoc());
528}
529
530void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
531 addSourceLocation(Loc: TL.getKWLoc());
532 addSourceLocation(Loc: TL.getLParenLoc());
533 addSourceLocation(Loc: TL.getRParenLoc());
534 Record.AddTypeSourceInfo(TInfo: TL.getUnderlyingTInfo());
535}
536
537void ASTRecordWriter::AddConceptReference(const ConceptReference *CR) {
538 assert(CR);
539 AddNestedNameSpecifierLoc(NNS: CR->getNestedNameSpecifierLoc());
540 AddSourceLocation(Loc: CR->getTemplateKWLoc());
541 AddDeclarationNameInfo(NameInfo: CR->getConceptNameInfo());
542 AddDeclRef(D: CR->getFoundDecl());
543 AddTemplateName(Name: CR->getNamedConcept());
544 push_back(N: CR->getTemplateArgsAsWritten() != nullptr);
545 if (CR->getTemplateArgsAsWritten())
546 AddASTTemplateArgumentListInfo(ASTTemplArgList: CR->getTemplateArgsAsWritten());
547}
548
549void TypeLocWriter::VisitPackIndexingTypeLoc(PackIndexingTypeLoc TL) {
550 addSourceLocation(Loc: TL.getEllipsisLoc());
551}
552
553void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
554 addSourceLocation(Loc: TL.getNameLoc());
555 auto *CR = TL.getConceptReference();
556 Record.push_back(N: TL.isConstrained() && CR);
557 if (TL.isConstrained() && CR)
558 Record.AddConceptReference(CR);
559 Record.push_back(N: TL.isDecltypeAuto());
560 if (TL.isDecltypeAuto())
561 addSourceLocation(Loc: TL.getRParenLoc());
562}
563
564void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
565 DeducedTemplateSpecializationTypeLoc TL) {
566 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
567 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
568 addSourceLocation(Loc: TL.getTemplateNameLoc());
569}
570
571void TypeLocWriter::VisitTagTypeLoc(TagTypeLoc TL) {
572 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
573 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
574 addSourceLocation(Loc: TL.getNameLoc());
575}
576
577void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
578 VisitTagTypeLoc(TL);
579}
580
581void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
582 VisitTagTypeLoc(TL);
583}
584
585void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) { VisitTagTypeLoc(TL); }
586
587void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
588 Record.AddAttr(A: TL.getAttr());
589}
590
591void TypeLocWriter::VisitCountAttributedTypeLoc(CountAttributedTypeLoc TL) {
592 // Nothing to do
593}
594
595void TypeLocWriter::VisitLateParsedAttrTypeLoc(LateParsedAttrTypeLoc TL) {
596 llvm_unreachable(
597 "should be replaced with a concrete type before serialization");
598}
599
600void TypeLocWriter::VisitBTFTagAttributedTypeLoc(BTFTagAttributedTypeLoc TL) {
601 // Nothing to do.
602}
603
604void TypeLocWriter::VisitOverflowBehaviorTypeLoc(OverflowBehaviorTypeLoc TL) {
605 addSourceLocation(Loc: TL.getAttrLoc());
606}
607
608void TypeLocWriter::VisitHLSLAttributedResourceTypeLoc(
609 HLSLAttributedResourceTypeLoc TL) {
610 // Nothing to do.
611}
612
613void TypeLocWriter::VisitHLSLInlineSpirvTypeLoc(HLSLInlineSpirvTypeLoc TL) {
614 // Nothing to do.
615}
616
617void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
618 addSourceLocation(Loc: TL.getNameLoc());
619}
620
621void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
622 SubstTemplateTypeParmTypeLoc TL) {
623 addSourceLocation(Loc: TL.getNameLoc());
624}
625
626void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
627 SubstTemplateTypeParmPackTypeLoc TL) {
628 addSourceLocation(Loc: TL.getNameLoc());
629}
630
631void TypeLocWriter::VisitSubstBuiltinTemplatePackTypeLoc(
632 SubstBuiltinTemplatePackTypeLoc TL) {
633 addSourceLocation(Loc: TL.getNameLoc());
634}
635
636void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
637 TemplateSpecializationTypeLoc TL) {
638 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
639 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
640 addSourceLocation(Loc: TL.getTemplateKeywordLoc());
641 addSourceLocation(Loc: TL.getTemplateNameLoc());
642 addSourceLocation(Loc: TL.getLAngleLoc());
643 addSourceLocation(Loc: TL.getRAngleLoc());
644 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
645 Record.AddTemplateArgumentLocInfo(Arg: TL.getArgLoc(i));
646}
647
648void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
649 addSourceLocation(Loc: TL.getLParenLoc());
650 addSourceLocation(Loc: TL.getRParenLoc());
651}
652
653void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
654 addSourceLocation(Loc: TL.getExpansionLoc());
655}
656
657void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
658 addSourceLocation(Loc: TL.getElaboratedKeywordLoc());
659 Record.AddNestedNameSpecifierLoc(NNS: TL.getQualifierLoc());
660 addSourceLocation(Loc: TL.getNameLoc());
661}
662
663void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
664 addSourceLocation(Loc: TL.getEllipsisLoc());
665}
666
667void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
668 addSourceLocation(Loc: TL.getNameLoc());
669 addSourceLocation(Loc: TL.getNameEndLoc());
670}
671
672void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
673 Record.push_back(N: TL.hasBaseTypeAsWritten());
674 addSourceLocation(Loc: TL.getTypeArgsLAngleLoc());
675 addSourceLocation(Loc: TL.getTypeArgsRAngleLoc());
676 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
677 Record.AddTypeSourceInfo(TInfo: TL.getTypeArgTInfo(i));
678 addSourceLocation(Loc: TL.getProtocolLAngleLoc());
679 addSourceLocation(Loc: TL.getProtocolRAngleLoc());
680 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
681 addSourceLocation(Loc: TL.getProtocolLoc(i));
682}
683
684void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
685 addSourceLocation(Loc: TL.getStarLoc());
686}
687
688void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
689 addSourceLocation(Loc: TL.getKWLoc());
690 addSourceLocation(Loc: TL.getLParenLoc());
691 addSourceLocation(Loc: TL.getRParenLoc());
692}
693
694void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
695 addSourceLocation(Loc: TL.getKWLoc());
696}
697void TypeLocWriter::VisitBitIntTypeLoc(clang::BitIntTypeLoc TL) {
698 addSourceLocation(Loc: TL.getNameLoc());
699}
700void TypeLocWriter::VisitDependentBitIntTypeLoc(
701 clang::DependentBitIntTypeLoc TL) {
702 addSourceLocation(Loc: TL.getNameLoc());
703}
704
705void TypeLocWriter::VisitPredefinedSugarTypeLoc(
706 clang::PredefinedSugarTypeLoc TL) {
707 // Nothing to do.
708}
709
710void ASTWriter::WriteTypeAbbrevs() {
711 using namespace llvm;
712
713 std::shared_ptr<BitCodeAbbrev> Abv;
714
715 // Abbreviation for TYPE_EXT_QUAL
716 Abv = std::make_shared<BitCodeAbbrev>();
717 Abv->Add(OpInfo: BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
718 Abv->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
719 Abv->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
720 TypeExtQualAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
721}
722
723//===----------------------------------------------------------------------===//
724// ASTWriter Implementation
725//===----------------------------------------------------------------------===//
726
727static void EmitBlockID(unsigned ID, const char *Name,
728 llvm::BitstreamWriter &Stream,
729 ASTWriter::RecordDataImpl &Record) {
730 Record.clear();
731 Record.push_back(Elt: ID);
732 Stream.EmitRecord(Code: llvm::bitc::BLOCKINFO_CODE_SETBID, Vals: Record);
733
734 // Emit the block name if present.
735 if (!Name || Name[0] == 0)
736 return;
737 Record.clear();
738 while (*Name)
739 Record.push_back(Elt: *Name++);
740 Stream.EmitRecord(Code: llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Vals: Record);
741}
742
743static void EmitRecordID(unsigned ID, const char *Name,
744 llvm::BitstreamWriter &Stream,
745 ASTWriter::RecordDataImpl &Record) {
746 Record.clear();
747 Record.push_back(Elt: ID);
748 while (*Name)
749 Record.push_back(Elt: *Name++);
750 Stream.EmitRecord(Code: llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Vals: Record);
751}
752
753static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
754 ASTWriter::RecordDataImpl &Record) {
755#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
756 RECORD(STMT_STOP);
757 RECORD(STMT_NULL_PTR);
758 RECORD(STMT_REF_PTR);
759 RECORD(STMT_NULL);
760 RECORD(STMT_COMPOUND);
761 RECORD(STMT_CASE);
762 RECORD(STMT_DEFAULT);
763 RECORD(STMT_LABEL);
764 RECORD(STMT_ATTRIBUTED);
765 RECORD(STMT_IF);
766 RECORD(STMT_SWITCH);
767 RECORD(STMT_WHILE);
768 RECORD(STMT_DO);
769 RECORD(STMT_FOR);
770 RECORD(STMT_GOTO);
771 RECORD(STMT_INDIRECT_GOTO);
772 RECORD(STMT_CONTINUE);
773 RECORD(STMT_BREAK);
774 RECORD(STMT_RETURN);
775 RECORD(STMT_DECL);
776 RECORD(STMT_GCCASM);
777 RECORD(STMT_MSASM);
778 RECORD(EXPR_PREDEFINED);
779 RECORD(EXPR_DECL_REF);
780 RECORD(EXPR_INTEGER_LITERAL);
781 RECORD(EXPR_FIXEDPOINT_LITERAL);
782 RECORD(EXPR_FLOATING_LITERAL);
783 RECORD(EXPR_IMAGINARY_LITERAL);
784 RECORD(EXPR_STRING_LITERAL);
785 RECORD(EXPR_CHARACTER_LITERAL);
786 RECORD(EXPR_PAREN);
787 RECORD(EXPR_PAREN_LIST);
788 RECORD(EXPR_UNARY_OPERATOR);
789 RECORD(EXPR_SIZEOF_ALIGN_OF);
790 RECORD(EXPR_ARRAY_SUBSCRIPT);
791 RECORD(EXPR_CALL);
792 RECORD(EXPR_MEMBER);
793 RECORD(EXPR_BINARY_OPERATOR);
794 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
795 RECORD(EXPR_CONDITIONAL_OPERATOR);
796 RECORD(EXPR_IMPLICIT_CAST);
797 RECORD(EXPR_CSTYLE_CAST);
798 RECORD(EXPR_COMPOUND_LITERAL);
799 RECORD(EXPR_EXT_VECTOR_ELEMENT);
800 RECORD(EXPR_INIT_LIST);
801 RECORD(EXPR_DESIGNATED_INIT);
802 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
803 RECORD(EXPR_IMPLICIT_VALUE_INIT);
804 RECORD(EXPR_NO_INIT);
805 RECORD(EXPR_VA_ARG);
806 RECORD(EXPR_ADDR_LABEL);
807 RECORD(EXPR_STMT);
808 RECORD(EXPR_CHOOSE);
809 RECORD(EXPR_GNU_NULL);
810 RECORD(EXPR_SHUFFLE_VECTOR);
811 RECORD(EXPR_BLOCK);
812 RECORD(EXPR_GENERIC_SELECTION);
813 RECORD(EXPR_OBJC_STRING_LITERAL);
814 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
815 RECORD(EXPR_OBJC_ARRAY_LITERAL);
816 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
817 RECORD(EXPR_OBJC_ENCODE);
818 RECORD(EXPR_OBJC_SELECTOR_EXPR);
819 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
820 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
821 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
822 RECORD(EXPR_OBJC_KVC_REF_EXPR);
823 RECORD(EXPR_OBJC_MESSAGE_EXPR);
824 RECORD(STMT_OBJC_FOR_COLLECTION);
825 RECORD(STMT_OBJC_CATCH);
826 RECORD(STMT_OBJC_FINALLY);
827 RECORD(STMT_OBJC_AT_TRY);
828 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
829 RECORD(STMT_OBJC_AT_THROW);
830 RECORD(EXPR_OBJC_BOOL_LITERAL);
831 RECORD(STMT_CXX_CATCH);
832 RECORD(STMT_CXX_TRY);
833 RECORD(STMT_CXX_FOR_RANGE);
834 RECORD(EXPR_CXX_OPERATOR_CALL);
835 RECORD(EXPR_CXX_MEMBER_CALL);
836 RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
837 RECORD(EXPR_CXX_CONSTRUCT);
838 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
839 RECORD(EXPR_CXX_STATIC_CAST);
840 RECORD(EXPR_CXX_DYNAMIC_CAST);
841 RECORD(EXPR_CXX_REINTERPRET_CAST);
842 RECORD(EXPR_CXX_CONST_CAST);
843 RECORD(EXPR_CXX_ADDRSPACE_CAST);
844 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
845 RECORD(EXPR_USER_DEFINED_LITERAL);
846 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
847 RECORD(EXPR_CXX_BOOL_LITERAL);
848 RECORD(EXPR_CXX_PAREN_LIST_INIT);
849 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
850 RECORD(EXPR_CXX_TYPEID_EXPR);
851 RECORD(EXPR_CXX_TYPEID_TYPE);
852 RECORD(EXPR_CXX_THIS);
853 RECORD(EXPR_CXX_THROW);
854 RECORD(EXPR_CXX_DEFAULT_ARG);
855 RECORD(EXPR_CXX_DEFAULT_INIT);
856 RECORD(EXPR_CXX_BIND_TEMPORARY);
857 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
858 RECORD(EXPR_CXX_NEW);
859 RECORD(EXPR_CXX_DELETE);
860 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
861 RECORD(EXPR_EXPR_WITH_CLEANUPS);
862 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
863 RECORD(EXPR_DEPENDENT_TEMPLATE_ID);
864 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
865 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
866 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
867 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
868 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
869 RECORD(EXPR_CXX_NOEXCEPT);
870 RECORD(EXPR_OPAQUE_VALUE);
871 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
872 RECORD(EXPR_TYPE_TRAIT);
873 RECORD(EXPR_ARRAY_TYPE_TRAIT);
874 RECORD(EXPR_PACK_EXPANSION);
875 RECORD(EXPR_SIZEOF_PACK);
876 RECORD(EXPR_PACK_INDEXING);
877 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
878 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
879 RECORD(EXPR_FUNCTION_PARM_PACK);
880 RECORD(EXPR_MATERIALIZE_TEMPORARY);
881 RECORD(EXPR_CUDA_KERNEL_CALL);
882 RECORD(EXPR_CXX_UUIDOF_EXPR);
883 RECORD(EXPR_CXX_UUIDOF_TYPE);
884 RECORD(EXPR_LAMBDA);
885#undef RECORD
886}
887
888void ASTWriter::WriteBlockInfoBlock() {
889 RecordData Record;
890 Stream.EnterBlockInfoBlock();
891
892#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
893#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
894
895 // Control Block.
896 BLOCK(CONTROL_BLOCK);
897 RECORD(METADATA);
898 RECORD(MODULE_NAME);
899 RECORD(MODULE_DIRECTORY);
900 RECORD(MODULE_MAP_FILE);
901 RECORD(IMPORT);
902 RECORD(ORIGINAL_FILE);
903 RECORD(ORIGINAL_FILE_ID);
904 RECORD(INPUT_FILE_OFFSETS);
905
906 BLOCK(OPTIONS_BLOCK);
907 RECORD(LANGUAGE_OPTIONS);
908 RECORD(CODEGEN_OPTIONS);
909 RECORD(TARGET_OPTIONS);
910 RECORD(FILE_SYSTEM_OPTIONS);
911 RECORD(HEADER_SEARCH_OPTIONS);
912 RECORD(PREPROCESSOR_OPTIONS);
913
914 BLOCK(INPUT_FILES_BLOCK);
915 RECORD(INPUT_FILE);
916 RECORD(INPUT_FILE_HASH);
917
918 // AST Top-Level Block.
919 BLOCK(AST_BLOCK);
920 RECORD(SUBMODULE_METADATA);
921 RECORD(TYPE_OFFSET);
922 RECORD(DECL_OFFSET);
923 RECORD(IDENTIFIER_OFFSET);
924 RECORD(IDENTIFIER_TABLE);
925 RECORD(EAGERLY_DESERIALIZED_DECLS);
926 RECORD(MODULAR_CODEGEN_DECLS);
927 RECORD(SPECIAL_TYPES);
928 RECORD(STATISTICS);
929 RECORD(TENTATIVE_DEFINITIONS);
930 RECORD(SELECTOR_OFFSETS);
931 RECORD(METHOD_POOL);
932 RECORD(PP_COUNTER_VALUE);
933 RECORD(SOURCE_LOCATION_OFFSETS);
934 RECORD(EXT_VECTOR_DECLS);
935 RECORD(UNUSED_FILESCOPED_DECLS);
936 RECORD(PPD_ENTITIES_OFFSETS);
937 RECORD(VTABLE_USES);
938 RECORD(PPD_SKIPPED_RANGES);
939 RECORD(REFERENCED_SELECTOR_POOL);
940 RECORD(TU_UPDATE_LEXICAL);
941 RECORD(SEMA_DECL_REFS);
942 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
943 RECORD(EXTNAME_UNDECLARED_IDENTIFIERS);
944 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
945 RECORD(UPDATE_VISIBLE);
946 RECORD(DELAYED_NAMESPACE_LEXICAL_VISIBLE_RECORD);
947 RECORD(RELATED_DECLS_MAP);
948 RECORD(DECL_UPDATE_OFFSETS);
949 RECORD(DECL_UPDATES);
950 RECORD(CUDA_SPECIAL_DECL_REFS);
951 RECORD(HEADER_SEARCH_TABLE);
952 RECORD(FP_PRAGMA_OPTIONS);
953 RECORD(OPENCL_EXTENSIONS);
954 RECORD(OPENCL_EXTENSION_TYPES);
955 RECORD(OPENCL_EXTENSION_DECLS);
956 RECORD(DELEGATING_CTORS);
957 RECORD(KNOWN_NAMESPACES);
958 RECORD(MODULE_OFFSET_MAP);
959 RECORD(SOURCE_MANAGER_LINE_TABLE);
960 RECORD(OBJC_CATEGORIES_MAP);
961 RECORD(FILE_SORTED_DECLS);
962 RECORD(IMPORTED_MODULES);
963 RECORD(OBJC_CATEGORIES);
964 RECORD(MACRO_OFFSET);
965 RECORD(INTERESTING_IDENTIFIERS);
966 RECORD(UNDEFINED_BUT_USED);
967 RECORD(LATE_PARSED_TEMPLATE);
968 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
969 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
970 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
971 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
972 RECORD(DELETE_EXPRS_TO_ANALYZE);
973 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
974 RECORD(PP_CONDITIONAL_STACK);
975 RECORD(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS);
976 RECORD(PP_ASSUME_NONNULL_LOC);
977 RECORD(PP_UNSAFE_BUFFER_USAGE);
978 RECORD(VTABLES_TO_EMIT);
979 RECORD(RISCV_VECTOR_INTRINSICS_PRAGMA);
980
981 // SourceManager Block.
982 BLOCK(SOURCE_MANAGER_BLOCK);
983 RECORD(SM_SLOC_FILE_ENTRY);
984 RECORD(SM_SLOC_BUFFER_ENTRY);
985 RECORD(SM_SLOC_BUFFER_BLOB);
986 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
987 RECORD(SM_SLOC_EXPANSION_ENTRY);
988
989 // Preprocessor Block.
990 BLOCK(PREPROCESSOR_BLOCK);
991 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
992 RECORD(PP_MACRO_FUNCTION_LIKE);
993 RECORD(PP_MACRO_OBJECT_LIKE);
994 RECORD(PP_MODULE_MACRO);
995 RECORD(PP_TOKEN);
996
997 // Submodule Block.
998 BLOCK(SUBMODULE_BLOCK);
999 RECORD(SUBMODULE_END);
1000 RECORD(SUBMODULE_DEFINITION);
1001 RECORD(SUBMODULE_UMBRELLA_HEADER);
1002 RECORD(SUBMODULE_HEADER);
1003 RECORD(SUBMODULE_TOPHEADER);
1004 RECORD(SUBMODULE_UMBRELLA_DIR);
1005 RECORD(SUBMODULE_IMPORTS);
1006 RECORD(SUBMODULE_AFFECTING_MODULES);
1007 RECORD(SUBMODULE_EXPORTS);
1008 RECORD(SUBMODULE_REQUIRES);
1009 RECORD(SUBMODULE_EXCLUDED_HEADER);
1010 RECORD(SUBMODULE_LINK_LIBRARY);
1011 RECORD(SUBMODULE_CONFIG_MACRO);
1012 RECORD(SUBMODULE_CONFLICT);
1013 RECORD(SUBMODULE_PRIVATE_HEADER);
1014 RECORD(SUBMODULE_TEXTUAL_HEADER);
1015 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1016 RECORD(SUBMODULE_INITIALIZERS);
1017 RECORD(SUBMODULE_EXPORT_AS);
1018 RECORD(SUBMODULE_CHILD);
1019
1020 // Comments Block.
1021 BLOCK(COMMENTS_BLOCK);
1022 RECORD(COMMENTS_RAW_COMMENT);
1023
1024 // Decls and Types block.
1025 BLOCK(DECLTYPES_BLOCK);
1026 RECORD(TYPE_EXT_QUAL);
1027 RECORD(TYPE_COMPLEX);
1028 RECORD(TYPE_POINTER);
1029 RECORD(TYPE_BLOCK_POINTER);
1030 RECORD(TYPE_LVALUE_REFERENCE);
1031 RECORD(TYPE_RVALUE_REFERENCE);
1032 RECORD(TYPE_MEMBER_POINTER);
1033 RECORD(TYPE_CONSTANT_ARRAY);
1034 RECORD(TYPE_INCOMPLETE_ARRAY);
1035 RECORD(TYPE_VARIABLE_ARRAY);
1036 RECORD(TYPE_VECTOR);
1037 RECORD(TYPE_EXT_VECTOR);
1038 RECORD(TYPE_FUNCTION_NO_PROTO);
1039 RECORD(TYPE_FUNCTION_PROTO);
1040 RECORD(TYPE_TYPEDEF);
1041 RECORD(TYPE_TYPEOF_EXPR);
1042 RECORD(TYPE_TYPEOF);
1043 RECORD(TYPE_RECORD);
1044 RECORD(TYPE_ENUM);
1045 RECORD(TYPE_OBJC_INTERFACE);
1046 RECORD(TYPE_OBJC_OBJECT_POINTER);
1047 RECORD(TYPE_DECLTYPE);
1048 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1049 RECORD(TYPE_UNRESOLVED_USING);
1050 RECORD(TYPE_INJECTED_CLASS_NAME);
1051 RECORD(TYPE_OBJC_OBJECT);
1052 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1053 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1054 RECORD(TYPE_DEPENDENT_NAME);
1055 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1056 RECORD(TYPE_PAREN);
1057 RECORD(TYPE_MACRO_QUALIFIED);
1058 RECORD(TYPE_PACK_EXPANSION);
1059 RECORD(TYPE_ATTRIBUTED);
1060 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1061 RECORD(TYPE_SUBST_BUILTIN_TEMPLATE_PACK);
1062 RECORD(TYPE_AUTO);
1063 RECORD(TYPE_UNARY_TRANSFORM);
1064 RECORD(TYPE_ATOMIC);
1065 RECORD(TYPE_DECAYED);
1066 RECORD(TYPE_ADJUSTED);
1067 RECORD(TYPE_OBJC_TYPE_PARAM);
1068 RECORD(LOCAL_REDECLARATIONS);
1069 RECORD(DECL_TYPEDEF);
1070 RECORD(DECL_TYPEALIAS);
1071 RECORD(DECL_ENUM);
1072 RECORD(DECL_RECORD);
1073 RECORD(DECL_ENUM_CONSTANT);
1074 RECORD(DECL_FUNCTION);
1075 RECORD(DECL_OBJC_METHOD);
1076 RECORD(DECL_OBJC_INTERFACE);
1077 RECORD(DECL_OBJC_PROTOCOL);
1078 RECORD(DECL_OBJC_IVAR);
1079 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1080 RECORD(DECL_OBJC_CATEGORY);
1081 RECORD(DECL_OBJC_CATEGORY_IMPL);
1082 RECORD(DECL_OBJC_IMPLEMENTATION);
1083 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1084 RECORD(DECL_OBJC_PROPERTY);
1085 RECORD(DECL_OBJC_PROPERTY_IMPL);
1086 RECORD(DECL_FIELD);
1087 RECORD(DECL_MS_PROPERTY);
1088 RECORD(DECL_VAR);
1089 RECORD(DECL_IMPLICIT_PARAM);
1090 RECORD(DECL_PARM_VAR);
1091 RECORD(DECL_FILE_SCOPE_ASM);
1092 RECORD(DECL_BLOCK);
1093 RECORD(DECL_CONTEXT_LEXICAL);
1094 RECORD(DECL_CONTEXT_VISIBLE);
1095 RECORD(DECL_CONTEXT_MODULE_LOCAL_VISIBLE);
1096 RECORD(DECL_NAMESPACE);
1097 RECORD(DECL_NAMESPACE_ALIAS);
1098 RECORD(DECL_USING);
1099 RECORD(DECL_USING_SHADOW);
1100 RECORD(DECL_USING_DIRECTIVE);
1101 RECORD(DECL_UNRESOLVED_USING_VALUE);
1102 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1103 RECORD(DECL_LINKAGE_SPEC);
1104 RECORD(DECL_EXPORT);
1105 RECORD(DECL_CXX_RECORD);
1106 RECORD(DECL_CXX_METHOD);
1107 RECORD(DECL_CXX_CONSTRUCTOR);
1108 RECORD(DECL_CXX_DESTRUCTOR);
1109 RECORD(DECL_CXX_CONVERSION);
1110 RECORD(DECL_ACCESS_SPEC);
1111 RECORD(DECL_FRIEND);
1112 RECORD(DECL_FRIEND_TEMPLATE);
1113 RECORD(DECL_CLASS_TEMPLATE);
1114 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1115 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1116 RECORD(DECL_VAR_TEMPLATE);
1117 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1118 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1119 RECORD(DECL_FUNCTION_TEMPLATE);
1120 RECORD(DECL_TEMPLATE_TYPE_PARM);
1121 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1122 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1123 RECORD(DECL_CONCEPT);
1124 RECORD(DECL_REQUIRES_EXPR_BODY);
1125 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1126 RECORD(DECL_STATIC_ASSERT);
1127 RECORD(DECL_CXX_BASE_SPECIFIERS);
1128 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1129 RECORD(DECL_INDIRECTFIELD);
1130 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1131 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1132 RECORD(DECL_IMPORT);
1133 RECORD(DECL_OMP_THREADPRIVATE);
1134 RECORD(DECL_EMPTY);
1135 RECORD(DECL_OBJC_TYPE_PARAM);
1136 RECORD(DECL_OMP_CAPTUREDEXPR);
1137 RECORD(DECL_PRAGMA_COMMENT);
1138 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1139 RECORD(DECL_OMP_DECLARE_REDUCTION);
1140 RECORD(DECL_OMP_ALLOCATE);
1141 RECORD(DECL_HLSL_BUFFER);
1142 RECORD(DECL_OPENACC_DECLARE);
1143 RECORD(DECL_OPENACC_ROUTINE);
1144
1145 // Statements and Exprs can occur in the Decls and Types block.
1146 AddStmtsExprs(Stream, Record);
1147
1148 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1149 RECORD(PPD_MACRO_EXPANSION);
1150 RECORD(PPD_MACRO_DEFINITION);
1151 RECORD(PPD_INCLUSION_DIRECTIVE);
1152
1153 // Decls and Types block.
1154 BLOCK(EXTENSION_BLOCK);
1155 RECORD(EXTENSION_METADATA);
1156
1157 BLOCK(UNHASHED_CONTROL_BLOCK);
1158 RECORD(SIGNATURE);
1159 RECORD(AST_BLOCK_HASH);
1160 RECORD(DIAGNOSTIC_OPTIONS);
1161 RECORD(HEADER_SEARCH_PATHS);
1162 RECORD(DIAG_PRAGMA_MAPPINGS);
1163 RECORD(HEADER_SEARCH_ENTRY_USAGE);
1164 RECORD(VFS_USAGE);
1165
1166#undef RECORD
1167#undef BLOCK
1168 Stream.ExitBlock();
1169}
1170
1171/// Adjusts the given filename to only write out the portion of the
1172/// filename that is not part of the system root directory.
1173///
1174/// \param Filename the file name to adjust.
1175///
1176/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1177/// the returned filename will be adjusted by this root directory.
1178///
1179/// \returns either the original filename (if it needs no adjustment) or the
1180/// adjusted filename (which points into the @p Filename parameter).
1181static const char *
1182adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1183 assert(Filename && "No file name to adjust?");
1184
1185 if (BaseDir.empty())
1186 return Filename;
1187
1188 // Verify that the filename and the system root have the same prefix.
1189 unsigned Pos = 0;
1190 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1191 if (Filename[Pos] != BaseDir[Pos])
1192 return Filename; // Prefixes don't match.
1193
1194 // We hit the end of the filename before we hit the end of the system root.
1195 if (!Filename[Pos])
1196 return Filename;
1197
1198 // If there's not a path separator at the end of the base directory nor
1199 // immediately after it, then this isn't within the base directory.
1200 if (!llvm::sys::path::is_separator(value: Filename[Pos])) {
1201 if (!llvm::sys::path::is_separator(value: BaseDir.back()))
1202 return Filename;
1203 } else {
1204 // If the file name has a '/' at the current position, skip over the '/'.
1205 // We distinguish relative paths from absolute paths by the
1206 // absence of '/' at the beginning of relative paths.
1207 //
1208 // FIXME: This is wrong. We distinguish them by asking if the path is
1209 // absolute, which isn't the same thing. And there might be multiple '/'s
1210 // in a row. Use a better mechanism to indicate whether we have emitted an
1211 // absolute or relative path.
1212 ++Pos;
1213 }
1214
1215 return Filename + Pos;
1216}
1217
1218std::pair<ASTFileSignature, ASTFileSignature>
1219ASTWriter::createSignature() const {
1220 StringRef AllBytes(Buffer.data(), Buffer.size());
1221
1222 llvm::SHA1 Hasher;
1223 Hasher.update(Str: AllBytes.slice(Start: ASTBlockRange.first, End: ASTBlockRange.second));
1224 ASTFileSignature ASTBlockHash = ASTFileSignature::create(Bytes: Hasher.result());
1225
1226 // Add the remaining bytes:
1227 // 1. Before the unhashed control block.
1228 Hasher.update(Str: AllBytes.slice(Start: 0, End: UnhashedControlBlockRange.first));
1229 // 2. Between the unhashed control block and the AST block.
1230 Hasher.update(
1231 Str: AllBytes.slice(Start: UnhashedControlBlockRange.second, End: ASTBlockRange.first));
1232 // 3. After the AST block.
1233 Hasher.update(Str: AllBytes.substr(Start: ASTBlockRange.second));
1234 ASTFileSignature Signature = ASTFileSignature::create(Bytes: Hasher.result());
1235
1236 return std::make_pair(x&: ASTBlockHash, y&: Signature);
1237}
1238
1239ASTFileSignature ASTWriter::createSignatureForNamedModule() const {
1240 llvm::SHA1 Hasher;
1241 Hasher.update(Str: StringRef(Buffer.data(), Buffer.size()));
1242
1243 assert(WritingModule);
1244 assert(WritingModule->isNamedModule());
1245
1246 // We need to combine all the export imported modules no matter
1247 // we used it or not.
1248 for (auto [ExportImported, _] : WritingModule->Exports)
1249 Hasher.update(Data: ExportImported->Signature);
1250
1251 // We combine all the used modules to make sure the signature is precise.
1252 // Consider the case like:
1253 //
1254 // // a.cppm
1255 // export module a;
1256 // export inline int a() { ... }
1257 //
1258 // // b.cppm
1259 // export module b;
1260 // import a;
1261 // export inline int b() { return a(); }
1262 //
1263 // Since both `a()` and `b()` are inline, we need to make sure the BMI of
1264 // `b.pcm` will change after the implementation of `a()` changes. We can't
1265 // get that naturally since we won't record the body of `a()` during the
1266 // writing process. We can't reuse ODRHash here since ODRHash won't calculate
1267 // the called function recursively. So ODRHash will be problematic if `a()`
1268 // calls other inline functions.
1269 //
1270 // Probably we can solve this by a new hash mechanism. But the safety and
1271 // efficiency may a problem too. Here we just combine the hash value of the
1272 // used modules conservatively.
1273 for (Module *M : TouchedTopLevelModules)
1274 Hasher.update(Data: M->Signature);
1275
1276 return ASTFileSignature::create(Bytes: Hasher.result());
1277}
1278
1279static void BackpatchSignatureAt(llvm::BitstreamWriter &Stream,
1280 const ASTFileSignature &S, uint64_t BitNo) {
1281 for (uint8_t Byte : S) {
1282 Stream.BackpatchByte(BitNo, NewByte: Byte);
1283 BitNo += 8;
1284 }
1285}
1286
1287ASTFileSignature ASTWriter::backpatchSignature() {
1288 if (isWritingStdCXXNamedModules()) {
1289 ASTFileSignature Signature = createSignatureForNamedModule();
1290 BackpatchSignatureAt(Stream, S: Signature, BitNo: SignatureOffset);
1291 return Signature;
1292 }
1293
1294 if (!WritingModule ||
1295 !PP->getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent)
1296 return {};
1297
1298 // For implicit modules, write the hash of the PCM as its signature.
1299 ASTFileSignature ASTBlockHash;
1300 ASTFileSignature Signature;
1301 std::tie(args&: ASTBlockHash, args&: Signature) = createSignature();
1302
1303 BackpatchSignatureAt(Stream, S: ASTBlockHash, BitNo: ASTBlockHashOffset);
1304 BackpatchSignatureAt(Stream, S: Signature, BitNo: SignatureOffset);
1305
1306 return Signature;
1307}
1308
1309void ASTWriter::writeUnhashedControlBlock(Preprocessor &PP) {
1310 using namespace llvm;
1311
1312 // Flush first to prepare the PCM hash (signature).
1313 Stream.FlushToWord();
1314 UnhashedControlBlockRange.first = Stream.GetCurrentBitNo() >> 3;
1315
1316 // Enter the block and prepare to write records.
1317 RecordData Record;
1318 Stream.EnterSubblock(BlockID: UNHASHED_CONTROL_BLOCK_ID, CodeLen: 5);
1319
1320 // For implicit modules and C++20 named modules, write the hash of the PCM as
1321 // its signature.
1322 if (isWritingStdCXXNamedModules() ||
1323 (WritingModule &&
1324 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent)) {
1325 // At this point, we don't know the actual signature of the file or the AST
1326 // block - we're only able to compute those at the end of the serialization
1327 // process. Let's store dummy signatures for now, and replace them with the
1328 // real ones later on.
1329 // The bitstream VBR-encodes record elements, which makes backpatching them
1330 // really difficult. Let's store the signatures as blobs instead - they are
1331 // guaranteed to be word-aligned, and we control their format/encoding.
1332 auto Dummy = ASTFileSignature::createDummy();
1333 SmallString<128> Blob{Dummy.begin(), Dummy.end()};
1334
1335 // We don't need AST Block hash in named modules.
1336 if (!isWritingStdCXXNamedModules()) {
1337 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1338 Abbrev->Add(OpInfo: BitCodeAbbrevOp(AST_BLOCK_HASH));
1339 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1340 unsigned ASTBlockHashAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1341
1342 Record.push_back(Elt: AST_BLOCK_HASH);
1343 Stream.EmitRecordWithBlob(Abbrev: ASTBlockHashAbbrev, Vals: Record, Blob);
1344 ASTBlockHashOffset = Stream.GetCurrentBitNo() - Blob.size() * 8;
1345 Record.clear();
1346 }
1347
1348 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1349 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SIGNATURE));
1350 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1351 unsigned SignatureAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1352
1353 Record.push_back(Elt: SIGNATURE);
1354 Stream.EmitRecordWithBlob(Abbrev: SignatureAbbrev, Vals: Record, Blob);
1355 SignatureOffset = Stream.GetCurrentBitNo() - Blob.size() * 8;
1356 Record.clear();
1357 }
1358
1359 const auto &HSOpts = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1360
1361 // Diagnostic options.
1362 const auto &Diags = PP.getDiagnostics();
1363 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1364 if (!HSOpts.ModulesSkipDiagnosticOptions) {
1365#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1366#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1367 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1368#include "clang/Basic/DiagnosticOptions.def"
1369 Record.push_back(Elt: DiagOpts.Warnings.size());
1370 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1371 AddString(Str: DiagOpts.Warnings[I], Record);
1372 Record.push_back(Elt: DiagOpts.Remarks.size());
1373 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1374 AddString(Str: DiagOpts.Remarks[I], Record);
1375 // Note: we don't serialize the log or serialization file names, because
1376 // they are generally transient files and will almost always be overridden.
1377 Stream.EmitRecord(Code: DIAGNOSTIC_OPTIONS, Vals: Record);
1378 Record.clear();
1379 }
1380
1381 // Header search paths.
1382 if (!HSOpts.ModulesSkipHeaderSearchPaths) {
1383 // Include entries.
1384 Record.push_back(Elt: HSOpts.UserEntries.size());
1385 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1386 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1387 AddString(Str: Entry.Path, Record);
1388 Record.push_back(Elt: static_cast<unsigned>(Entry.Group));
1389 Record.push_back(Elt: Entry.IsFramework);
1390 Record.push_back(Elt: Entry.IgnoreSysRoot);
1391 }
1392
1393 // System header prefixes.
1394 Record.push_back(Elt: HSOpts.SystemHeaderPrefixes.size());
1395 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1396 AddString(Str: HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1397 Record.push_back(Elt: HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1398 }
1399
1400 // VFS overlay files.
1401 Record.push_back(Elt: HSOpts.VFSOverlayFiles.size());
1402 for (StringRef VFSOverlayFile : HSOpts.VFSOverlayFiles)
1403 AddString(Str: VFSOverlayFile, Record);
1404
1405 Stream.EmitRecord(Code: HEADER_SEARCH_PATHS, Vals: Record);
1406 }
1407
1408 if (!HSOpts.ModulesSkipPragmaDiagnosticMappings)
1409 WritePragmaDiagnosticMappings(Diag: Diags, /* isModule = */ WritingModule);
1410
1411 // Header search entry usage.
1412 {
1413 auto HSEntryUsage = PP.getHeaderSearchInfo().computeUserEntryUsage();
1414 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1415 Abbrev->Add(OpInfo: BitCodeAbbrevOp(HEADER_SEARCH_ENTRY_USAGE));
1416 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // Number of bits.
1417 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Bit vector.
1418 unsigned HSUsageAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1419 RecordData::value_type Record[] = {HEADER_SEARCH_ENTRY_USAGE,
1420 HSEntryUsage.size()};
1421 Stream.EmitRecordWithBlob(Abbrev: HSUsageAbbrevCode, Vals: Record, Blob: bytes(V: HSEntryUsage));
1422 }
1423
1424 // VFS usage.
1425 {
1426 auto VFSUsage = PP.getHeaderSearchInfo().collectVFSUsageAndClear();
1427 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1428 Abbrev->Add(OpInfo: BitCodeAbbrevOp(VFS_USAGE));
1429 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // Number of bits.
1430 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Bit vector.
1431 unsigned VFSUsageAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1432 RecordData::value_type Record[] = {VFS_USAGE, VFSUsage.size()};
1433 Stream.EmitRecordWithBlob(Abbrev: VFSUsageAbbrevCode, Vals: Record, Blob: bytes(V: VFSUsage));
1434 }
1435
1436 // Leave the options block.
1437 Stream.ExitBlock();
1438 UnhashedControlBlockRange.second = Stream.GetCurrentBitNo() >> 3;
1439}
1440
1441/// Write the control block.
1442void ASTWriter::WriteControlBlock(Preprocessor &PP, StringRef isysroot) {
1443 using namespace llvm;
1444
1445 SourceManager &SourceMgr = PP.getSourceManager();
1446 FileManager &FileMgr = PP.getFileManager();
1447
1448 Stream.EnterSubblock(BlockID: CONTROL_BLOCK_ID, CodeLen: 5);
1449 RecordData Record;
1450
1451 // Metadata
1452 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1453 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(METADATA));
1454 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1455 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1456 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1457 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1458 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1459 // Standard C++ module
1460 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
1461 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1462 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1463 MetadataAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1464 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(MetadataAbbrev));
1465 assert((!WritingModule || isysroot.empty()) &&
1466 "writing module as a relocatable PCH?");
1467 {
1468 RecordData::value_type Record[] = {METADATA,
1469 VERSION_MAJOR,
1470 VERSION_MINOR,
1471 CLANG_VERSION_MAJOR,
1472 CLANG_VERSION_MINOR,
1473 !isysroot.empty(),
1474 isWritingStdCXXNamedModules(),
1475 IncludeTimestamps,
1476 ASTHasCompilerErrors};
1477 Stream.EmitRecordWithBlob(Abbrev: MetadataAbbrevCode, Vals: Record,
1478 Blob: getClangFullRepositoryVersion());
1479 }
1480
1481 if (WritingModule) {
1482 // Module name
1483 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1484 Abbrev->Add(OpInfo: BitCodeAbbrevOp(MODULE_NAME));
1485 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1486 unsigned AbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1487 RecordData::value_type Record[] = {MODULE_NAME};
1488 Stream.EmitRecordWithBlob(Abbrev: AbbrevCode, Vals: Record, Blob: WritingModule->Name);
1489
1490 auto BaseDir = [&]() -> std::optional<SmallString<128>> {
1491 if (PP.getHeaderSearchInfo().getHeaderSearchOpts().ModuleFileHomeIsCwd) {
1492 // Use the current working directory as the base path for all inputs.
1493 auto CWD = FileMgr.getOptionalDirectoryRef(DirName: ".");
1494 return CWD->getName();
1495 }
1496 if (WritingModule->Directory) {
1497 return WritingModule->Directory->getName();
1498 }
1499 return std::nullopt;
1500 }();
1501 if (BaseDir) {
1502 FileMgr.makeAbsolutePath(Path&: *BaseDir, /*Canonicalize=*/true);
1503
1504 // If the home of the module is the current working directory, then we
1505 // want to pick up the cwd of the build process loading the module, not
1506 // our cwd, when we load this module.
1507 if (!PP.getHeaderSearchInfo().getHeaderSearchOpts().ModuleFileHomeIsCwd &&
1508 (!PP.getHeaderSearchInfo()
1509 .getHeaderSearchOpts()
1510 .ModuleMapFileHomeIsCwd ||
1511 WritingModule->Directory->getName() != ".")) {
1512 // Module directory.
1513 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1514 Abbrev->Add(OpInfo: BitCodeAbbrevOp(MODULE_DIRECTORY));
1515 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1516 unsigned AbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1517
1518 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1519 Stream.EmitRecordWithBlob(Abbrev: AbbrevCode, Vals: Record, Blob: *BaseDir);
1520 }
1521
1522 // Write out all other paths relative to the base directory if possible.
1523 BaseDirectory.assign(first: BaseDir->begin(), last: BaseDir->end());
1524 }
1525 } else if (!isysroot.empty()) {
1526 // Write out paths relative to the sysroot if possible.
1527 SmallString<128> CleanedSysroot(isysroot);
1528 PP.getFileManager().makeAbsolutePath(Path&: CleanedSysroot, /*Canonicalize=*/true);
1529 BaseDirectory.assign(first: CleanedSysroot.begin(), last: CleanedSysroot.end());
1530 }
1531
1532 // Module map file
1533 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1534 Record.clear();
1535
1536 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1537 AddPath(Path: WritingModule->PresumedModuleMapFile.empty()
1538 ? Map.getModuleMapFileForUniquing(M: WritingModule)
1539 ->getNameAsRequested()
1540 : StringRef(WritingModule->PresumedModuleMapFile),
1541 Record);
1542
1543 // Additional module map files.
1544 if (auto *AdditionalModMaps =
1545 Map.getAdditionalModuleMapFiles(M: WritingModule)) {
1546 Record.push_back(Elt: AdditionalModMaps->size());
1547 SmallVector<FileEntryRef, 1> ModMaps(AdditionalModMaps->begin(),
1548 AdditionalModMaps->end());
1549 llvm::sort(C&: ModMaps, Comp: [](FileEntryRef A, FileEntryRef B) {
1550 return A.getName() < B.getName();
1551 });
1552 for (FileEntryRef F : ModMaps)
1553 AddPath(Path: F.getName(), Record);
1554 } else {
1555 Record.push_back(Elt: 0);
1556 }
1557
1558 Stream.EmitRecord(Code: MODULE_MAP_FILE, Vals: Record);
1559 }
1560
1561 // Imports
1562 if (Chain) {
1563 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1564 Abbrev->Add(OpInfo: BitCodeAbbrevOp(IMPORT));
1565 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Kind
1566 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ImportLoc
1567 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Module name len
1568 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Standard C++ mod
1569 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File size
1570 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File timestamp
1571 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File name raw kind
1572 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File name len
1573 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Strings
1574 unsigned AbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
1575
1576 SmallString<128> Blob;
1577
1578 for (ModuleFile &M : Chain->getModuleManager()) {
1579 // Skip modules that weren't directly imported.
1580 if (!M.isDirectlyImported())
1581 continue;
1582
1583 Record.clear();
1584 Blob.clear();
1585
1586 Record.push_back(Elt: IMPORT);
1587 Record.push_back(Elt: (unsigned)M.Kind); // FIXME: Stable encoding
1588 AddSourceLocation(Loc: M.ImportLoc, Record);
1589 AddStringBlob(Str: M.ModuleName, Record, Blob);
1590 Record.push_back(Elt: M.StandardCXXModule);
1591
1592 // We don't want to hard code the information about imported modules
1593 // in the C++20 named modules.
1594 if (M.StandardCXXModule) {
1595 Record.push_back(Elt: 0);
1596 Record.push_back(Elt: 0);
1597 Record.push_back(Elt: 0);
1598 Record.push_back(Elt: 0);
1599 } else {
1600 // If we have calculated signature, there is no need to store
1601 // the size or timestamp.
1602 Record.push_back(Elt: M.Signature ? 0 : M.Size);
1603 Record.push_back(Elt: M.Signature ? 0 : getTimestampForOutput(ModTime: M.ModTime));
1604
1605 Record.push_back(Elt: M.FileName.getRawKind());
1606
1607 llvm::append_range(C&: Blob, R&: M.Signature);
1608
1609 AddPathBlob(Str: M.FileName, Record, Blob);
1610 }
1611
1612 Stream.EmitRecordWithBlob(Abbrev: AbbrevCode, Vals: Record, Blob);
1613 }
1614 }
1615
1616 // Write the options block.
1617 Stream.EnterSubblock(BlockID: OPTIONS_BLOCK_ID, CodeLen: 4);
1618
1619 // Language options.
1620 Record.clear();
1621 const LangOptions &LangOpts = PP.getLangOpts();
1622 Record.push_back(Elt: static_cast<unsigned>(LangOpts.LangStd));
1623 const uint64_t LanguageOptionValues[] = {
1624#define LANGOPT(Name, Bits, Default, Compatibility, Description) LangOpts.Name,
1625#define ENUM_LANGOPT(Name, Type, Bits, Default, Compatibility, Description) \
1626 static_cast<unsigned>(LangOpts.get##Name()),
1627#include "clang/Basic/LangOptions.def"
1628#define SANITIZER(NAME, ID) LangOpts.Sanitize.has(SanitizerKind::ID),
1629#include "clang/Basic/Sanitizers.def"
1630 };
1631 llvm::append_range(C&: Record, R: LanguageOptionValues);
1632
1633 Record.push_back(Elt: LangOpts.ModuleFeatures.size());
1634 for (StringRef Feature : LangOpts.ModuleFeatures)
1635 AddString(Str: Feature, Record);
1636
1637 Record.push_back(Elt: (unsigned) LangOpts.ObjCRuntime.getKind());
1638 AddVersionTuple(Version: LangOpts.ObjCRuntime.getVersion(), Record);
1639
1640 AddString(Str: LangOpts.CurrentModule, Record);
1641
1642 // Comment options.
1643 Record.push_back(Elt: LangOpts.CommentOpts.BlockCommandNames.size());
1644 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1645 AddString(Str: I, Record);
1646 }
1647 Record.push_back(Elt: LangOpts.CommentOpts.ParseAllComments);
1648
1649 // OpenMP offloading options.
1650 Record.push_back(Elt: LangOpts.OMPTargetTriples.size());
1651 for (auto &T : LangOpts.OMPTargetTriples)
1652 AddString(Str: T.getTriple(), Record);
1653
1654 AddString(Str: LangOpts.OMPHostIRFile, Record);
1655
1656 Stream.EmitRecord(Code: LANGUAGE_OPTIONS, Vals: Record);
1657
1658 // Codegen options.
1659 // FIXME: Replace with C++20 `using enum CodeGenOptions::CompatibilityKind`.
1660 using CK = CodeGenOptions::CompatibilityKind;
1661 Record.clear();
1662 const CodeGenOptions &CGOpts = getCodeGenOpts();
1663#define CODEGENOPT(Name, Bits, Default, Compatibility) \
1664 if constexpr (CK::Compatibility != CK::Benign) \
1665 Record.push_back(static_cast<unsigned>(CGOpts.Name));
1666#define ENUM_CODEGENOPT(Name, Type, Bits, Default, Compatibility) \
1667 if constexpr (CK::Compatibility != CK::Benign) \
1668 Record.push_back(static_cast<unsigned>(CGOpts.get##Name()));
1669#define DEBUGOPT(Name, Bits, Default, Compatibility)
1670#define VALUE_DEBUGOPT(Name, Bits, Default, Compatibility)
1671#define ENUM_DEBUGOPT(Name, Type, Bits, Default, Compatibility)
1672#include "clang/Basic/CodeGenOptions.def"
1673 Stream.EmitRecord(Code: CODEGEN_OPTIONS, Vals: Record);
1674
1675 // Target options.
1676 Record.clear();
1677 const TargetInfo &Target = PP.getTargetInfo();
1678 const TargetOptions &TargetOpts = Target.getTargetOpts();
1679 AddString(Str: TargetOpts.Triple, Record);
1680 AddString(Str: TargetOpts.CPU, Record);
1681 AddString(Str: TargetOpts.TuneCPU, Record);
1682 AddString(Str: TargetOpts.ABI, Record);
1683 Record.push_back(Elt: TargetOpts.FeaturesAsWritten.size());
1684 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1685 AddString(Str: TargetOpts.FeaturesAsWritten[I], Record);
1686 }
1687 Record.push_back(Elt: TargetOpts.Features.size());
1688 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1689 AddString(Str: TargetOpts.Features[I], Record);
1690 }
1691 Stream.EmitRecord(Code: TARGET_OPTIONS, Vals: Record);
1692
1693 // File system options.
1694 Record.clear();
1695 const FileSystemOptions &FSOpts = FileMgr.getFileSystemOpts();
1696 AddString(Str: FSOpts.WorkingDir, Record);
1697 Stream.EmitRecord(Code: FILE_SYSTEM_OPTIONS, Vals: Record);
1698
1699 // Header search options.
1700 Record.clear();
1701 const HeaderSearchOptions &HSOpts =
1702 PP.getHeaderSearchInfo().getHeaderSearchOpts();
1703
1704 StringRef HSOpts_ModuleCachePath =
1705 PP.getHeaderSearchInfo().getNormalizedModuleCachePath();
1706
1707 AddString(Str: HSOpts.Sysroot, Record);
1708 AddString(Str: HSOpts.ResourceDir, Record);
1709 AddString(Str: HSOpts_ModuleCachePath, Record);
1710 AddString(Str: HSOpts.ModuleUserBuildPath, Record);
1711 Record.push_back(Elt: HSOpts.DisableModuleHash);
1712 Record.push_back(Elt: HSOpts.ImplicitModuleMaps);
1713 Record.push_back(Elt: HSOpts.ModuleMapFileHomeIsCwd);
1714 Record.push_back(Elt: HSOpts.EnablePrebuiltImplicitModules);
1715 Record.push_back(Elt: HSOpts.UseBuiltinIncludes);
1716 Record.push_back(Elt: HSOpts.UseStandardSystemIncludes);
1717 Record.push_back(Elt: HSOpts.UseStandardCXXIncludes);
1718 Record.push_back(Elt: HSOpts.UseLibcxx);
1719 AddString(Str: PP.getHeaderSearchInfo().getContextHash(), Record);
1720 Stream.EmitRecord(Code: HEADER_SEARCH_OPTIONS, Vals: Record);
1721
1722 // Preprocessor options.
1723 Record.clear();
1724 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1725
1726 // If we're building an implicit module with a context hash, the importer is
1727 // guaranteed to have the same macros defined on the command line. Skip
1728 // writing them.
1729 bool SkipMacros = BuildingImplicitModule && !HSOpts.DisableModuleHash;
1730 bool WriteMacros = !SkipMacros;
1731 Record.push_back(Elt: WriteMacros);
1732 if (WriteMacros) {
1733 // Macro definitions.
1734 Record.push_back(Elt: PPOpts.Macros.size());
1735 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1736 AddString(Str: PPOpts.Macros[I].first, Record);
1737 Record.push_back(Elt: PPOpts.Macros[I].second);
1738 }
1739 }
1740
1741 // Includes
1742 Record.push_back(Elt: PPOpts.Includes.size());
1743 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1744 AddString(Str: PPOpts.Includes[I], Record);
1745
1746 // Macro includes
1747 Record.push_back(Elt: PPOpts.MacroIncludes.size());
1748 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1749 AddString(Str: PPOpts.MacroIncludes[I], Record);
1750
1751 Record.push_back(Elt: PPOpts.UsePredefines);
1752 // Detailed record is important since it is used for the module cache hash.
1753 Record.push_back(Elt: PPOpts.DetailedRecord);
1754
1755 // FIXME: Using `AddString` to record `ImplicitPCHInclude` does not handle
1756 // relocatable files. We probably should call
1757 // `AddPath(PPOpts.ImplicitPCHInclude, Record)` to properly support chained
1758 // relocatable PCHs.
1759 AddString(Str: PPOpts.ImplicitPCHInclude, Record);
1760 Record.push_back(Elt: static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1761 Stream.EmitRecord(Code: PREPROCESSOR_OPTIONS, Vals: Record);
1762
1763 // Leave the options block.
1764 Stream.ExitBlock();
1765
1766 // Original file name and file ID
1767 if (auto MainFile =
1768 SourceMgr.getFileEntryRefForID(FID: SourceMgr.getMainFileID())) {
1769 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1770 FileAbbrev->Add(OpInfo: BitCodeAbbrevOp(ORIGINAL_FILE));
1771 FileAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1772 FileAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1773 unsigned FileAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(FileAbbrev));
1774
1775 Record.clear();
1776 Record.push_back(Elt: ORIGINAL_FILE);
1777 AddFileID(FID: SourceMgr.getMainFileID(), Record);
1778 EmitRecordWithPath(Abbrev: FileAbbrevCode, Record, Path: MainFile->getName());
1779 }
1780
1781 Record.clear();
1782 AddFileID(FID: SourceMgr.getMainFileID(), Record);
1783 Stream.EmitRecord(Code: ORIGINAL_FILE_ID, Vals: Record);
1784
1785 WriteInputFiles(SourceMgr);
1786 Stream.ExitBlock();
1787}
1788
1789namespace {
1790
1791/// An input file.
1792struct InputFileEntry {
1793 FileEntryRef File;
1794 bool IsSystemFile;
1795 bool IsTransient;
1796 bool BufferOverridden;
1797 bool IsTopLevel;
1798 bool IsModuleMap;
1799 uint32_t ContentHash[2];
1800
1801 InputFileEntry(FileEntryRef File) : File(File) {}
1802
1803 void trySetContentHash(
1804 Preprocessor &PP,
1805 llvm::function_ref<std::optional<llvm::MemoryBufferRef>()> GetMemBuff) {
1806 ContentHash[0] = 0;
1807 ContentHash[1] = 0;
1808
1809 if (!PP.getHeaderSearchInfo()
1810 .getHeaderSearchOpts()
1811 .ValidateASTInputFilesContent)
1812 return;
1813
1814 auto MemBuff = GetMemBuff();
1815 if (!MemBuff) {
1816 PP.Diag(Loc: SourceLocation(), DiagID: diag::err_module_unable_to_hash_content)
1817 << File.getName();
1818 return;
1819 }
1820
1821 uint64_t Hash = xxh3_64bits(data: MemBuff->getBuffer());
1822 ContentHash[0] = uint32_t(Hash);
1823 ContentHash[1] = uint32_t(Hash >> 32);
1824 }
1825};
1826
1827} // namespace
1828
1829SourceLocation ASTWriter::getAffectingIncludeLoc(const SourceManager &SourceMgr,
1830 const SrcMgr::FileInfo &File) {
1831 SourceLocation IncludeLoc = File.getIncludeLoc();
1832 if (IncludeLoc.isValid()) {
1833 FileID IncludeFID = SourceMgr.getFileID(SpellingLoc: IncludeLoc);
1834 assert(IncludeFID.isValid() && "IncludeLoc in invalid file");
1835 if (!IsSLocAffecting[IncludeFID.ID])
1836 IncludeLoc = SourceLocation();
1837 }
1838 return IncludeLoc;
1839}
1840
1841void ASTWriter::WriteInputFiles(SourceManager &SourceMgr) {
1842 using namespace llvm;
1843
1844 Stream.EnterSubblock(BlockID: INPUT_FILES_BLOCK_ID, CodeLen: 4);
1845
1846 // Create input-file abbreviation.
1847 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1848 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(INPUT_FILE));
1849 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1850 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1851 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1852 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1853 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1854 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Top-level
1855 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1856 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // Name as req. len
1857 IFAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name as req. + name
1858 unsigned IFAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(IFAbbrev));
1859
1860 // Create input file hash abbreviation.
1861 auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
1862 IFHAbbrev->Add(OpInfo: BitCodeAbbrevOp(INPUT_FILE_HASH));
1863 IFHAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1864 IFHAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1865 unsigned IFHAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(IFHAbbrev));
1866
1867 uint64_t InputFilesOffsetBase = Stream.GetCurrentBitNo();
1868
1869 // Get all ContentCache objects for files.
1870 std::vector<InputFileEntry> UserFiles;
1871 std::vector<InputFileEntry> SystemFiles;
1872 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1873 // Get this source location entry.
1874 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(Index: I);
1875 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc);
1876
1877 // We only care about file entries that were not overridden.
1878 if (!SLoc->isFile())
1879 continue;
1880 const SrcMgr::FileInfo &File = SLoc->getFile();
1881 const SrcMgr::ContentCache *Cache = &File.getContentCache();
1882 if (!Cache->OrigEntry)
1883 continue;
1884
1885 // Do not emit input files that do not affect current module.
1886 if (!IsSLocFileEntryAffecting[I])
1887 continue;
1888
1889 InputFileEntry Entry(*Cache->OrigEntry);
1890 Entry.IsSystemFile = isSystem(CK: File.getFileCharacteristic());
1891 Entry.IsTransient = Cache->IsTransient;
1892 Entry.BufferOverridden = Cache->BufferOverridden;
1893
1894 FileID IncludeFileID = SourceMgr.getFileID(SpellingLoc: File.getIncludeLoc());
1895 Entry.IsTopLevel = IncludeFileID.isInvalid() || IncludeFileID.ID < 0 ||
1896 !IsSLocFileEntryAffecting[IncludeFileID.ID];
1897 Entry.IsModuleMap = isModuleMap(CK: File.getFileCharacteristic());
1898
1899 Entry.trySetContentHash(PP&: *PP, GetMemBuff: [&] { return Cache->getBufferIfLoaded(); });
1900
1901 if (Entry.IsSystemFile)
1902 SystemFiles.push_back(x: Entry);
1903 else
1904 UserFiles.push_back(x: Entry);
1905 }
1906
1907 // FIXME: Make providing input files not in the SourceManager more flexible.
1908 // The SDKSettings.json file is necessary for correct evaluation of
1909 // availability annotations.
1910 StringRef Sysroot = PP->getHeaderSearchInfo().getHeaderSearchOpts().Sysroot;
1911 if (!Sysroot.empty()) {
1912 SmallString<128> SDKSettingsJSON = Sysroot;
1913 llvm::sys::path::append(path&: SDKSettingsJSON, a: "SDKSettings.json");
1914 FileManager &FM = PP->getFileManager();
1915 if (auto FE = FM.getOptionalFileRef(Filename: SDKSettingsJSON)) {
1916 InputFileEntry Entry(*FE);
1917 Entry.IsSystemFile = true;
1918 Entry.IsTransient = false;
1919 Entry.BufferOverridden = false;
1920 Entry.IsTopLevel = true;
1921 Entry.IsModuleMap = false;
1922 std::unique_ptr<MemoryBuffer> MB;
1923 Entry.trySetContentHash(PP&: *PP, GetMemBuff: [&]() -> std::optional<MemoryBufferRef> {
1924 if (auto MBOrErr = FM.getBufferForFile(Entry: Entry.File)) {
1925 MB = std::move(*MBOrErr);
1926 return MB->getMemBufferRef();
1927 }
1928 return std::nullopt;
1929 });
1930 SystemFiles.push_back(x: Entry);
1931 }
1932 }
1933
1934 // User files go at the front, system files at the back.
1935 auto SortedFiles = llvm::concat<InputFileEntry>(Ranges: std::move(UserFiles),
1936 Ranges: std::move(SystemFiles));
1937
1938 unsigned UserFilesNum = 0;
1939 // Write out all of the input files.
1940 std::vector<uint64_t> InputFileOffsets;
1941 for (const auto &Entry : SortedFiles) {
1942 uint32_t &InputFileID = InputFileIDs[Entry.File];
1943 if (InputFileID != 0)
1944 continue; // already recorded this file.
1945
1946 // Record this entry's offset.
1947 InputFileOffsets.push_back(x: Stream.GetCurrentBitNo() - InputFilesOffsetBase);
1948
1949 InputFileID = InputFileOffsets.size();
1950
1951 if (!Entry.IsSystemFile)
1952 ++UserFilesNum;
1953
1954 // Emit size/modification time for this file.
1955 // And whether this file was overridden.
1956 {
1957 SmallString<128> NameAsRequested = Entry.File.getNameAsRequested();
1958 SmallString<128> Name = Entry.File.getName();
1959
1960 PreparePathForOutput(Path&: NameAsRequested);
1961 PreparePathForOutput(Path&: Name);
1962
1963 if (Name == NameAsRequested)
1964 Name.clear();
1965
1966 RecordData::value_type Record[] = {
1967 INPUT_FILE,
1968 InputFileOffsets.size(),
1969 (uint64_t)Entry.File.getSize(),
1970 (uint64_t)getTimestampForOutput(ModTime: Entry.File.getModificationTime()),
1971 Entry.BufferOverridden,
1972 Entry.IsTransient,
1973 Entry.IsTopLevel,
1974 Entry.IsModuleMap,
1975 NameAsRequested.size()};
1976
1977 Stream.EmitRecordWithBlob(Abbrev: IFAbbrevCode, Vals: Record,
1978 Blob: (NameAsRequested + Name).str());
1979 }
1980
1981 // Emit content hash for this file.
1982 {
1983 RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
1984 Entry.ContentHash[1]};
1985 Stream.EmitRecordWithAbbrev(Abbrev: IFHAbbrevCode, Vals: Record);
1986 }
1987 }
1988
1989 Stream.ExitBlock();
1990
1991 // Create input file offsets abbreviation.
1992 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1993 OffsetsAbbrev->Add(OpInfo: BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1994 OffsetsAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1995 OffsetsAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1996 // input files
1997 OffsetsAbbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1998 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(Abbv: std::move(OffsetsAbbrev));
1999
2000 // Write input file offsets.
2001 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
2002 InputFileOffsets.size(), UserFilesNum};
2003 Stream.EmitRecordWithBlob(Abbrev: OffsetsAbbrevCode, Vals: Record, Blob: bytes(v: InputFileOffsets));
2004}
2005
2006//===----------------------------------------------------------------------===//
2007// Source Manager Serialization
2008//===----------------------------------------------------------------------===//
2009
2010/// Create an abbreviation for the SLocEntry that refers to a
2011/// file.
2012static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
2013 using namespace llvm;
2014
2015 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2016 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
2017 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
2018 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
2019 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
2020 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
2021 // FileEntry fields.
2022 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
2023 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
2024 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
2025 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
2026 return Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2027}
2028
2029/// Create an abbreviation for the SLocEntry that refers to a
2030/// buffer.
2031static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
2032 using namespace llvm;
2033
2034 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2035 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
2036 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
2037 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
2038 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
2039 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
2040 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
2041 return Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2042}
2043
2044/// Create an abbreviation for the SLocEntry that refers to a
2045/// buffer's blob.
2046static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
2047 bool Compressed) {
2048 using namespace llvm;
2049
2050 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2051 Abbrev->Add(OpInfo: BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
2052 : SM_SLOC_BUFFER_BLOB));
2053 if (Compressed)
2054 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
2055 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
2056 return Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2057}
2058
2059/// Create an abbreviation for the SLocEntry that refers to a macro
2060/// expansion.
2061static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
2062 using namespace llvm;
2063
2064 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2065 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
2066 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
2067 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
2068 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Start location
2069 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // End location
2070 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
2071 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
2072 return Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2073}
2074
2075/// Emit key length and data length as ULEB-encoded data, and return them as a
2076/// pair.
2077static std::pair<unsigned, unsigned>
2078emitULEBKeyDataLength(unsigned KeyLen, unsigned DataLen, raw_ostream &Out) {
2079 llvm::encodeULEB128(Value: KeyLen, OS&: Out);
2080 llvm::encodeULEB128(Value: DataLen, OS&: Out);
2081 return std::make_pair(x&: KeyLen, y&: DataLen);
2082}
2083
2084namespace {
2085
2086 // Trait used for the on-disk hash table of header search information.
2087 class HeaderFileInfoTrait {
2088 ASTWriter &Writer;
2089
2090 public:
2091 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
2092
2093 struct key_type {
2094 StringRef Filename;
2095 off_t Size;
2096 time_t ModTime;
2097 };
2098 using key_type_ref = const key_type &;
2099
2100 using UnresolvedModule =
2101 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
2102
2103 struct data_type {
2104 data_type(const HeaderFileInfo &HFI, bool AlreadyIncluded,
2105 ArrayRef<ModuleMap::KnownHeader> KnownHeaders,
2106 UnresolvedModule Unresolved)
2107 : HFI(HFI), AlreadyIncluded(AlreadyIncluded),
2108 KnownHeaders(KnownHeaders), Unresolved(Unresolved) {}
2109
2110 HeaderFileInfo HFI;
2111 bool AlreadyIncluded;
2112 SmallVector<ModuleMap::KnownHeader, 1> KnownHeaders;
2113 UnresolvedModule Unresolved;
2114 };
2115 using data_type_ref = const data_type &;
2116
2117 using hash_value_type = unsigned;
2118 using offset_type = unsigned;
2119
2120 hash_value_type ComputeHash(key_type_ref key) {
2121 // The hash is based only on size/time of the file, so that the reader can
2122 // match even when symlinking or excess path elements ("foo/../", "../")
2123 // change the form of the name. However, complete path is still the key.
2124 uint8_t buf[sizeof(key.Size) + sizeof(key.ModTime)];
2125 memcpy(dest: buf, src: &key.Size, n: sizeof(key.Size));
2126 memcpy(dest: buf + sizeof(key.Size), src: &key.ModTime, n: sizeof(key.ModTime));
2127 return llvm::xxh3_64bits(data: buf);
2128 }
2129
2130 std::pair<unsigned, unsigned>
2131 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
2132 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
2133 unsigned DataLen = 1 + sizeof(IdentifierID);
2134 for (auto ModInfo : Data.KnownHeaders)
2135 if (Writer.getLocalOrImportedSubmoduleID(Mod: ModInfo.getModule()))
2136 DataLen += 4;
2137 if (Data.Unresolved.getPointer())
2138 DataLen += 4;
2139 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
2140 }
2141
2142 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
2143 using namespace llvm::support;
2144
2145 endian::Writer LE(Out, llvm::endianness::little);
2146 LE.write<uint64_t>(Val: key.Size);
2147 KeyLen -= 8;
2148 LE.write<uint64_t>(Val: key.ModTime);
2149 KeyLen -= 8;
2150 Out.write(Ptr: key.Filename.data(), Size: KeyLen);
2151 }
2152
2153 void EmitData(raw_ostream &Out, key_type_ref key,
2154 data_type_ref Data, unsigned DataLen) {
2155 using namespace llvm::support;
2156
2157 endian::Writer LE(Out, llvm::endianness::little);
2158 uint64_t Start = Out.tell(); (void)Start;
2159
2160 unsigned char Flags = (Data.AlreadyIncluded << 6)
2161 | (Data.HFI.isImport << 5)
2162 | (Writer.isWritingStdCXXNamedModules() ? 0 :
2163 Data.HFI.isPragmaOnce << 4)
2164 | (Data.HFI.DirInfo << 1);
2165 LE.write<uint8_t>(Val: Flags);
2166
2167 if (Data.HFI.LazyControllingMacro.isID())
2168 LE.write<IdentifierID>(Val: Data.HFI.LazyControllingMacro.getID());
2169 else
2170 LE.write<IdentifierID>(
2171 Val: Writer.getIdentifierRef(II: Data.HFI.LazyControllingMacro.getPtr()));
2172
2173 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2174 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(Mod: M)) {
2175 uint32_t Value = (ModID << 3) | (unsigned)Role;
2176 assert((Value >> 3) == ModID && "overflow in header module info");
2177 LE.write<uint32_t>(Val: Value);
2178 }
2179 };
2180
2181 for (auto ModInfo : Data.KnownHeaders)
2182 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2183 if (Data.Unresolved.getPointer())
2184 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2185
2186 assert(Out.tell() - Start == DataLen && "Wrong data length");
2187 }
2188 };
2189
2190} // namespace
2191
2192/// Write the header search block for the list of files that
2193///
2194/// \param HS The header search structure to save.
2195void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2196 HeaderFileInfoTrait GeneratorTrait(*this);
2197 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2198 SmallVector<const char *, 4> SavedStrings;
2199 unsigned NumHeaderSearchEntries = 0;
2200
2201 // Find all unresolved headers for the current module. We generally will
2202 // have resolved them before we get here, but not necessarily: we might be
2203 // compiling a preprocessed module, where there is no requirement for the
2204 // original files to exist any more.
2205 const HeaderFileInfo Empty; // So we can take a reference.
2206 if (WritingModule) {
2207 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2208 while (!Worklist.empty()) {
2209 Module *M = Worklist.pop_back_val();
2210 // We don't care about headers in unimportable submodules.
2211 if (M->isUnimportable())
2212 continue;
2213
2214 // Map to disk files where possible, to pick up any missing stat
2215 // information. This also means we don't need to check the unresolved
2216 // headers list when emitting resolved headers in the first loop below.
2217 // FIXME: It'd be preferable to avoid doing this if we were given
2218 // sufficient stat information in the module map.
2219 HS.getModuleMap().resolveHeaderDirectives(Mod: M, /*File=*/std::nullopt);
2220
2221 // If the file didn't exist, we can still create a module if we were given
2222 // enough information in the module map.
2223 for (const auto &U : M->MissingHeaders) {
2224 // Check that we were given enough information to build a module
2225 // without this file existing on disk.
2226 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
2227 PP->Diag(Loc: U.FileNameLoc, DiagID: diag::err_module_no_size_mtime_for_header)
2228 << WritingModule->getFullModuleName() << U.Size.has_value()
2229 << U.FileName;
2230 continue;
2231 }
2232
2233 // Form the effective relative pathname for the file.
2234 SmallString<128> Filename(M->Directory->getName());
2235 llvm::sys::path::append(path&: Filename, a: U.FileName);
2236 PreparePathForOutput(Path&: Filename);
2237
2238 StringRef FilenameDup = strdup(s: Filename.c_str());
2239 SavedStrings.push_back(Elt: FilenameDup.data());
2240
2241 HeaderFileInfoTrait::key_type Key = {
2242 .Filename: FilenameDup, .Size: *U.Size, .ModTime: IncludeTimestamps ? *U.ModTime : 0};
2243 HeaderFileInfoTrait::data_type Data = {
2244 Empty, false, {}, {M, ModuleMap::headerKindToRole(Kind: U.Kind)}};
2245 // FIXME: Deal with cases where there are multiple unresolved header
2246 // directives in different submodules for the same header.
2247 Generator.insert(Key, Data, InfoObj&: GeneratorTrait);
2248 ++NumHeaderSearchEntries;
2249 }
2250 auto SubmodulesRange = M->submodules();
2251 Worklist.append(in_start: SubmodulesRange.begin(), in_end: SubmodulesRange.end());
2252 }
2253 }
2254
2255 HS.forEachExistingLocalFileInfo(
2256 Fn: [&](FileEntryRef File, const HeaderFileInfo &HFI) {
2257 if (!HFI.isCompilingModuleHeader && HFI.isModuleHeader)
2258 return; // Header file info is tracked by the owning module file.
2259 if (!HFI.isCompilingModuleHeader && !HFI.IsLocallyIncluded)
2260 return; // Header file info is tracked by the including module file.
2261
2262 // Massage the file path into an appropriate form.
2263 StringRef Filename = File.getName();
2264 SmallString<128> FilenameTmp(Filename);
2265 if (PreparePathForOutput(Path&: FilenameTmp)) {
2266 // If we performed any translation on the file name at all, we need to
2267 // save this string, since the generator will refer to it later.
2268 Filename = StringRef(strdup(s: FilenameTmp.c_str()));
2269 SavedStrings.push_back(Elt: Filename.data());
2270 }
2271
2272 bool Included = HFI.IsLocallyIncluded || PP->alreadyIncluded(File);
2273
2274 HeaderFileInfoTrait::key_type Key = {
2275 .Filename: Filename, .Size: File.getSize(),
2276 .ModTime: getTimestampForOutput(ModTime: File.getModificationTime())};
2277 HeaderFileInfoTrait::data_type Data = {
2278 HFI,
2279 Included,
2280 HS.getModuleMap().findResolvedModulesForHeader(File),
2281 {}};
2282 Generator.insert(Key, Data, InfoObj&: GeneratorTrait);
2283 ++NumHeaderSearchEntries;
2284 });
2285
2286 // Create the on-disk hash table in a buffer.
2287 SmallString<4096> TableData;
2288 uint32_t BucketOffset;
2289 {
2290 using namespace llvm::support;
2291
2292 llvm::raw_svector_ostream Out(TableData);
2293 // Make sure that no bucket is at offset 0
2294 endian::write<uint32_t>(os&: Out, value: 0, endian: llvm::endianness::little);
2295 BucketOffset = Generator.Emit(Out, InfoObj&: GeneratorTrait);
2296 }
2297
2298 // Create a blob abbreviation
2299 using namespace llvm;
2300
2301 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2302 Abbrev->Add(OpInfo: BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2303 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2304 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2305 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2306 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2307 unsigned TableAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2308
2309 // Write the header search table
2310 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2311 NumHeaderSearchEntries, TableData.size()};
2312 Stream.EmitRecordWithBlob(Abbrev: TableAbbrev, Vals: Record, Blob: TableData);
2313
2314 // Free all of the strings we had to duplicate.
2315 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2316 free(ptr: const_cast<char *>(SavedStrings[I]));
2317}
2318
2319static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2320 unsigned SLocBufferBlobCompressedAbbrv,
2321 unsigned SLocBufferBlobAbbrv) {
2322 using RecordDataType = ASTWriter::RecordData::value_type;
2323
2324 // Compress the buffer if possible. We expect that almost all PCM
2325 // consumers will not want its contents.
2326 SmallVector<uint8_t, 0> CompressedBuffer;
2327 if (llvm::compression::zstd::isAvailable()) {
2328 llvm::compression::zstd::compress(
2329 Input: llvm::arrayRefFromStringRef(Input: Blob.drop_back(N: 1)), CompressedBuffer, Level: 9);
2330 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED, Blob.size() - 1};
2331 Stream.EmitRecordWithBlob(Abbrev: SLocBufferBlobCompressedAbbrv, Vals: Record,
2332 Blob: llvm::toStringRef(Input: CompressedBuffer));
2333 return;
2334 }
2335 if (llvm::compression::zlib::isAvailable()) {
2336 llvm::compression::zlib::compress(
2337 Input: llvm::arrayRefFromStringRef(Input: Blob.drop_back(N: 1)), CompressedBuffer);
2338 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED, Blob.size() - 1};
2339 Stream.EmitRecordWithBlob(Abbrev: SLocBufferBlobCompressedAbbrv, Vals: Record,
2340 Blob: llvm::toStringRef(Input: CompressedBuffer));
2341 return;
2342 }
2343
2344 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2345 Stream.EmitRecordWithBlob(Abbrev: SLocBufferBlobAbbrv, Vals: Record, Blob);
2346}
2347
2348/// Writes the block containing the serialized form of the
2349/// source manager.
2350///
2351/// TODO: We should probably use an on-disk hash table (stored in a
2352/// blob), indexed based on the file name, so that we only create
2353/// entries for files that we actually need. In the common case (no
2354/// errors), we probably won't have to create file entries for any of
2355/// the files in the AST.
2356void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr) {
2357 RecordData Record;
2358
2359 // Enter the source manager block.
2360 Stream.EnterSubblock(BlockID: SOURCE_MANAGER_BLOCK_ID, CodeLen: 4);
2361 const uint64_t SourceManagerBlockOffset = Stream.GetCurrentBitNo();
2362
2363 // Abbreviations for the various kinds of source-location entries.
2364 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2365 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2366 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, Compressed: false);
2367 unsigned SLocBufferBlobCompressedAbbrv =
2368 CreateSLocBufferBlobAbbrev(Stream, Compressed: true);
2369 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2370
2371 // Write out the source location entry table. We skip the first
2372 // entry, which is always the same dummy entry.
2373 std::vector<uint32_t> SLocEntryOffsets;
2374 uint64_t SLocEntryOffsetsBase = Stream.GetCurrentBitNo();
2375 SLocEntryOffsets.reserve(n: SourceMgr.local_sloc_entry_size() - 1);
2376 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2377 I != N; ++I) {
2378 // Get this source location entry.
2379 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(Index: I);
2380 FileID FID = FileID::get(V: I);
2381 assert(&SourceMgr.getSLocEntry(FID) == SLoc);
2382
2383 // Record the offset of this source-location entry.
2384 uint64_t Offset = Stream.GetCurrentBitNo() - SLocEntryOffsetsBase;
2385 assert((Offset >> 32) == 0 && "SLocEntry offset too large");
2386
2387 // Figure out which record code to use.
2388 unsigned Code;
2389 if (SLoc->isFile()) {
2390 const SrcMgr::ContentCache *Cache = &SLoc->getFile().getContentCache();
2391 if (Cache->OrigEntry) {
2392 Code = SM_SLOC_FILE_ENTRY;
2393 } else
2394 Code = SM_SLOC_BUFFER_ENTRY;
2395 } else
2396 Code = SM_SLOC_EXPANSION_ENTRY;
2397 Record.clear();
2398 Record.push_back(Elt: Code);
2399
2400 if (SLoc->isFile()) {
2401 const SrcMgr::FileInfo &File = SLoc->getFile();
2402 const SrcMgr::ContentCache *Content = &File.getContentCache();
2403 // Do not emit files that were not listed as inputs.
2404 if (!IsSLocAffecting[I])
2405 continue;
2406 SLocEntryOffsets.push_back(x: Offset);
2407 // Starting offset of this entry within this module, so skip the dummy.
2408 Record.push_back(Elt: getAdjustedOffset(Offset: SLoc->getOffset()) - 2);
2409 AddSourceLocation(Loc: getAffectingIncludeLoc(SourceMgr, File), Record);
2410 Record.push_back(Elt: File.getFileCharacteristic()); // FIXME: stable encoding
2411 Record.push_back(Elt: File.hasLineDirectives());
2412
2413 bool EmitBlob = false;
2414 if (Content->OrigEntry) {
2415 assert(Content->OrigEntry == Content->ContentsEntry &&
2416 "Writing to AST an overridden file is not supported");
2417
2418 // The source location entry is a file. Emit input file ID.
2419 assert(InputFileIDs[*Content->OrigEntry] != 0 && "Missed file entry");
2420 Record.push_back(Elt: InputFileIDs[*Content->OrigEntry]);
2421
2422 Record.push_back(Elt: getAdjustedNumCreatedFIDs(FID));
2423
2424 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(Val: FID);
2425 if (FDI != FileDeclIDs.end()) {
2426 Record.push_back(Elt: FDI->second->FirstDeclIndex);
2427 Record.push_back(Elt: FDI->second->DeclIDs.size());
2428 } else {
2429 Record.push_back(Elt: 0);
2430 Record.push_back(Elt: 0);
2431 }
2432
2433 Stream.EmitRecordWithAbbrev(Abbrev: SLocFileAbbrv, Vals: Record);
2434
2435 if (Content->BufferOverridden || Content->IsTransient)
2436 EmitBlob = true;
2437 } else {
2438 // The source location entry is a buffer. The blob associated
2439 // with this entry contains the contents of the buffer.
2440
2441 // We add one to the size so that we capture the trailing NULL
2442 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2443 // the reader side).
2444 std::optional<llvm::MemoryBufferRef> Buffer = Content->getBufferOrNone(
2445 Diag&: SourceMgr.getDiagnostics(), FM&: SourceMgr.getFileManager());
2446 StringRef Name = Buffer ? Buffer->getBufferIdentifier() : "";
2447 Stream.EmitRecordWithBlob(Abbrev: SLocBufferAbbrv, Vals: Record,
2448 Blob: StringRef(Name.data(), Name.size() + 1));
2449 EmitBlob = true;
2450 }
2451
2452 if (EmitBlob) {
2453 // Include the implicit terminating null character in the on-disk buffer
2454 // if we're writing it uncompressed.
2455 std::optional<llvm::MemoryBufferRef> Buffer = Content->getBufferOrNone(
2456 Diag&: SourceMgr.getDiagnostics(), FM&: SourceMgr.getFileManager());
2457 if (!Buffer)
2458 Buffer = llvm::MemoryBufferRef("<<<INVALID BUFFER>>>", "");
2459 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2460 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2461 SLocBufferBlobAbbrv);
2462 }
2463 } else {
2464 // The source location entry is a macro expansion.
2465 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2466 SLocEntryOffsets.push_back(x: Offset);
2467 // Starting offset of this entry within this module, so skip the dummy.
2468 Record.push_back(Elt: getAdjustedOffset(Offset: SLoc->getOffset()) - 2);
2469 AddSourceLocation(Loc: Expansion.getSpellingLoc(), Record);
2470 AddSourceLocation(Loc: Expansion.getExpansionLocStart(), Record);
2471 AddSourceLocation(Loc: Expansion.isMacroArgExpansion()
2472 ? SourceLocation()
2473 : Expansion.getExpansionLocEnd(),
2474 Record);
2475 Record.push_back(Elt: Expansion.isExpansionTokenRange());
2476
2477 // Compute the token length for this macro expansion.
2478 SourceLocation::UIntTy NextOffset = SourceMgr.getNextLocalOffset();
2479 if (I + 1 != N)
2480 NextOffset = SourceMgr.getLocalSLocEntry(Index: I + 1).getOffset();
2481 Record.push_back(Elt: getAdjustedOffset(Offset: NextOffset - SLoc->getOffset()) - 1);
2482 Stream.EmitRecordWithAbbrev(Abbrev: SLocExpansionAbbrv, Vals: Record);
2483 }
2484 }
2485
2486 Stream.ExitBlock();
2487
2488 if (SLocEntryOffsets.empty())
2489 return;
2490
2491 // Write the source-location offsets table into the AST block. This
2492 // table is used for lazily loading source-location information.
2493 using namespace llvm;
2494
2495 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2496 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2497 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2498 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2499 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2500 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2501 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2502 {
2503 RecordData::value_type Record[] = {
2504 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2505 getAdjustedOffset(Offset: SourceMgr.getNextLocalOffset()) - 1 /* skip dummy */,
2506 SLocEntryOffsetsBase - SourceManagerBlockOffset};
2507 Stream.EmitRecordWithBlob(Abbrev: SLocOffsetsAbbrev, Vals: Record,
2508 Blob: bytes(v: SLocEntryOffsets));
2509 }
2510
2511 // Write the line table. It depends on remapping working, so it must come
2512 // after the source location offsets.
2513 if (SourceMgr.hasLineTable()) {
2514 LineTableInfo &LineTable = SourceMgr.getLineTable();
2515
2516 Record.clear();
2517
2518 // Emit the needed file names.
2519 llvm::DenseMap<int, int> FilenameMap;
2520 FilenameMap[-1] = -1; // For unspecified filenames.
2521 for (const auto &L : LineTable) {
2522 if (L.first.ID < 0)
2523 continue;
2524 for (auto &LE : L.second) {
2525 if (FilenameMap.insert(KV: std::make_pair(x: LE.FilenameID,
2526 y: FilenameMap.size() - 1)).second)
2527 AddPath(Path: LineTable.getFilename(ID: LE.FilenameID), Record);
2528 }
2529 }
2530 Record.push_back(Elt: 0);
2531
2532 // Emit the line entries
2533 for (const auto &L : LineTable) {
2534 // Only emit entries for local files.
2535 if (L.first.ID < 0)
2536 continue;
2537
2538 AddFileID(FID: L.first, Record);
2539
2540 // Emit the line entries
2541 Record.push_back(Elt: L.second.size());
2542 for (const auto &LE : L.second) {
2543 Record.push_back(Elt: LE.FileOffset);
2544 Record.push_back(Elt: LE.LineNo);
2545 Record.push_back(Elt: FilenameMap[LE.FilenameID]);
2546 Record.push_back(Elt: (unsigned)LE.FileKind);
2547 Record.push_back(Elt: LE.IncludeOffset);
2548 }
2549 }
2550
2551 Stream.EmitRecord(Code: SOURCE_MANAGER_LINE_TABLE, Vals: Record);
2552 }
2553}
2554
2555//===----------------------------------------------------------------------===//
2556// Preprocessor Serialization
2557//===----------------------------------------------------------------------===//
2558
2559static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2560 const Preprocessor &PP) {
2561 if (MacroInfo *MI = MD->getMacroInfo())
2562 if (MI->isBuiltinMacro())
2563 return true;
2564
2565 if (IsModule) {
2566 SourceLocation Loc = MD->getLocation();
2567 if (Loc.isInvalid())
2568 return true;
2569 if (PP.getSourceManager().getFileID(SpellingLoc: Loc) == PP.getPredefinesFileID())
2570 return true;
2571 }
2572
2573 return false;
2574}
2575
2576/// Writes the block containing the serialized form of the
2577/// preprocessor.
2578void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2579 uint64_t MacroOffsetsBase = Stream.GetCurrentBitNo();
2580
2581 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2582 if (PPRec)
2583 WritePreprocessorDetail(PPRec&: *PPRec, MacroOffsetsBase);
2584
2585 RecordData Record;
2586 RecordData ModuleMacroRecord;
2587
2588 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2589 if (PP.getCounterValue() != 0) {
2590 RecordData::value_type Record[] = {PP.getCounterValue()};
2591 Stream.EmitRecord(Code: PP_COUNTER_VALUE, Vals: Record);
2592 }
2593
2594 // If we have a recorded #pragma assume_nonnull, remember it so it can be
2595 // replayed when the preamble terminates into the main file.
2596 SourceLocation AssumeNonNullLoc =
2597 PP.getPreambleRecordedPragmaAssumeNonNullLoc();
2598 if (AssumeNonNullLoc.isValid()) {
2599 assert(PP.isRecordingPreamble());
2600 AddSourceLocation(Loc: AssumeNonNullLoc, Record);
2601 Stream.EmitRecord(Code: PP_ASSUME_NONNULL_LOC, Vals: Record);
2602 Record.clear();
2603 }
2604
2605 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2606 assert(!IsModule);
2607 auto SkipInfo = PP.getPreambleSkipInfo();
2608 if (SkipInfo) {
2609 Record.push_back(Elt: true);
2610 AddSourceLocation(Loc: SkipInfo->HashTokenLoc, Record);
2611 AddSourceLocation(Loc: SkipInfo->IfTokenLoc, Record);
2612 Record.push_back(Elt: SkipInfo->FoundNonSkipPortion);
2613 Record.push_back(Elt: SkipInfo->FoundElse);
2614 AddSourceLocation(Loc: SkipInfo->ElseLoc, Record);
2615 } else {
2616 Record.push_back(Elt: false);
2617 }
2618 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2619 AddSourceLocation(Loc: Cond.IfLoc, Record);
2620 Record.push_back(Elt: Cond.WasSkipping);
2621 Record.push_back(Elt: Cond.FoundNonSkip);
2622 Record.push_back(Elt: Cond.FoundElse);
2623 }
2624 Stream.EmitRecord(Code: PP_CONDITIONAL_STACK, Vals: Record);
2625 Record.clear();
2626 }
2627
2628 // Write the safe buffer opt-out region map in PP
2629 for (SourceLocation &S : PP.serializeSafeBufferOptOutMap())
2630 AddSourceLocation(Loc: S, Record);
2631 Stream.EmitRecord(Code: PP_UNSAFE_BUFFER_USAGE, Vals: Record);
2632 Record.clear();
2633
2634 // Enter the preprocessor block.
2635 Stream.EnterSubblock(BlockID: PREPROCESSOR_BLOCK_ID, CodeLen: 3);
2636
2637 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2638 // FIXME: Include a location for the use, and say which one was used.
2639 if (PP.SawDateOrTime())
2640 PP.Diag(Loc: SourceLocation(), DiagID: diag::warn_module_uses_date_time) << IsModule;
2641
2642 // Loop over all the macro directives that are live at the end of the file,
2643 // emitting each to the PP section.
2644
2645 // Construct the list of identifiers with macro directives that need to be
2646 // serialized.
2647 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2648 // It is meaningless to emit macros for named modules. It only wastes times
2649 // and spaces.
2650 if (!isWritingStdCXXNamedModules())
2651 for (auto &Id : PP.getIdentifierTable())
2652 if (Id.second->hadMacroDefinition() &&
2653 (!Id.second->isFromAST() ||
2654 Id.second->hasChangedSinceDeserialization()))
2655 MacroIdentifiers.push_back(Elt: Id.second);
2656 // Sort the set of macro definitions that need to be serialized by the
2657 // name of the macro, to provide a stable ordering.
2658 llvm::sort(C&: MacroIdentifiers, Comp: llvm::deref<std::less<>>());
2659
2660 // Emit the macro directives as a list and associate the offset with the
2661 // identifier they belong to.
2662 for (const IdentifierInfo *Name : MacroIdentifiers) {
2663 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(II: Name);
2664 uint64_t StartOffset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2665 assert((StartOffset >> 32) == 0 && "Macro identifiers offset too large");
2666
2667 // Write out any exported module macros.
2668 bool EmittedModuleMacros = false;
2669 // C+=20 Header Units are compiled module interfaces, but they preserve
2670 // macros that are live (i.e. have a defined value) at the end of the
2671 // compilation. So when writing a header unit, we preserve only the final
2672 // value of each macro (and discard any that are undefined). Header units
2673 // do not have sub-modules (although they might import other header units).
2674 // PCH files, conversely, retain the history of each macro's define/undef
2675 // and of leaf macros in sub modules.
2676 if (IsModule && WritingModule->isHeaderUnit()) {
2677 // This is for the main TU when it is a C++20 header unit.
2678 // We preserve the final state of defined macros, and we do not emit ones
2679 // that are undefined.
2680 if (!MD || shouldIgnoreMacro(MD, IsModule, PP) ||
2681 MD->getKind() == MacroDirective::MD_Undefine)
2682 continue;
2683 AddSourceLocation(Loc: MD->getLocation(), Record);
2684 Record.push_back(Elt: MD->getKind());
2685 if (auto *DefMD = dyn_cast<DefMacroDirective>(Val: MD)) {
2686 Record.push_back(Elt: getMacroRef(MI: DefMD->getInfo(), Name));
2687 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(Val: MD)) {
2688 Record.push_back(Elt: VisMD->isPublic());
2689 }
2690 ModuleMacroRecord.push_back(Elt: getSubmoduleID(Mod: WritingModule));
2691 AddMacroRef(MI: MD->getMacroInfo(), Name, Record&: ModuleMacroRecord);
2692 Stream.EmitRecord(Code: PP_MODULE_MACRO, Vals: ModuleMacroRecord);
2693 ModuleMacroRecord.clear();
2694 EmittedModuleMacros = true;
2695 } else {
2696 // Emit the macro directives in reverse source order.
2697 for (; MD; MD = MD->getPrevious()) {
2698 // Once we hit an ignored macro, we're done: the rest of the chain
2699 // will all be ignored macros.
2700 if (shouldIgnoreMacro(MD, IsModule, PP))
2701 break;
2702 AddSourceLocation(Loc: MD->getLocation(), Record);
2703 Record.push_back(Elt: MD->getKind());
2704 if (auto *DefMD = dyn_cast<DefMacroDirective>(Val: MD)) {
2705 Record.push_back(Elt: getMacroRef(MI: DefMD->getInfo(), Name));
2706 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(Val: MD)) {
2707 Record.push_back(Elt: VisMD->isPublic());
2708 }
2709 }
2710
2711 // We write out exported module macros for PCH as well.
2712 auto Leafs = PP.getLeafModuleMacros(II: Name);
2713 SmallVector<ModuleMacro *, 8> Worklist(Leafs);
2714 llvm::DenseMap<ModuleMacro *, unsigned> Visits;
2715 while (!Worklist.empty()) {
2716 auto *Macro = Worklist.pop_back_val();
2717
2718 // Emit a record indicating this submodule exports this macro.
2719 ModuleMacroRecord.push_back(Elt: getSubmoduleID(Mod: Macro->getOwningModule()));
2720 AddMacroRef(MI: Macro->getMacroInfo(), Name, Record&: ModuleMacroRecord);
2721 for (auto *M : Macro->overrides())
2722 ModuleMacroRecord.push_back(Elt: getSubmoduleID(Mod: M->getOwningModule()));
2723
2724 Stream.EmitRecord(Code: PP_MODULE_MACRO, Vals: ModuleMacroRecord);
2725 ModuleMacroRecord.clear();
2726
2727 // Enqueue overridden macros once we've visited all their ancestors.
2728 for (auto *M : Macro->overrides())
2729 if (++Visits[M] == M->getNumOverridingMacros())
2730 Worklist.push_back(Elt: M);
2731
2732 EmittedModuleMacros = true;
2733 }
2734 }
2735 if (Record.empty() && !EmittedModuleMacros)
2736 continue;
2737
2738 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2739 Stream.EmitRecord(Code: PP_MACRO_DIRECTIVE_HISTORY, Vals: Record);
2740 Record.clear();
2741 }
2742
2743 /// Offsets of each of the macros into the bitstream, indexed by
2744 /// the local macro ID
2745 ///
2746 /// For each identifier that is associated with a macro, this map
2747 /// provides the offset into the bitstream where that macro is
2748 /// defined.
2749 std::vector<uint32_t> MacroOffsets;
2750
2751 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2752 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2753 MacroInfo *MI = MacroInfosToEmit[I].MI;
2754 MacroID ID = MacroInfosToEmit[I].ID;
2755
2756 if (ID < FirstMacroID) {
2757 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?");
2758 continue;
2759 }
2760
2761 // Record the local offset of this macro.
2762 unsigned Index = ID - FirstMacroID;
2763 if (Index >= MacroOffsets.size())
2764 MacroOffsets.resize(new_size: Index + 1);
2765
2766 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2767 assert((Offset >> 32) == 0 && "Macro offset too large");
2768 MacroOffsets[Index] = Offset;
2769
2770 AddIdentifierRef(II: Name, Record);
2771 AddSourceLocation(Loc: MI->getDefinitionLoc(), Record);
2772 AddSourceLocation(Loc: MI->getDefinitionEndLoc(), Record);
2773 Record.push_back(Elt: MI->isUsed());
2774 Record.push_back(Elt: MI->isUsedForHeaderGuard());
2775 Record.push_back(Elt: MI->getNumTokens());
2776 unsigned Code;
2777 if (MI->isObjectLike()) {
2778 Code = PP_MACRO_OBJECT_LIKE;
2779 } else {
2780 Code = PP_MACRO_FUNCTION_LIKE;
2781
2782 Record.push_back(Elt: MI->isC99Varargs());
2783 Record.push_back(Elt: MI->isGNUVarargs());
2784 Record.push_back(Elt: MI->hasCommaPasting());
2785 Record.push_back(Elt: MI->getNumParams());
2786 for (const IdentifierInfo *Param : MI->params())
2787 AddIdentifierRef(II: Param, Record);
2788 }
2789
2790 // If we have a detailed preprocessing record, record the macro definition
2791 // ID that corresponds to this macro.
2792 if (PPRec)
2793 Record.push_back(Elt: MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2794
2795 Stream.EmitRecord(Code, Vals: Record);
2796 Record.clear();
2797
2798 // Emit the tokens array.
2799 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2800 // Note that we know that the preprocessor does not have any annotation
2801 // tokens in it because they are created by the parser, and thus can't
2802 // be in a macro definition.
2803 const Token &Tok = MI->getReplacementToken(Tok: TokNo);
2804 AddToken(Tok, Record);
2805 Stream.EmitRecord(Code: PP_TOKEN, Vals: Record);
2806 Record.clear();
2807 }
2808 ++NumMacros;
2809 }
2810
2811 Stream.ExitBlock();
2812
2813 // Write the offsets table for macro IDs.
2814 using namespace llvm;
2815
2816 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2817 Abbrev->Add(OpInfo: BitCodeAbbrevOp(MACRO_OFFSET));
2818 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2819 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2820 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2821
2822 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2823 {
2824 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2825 MacroOffsetsBase - ASTBlockStartOffset};
2826 Stream.EmitRecordWithBlob(Abbrev: MacroOffsetAbbrev, Vals: Record, Blob: bytes(v: MacroOffsets));
2827 }
2828}
2829
2830void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec,
2831 uint64_t MacroOffsetsBase) {
2832 if (PPRec.local_begin() == PPRec.local_end())
2833 return;
2834
2835 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2836
2837 // Enter the preprocessor block.
2838 Stream.EnterSubblock(BlockID: PREPROCESSOR_DETAIL_BLOCK_ID, CodeLen: 3);
2839
2840 // If the preprocessor has a preprocessing record, emit it.
2841 unsigned NumPreprocessingRecords = 0;
2842 using namespace llvm;
2843
2844 // Set up the abbreviation for
2845 unsigned InclusionAbbrev = 0;
2846 {
2847 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2848 Abbrev->Add(OpInfo: BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2849 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2850 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2851 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2852 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2853 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2854 InclusionAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2855 }
2856
2857 unsigned FirstPreprocessorEntityID = NUM_PREDEF_PP_ENTITY_IDS;
2858 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2859 RecordData Record;
2860 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2861 EEnd = PPRec.local_end();
2862 E != EEnd;
2863 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2864 Record.clear();
2865
2866 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2867 assert((Offset >> 32) == 0 && "Preprocessed entity offset too large");
2868 SourceRange R = getAdjustedRange(Range: (*E)->getSourceRange());
2869 PreprocessedEntityOffsets.emplace_back(
2870 Args: getRawSourceLocationEncoding(Loc: R.getBegin()),
2871 Args: getRawSourceLocationEncoding(Loc: R.getEnd()), Args&: Offset);
2872
2873 if (auto *MD = dyn_cast<MacroDefinitionRecord>(Val: *E)) {
2874 // Record this macro definition's ID.
2875 MacroDefinitions[MD] = NextPreprocessorEntityID;
2876
2877 AddIdentifierRef(II: MD->getName(), Record);
2878 Stream.EmitRecord(Code: PPD_MACRO_DEFINITION, Vals: Record);
2879 continue;
2880 }
2881
2882 if (auto *ME = dyn_cast<MacroExpansion>(Val: *E)) {
2883 Record.push_back(Elt: ME->isBuiltinMacro());
2884 if (ME->isBuiltinMacro())
2885 AddIdentifierRef(II: ME->getName(), Record);
2886 else
2887 Record.push_back(Elt: MacroDefinitions[ME->getDefinition()]);
2888 Stream.EmitRecord(Code: PPD_MACRO_EXPANSION, Vals: Record);
2889 continue;
2890 }
2891
2892 if (auto *ID = dyn_cast<InclusionDirective>(Val: *E)) {
2893 Record.push_back(Elt: PPD_INCLUSION_DIRECTIVE);
2894 Record.push_back(Elt: ID->getFileName().size());
2895 Record.push_back(Elt: ID->wasInQuotes());
2896 Record.push_back(Elt: static_cast<unsigned>(ID->getKind()));
2897 Record.push_back(Elt: ID->importedModule());
2898 SmallString<64> Buffer;
2899 Buffer += ID->getFileName();
2900 // Check that the FileEntry is not null because it was not resolved and
2901 // we create a PCH even with compiler errors.
2902 if (ID->getFile())
2903 Buffer += ID->getFile()->getName();
2904 Stream.EmitRecordWithBlob(Abbrev: InclusionAbbrev, Vals: Record, Blob: Buffer);
2905 continue;
2906 }
2907
2908 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter");
2909 }
2910 Stream.ExitBlock();
2911
2912 // Write the offsets table for the preprocessing record.
2913 if (NumPreprocessingRecords > 0) {
2914 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords);
2915
2916 // Write the offsets table for identifier IDs.
2917 using namespace llvm;
2918
2919 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2920 Abbrev->Add(OpInfo: BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2921 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2922 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2923
2924 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS};
2925 Stream.EmitRecordWithBlob(Abbrev: PPEOffsetAbbrev, Vals: Record,
2926 Blob: bytes(v: PreprocessedEntityOffsets));
2927 }
2928
2929 // Write the skipped region table for the preprocessing record.
2930 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2931 if (SkippedRanges.size() > 0) {
2932 std::vector<PPSkippedRange> SerializedSkippedRanges;
2933 SerializedSkippedRanges.reserve(n: SkippedRanges.size());
2934 for (auto const& Range : SkippedRanges)
2935 SerializedSkippedRanges.emplace_back(
2936 args: getRawSourceLocationEncoding(Loc: Range.getBegin()),
2937 args: getRawSourceLocationEncoding(Loc: Range.getEnd()));
2938
2939 using namespace llvm;
2940 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2941 Abbrev->Add(OpInfo: BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2942 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2943 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
2944
2945 Record.clear();
2946 Record.push_back(Elt: PPD_SKIPPED_RANGES);
2947 Stream.EmitRecordWithBlob(Abbrev: PPESkippedRangeAbbrev, Vals: Record,
2948 Blob: bytes(v: SerializedSkippedRanges));
2949 }
2950}
2951
2952unsigned ASTWriter::getLocalOrImportedSubmoduleID(const Module *Mod) {
2953 if (!Mod)
2954 return 0;
2955
2956 auto Known = SubmoduleIDs.find(Val: Mod);
2957 if (Known != SubmoduleIDs.end())
2958 return Known->second;
2959
2960 auto *Top = Mod->getTopLevelModule();
2961 if (Top != WritingModule &&
2962 (getLangOpts().CompilingPCH ||
2963 !Top->fullModuleNameIs(nameParts: StringRef(getLangOpts().CurrentModule))))
2964 return 0;
2965
2966 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2967}
2968
2969unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2970 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2971 // FIXME: This can easily happen, if we have a reference to a submodule that
2972 // did not result in us loading a module file for that submodule. For
2973 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2974 // assert((ID || !Mod) &&
2975 // "asked for module ID for non-local, non-imported module");
2976 return ID;
2977}
2978
2979void ASTWriter::WriteSubmodules(Module *WritingModule, ASTContext *Context) {
2980 // Enter the submodule description block.
2981 Stream.EnterSubblock(BlockID: SUBMODULE_BLOCK_ID, /*bits for abbreviations*/CodeLen: 5);
2982
2983 // Write the abbreviations needed for the submodules block.
2984 using namespace llvm;
2985
2986 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2987 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2988 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2989 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2990 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // Kind
2991 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Definition location
2992 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 4)); // Inferred allowed by
2993 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2994 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2995 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2996 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2997 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2998 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2999 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
3000 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
3001 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
3002 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NamedModuleHasN...
3003 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3004 unsigned DefinitionAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3005
3006 Abbrev = std::make_shared<BitCodeAbbrev>();
3007 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
3008 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3009 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3010
3011 Abbrev = std::make_shared<BitCodeAbbrev>();
3012 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_HEADER));
3013 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3014 unsigned HeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3015
3016 Abbrev = std::make_shared<BitCodeAbbrev>();
3017 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
3018 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3019 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3020
3021 Abbrev = std::make_shared<BitCodeAbbrev>();
3022 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
3023 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3024 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3025
3026 Abbrev = std::make_shared<BitCodeAbbrev>();
3027 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_REQUIRES));
3028 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
3029 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
3030 unsigned RequiresAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3031
3032 Abbrev = std::make_shared<BitCodeAbbrev>();
3033 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
3034 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3035 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3036
3037 Abbrev = std::make_shared<BitCodeAbbrev>();
3038 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
3039 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3040 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3041
3042 Abbrev = std::make_shared<BitCodeAbbrev>();
3043 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
3044 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3045 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3046
3047 Abbrev = std::make_shared<BitCodeAbbrev>();
3048 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
3049 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3050 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3051
3052 Abbrev = std::make_shared<BitCodeAbbrev>();
3053 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
3054 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
3055 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
3056 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3057
3058 Abbrev = std::make_shared<BitCodeAbbrev>();
3059 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
3060 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
3061 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3062
3063 Abbrev = std::make_shared<BitCodeAbbrev>();
3064 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_CONFLICT));
3065 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
3066 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
3067 unsigned ConflictAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3068
3069 Abbrev = std::make_shared<BitCodeAbbrev>();
3070 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
3071 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
3072 unsigned ExportAsAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3073
3074 Abbrev = std::make_shared<BitCodeAbbrev>();
3075 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_CHILD));
3076 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Child submodule ID
3077 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Child name
3078 unsigned ChildAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3079
3080 SmallVector<uint64_t> SubmoduleOffsets;
3081 uint64_t SubmoduleOffsetBase = Stream.GetCurrentBitNo();
3082
3083 unsigned TopLevelID = getSubmoduleID(Mod: WritingModule);
3084
3085 // Write all of the submodules.
3086 std::queue<Module *> Q;
3087 Q.push(x: WritingModule);
3088 while (!Q.empty()) {
3089 Module *Mod = Q.front();
3090 Q.pop();
3091 unsigned ID = getSubmoduleID(Mod);
3092 if (ID < FirstSubmoduleID) {
3093 assert(0 && "Loaded submodule entered WritingModule ?");
3094 continue;
3095 }
3096
3097 // Record the local offset of this submodule.
3098 unsigned Index = ID - FirstSubmoduleID;
3099 if (Index >= SubmoduleOffsets.size())
3100 SubmoduleOffsets.resize(N: Index + 1);
3101
3102 uint64_t Offset = Stream.GetCurrentBitNo() - SubmoduleOffsetBase;
3103 assert((Offset >> 32) == 0 && "Submodule offset too large");
3104 SubmoduleOffsets[Index] = Offset;
3105
3106 uint64_t ParentID = 0;
3107 if (Mod->Parent) {
3108 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?");
3109 ParentID = SubmoduleIDs[Mod->Parent];
3110 }
3111
3112 SourceLocationEncoding::RawLocEncoding DefinitionLoc =
3113 getRawSourceLocationEncoding(Loc: getAdjustedLocation(Loc: Mod->DefinitionLoc));
3114
3115 ModuleMap &ModMap = PP->getHeaderSearchInfo().getModuleMap();
3116 FileID UnadjustedInferredFID;
3117 if (Mod->IsInferred)
3118 UnadjustedInferredFID = ModMap.getModuleMapFileIDForUniquing(M: Mod);
3119 int InferredFID = getAdjustedFileID(FID: UnadjustedInferredFID).getOpaqueValue();
3120
3121 // Emit the definition of the block.
3122 {
3123 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
3124 ID,
3125 ParentID,
3126 (RecordData::value_type)Mod->Kind,
3127 DefinitionLoc,
3128 (RecordData::value_type)InferredFID,
3129 Mod->IsFramework,
3130 Mod->IsExplicit,
3131 Mod->IsSystem,
3132 Mod->IsExternC,
3133 Mod->InferSubmodules,
3134 Mod->InferExplicitSubmodules,
3135 Mod->InferExportWildcard,
3136 Mod->ConfigMacrosExhaustive,
3137 Mod->ModuleMapIsPrivate,
3138 Mod->NamedModuleHasInit};
3139 Stream.EmitRecordWithBlob(Abbrev: DefinitionAbbrev, Vals: Record, Blob: Mod->Name);
3140 }
3141
3142 // Emit the requirements.
3143 for (const auto &R : Mod->Requirements) {
3144 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.RequiredState};
3145 Stream.EmitRecordWithBlob(Abbrev: RequiresAbbrev, Vals: Record, Blob: R.FeatureName);
3146 }
3147
3148 // Emit the umbrella header, if there is one.
3149 if (std::optional<Module::Header> UmbrellaHeader =
3150 Mod->getUmbrellaHeaderAsWritten()) {
3151 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
3152 Stream.EmitRecordWithBlob(Abbrev: UmbrellaAbbrev, Vals: Record,
3153 Blob: UmbrellaHeader->NameAsWritten);
3154 } else if (std::optional<Module::DirectoryName> UmbrellaDir =
3155 Mod->getUmbrellaDirAsWritten()) {
3156 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
3157 Stream.EmitRecordWithBlob(Abbrev: UmbrellaDirAbbrev, Vals: Record,
3158 Blob: UmbrellaDir->NameAsWritten);
3159 }
3160
3161 // Emit the headers.
3162 struct {
3163 unsigned RecordKind;
3164 unsigned Abbrev;
3165 Module::HeaderKind HeaderKind;
3166 } HeaderLists[] = {
3167 {.RecordKind: SUBMODULE_HEADER, .Abbrev: HeaderAbbrev, .HeaderKind: Module::HK_Normal},
3168 {.RecordKind: SUBMODULE_TEXTUAL_HEADER, .Abbrev: TextualHeaderAbbrev, .HeaderKind: Module::HK_Textual},
3169 {.RecordKind: SUBMODULE_PRIVATE_HEADER, .Abbrev: PrivateHeaderAbbrev, .HeaderKind: Module::HK_Private},
3170 {.RecordKind: SUBMODULE_PRIVATE_TEXTUAL_HEADER, .Abbrev: PrivateTextualHeaderAbbrev,
3171 .HeaderKind: Module::HK_PrivateTextual},
3172 {.RecordKind: SUBMODULE_EXCLUDED_HEADER, .Abbrev: ExcludedHeaderAbbrev, .HeaderKind: Module::HK_Excluded}
3173 };
3174 for (const auto &HL : HeaderLists) {
3175 RecordData::value_type Record[] = {HL.RecordKind};
3176 for (const auto &H : Mod->getHeaders(HK: HL.HeaderKind))
3177 Stream.EmitRecordWithBlob(Abbrev: HL.Abbrev, Vals: Record, Blob: H.NameAsWritten);
3178 }
3179
3180 // Emit the top headers.
3181 {
3182 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
3183 for (FileEntryRef H : Mod->getTopHeaders(FileMgr&: PP->getFileManager())) {
3184 SmallString<128> HeaderName(H.getName());
3185 PreparePathForOutput(Path&: HeaderName);
3186 Stream.EmitRecordWithBlob(Abbrev: TopHeaderAbbrev, Vals: Record, Blob: HeaderName);
3187 }
3188 }
3189
3190 // Emit the imports.
3191 if (!Mod->Imports.empty()) {
3192 RecordData Record;
3193 for (Module *I : Mod->Imports)
3194 Record.push_back(Elt: getSubmoduleID(Mod: I));
3195 Stream.EmitRecord(Code: SUBMODULE_IMPORTS, Vals: Record);
3196 }
3197
3198 // Emit the modules affecting compilation that were not imported.
3199 if (!Mod->AffectingClangModules.empty()) {
3200 RecordData Record;
3201 for (Module *I : Mod->AffectingClangModules)
3202 Record.push_back(Elt: getSubmoduleID(Mod: I));
3203 Stream.EmitRecord(Code: SUBMODULE_AFFECTING_MODULES, Vals: Record);
3204 }
3205
3206 // Emit the exports.
3207 if (!Mod->Exports.empty()) {
3208 RecordData Record;
3209 for (const auto &E : Mod->Exports) {
3210 // FIXME: This may fail; we don't require that all exported modules
3211 // are local or imported.
3212 Record.push_back(Elt: getSubmoduleID(Mod: E.first));
3213 Record.push_back(Elt: E.second);
3214 }
3215 Stream.EmitRecord(Code: SUBMODULE_EXPORTS, Vals: Record);
3216 }
3217
3218 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
3219 // Might be unnecessary as use declarations are only used to build the
3220 // module itself.
3221
3222 // TODO: Consider serializing undeclared uses of modules.
3223
3224 // Emit the link libraries.
3225 for (const auto &LL : Mod->LinkLibraries) {
3226 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
3227 LL.IsFramework};
3228 Stream.EmitRecordWithBlob(Abbrev: LinkLibraryAbbrev, Vals: Record, Blob: LL.Library);
3229 }
3230
3231 // Emit the conflicts.
3232 for (const auto &C : Mod->Conflicts) {
3233 // FIXME: This may fail; we don't require that all conflicting modules
3234 // are local or imported.
3235 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3236 getSubmoduleID(Mod: C.Other)};
3237 Stream.EmitRecordWithBlob(Abbrev: ConflictAbbrev, Vals: Record, Blob: C.Message);
3238 }
3239
3240 // Emit the configuration macros.
3241 for (const auto &CM : Mod->ConfigMacros) {
3242 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3243 Stream.EmitRecordWithBlob(Abbrev: ConfigMacroAbbrev, Vals: Record, Blob: CM);
3244 }
3245
3246 // Emit the reachable initializers.
3247 // The initializer may only be unreachable in reduced BMI.
3248 if (Context && !GeneratingReducedBMI) {
3249 RecordData Inits;
3250 for (Decl *D : Context->getModuleInitializers(M: Mod))
3251 if (wasDeclEmitted(D))
3252 AddDeclRef(D, Record&: Inits);
3253 if (!Inits.empty())
3254 Stream.EmitRecord(Code: SUBMODULE_INITIALIZERS, Vals: Inits);
3255 }
3256
3257 // Emit the name of the re-exported module, if any.
3258 if (!Mod->ExportAsModule.empty()) {
3259 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3260 Stream.EmitRecordWithBlob(Abbrev: ExportAsAbbrev, Vals: Record, Blob: Mod->ExportAsModule);
3261 }
3262
3263 // Emit one SUBMODULE_CHILD record per direct child so the reader can
3264 // populate PendingSubmodules and demand-load children by name.
3265 for (Module *Child : Mod->submodules()) {
3266 RecordData::value_type Record[] = {SUBMODULE_CHILD,
3267 getSubmoduleID(Mod: Child)};
3268 Stream.EmitRecordWithBlob(Abbrev: ChildAbbrev, Vals: Record, Blob: Child->Name);
3269 }
3270
3271 // Emit the sentinel signifying the end of this submodule.
3272 {
3273 RecordData Record;
3274 Stream.EmitRecord(Code: SUBMODULE_END, Vals: Record);
3275 }
3276
3277 // Queue up the submodules of this module.
3278 for (Module *M : Mod->submodules())
3279 Q.push(x: M);
3280 }
3281
3282 Stream.ExitBlock();
3283
3284 assert((NextSubmoduleID - FirstSubmoduleID == SubmoduleOffsets.size()) &&
3285 "Wrong # of submodules; found a reference to a non-local, "
3286 "non-imported submodule?");
3287
3288 Abbrev = std::make_shared<BitCodeAbbrev>();
3289 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SUBMODULE_METADATA));
3290 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Submodule count
3291 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Base submodule ID
3292 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Top-level submod ID
3293 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Submodule offsets
3294 unsigned SubmoduleMetadataAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3295
3296 RecordData::value_type Record[] = {
3297 SUBMODULE_METADATA, SubmoduleOffsets.size(),
3298 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS, TopLevelID};
3299 Stream.EmitRecordWithBlob(Abbrev: SubmoduleMetadataAbbrev, Vals: Record,
3300 Blob: bytes(v: SubmoduleOffsets));
3301}
3302
3303void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3304 bool isModule) {
3305 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3306 DiagStateIDMap;
3307 unsigned CurrID = 0;
3308 RecordData Record;
3309
3310 auto EncodeDiagStateFlags =
3311 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3312 unsigned Result = (unsigned)DS->ExtBehavior;
3313 for (unsigned Val :
3314 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3315 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3316 (unsigned)DS->SuppressSystemWarnings})
3317 Result = (Result << 1) | Val;
3318 return Result;
3319 };
3320
3321 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3322 Record.push_back(Elt: Flags);
3323
3324 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3325 bool IncludeNonPragmaStates) {
3326 // Ensure that the diagnostic state wasn't modified since it was created.
3327 // We will not correctly round-trip this information otherwise.
3328 assert(Flags == EncodeDiagStateFlags(State) &&
3329 "diag state flags vary in single AST file");
3330
3331 // If we ever serialize non-pragma mappings outside the initial state, the
3332 // code below will need to consider more than getDefaultMapping.
3333 assert(!IncludeNonPragmaStates ||
3334 State == Diag.DiagStatesByLoc.FirstDiagState);
3335
3336 unsigned &DiagStateID = DiagStateIDMap[State];
3337 Record.push_back(Elt: DiagStateID);
3338
3339 if (DiagStateID == 0) {
3340 DiagStateID = ++CurrID;
3341 SmallVector<std::pair<unsigned, DiagnosticMapping>> Mappings;
3342
3343 // Add a placeholder for the number of mappings.
3344 auto SizeIdx = Record.size();
3345 Record.emplace_back();
3346 for (const auto &I : *State) {
3347 // Maybe skip non-pragmas.
3348 if (!I.second.isPragma() && !IncludeNonPragmaStates)
3349 continue;
3350 // Skip default mappings. We have a mapping for every diagnostic ever
3351 // emitted, regardless of whether it was customized.
3352 if (!I.second.isPragma() &&
3353 I.second == Diag.getDiagnosticIDs()->getDefaultMapping(DiagID: I.first))
3354 continue;
3355 Mappings.push_back(Elt: I);
3356 }
3357
3358 // Sort by diag::kind for deterministic output.
3359 llvm::sort(C&: Mappings, Comp: llvm::less_first());
3360
3361 for (const auto &I : Mappings) {
3362 Record.push_back(Elt: I.first);
3363 Record.push_back(Elt: I.second.serialize());
3364 }
3365 // Update the placeholder.
3366 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3367 }
3368 };
3369
3370 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3371
3372 // Reserve a spot for the number of locations with state transitions.
3373 auto NumLocationsIdx = Record.size();
3374 Record.emplace_back();
3375
3376 // Emit the state transitions.
3377 unsigned NumLocations = 0;
3378 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3379 if (!FileIDAndFile.first.isValid() ||
3380 !FileIDAndFile.second.HasLocalTransitions)
3381 continue;
3382 ++NumLocations;
3383
3384 AddFileID(FID: FileIDAndFile.first, Record);
3385
3386 Record.push_back(Elt: FileIDAndFile.second.StateTransitions.size());
3387 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3388 Record.push_back(Elt: StatePoint.Offset);
3389 AddDiagState(StatePoint.State, false);
3390 }
3391 }
3392
3393 // Backpatch the number of locations.
3394 Record[NumLocationsIdx] = NumLocations;
3395
3396 // Emit CurDiagStateLoc. Do it last in order to match source order.
3397 //
3398 // This also protects against a hypothetical corner case with simulating
3399 // -Werror settings for implicit modules in the ASTReader, where reading
3400 // CurDiagState out of context could change whether warning pragmas are
3401 // treated as errors.
3402 AddSourceLocation(Loc: Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3403 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3404
3405 // Emit the push stack so that unmatched pushes from a preamble can be
3406 // restored when the main file is parsed. Each entry is a DiagState that
3407 // was active at the time of a `#pragma diagnostic push`.
3408 Record.push_back(Elt: Diag.DiagStateOnPushStack.size());
3409 for (const auto *State : Diag.DiagStateOnPushStack)
3410 AddDiagState(State, false);
3411
3412 Stream.EmitRecord(Code: DIAG_PRAGMA_MAPPINGS, Vals: Record);
3413}
3414
3415//===----------------------------------------------------------------------===//
3416// Type Serialization
3417//===----------------------------------------------------------------------===//
3418
3419/// Write the representation of a type to the AST stream.
3420void ASTWriter::WriteType(ASTContext &Context, QualType T) {
3421 TypeIdx &IdxRef = TypeIdxs[T];
3422 if (IdxRef.getValue() == 0) // we haven't seen this type before.
3423 IdxRef = TypeIdx(0, NextTypeID++);
3424 TypeIdx Idx = IdxRef;
3425
3426 assert(Idx.getModuleFileIndex() == 0 && "Re-writing a type from a prior AST");
3427 assert(Idx.getValue() >= FirstTypeID && "Writing predefined type");
3428
3429 // Emit the type's representation.
3430 uint64_t Offset =
3431 ASTTypeWriter(Context, *this).write(T) - DeclTypesBlockStartOffset;
3432
3433 // Record the offset for this type.
3434 uint64_t Index = Idx.getValue() - FirstTypeID;
3435 if (TypeOffsets.size() == Index)
3436 TypeOffsets.emplace_back(args&: Offset);
3437 else if (TypeOffsets.size() < Index) {
3438 TypeOffsets.resize(new_size: Index + 1);
3439 TypeOffsets[Index].set(Offset);
3440 } else {
3441 llvm_unreachable("Types emitted in wrong order");
3442 }
3443}
3444
3445//===----------------------------------------------------------------------===//
3446// Declaration Serialization
3447//===----------------------------------------------------------------------===//
3448
3449static bool IsInternalDeclFromFileContext(const Decl *D) {
3450 auto *ND = dyn_cast<NamedDecl>(Val: D);
3451 if (!ND)
3452 return false;
3453
3454 if (!D->getDeclContext()->getRedeclContext()->isFileContext())
3455 return false;
3456
3457 return ND->getFormalLinkage() == Linkage::Internal;
3458}
3459
3460/// Write the block containing all of the declaration IDs
3461/// lexically declared within the given DeclContext.
3462///
3463/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3464/// bitstream, or 0 if no block was written.
3465uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3466 const DeclContext *DC) {
3467 if (DC->decls_empty())
3468 return 0;
3469
3470 // In reduced BMI, we don't care the declarations in functions.
3471 if (GeneratingReducedBMI && DC->isFunctionOrMethod())
3472 return 0;
3473
3474 uint64_t Offset = Stream.GetCurrentBitNo();
3475 SmallVector<DeclID, 128> KindDeclPairs;
3476 for (const auto *D : DC->decls()) {
3477 if (DoneWritingDeclsAndTypes && !wasDeclEmitted(D))
3478 continue;
3479
3480 // We don't need to write decls with internal linkage into reduced BMI.
3481 // If such decls gets emitted due to it get used from inline functions,
3482 // the program illegal. However, there are too many use of static inline
3483 // functions in the global module fragment and it will be breaking change
3484 // to forbid that. So we have to allow to emit such declarations from GMF.
3485 if (GeneratingReducedBMI && !D->isFromExplicitGlobalModule() &&
3486 IsInternalDeclFromFileContext(D))
3487 continue;
3488
3489 KindDeclPairs.push_back(Elt: D->getKind());
3490 KindDeclPairs.push_back(Elt: GetDeclRef(D).getRawValue());
3491 }
3492
3493 ++NumLexicalDeclContexts;
3494 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3495 Stream.EmitRecordWithBlob(Abbrev: DeclContextLexicalAbbrev, Vals: Record,
3496 Blob: bytes(v: KindDeclPairs));
3497 return Offset;
3498}
3499
3500void ASTWriter::WriteTypeDeclOffsets() {
3501 using namespace llvm;
3502
3503 // Write the type offsets array
3504 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3505 Abbrev->Add(OpInfo: BitCodeAbbrevOp(TYPE_OFFSET));
3506 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3507 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3508 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3509 {
3510 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size()};
3511 Stream.EmitRecordWithBlob(Abbrev: TypeOffsetAbbrev, Vals: Record, Blob: bytes(v: TypeOffsets));
3512 }
3513
3514 // Write the declaration offsets array
3515 Abbrev = std::make_shared<BitCodeAbbrev>();
3516 Abbrev->Add(OpInfo: BitCodeAbbrevOp(DECL_OFFSET));
3517 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3518 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3519 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3520 {
3521 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size()};
3522 Stream.EmitRecordWithBlob(Abbrev: DeclOffsetAbbrev, Vals: Record, Blob: bytes(v: DeclOffsets));
3523 }
3524}
3525
3526void ASTWriter::WriteFileDeclIDsMap() {
3527 using namespace llvm;
3528
3529 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs;
3530 SortedFileDeclIDs.reserve(N: FileDeclIDs.size());
3531 for (const auto &P : FileDeclIDs)
3532 SortedFileDeclIDs.push_back(Elt: std::make_pair(x: P.first, y: P.second.get()));
3533 llvm::sort(C&: SortedFileDeclIDs, Comp: llvm::less_first());
3534
3535 // Join the vectors of DeclIDs from all files.
3536 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3537 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3538 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3539 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3540 llvm::stable_sort(Range&: Info.DeclIDs);
3541 for (auto &LocDeclEntry : Info.DeclIDs)
3542 FileGroupedDeclIDs.push_back(Elt: LocDeclEntry.second.getRawValue());
3543 }
3544
3545 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3546 Abbrev->Add(OpInfo: BitCodeAbbrevOp(FILE_SORTED_DECLS));
3547 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3548 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3549 unsigned AbbrevCode = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3550 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3551 FileGroupedDeclIDs.size()};
3552 Stream.EmitRecordWithBlob(Abbrev: AbbrevCode, Vals: Record, Blob: bytes(v: FileGroupedDeclIDs));
3553}
3554
3555void ASTWriter::WriteComments(ASTContext &Context) {
3556 Stream.EnterSubblock(BlockID: COMMENTS_BLOCK_ID, CodeLen: 3);
3557 llvm::scope_exit _([this] { Stream.ExitBlock(); });
3558 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3559 return;
3560
3561 RecordData Record;
3562 for (const auto &FO : Context.Comments.OrderedComments) {
3563 for (const auto &OC : FO.second) {
3564 const RawComment *I = OC.second;
3565 Record.clear();
3566 AddSourceRange(Range: I->getSourceRange(), Record);
3567 Record.push_back(Elt: I->getKind());
3568 Record.push_back(Elt: I->isTrailingComment());
3569 Record.push_back(Elt: I->isAlmostTrailingComment());
3570 Stream.EmitRecord(Code: COMMENTS_RAW_COMMENT, Vals: Record);
3571 }
3572 }
3573}
3574
3575//===----------------------------------------------------------------------===//
3576// Global Method Pool and Selector Serialization
3577//===----------------------------------------------------------------------===//
3578
3579namespace {
3580
3581// Trait used for the on-disk hash table used in the method pool.
3582class ASTMethodPoolTrait {
3583 ASTWriter &Writer;
3584
3585public:
3586 using key_type = Selector;
3587 using key_type_ref = key_type;
3588
3589 struct data_type {
3590 SelectorID ID;
3591 ObjCMethodList Instance, Factory;
3592 };
3593 using data_type_ref = const data_type &;
3594
3595 using hash_value_type = unsigned;
3596 using offset_type = unsigned;
3597
3598 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3599
3600 static hash_value_type ComputeHash(Selector Sel) {
3601 return serialization::ComputeHash(Sel);
3602 }
3603
3604 std::pair<unsigned, unsigned>
3605 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3606 data_type_ref Methods) {
3607 unsigned KeyLen =
3608 2 + (Sel.getNumArgs() ? Sel.getNumArgs() * sizeof(IdentifierID)
3609 : sizeof(IdentifierID));
3610 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3611 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3612 Method = Method->getNext())
3613 if (ShouldWriteMethodListNode(Node: Method))
3614 DataLen += sizeof(DeclID);
3615 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3616 Method = Method->getNext())
3617 if (ShouldWriteMethodListNode(Node: Method))
3618 DataLen += sizeof(DeclID);
3619 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3620 }
3621
3622 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3623 using namespace llvm::support;
3624
3625 endian::Writer LE(Out, llvm::endianness::little);
3626 uint64_t Start = Out.tell();
3627 assert((Start >> 32) == 0 && "Selector key offset too large");
3628 Writer.SetSelectorOffset(Sel, Offset: Start);
3629 unsigned N = Sel.getNumArgs();
3630 LE.write<uint16_t>(Val: N);
3631 if (N == 0)
3632 N = 1;
3633 for (unsigned I = 0; I != N; ++I)
3634 LE.write<IdentifierID>(
3635 Val: Writer.getIdentifierRef(II: Sel.getIdentifierInfoForSlot(argIndex: I)));
3636 }
3637
3638 void EmitData(raw_ostream& Out, key_type_ref,
3639 data_type_ref Methods, unsigned DataLen) {
3640 using namespace llvm::support;
3641
3642 endian::Writer LE(Out, llvm::endianness::little);
3643 uint64_t Start = Out.tell(); (void)Start;
3644 LE.write<uint32_t>(Val: Methods.ID);
3645 unsigned NumInstanceMethods = 0;
3646 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3647 Method = Method->getNext())
3648 if (ShouldWriteMethodListNode(Node: Method))
3649 ++NumInstanceMethods;
3650
3651 unsigned NumFactoryMethods = 0;
3652 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3653 Method = Method->getNext())
3654 if (ShouldWriteMethodListNode(Node: Method))
3655 ++NumFactoryMethods;
3656
3657 unsigned InstanceBits = Methods.Instance.getBits();
3658 assert(InstanceBits < 4);
3659 unsigned InstanceHasMoreThanOneDeclBit =
3660 Methods.Instance.hasMoreThanOneDecl();
3661 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3662 (InstanceHasMoreThanOneDeclBit << 2) |
3663 InstanceBits;
3664 unsigned FactoryBits = Methods.Factory.getBits();
3665 assert(FactoryBits < 4);
3666 unsigned FactoryHasMoreThanOneDeclBit =
3667 Methods.Factory.hasMoreThanOneDecl();
3668 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3669 (FactoryHasMoreThanOneDeclBit << 2) |
3670 FactoryBits;
3671 LE.write<uint16_t>(Val: FullInstanceBits);
3672 LE.write<uint16_t>(Val: FullFactoryBits);
3673 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3674 Method = Method->getNext())
3675 if (ShouldWriteMethodListNode(Node: Method))
3676 LE.write<DeclID>(Val: (DeclID)Writer.getDeclID(D: Method->getMethod()));
3677 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3678 Method = Method->getNext())
3679 if (ShouldWriteMethodListNode(Node: Method))
3680 LE.write<DeclID>(Val: (DeclID)Writer.getDeclID(D: Method->getMethod()));
3681
3682 assert(Out.tell() - Start == DataLen && "Data length is wrong");
3683 }
3684
3685private:
3686 static bool ShouldWriteMethodListNode(const ObjCMethodList *Node) {
3687 return (Node->getMethod() && !Node->getMethod()->isFromASTFile());
3688 }
3689};
3690
3691} // namespace
3692
3693/// Write ObjC data: selectors and the method pool.
3694///
3695/// The method pool contains both instance and factory methods, stored
3696/// in an on-disk hash table indexed by the selector. The hash table also
3697/// contains an empty entry for every other selector known to Sema.
3698void ASTWriter::WriteSelectors(Sema &SemaRef) {
3699 using namespace llvm;
3700
3701 // Do we have to do anything at all?
3702 if (SemaRef.ObjC().MethodPool.empty() && SelectorIDs.empty())
3703 return;
3704 unsigned NumTableEntries = 0;
3705 // Create and write out the blob that contains selectors and the method pool.
3706 {
3707 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3708 ASTMethodPoolTrait Trait(*this);
3709
3710 // Create the on-disk hash table representation. We walk through every
3711 // selector we've seen and look it up in the method pool.
3712 SelectorOffsets.resize(new_size: NextSelectorID - FirstSelectorID);
3713 for (auto &SelectorAndID : SelectorIDs) {
3714 Selector S = SelectorAndID.first;
3715 SelectorID ID = SelectorAndID.second;
3716 SemaObjC::GlobalMethodPool::iterator F =
3717 SemaRef.ObjC().MethodPool.find(Val: S);
3718 ASTMethodPoolTrait::data_type Data = {
3719 .ID: ID,
3720 .Instance: ObjCMethodList(),
3721 .Factory: ObjCMethodList()
3722 };
3723 if (F != SemaRef.ObjC().MethodPool.end()) {
3724 Data.Instance = F->second.first;
3725 Data.Factory = F->second.second;
3726 }
3727 // Only write this selector if it's not in an existing AST or something
3728 // changed.
3729 if (Chain && ID < FirstSelectorID) {
3730 // Selector already exists. Did it change?
3731 bool changed = false;
3732 for (ObjCMethodList *M = &Data.Instance; M && M->getMethod();
3733 M = M->getNext()) {
3734 if (!M->getMethod()->isFromASTFile()) {
3735 changed = true;
3736 Data.Instance = *M;
3737 break;
3738 }
3739 }
3740 for (ObjCMethodList *M = &Data.Factory; M && M->getMethod();
3741 M = M->getNext()) {
3742 if (!M->getMethod()->isFromASTFile()) {
3743 changed = true;
3744 Data.Factory = *M;
3745 break;
3746 }
3747 }
3748 if (!changed)
3749 continue;
3750 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3751 // A new method pool entry.
3752 ++NumTableEntries;
3753 }
3754 Generator.insert(Key: S, Data, InfoObj&: Trait);
3755 }
3756
3757 // Create the on-disk hash table in a buffer.
3758 SmallString<4096> MethodPool;
3759 uint32_t BucketOffset;
3760 {
3761 using namespace llvm::support;
3762
3763 ASTMethodPoolTrait Trait(*this);
3764 llvm::raw_svector_ostream Out(MethodPool);
3765 // Make sure that no bucket is at offset 0
3766 endian::write<uint32_t>(os&: Out, value: 0, endian: llvm::endianness::little);
3767 BucketOffset = Generator.Emit(Out, InfoObj&: Trait);
3768 }
3769
3770 // Create a blob abbreviation
3771 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3772 Abbrev->Add(OpInfo: BitCodeAbbrevOp(METHOD_POOL));
3773 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3774 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3775 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3776 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3777
3778 // Write the method pool
3779 {
3780 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3781 NumTableEntries};
3782 Stream.EmitRecordWithBlob(Abbrev: MethodPoolAbbrev, Vals: Record, Blob: MethodPool);
3783 }
3784
3785 // Create a blob abbreviation for the selector table offsets.
3786 Abbrev = std::make_shared<BitCodeAbbrev>();
3787 Abbrev->Add(OpInfo: BitCodeAbbrevOp(SELECTOR_OFFSETS));
3788 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3789 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3790 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3791 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
3792
3793 // Write the selector offsets table.
3794 {
3795 RecordData::value_type Record[] = {
3796 SELECTOR_OFFSETS, SelectorOffsets.size(),
3797 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3798 Stream.EmitRecordWithBlob(Abbrev: SelectorOffsetAbbrev, Vals: Record,
3799 Blob: bytes(v: SelectorOffsets));
3800 }
3801 }
3802}
3803
3804/// Write the selectors referenced in @selector expression into AST file.
3805void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3806 using namespace llvm;
3807
3808 if (SemaRef.ObjC().ReferencedSelectors.empty())
3809 return;
3810
3811 RecordData Record;
3812 ASTRecordWriter Writer(SemaRef.Context, *this, Record);
3813
3814 // Note: this writes out all references even for a dependent AST. But it is
3815 // very tricky to fix, and given that @selector shouldn't really appear in
3816 // headers, probably not worth it. It's not a correctness issue.
3817 for (auto &SelectorAndLocation : SemaRef.ObjC().ReferencedSelectors) {
3818 Selector Sel = SelectorAndLocation.first;
3819 SourceLocation Loc = SelectorAndLocation.second;
3820 Writer.AddSelectorRef(S: Sel);
3821 Writer.AddSourceLocation(Loc);
3822 }
3823 Writer.Emit(Code: REFERENCED_SELECTOR_POOL);
3824}
3825
3826//===----------------------------------------------------------------------===//
3827// Identifier Table Serialization
3828//===----------------------------------------------------------------------===//
3829
3830/// Determine the declaration that should be put into the name lookup table to
3831/// represent the given declaration in this module. This is usually D itself,
3832/// but if D was imported and merged into a local declaration, we want the most
3833/// recent local declaration instead. The chosen declaration will be the most
3834/// recent declaration in any module that imports this one.
3835static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3836 NamedDecl *D) {
3837 if (!LangOpts.Modules || !D->isFromASTFile())
3838 return D;
3839
3840 if (Decl *Redecl = D->getPreviousDecl()) {
3841 // For Redeclarable decls, a prior declaration might be local.
3842 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3843 // If we find a local decl, we're done.
3844 if (!Redecl->isFromASTFile()) {
3845 // Exception: in very rare cases (for injected-class-names), not all
3846 // redeclarations are in the same semantic context. Skip ones in a
3847 // different context. They don't go in this lookup table at all.
3848 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3849 DC: D->getDeclContext()->getRedeclContext()))
3850 continue;
3851 return cast<NamedDecl>(Val: Redecl);
3852 }
3853
3854 // If we find a decl from a (chained-)PCH stop since we won't find a
3855 // local one.
3856 if (Redecl->getOwningModuleID() == 0)
3857 break;
3858 }
3859 } else if (Decl *First = D->getCanonicalDecl()) {
3860 // For Mergeable decls, the first decl might be local.
3861 if (!First->isFromASTFile())
3862 return cast<NamedDecl>(Val: First);
3863 }
3864
3865 // All declarations are imported. Our most recent declaration will also be
3866 // the most recent one in anyone who imports us.
3867 return D;
3868}
3869
3870namespace {
3871
3872bool IsInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset,
3873 bool IsModule, bool IsCPlusPlus) {
3874 bool NeedDecls = !IsModule || !IsCPlusPlus;
3875
3876 bool IsInteresting =
3877 II->getNotableIdentifierID() != tok::NotableIdentifierKind::not_notable ||
3878 II->getBuiltinID() != Builtin::ID::NotBuiltin ||
3879 II->getObjCKeywordID() != tok::ObjCKeywordKind::objc_not_keyword;
3880 if (MacroOffset ||
3881 (II->hasMacroDefinition() &&
3882 II->hasFETokenInfoChangedSinceDeserialization()) ||
3883 II->isPoisoned() || (!IsModule && IsInteresting) ||
3884 II->hasRevertedTokenIDToIdentifier() ||
3885 (NeedDecls && II->getFETokenInfo()))
3886 return true;
3887
3888 return false;
3889}
3890
3891bool IsInterestingNonMacroIdentifier(const IdentifierInfo *II,
3892 ASTWriter &Writer) {
3893 bool IsModule = Writer.isWritingModule();
3894 bool IsCPlusPlus = Writer.getLangOpts().CPlusPlus;
3895 return IsInterestingIdentifier(II, /*MacroOffset=*/0, IsModule, IsCPlusPlus);
3896}
3897
3898class ASTIdentifierTableTrait {
3899 ASTWriter &Writer;
3900 Preprocessor &PP;
3901 IdentifierResolver *IdResolver;
3902 bool IsModule;
3903 bool NeedDecls;
3904 ASTWriter::RecordData *InterestingIdentifierOffsets;
3905
3906 /// Determines whether this is an "interesting" identifier that needs a
3907 /// full IdentifierInfo structure written into the hash table. Notably, this
3908 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3909 /// to check that.
3910 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3911 return IsInterestingIdentifier(II, MacroOffset, IsModule,
3912 IsCPlusPlus: Writer.getLangOpts().CPlusPlus);
3913 }
3914
3915public:
3916 using key_type = const IdentifierInfo *;
3917 using key_type_ref = key_type;
3918
3919 using data_type = IdentifierID;
3920 using data_type_ref = data_type;
3921
3922 using hash_value_type = unsigned;
3923 using offset_type = unsigned;
3924
3925 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3926 IdentifierResolver *IdResolver, bool IsModule,
3927 ASTWriter::RecordData *InterestingIdentifierOffsets)
3928 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3929 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3930 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3931
3932 bool needDecls() const { return NeedDecls; }
3933
3934 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3935 return llvm::djbHash(Buffer: II->getName());
3936 }
3937
3938 bool isInterestingIdentifier(const IdentifierInfo *II) {
3939 auto MacroOffset = Writer.getMacroDirectivesOffset(Name: II);
3940 return isInterestingIdentifier(II, MacroOffset);
3941 }
3942
3943 std::pair<unsigned, unsigned>
3944 EmitKeyDataLength(raw_ostream &Out, const IdentifierInfo *II, IdentifierID ID) {
3945 // Record the location of the identifier data. This is used when generating
3946 // the mapping from persistent IDs to strings.
3947 Writer.SetIdentifierOffset(II, Offset: Out.tell());
3948
3949 auto MacroOffset = Writer.getMacroDirectivesOffset(Name: II);
3950
3951 // Emit the offset of the key/data length information to the interesting
3952 // identifiers table if necessary.
3953 if (InterestingIdentifierOffsets &&
3954 isInterestingIdentifier(II, MacroOffset))
3955 InterestingIdentifierOffsets->push_back(Elt: Out.tell());
3956
3957 unsigned KeyLen = II->getLength() + 1;
3958 unsigned DataLen = sizeof(IdentifierID); // bytes for the persistent ID << 1
3959 if (isInterestingIdentifier(II, MacroOffset)) {
3960 DataLen += 2; // 2 bytes for builtin ID
3961 DataLen += 2; // 2 bytes for flags
3962 if (MacroOffset || (II->hasMacroDefinition() &&
3963 II->hasFETokenInfoChangedSinceDeserialization()))
3964 DataLen += 4; // MacroDirectives offset.
3965
3966 if (NeedDecls && IdResolver)
3967 DataLen += std::distance(first: IdResolver->begin(Name: II), last: IdResolver->end()) *
3968 sizeof(DeclID);
3969 }
3970 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3971 }
3972
3973 void EmitKey(raw_ostream &Out, const IdentifierInfo *II, unsigned KeyLen) {
3974 Out.write(Ptr: II->getNameStart(), Size: KeyLen);
3975 }
3976
3977 void EmitData(raw_ostream &Out, const IdentifierInfo *II, IdentifierID ID,
3978 unsigned) {
3979 using namespace llvm::support;
3980
3981 endian::Writer LE(Out, llvm::endianness::little);
3982
3983 auto MacroOffset = Writer.getMacroDirectivesOffset(Name: II);
3984 if (!isInterestingIdentifier(II, MacroOffset)) {
3985 LE.write<IdentifierID>(Val: ID << 1);
3986 return;
3987 }
3988
3989 LE.write<IdentifierID>(Val: (ID << 1) | 0x01);
3990 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3991 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.");
3992 LE.write<uint16_t>(Val: Bits);
3993 Bits = 0;
3994 bool HasMacroDefinition =
3995 (MacroOffset != 0) || (II->hasMacroDefinition() &&
3996 II->hasFETokenInfoChangedSinceDeserialization());
3997 Bits = (Bits << 1) | unsigned(HasMacroDefinition);
3998 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3999 Bits = (Bits << 1) | unsigned(II->isPoisoned());
4000 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
4001 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
4002 LE.write<uint16_t>(Val: Bits);
4003
4004 if (HasMacroDefinition)
4005 LE.write<uint32_t>(Val: MacroOffset);
4006
4007 if (NeedDecls && IdResolver) {
4008 // Emit the declaration IDs in reverse order, because the
4009 // IdentifierResolver provides the declarations as they would be
4010 // visible (e.g., the function "stat" would come before the struct
4011 // "stat"), but the ASTReader adds declarations to the end of the list
4012 // (so we need to see the struct "stat" before the function "stat").
4013 // Only emit declarations that aren't from a chained PCH, though.
4014 SmallVector<NamedDecl *, 16> Decls(IdResolver->decls(Name: II));
4015 for (NamedDecl *D : llvm::reverse(C&: Decls))
4016 LE.write<DeclID>(Val: (DeclID)Writer.getDeclID(
4017 D: getDeclForLocalLookup(LangOpts: PP.getLangOpts(), D)));
4018 }
4019 }
4020};
4021
4022} // namespace
4023
4024/// If the \param IdentifierID ID is a local Identifier ID. If the higher
4025/// bits of ID is 0, it implies that the ID doesn't come from AST files.
4026static bool isLocalIdentifierID(IdentifierID ID) { return !(ID >> 32); }
4027
4028/// Write the identifier table into the AST file.
4029///
4030/// The identifier table consists of a blob containing string data
4031/// (the actual identifiers themselves) and a separate "offsets" index
4032/// that maps identifier IDs to locations within the blob.
4033void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
4034 IdentifierResolver *IdResolver,
4035 bool IsModule) {
4036 using namespace llvm;
4037
4038 RecordData InterestingIdents;
4039
4040 // Create and write out the blob that contains the identifier
4041 // strings.
4042 {
4043 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
4044 ASTIdentifierTableTrait Trait(*this, PP, IdResolver, IsModule,
4045 IsModule ? &InterestingIdents : nullptr);
4046
4047 // Create the on-disk hash table representation. We only store offsets
4048 // for identifiers that appear here for the first time.
4049 IdentifierOffsets.resize(new_size: NextIdentID - FirstIdentID);
4050 for (auto IdentIDPair : IdentifierIDs) {
4051 const IdentifierInfo *II = IdentIDPair.first;
4052 IdentifierID ID = IdentIDPair.second;
4053 assert(II && "NULL identifier in identifier table");
4054
4055 // Write out identifiers if either the ID is local or the identifier has
4056 // changed since it was loaded.
4057 if (isLocalIdentifierID(ID) || II->hasChangedSinceDeserialization() ||
4058 (Trait.needDecls() &&
4059 II->hasFETokenInfoChangedSinceDeserialization()))
4060 Generator.insert(Key: II, Data: ID, InfoObj&: Trait);
4061 }
4062
4063 // Create the on-disk hash table in a buffer.
4064 SmallString<4096> IdentifierTable;
4065 uint32_t BucketOffset;
4066 {
4067 using namespace llvm::support;
4068
4069 llvm::raw_svector_ostream Out(IdentifierTable);
4070 // Make sure that no bucket is at offset 0
4071 endian::write<uint32_t>(os&: Out, value: 0, endian: llvm::endianness::little);
4072 BucketOffset = Generator.Emit(Out, InfoObj&: Trait);
4073 }
4074
4075 // Create a blob abbreviation
4076 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4077 Abbrev->Add(OpInfo: BitCodeAbbrevOp(IDENTIFIER_TABLE));
4078 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
4079 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4080 unsigned IDTableAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
4081
4082 // Write the identifier table
4083 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
4084 Stream.EmitRecordWithBlob(Abbrev: IDTableAbbrev, Vals: Record, Blob: IdentifierTable);
4085 }
4086
4087 // Write the offsets table for identifier IDs.
4088 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4089 Abbrev->Add(OpInfo: BitCodeAbbrevOp(IDENTIFIER_OFFSET));
4090 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
4091 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4092 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
4093
4094#ifndef NDEBUG
4095 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
4096 assert(IdentifierOffsets[I] && "Missing identifier offset?");
4097#endif
4098
4099 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
4100 IdentifierOffsets.size()};
4101 Stream.EmitRecordWithBlob(Abbrev: IdentifierOffsetAbbrev, Vals: Record,
4102 Blob: bytes(v: IdentifierOffsets));
4103
4104 // In C++, write the list of interesting identifiers (those that are
4105 // defined as macros, poisoned, or similar unusual things).
4106 if (!InterestingIdents.empty())
4107 Stream.EmitRecord(Code: INTERESTING_IDENTIFIERS, Vals: InterestingIdents);
4108}
4109
4110void ASTWriter::handleVTable(CXXRecordDecl *RD) {
4111 if (!RD->isInNamedModule())
4112 return;
4113
4114 PendingEmittingVTables.push_back(Elt: RD);
4115}
4116
4117void ASTWriter::addTouchedModuleFile(serialization::ModuleFile *MF) {
4118 TouchedModuleFiles.insert(X: MF);
4119}
4120
4121//===----------------------------------------------------------------------===//
4122// DeclContext's Name Lookup Table Serialization
4123//===----------------------------------------------------------------------===//
4124
4125namespace {
4126
4127class ASTDeclContextNameLookupTraitBase {
4128protected:
4129 ASTWriter &Writer;
4130 using DeclIDsTy = llvm::SmallVector<LocalDeclID, 64>;
4131 DeclIDsTy DeclIDs;
4132
4133public:
4134 /// A start and end index into DeclIDs, representing a sequence of decls.
4135 using data_type = std::pair<unsigned, unsigned>;
4136 using data_type_ref = const data_type &;
4137
4138 using hash_value_type = unsigned;
4139 using offset_type = unsigned;
4140
4141 explicit ASTDeclContextNameLookupTraitBase(ASTWriter &Writer)
4142 : Writer(Writer) {}
4143
4144 data_type getData(const DeclIDsTy &LocalIDs) {
4145 unsigned Start = DeclIDs.size();
4146 for (auto ID : LocalIDs)
4147 DeclIDs.push_back(Elt: ID);
4148 return std::make_pair(x&: Start, y: DeclIDs.size());
4149 }
4150
4151 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
4152 unsigned Start = DeclIDs.size();
4153 DeclIDs.insert(
4154 I: DeclIDs.end(),
4155 From: DeclIDIterator<GlobalDeclID, LocalDeclID>(FromReader.begin()),
4156 To: DeclIDIterator<GlobalDeclID, LocalDeclID>(FromReader.end()));
4157 return std::make_pair(x&: Start, y: DeclIDs.size());
4158 }
4159
4160 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
4161 assert(Writer.hasChain() &&
4162 "have reference to loaded module file but no chain?");
4163
4164 using namespace llvm::support;
4165 Writer.addTouchedModuleFile(MF: F);
4166 endian::write<uint32_t>(os&: Out, value: Writer.getChain()->getModuleFileID(M: F),
4167 endian: llvm::endianness::little);
4168 }
4169
4170 std::pair<unsigned, unsigned> EmitKeyDataLengthBase(raw_ostream &Out,
4171 DeclarationNameKey Name,
4172 data_type_ref Lookup) {
4173 unsigned KeyLen = 1;
4174 switch (Name.getKind()) {
4175 case DeclarationName::Identifier:
4176 case DeclarationName::CXXLiteralOperatorName:
4177 case DeclarationName::CXXDeductionGuideName:
4178 KeyLen += sizeof(IdentifierID);
4179 break;
4180 case DeclarationName::ObjCZeroArgSelector:
4181 case DeclarationName::ObjCOneArgSelector:
4182 case DeclarationName::ObjCMultiArgSelector:
4183 KeyLen += 4;
4184 break;
4185 case DeclarationName::CXXOperatorName:
4186 KeyLen += 1;
4187 break;
4188 case DeclarationName::CXXConstructorName:
4189 case DeclarationName::CXXDestructorName:
4190 case DeclarationName::CXXConversionFunctionName:
4191 case DeclarationName::CXXUsingDirective:
4192 break;
4193 }
4194
4195 // length of DeclIDs.
4196 unsigned DataLen = sizeof(DeclID) * (Lookup.second - Lookup.first);
4197
4198 return {KeyLen, DataLen};
4199 }
4200
4201 void EmitKeyBase(raw_ostream &Out, DeclarationNameKey Name) {
4202 using namespace llvm::support;
4203
4204 endian::Writer LE(Out, llvm::endianness::little);
4205 LE.write<uint8_t>(Val: Name.getKind());
4206 switch (Name.getKind()) {
4207 case DeclarationName::Identifier:
4208 case DeclarationName::CXXLiteralOperatorName:
4209 case DeclarationName::CXXDeductionGuideName:
4210 LE.write<IdentifierID>(Val: Writer.getIdentifierRef(II: Name.getIdentifier()));
4211 return;
4212 case DeclarationName::ObjCZeroArgSelector:
4213 case DeclarationName::ObjCOneArgSelector:
4214 case DeclarationName::ObjCMultiArgSelector:
4215 LE.write<uint32_t>(Val: Writer.getSelectorRef(Sel: Name.getSelector()));
4216 return;
4217 case DeclarationName::CXXOperatorName:
4218 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
4219 "Invalid operator?");
4220 LE.write<uint8_t>(Val: Name.getOperatorKind());
4221 return;
4222 case DeclarationName::CXXConstructorName:
4223 case DeclarationName::CXXDestructorName:
4224 case DeclarationName::CXXConversionFunctionName:
4225 case DeclarationName::CXXUsingDirective:
4226 return;
4227 }
4228
4229 llvm_unreachable("Invalid name kind?");
4230 }
4231
4232 void EmitDataBase(raw_ostream &Out, data_type Lookup, unsigned DataLen) {
4233 using namespace llvm::support;
4234
4235 endian::Writer LE(Out, llvm::endianness::little);
4236 uint64_t Start = Out.tell(); (void)Start;
4237 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
4238 LE.write<DeclID>(Val: (DeclID)DeclIDs[I]);
4239 assert(Out.tell() - Start == DataLen && "Data length is wrong");
4240 }
4241};
4242
4243class ModuleLevelNameLookupTrait : public ASTDeclContextNameLookupTraitBase {
4244public:
4245 using primary_module_hash_type = unsigned;
4246
4247 using key_type = std::pair<DeclarationNameKey, primary_module_hash_type>;
4248 using key_type_ref = key_type;
4249
4250 explicit ModuleLevelNameLookupTrait(ASTWriter &Writer)
4251 : ASTDeclContextNameLookupTraitBase(Writer) {}
4252
4253 static bool EqualKey(key_type_ref a, key_type_ref b) { return a == b; }
4254
4255 hash_value_type ComputeHash(key_type Key) {
4256 llvm::FoldingSetNodeID ID;
4257 ID.AddInteger(I: Key.first.getHash());
4258 ID.AddInteger(I: Key.second);
4259 return ID.computeStableHash();
4260 }
4261
4262 std::pair<unsigned, unsigned>
4263 EmitKeyDataLength(raw_ostream &Out, key_type Key, data_type_ref Lookup) {
4264 auto [KeyLen, DataLen] = EmitKeyDataLengthBase(Out, Name: Key.first, Lookup);
4265 KeyLen += sizeof(Key.second);
4266 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
4267 }
4268
4269 void EmitKey(raw_ostream &Out, key_type Key, unsigned) {
4270 EmitKeyBase(Out, Name: Key.first);
4271 llvm::support::endian::Writer LE(Out, llvm::endianness::little);
4272 LE.write<primary_module_hash_type>(Val: Key.second);
4273 }
4274
4275 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
4276 unsigned DataLen) {
4277 EmitDataBase(Out, Lookup, DataLen);
4278 }
4279};
4280
4281class ASTDeclContextNameTrivialLookupTrait
4282 : public ASTDeclContextNameLookupTraitBase {
4283public:
4284 using key_type = DeclarationNameKey;
4285 using key_type_ref = key_type;
4286
4287public:
4288 using ASTDeclContextNameLookupTraitBase::ASTDeclContextNameLookupTraitBase;
4289
4290 using ASTDeclContextNameLookupTraitBase::getData;
4291
4292 static bool EqualKey(key_type_ref a, key_type_ref b) { return a == b; }
4293
4294 hash_value_type ComputeHash(key_type Name) { return Name.getHash(); }
4295
4296 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
4297 DeclarationNameKey Name,
4298 data_type_ref Lookup) {
4299 auto [KeyLen, DataLen] = EmitKeyDataLengthBase(Out, Name, Lookup);
4300 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
4301 }
4302
4303 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
4304 return EmitKeyBase(Out, Name);
4305 }
4306
4307 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
4308 unsigned DataLen) {
4309 EmitDataBase(Out, Lookup, DataLen);
4310 }
4311};
4312
4313static bool isModuleLocalDecl(NamedDecl *D) {
4314 // For decls not in a file context, they should have the same visibility
4315 // with their parent.
4316 if (auto *Parent = dyn_cast<NamedDecl>(Val: D->getNonTransparentDeclContext());
4317 Parent && !D->getNonTransparentDeclContext()->isFileContext())
4318 return isModuleLocalDecl(D: Parent);
4319
4320 // Deduction guides are not found by name lookup. Keep them in the general
4321 // lookup table so that Sema can consider all reachable deduction guides,
4322 // including when instantiating an exported template that uses a
4323 // non-exported class template.
4324 if (isa<CXXDeductionGuideDecl>(Val: D))
4325 return false;
4326
4327 if (auto *FTD = dyn_cast<FunctionTemplateDecl>(Val: D))
4328 if (isa<CXXDeductionGuideDecl>(Val: FTD->getTemplatedDecl()))
4329 return false;
4330
4331 if (D->getFormalLinkage() != Linkage::Module)
4332 return false;
4333
4334 // It is hard for the serializer to judge if the in-class friend declaration
4335 // is visible or not, so we just transfer the task to Sema. It should be a
4336 // safe decision since Sema is able to handle the lookup rules for in-class
4337 // friend declarations good enough already.
4338 if (D->getFriendObjectKind() &&
4339 isa<CXXRecordDecl>(Val: D->getLexicalDeclContext()))
4340 return false;
4341
4342 return true;
4343}
4344
4345static bool isTULocalInNamedModules(NamedDecl *D) {
4346 Module *NamedModule = D->getTopLevelOwningNamedModule();
4347 if (!NamedModule)
4348 return false;
4349
4350 // For none-top level decls, we choose to move it to the general visible
4351 // lookup table. Since the consumer may get its parent somehow and performs
4352 // a lookup in it (considering looking up the operator function in lambda).
4353 // The difference between module local lookup table and TU local lookup table
4354 // is, the consumers still have a chance to lookup in the module local lookup
4355 // table but **now** the consumers won't read the TU local lookup table if
4356 // the consumer is not the original TU.
4357 //
4358 // FIXME: It seems to be an optimization chance (and also a more correct
4359 // semantics) to remain the TULocal lookup table and performing similar lookup
4360 // with the module local lookup table except that we only allow the lookups
4361 // with the same module unit.
4362 if (!D->getNonTransparentDeclContext()->isFileContext())
4363 return false;
4364
4365 return D->getLinkageInternal() == Linkage::Internal;
4366}
4367
4368class ASTDeclContextNameLookupTrait
4369 : public ASTDeclContextNameTrivialLookupTrait {
4370public:
4371 using TULocalDeclsMapTy = llvm::DenseMap<key_type, DeclIDsTy>;
4372
4373 using ModuleLevelDeclsMapTy =
4374 llvm::DenseMap<ModuleLevelNameLookupTrait::key_type, DeclIDsTy>;
4375
4376private:
4377 enum class LookupVisibility {
4378 GenerallyVisibile,
4379 // The decls can only be found by other TU in the same module.
4380 // Note a clang::Module models a module unit instead of logical module
4381 // in C++20.
4382 ModuleLocalVisible,
4383 // The decls can only be found by the TU itself that defines it.
4384 TULocal,
4385 };
4386
4387 LookupVisibility getLookupVisibility(NamedDecl *D) const {
4388 // Only named modules have other lookup visibility.
4389 if (!Writer.isWritingStdCXXNamedModules())
4390 return LookupVisibility::GenerallyVisibile;
4391
4392 if (isModuleLocalDecl(D))
4393 return LookupVisibility::ModuleLocalVisible;
4394 if (isTULocalInNamedModules(D))
4395 return LookupVisibility::TULocal;
4396
4397 // A trick to handle enum constants. The enum constants is special since
4398 // they can be found directly without their parent context. This makes it
4399 // tricky to decide if an EnumConstantDecl is visible or not by their own
4400 // visibilities. E.g., for a class member, we can assume it is visible if
4401 // the user get its parent somehow. But for an enum constant, the users may
4402 // access if without its parent context. Although we can fix the problem in
4403 // Sema lookup process, it might be too complex, we just make a trick here.
4404 // Note that we only removes enum constant from the lookup table from its
4405 // parent of parent. We DON'T remove the enum constant from its parent. So
4406 // we don't need to care about merging problems here.
4407 if (auto *ECD = dyn_cast<EnumConstantDecl>(Val: D);
4408 ECD && DC.isFileContext() && ECD->getTopLevelOwningNamedModule()) {
4409 if (llvm::all_of(
4410 Range: DC.noload_lookup(
4411 Name: cast<EnumDecl>(Val: ECD->getDeclContext())->getDeclName()),
4412 P: [](auto *Found) {
4413 return Found->isInvisibleOutsideTheOwningModule();
4414 }))
4415 return ECD->isFromExplicitGlobalModule() ||
4416 ECD->isInAnonymousNamespace()
4417 ? LookupVisibility::TULocal
4418 : LookupVisibility::ModuleLocalVisible;
4419 }
4420
4421 return LookupVisibility::GenerallyVisibile;
4422 }
4423
4424 DeclContext &DC;
4425 ModuleLevelDeclsMapTy ModuleLocalDeclsMap;
4426 TULocalDeclsMapTy TULocalDeclsMap;
4427
4428public:
4429 using ASTDeclContextNameTrivialLookupTrait::
4430 ASTDeclContextNameTrivialLookupTrait;
4431
4432 ASTDeclContextNameLookupTrait(ASTWriter &Writer, DeclContext &DC)
4433 : ASTDeclContextNameTrivialLookupTrait(Writer), DC(DC) {}
4434
4435 template <typename Coll> data_type getData(const Coll &Decls) {
4436 unsigned Start = DeclIDs.size();
4437 auto AddDecl = [this](NamedDecl *D) {
4438 NamedDecl *DeclForLocalLookup =
4439 getDeclForLocalLookup(LangOpts: Writer.getLangOpts(), D);
4440
4441 if (Writer.getDoneWritingDeclsAndTypes() &&
4442 !Writer.wasDeclEmitted(D: DeclForLocalLookup))
4443 return;
4444
4445 // Try to avoid writing internal decls to reduced BMI.
4446 // See comments in ASTWriter::WriteDeclContextLexicalBlock for details.
4447 if (Writer.isGeneratingReducedBMI() &&
4448 !DeclForLocalLookup->isFromExplicitGlobalModule() &&
4449 IsInternalDeclFromFileContext(D: DeclForLocalLookup))
4450 return;
4451
4452 auto ID = Writer.GetDeclRef(D: DeclForLocalLookup);
4453
4454 switch (getLookupVisibility(D: DeclForLocalLookup)) {
4455 case LookupVisibility::ModuleLocalVisible:
4456 if (UnsignedOrNone PrimaryModuleHash =
4457 getPrimaryModuleHash(M: D->getOwningModule())) {
4458 auto Key = std::make_pair(x: D->getDeclName(), y: *PrimaryModuleHash);
4459 auto Iter = ModuleLocalDeclsMap.find(Val: Key);
4460 if (Iter == ModuleLocalDeclsMap.end())
4461 ModuleLocalDeclsMap.insert(KV: {Key, DeclIDsTy{ID}});
4462 else
4463 Iter->second.push_back(Elt: ID);
4464 return;
4465 }
4466 break;
4467 case LookupVisibility::TULocal: {
4468 auto Iter = TULocalDeclsMap.find(Val: D->getDeclName());
4469 if (Iter == TULocalDeclsMap.end())
4470 TULocalDeclsMap.insert(KV: {D->getDeclName(), DeclIDsTy{ID}});
4471 else
4472 Iter->second.push_back(Elt: ID);
4473 return;
4474 }
4475 case LookupVisibility::GenerallyVisibile:
4476 // Generally visible decls go into the general lookup table.
4477 break;
4478 }
4479
4480 DeclIDs.push_back(Elt: ID);
4481 };
4482 ASTReader *Chain = Writer.getChain();
4483 for (NamedDecl *D : Decls) {
4484 if (Chain && isa<NamespaceDecl>(Val: D) && D->isFromASTFile() &&
4485 D == Chain->getKeyDeclaration(D)) {
4486 // In ASTReader, we stored only the key declaration of a namespace decl
4487 // for this TU. If we have an external namespace decl, this is that
4488 // key declaration and we need to re-expand it to write out the first
4489 // decl from each module.
4490 //
4491 // See comment 'ASTReader::FindExternalVisibleDeclsByName' for details.
4492 auto Firsts =
4493 Writer.CollectFirstDeclFromEachModule(D, /*IncludeLocal=*/false);
4494 for (const auto &[_, First] : Firsts)
4495 AddDecl(cast<NamedDecl>(Val: const_cast<Decl *>(First)));
4496 } else {
4497 AddDecl(D);
4498 }
4499 }
4500 return std::make_pair(x&: Start, y: DeclIDs.size());
4501 }
4502
4503 const ModuleLevelDeclsMapTy &getModuleLocalDecls() {
4504 return ModuleLocalDeclsMap;
4505 }
4506
4507 const TULocalDeclsMapTy &getTULocalDecls() { return TULocalDeclsMap; }
4508};
4509
4510} // namespace
4511
4512namespace {
4513class LazySpecializationInfoLookupTrait {
4514 ASTWriter &Writer;
4515 llvm::SmallVector<serialization::reader::LazySpecializationInfo, 64> Specs;
4516
4517public:
4518 using key_type = unsigned;
4519 using key_type_ref = key_type;
4520
4521 /// A start and end index into Specs, representing a sequence of decls.
4522 using data_type = std::pair<unsigned, unsigned>;
4523 using data_type_ref = const data_type &;
4524
4525 using hash_value_type = unsigned;
4526 using offset_type = unsigned;
4527
4528 explicit LazySpecializationInfoLookupTrait(ASTWriter &Writer)
4529 : Writer(Writer) {}
4530
4531 template <typename Col, typename Col2>
4532 data_type getData(Col &&C, Col2 &ExistingInfo) {
4533 unsigned Start = Specs.size();
4534 for (auto *D : C) {
4535 NamedDecl *ND = getDeclForLocalLookup(LangOpts: Writer.getLangOpts(),
4536 D: const_cast<NamedDecl *>(D));
4537 Specs.push_back(Elt: GlobalDeclID(Writer.GetDeclRef(D: ND).getRawValue()));
4538 }
4539 for (const serialization::reader::LazySpecializationInfo &Info :
4540 ExistingInfo)
4541 Specs.push_back(Elt: Info);
4542 return std::make_pair(x&: Start, y: Specs.size());
4543 }
4544
4545 data_type ImportData(
4546 const reader::LazySpecializationInfoLookupTrait::data_type &FromReader) {
4547 unsigned Start = Specs.size();
4548 for (auto ID : FromReader)
4549 Specs.push_back(Elt: ID);
4550 return std::make_pair(x&: Start, y: Specs.size());
4551 }
4552
4553 static bool EqualKey(key_type_ref a, key_type_ref b) { return a == b; }
4554
4555 hash_value_type ComputeHash(key_type Name) { return Name; }
4556
4557 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
4558 assert(Writer.hasChain() &&
4559 "have reference to loaded module file but no chain?");
4560
4561 using namespace llvm::support;
4562 Writer.addTouchedModuleFile(MF: F);
4563 endian::write<uint32_t>(os&: Out, value: Writer.getChain()->getModuleFileID(M: F),
4564 endian: llvm::endianness::little);
4565 }
4566
4567 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
4568 key_type HashValue,
4569 data_type_ref Lookup) {
4570 // 4 bytes for each slot.
4571 unsigned KeyLen = 4;
4572 unsigned DataLen = sizeof(serialization::reader::LazySpecializationInfo) *
4573 (Lookup.second - Lookup.first);
4574
4575 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
4576 }
4577
4578 void EmitKey(raw_ostream &Out, key_type HashValue, unsigned) {
4579 using namespace llvm::support;
4580
4581 endian::Writer LE(Out, llvm::endianness::little);
4582 LE.write<uint32_t>(Val: HashValue);
4583 }
4584
4585 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
4586 unsigned DataLen) {
4587 using namespace llvm::support;
4588
4589 endian::Writer LE(Out, llvm::endianness::little);
4590 uint64_t Start = Out.tell();
4591 (void)Start;
4592 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I) {
4593 LE.write<DeclID>(Val: Specs[I].getRawValue());
4594 }
4595 assert(Out.tell() - Start == DataLen && "Data length is wrong");
4596 }
4597};
4598
4599unsigned CalculateODRHashForSpecs(const Decl *Spec) {
4600 ArrayRef<TemplateArgument> Args;
4601 if (auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(Val: Spec))
4602 Args = CTSD->getTemplateArgs().asArray();
4603 else if (auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(Val: Spec))
4604 Args = VTSD->getTemplateArgs().asArray();
4605 else if (auto *FD = dyn_cast<FunctionDecl>(Val: Spec))
4606 Args = FD->getTemplateSpecializationArgs()->asArray();
4607 else
4608 llvm_unreachable("New Specialization Kind?");
4609
4610 return StableHashForTemplateArguments(Args);
4611}
4612} // namespace
4613
4614void ASTWriter::GenerateSpecializationInfoLookupTable(
4615 const NamedDecl *D, llvm::SmallVectorImpl<const Decl *> &Specializations,
4616 llvm::SmallVectorImpl<char> &LookupTable, bool IsPartial) {
4617 assert(D->isFirstDecl());
4618
4619 // Create the on-disk hash table representation.
4620 MultiOnDiskHashTableGenerator<reader::LazySpecializationInfoLookupTrait,
4621 LazySpecializationInfoLookupTrait>
4622 Generator;
4623 LazySpecializationInfoLookupTrait Trait(*this);
4624
4625 llvm::MapVector<unsigned, llvm::SmallVector<const NamedDecl *, 4>>
4626 SpecializationMaps;
4627
4628 for (auto *Specialization : Specializations) {
4629 unsigned HashedValue = CalculateODRHashForSpecs(Spec: Specialization);
4630
4631 auto Iter = SpecializationMaps.find(Key: HashedValue);
4632 if (Iter == SpecializationMaps.end())
4633 Iter = SpecializationMaps
4634 .try_emplace(Key: HashedValue,
4635 Args: llvm::SmallVector<const NamedDecl *, 4>())
4636 .first;
4637
4638 Iter->second.push_back(Elt: cast<NamedDecl>(Val: Specialization));
4639 }
4640
4641 auto *Lookups =
4642 Chain ? Chain->getLoadedSpecializationsLookupTables(D, IsPartial)
4643 : nullptr;
4644
4645 for (auto &[HashValue, Specs] : SpecializationMaps) {
4646 SmallVector<serialization::reader::LazySpecializationInfo, 16>
4647 ExisitingSpecs;
4648 // We have to merge the lookup table manually here. We can't depend on the
4649 // merge mechanism offered by
4650 // clang::serialization::MultiOnDiskHashTableGenerator since that generator
4651 // assumes the we'll get the same value with the same key.
4652 // And also underlying llvm::OnDiskChainedHashTableGenerator assumes that we
4653 // won't insert the values with the same key twice. So we have to merge the
4654 // lookup table here manually.
4655 if (Lookups)
4656 ExisitingSpecs = Lookups->Table.find(EKey: HashValue);
4657
4658 Generator.insert(Key: HashValue, Data: Trait.getData(C&: Specs, ExistingInfo&: ExisitingSpecs), Info&: Trait);
4659 }
4660
4661 // Reduced BMI may not emit everything in the lookup table,
4662 // If Reduced BMI **partially** emits some decls,
4663 // then the generator may not emit the corresponding entry for the
4664 // corresponding name is already there. See
4665 // MultiOnDiskHashTableGenerator::insert and
4666 // MultiOnDiskHashTableGenerator::emit for details.
4667 // So we won't emit the lookup table if we're generating reduced BMI.
4668 auto *ToEmitMaybeMergedLookupTable =
4669 (!isGeneratingReducedBMI() && Lookups) ? &Lookups->Table : nullptr;
4670 Generator.emit(Out&: LookupTable, Info&: Trait, Base: ToEmitMaybeMergedLookupTable);
4671}
4672
4673uint64_t ASTWriter::WriteSpecializationInfoLookupTable(
4674 const NamedDecl *D, llvm::SmallVectorImpl<const Decl *> &Specializations,
4675 bool IsPartial) {
4676
4677 llvm::SmallString<4096> LookupTable;
4678 GenerateSpecializationInfoLookupTable(D, Specializations, LookupTable,
4679 IsPartial);
4680
4681 uint64_t Offset = Stream.GetCurrentBitNo();
4682 RecordData::value_type Record[] = {static_cast<RecordData::value_type>(
4683 IsPartial ? DECL_PARTIAL_SPECIALIZATIONS : DECL_SPECIALIZATIONS)};
4684 Stream.EmitRecordWithBlob(Abbrev: IsPartial ? DeclPartialSpecializationsAbbrev
4685 : DeclSpecializationsAbbrev,
4686 Vals: Record, Blob: LookupTable);
4687
4688 return Offset;
4689}
4690
4691/// Returns true if all of the lookup result are either external, not emitted or
4692/// predefined. In such cases, the lookup result is not interesting and we don't
4693/// need to record the result in the current being written module. Return false
4694/// otherwise.
4695static bool isLookupResultNotInteresting(ASTWriter &Writer,
4696 StoredDeclsList &Result) {
4697 for (auto *D : Result.getLookupResult()) {
4698 auto *LocalD = getDeclForLocalLookup(LangOpts: Writer.getLangOpts(), D);
4699 if (LocalD->isFromASTFile())
4700 continue;
4701
4702 // We can only be sure whether the local declaration is reachable
4703 // after we done writing the declarations and types.
4704 if (Writer.getDoneWritingDeclsAndTypes() && !Writer.wasDeclEmitted(D: LocalD))
4705 continue;
4706
4707 // We don't need to emit the predefined decls.
4708 if (Writer.isDeclPredefined(D: LocalD))
4709 continue;
4710
4711 return false;
4712 }
4713
4714 return true;
4715}
4716
4717void ASTWriter::GenerateNameLookupTable(
4718 ASTContext &Context, const DeclContext *ConstDC,
4719 llvm::SmallVectorImpl<char> &LookupTable,
4720 llvm::SmallVectorImpl<char> &ModuleLocalLookupTable,
4721 llvm::SmallVectorImpl<char> &TULookupTable) {
4722 assert(!ConstDC->hasLazyLocalLexicalLookups() &&
4723 !ConstDC->hasLazyExternalLexicalLookups() &&
4724 "must call buildLookups first");
4725
4726 // FIXME: We need to build the lookups table, which is logically const.
4727 auto *DC = const_cast<DeclContext*>(ConstDC);
4728 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table");
4729
4730 // Create the on-disk hash table representation.
4731 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
4732 ASTDeclContextNameLookupTrait>
4733 Generator;
4734 ASTDeclContextNameLookupTrait Trait(*this, *DC);
4735
4736 // The first step is to collect the declaration names which we need to
4737 // serialize into the name lookup table, and to collect them in a stable
4738 // order.
4739 SmallVector<DeclarationName, 16> Names;
4740
4741 // We also track whether we're writing out the DeclarationNameKey for
4742 // constructors or conversion functions.
4743 bool IncludeConstructorNames = false;
4744 bool IncludeConversionNames = false;
4745
4746 for (auto &[Name, Result] : *DC->buildLookup()) {
4747 // If there are no local declarations in our lookup result, we
4748 // don't need to write an entry for the name at all. If we can't
4749 // write out a lookup set without performing more deserialization,
4750 // just skip this entry.
4751 //
4752 // Also in reduced BMI, we'd like to avoid writing unreachable
4753 // declarations in GMF, so we need to avoid writing declarations
4754 // that entirely external or unreachable.
4755 if (GeneratingReducedBMI && isLookupResultNotInteresting(Writer&: *this, Result))
4756 continue;
4757 // We also skip empty results. If any of the results could be external and
4758 // the currently available results are empty, then all of the results are
4759 // external and we skip it above. So the only way we get here with an empty
4760 // results is when no results could have been external *and* we have
4761 // external results.
4762 //
4763 // FIXME: While we might want to start emitting on-disk entries for negative
4764 // lookups into a decl context as an optimization, today we *have* to skip
4765 // them because there are names with empty lookup results in decl contexts
4766 // which we can't emit in any stable ordering: we lookup constructors and
4767 // conversion functions in the enclosing namespace scope creating empty
4768 // results for them. This in almost certainly a bug in Clang's name lookup,
4769 // but that is likely to be hard or impossible to fix and so we tolerate it
4770 // here by omitting lookups with empty results.
4771 if (Result.getLookupResult().empty())
4772 continue;
4773
4774 switch (Name.getNameKind()) {
4775 default:
4776 Names.push_back(Elt: Name);
4777 break;
4778
4779 case DeclarationName::CXXConstructorName:
4780 IncludeConstructorNames = true;
4781 break;
4782
4783 case DeclarationName::CXXConversionFunctionName:
4784 IncludeConversionNames = true;
4785 break;
4786 }
4787 }
4788
4789 // Sort the names into a stable order.
4790 llvm::sort(C&: Names);
4791
4792 if (IncludeConstructorNames || IncludeConversionNames) {
4793 // We need to establish an ordering of constructor and conversion function
4794 // names, and they don't have an intrinsic ordering. We also need to write
4795 // out all constructor and conversion function results if we write out any
4796 // of them, because they're all tracked under the same lookup key.
4797 llvm::SmallPtrSet<DeclarationName, 8> AddedNames;
4798 for (Decl *ChildD : cast<CXXRecordDecl>(Val: DC)->decls()) {
4799 if (auto *ChildND = dyn_cast<NamedDecl>(Val: ChildD)) {
4800 auto Name = ChildND->getDeclName();
4801 switch (Name.getNameKind()) {
4802 default:
4803 continue;
4804
4805 case DeclarationName::CXXConstructorName:
4806 if (!IncludeConstructorNames)
4807 continue;
4808 break;
4809
4810 case DeclarationName::CXXConversionFunctionName:
4811 if (!IncludeConversionNames)
4812 continue;
4813 break;
4814 }
4815 if (AddedNames.insert(Ptr: Name).second)
4816 Names.push_back(Elt: Name);
4817 }
4818 }
4819 }
4820 // Next we need to do a lookup with each name into this decl context to fully
4821 // populate any results from external sources. We don't actually use the
4822 // results of these lookups because we only want to use the results after all
4823 // results have been loaded and the pointers into them will be stable.
4824 for (auto &Name : Names)
4825 DC->lookup(Name);
4826
4827 // Now we need to insert the results for each name into the hash table. For
4828 // constructor names and conversion function names, we actually need to merge
4829 // all of the results for them into one list of results each and insert
4830 // those.
4831 SmallVector<NamedDecl *, 8> ConstructorDecls;
4832 SmallVector<NamedDecl *, 8> ConversionDecls;
4833
4834 // Now loop over the names, either inserting them or appending for the two
4835 // special cases.
4836 for (auto &Name : Names) {
4837 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4838
4839 switch (Name.getNameKind()) {
4840 default:
4841 Generator.insert(Key: Name, Data: Trait.getData(Decls: Result), Info&: Trait);
4842 break;
4843
4844 case DeclarationName::CXXConstructorName:
4845 ConstructorDecls.append(in_start: Result.begin(), in_end: Result.end());
4846 break;
4847
4848 case DeclarationName::CXXConversionFunctionName:
4849 ConversionDecls.append(in_start: Result.begin(), in_end: Result.end());
4850 break;
4851 }
4852 }
4853
4854 // Handle our two special cases if we ended up having any. We arbitrarily use
4855 // the first declaration's name here because the name itself isn't part of
4856 // the key, only the kind of name is used.
4857 if (!ConstructorDecls.empty())
4858 Generator.insert(Key: ConstructorDecls.front()->getDeclName(),
4859 Data: Trait.getData(Decls: ConstructorDecls), Info&: Trait);
4860 if (!ConversionDecls.empty())
4861 Generator.insert(Key: ConversionDecls.front()->getDeclName(),
4862 Data: Trait.getData(Decls: ConversionDecls), Info&: Trait);
4863
4864 // Create the on-disk hash table. Also emit the existing imported and
4865 // merged table if there is one.
4866 auto *Lookups = Chain ? Chain->getLoadedLookupTables(Primary: DC) : nullptr;
4867 // Reduced BMI may not emit everything in the lookup table,
4868 // If Reduced BMI **partially** emits some decls,
4869 // then the generator may not emit the corresponding entry for the
4870 // corresponding name is already there. See
4871 // MultiOnDiskHashTableGenerator::insert and
4872 // MultiOnDiskHashTableGenerator::emit for details.
4873 // So we won't emit the lookup table if we're generating reduced BMI.
4874 auto *ToEmitMaybeMergedLookupTable =
4875 (!isGeneratingReducedBMI() && Lookups) ? &Lookups->Table : nullptr;
4876 Generator.emit(Out&: LookupTable, Info&: Trait, Base: ToEmitMaybeMergedLookupTable);
4877
4878 const auto &ModuleLocalDecls = Trait.getModuleLocalDecls();
4879 if (!ModuleLocalDecls.empty()) {
4880 MultiOnDiskHashTableGenerator<reader::ModuleLocalNameLookupTrait,
4881 ModuleLevelNameLookupTrait>
4882 ModuleLocalLookupGenerator;
4883 ModuleLevelNameLookupTrait ModuleLocalTrait(*this);
4884
4885 for (const auto &ModuleLocalIter : ModuleLocalDecls) {
4886 const auto &Key = ModuleLocalIter.first;
4887 const auto &IDs = ModuleLocalIter.second;
4888 ModuleLocalLookupGenerator.insert(Key, Data: ModuleLocalTrait.getData(LocalIDs: IDs),
4889 Info&: ModuleLocalTrait);
4890 }
4891
4892 // See the above comment. We won't emit the merged table if we're generating
4893 // reduced BMI.
4894 auto *ModuleLocalLookups =
4895 (isGeneratingReducedBMI() && Chain &&
4896 Chain->getModuleLocalLookupTables(Primary: DC))
4897 ? &Chain->getModuleLocalLookupTables(Primary: DC)->Table
4898 : nullptr;
4899 ModuleLocalLookupGenerator.emit(Out&: ModuleLocalLookupTable, Info&: ModuleLocalTrait,
4900 Base: ModuleLocalLookups);
4901 }
4902
4903 const auto &TULocalDecls = Trait.getTULocalDecls();
4904 if (!TULocalDecls.empty() && !isGeneratingReducedBMI()) {
4905 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
4906 ASTDeclContextNameTrivialLookupTrait>
4907 TULookupGenerator;
4908 ASTDeclContextNameTrivialLookupTrait TULocalTrait(*this);
4909
4910 for (const auto &TULocalIter : TULocalDecls) {
4911 const auto &Key = TULocalIter.first;
4912 const auto &IDs = TULocalIter.second;
4913 TULookupGenerator.insert(Key, Data: TULocalTrait.getData(LocalIDs: IDs), Info&: TULocalTrait);
4914 }
4915
4916 // See the above comment. We won't emit the merged table if we're generating
4917 // reduced BMI.
4918 auto *TULocalLookups =
4919 (isGeneratingReducedBMI() && Chain && Chain->getTULocalLookupTables(Primary: DC))
4920 ? &Chain->getTULocalLookupTables(Primary: DC)->Table
4921 : nullptr;
4922 TULookupGenerator.emit(Out&: TULookupTable, Info&: TULocalTrait, Base: TULocalLookups);
4923 }
4924}
4925
4926/// Write the block containing all of the declaration IDs
4927/// visible from the given DeclContext.
4928///
4929/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4930/// bitstream, or 0 if no block was written.
4931void ASTWriter::WriteDeclContextVisibleBlock(
4932 ASTContext &Context, DeclContext *DC, VisibleLookupBlockOffsets &Offsets) {
4933 assert(!Offsets);
4934
4935 // If we imported a key declaration of this namespace, write the visible
4936 // lookup results as an update record for it rather than including them
4937 // on this declaration. We will only look at key declarations on reload.
4938 if (isa<NamespaceDecl>(Val: DC) && Chain &&
4939 Chain->getKeyDeclaration(D: cast<Decl>(Val: DC))->isFromASTFile()) {
4940 // Only do this once, for the first local declaration of the namespace.
4941 for (auto *Prev = cast<NamespaceDecl>(Val: DC)->getPreviousDecl(); Prev;
4942 Prev = Prev->getPreviousDecl())
4943 if (!Prev->isFromASTFile())
4944 return;
4945
4946 // Note that we need to emit an update record for the primary context.
4947 UpdatedDeclContexts.insert(X: DC->getPrimaryContext());
4948
4949 // Make sure all visible decls are written. They will be recorded later. We
4950 // do this using a side data structure so we can sort the names into
4951 // a deterministic order.
4952 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4953 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4954 LookupResults;
4955 if (Map) {
4956 LookupResults.reserve(N: Map->size());
4957 for (auto &Entry : *Map)
4958 LookupResults.push_back(
4959 Elt: std::make_pair(x&: Entry.first, y: Entry.second.getLookupResult()));
4960 }
4961
4962 llvm::sort(C&: LookupResults, Comp: llvm::less_first());
4963 for (auto &NameAndResult : LookupResults) {
4964 DeclarationName Name = NameAndResult.first;
4965 DeclContext::lookup_result Result = NameAndResult.second;
4966 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4967 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4968 // We have to work around a name lookup bug here where negative lookup
4969 // results for these names get cached in namespace lookup tables (these
4970 // names should never be looked up in a namespace).
4971 assert(Result.empty() && "Cannot have a constructor or conversion "
4972 "function name in a namespace!");
4973 continue;
4974 }
4975
4976 for (NamedDecl *ND : Result) {
4977 if (ND->isFromASTFile())
4978 continue;
4979
4980 if (DoneWritingDeclsAndTypes && !wasDeclEmitted(D: ND))
4981 continue;
4982
4983 // We don't need to force emitting internal decls into reduced BMI.
4984 // See comments in ASTWriter::WriteDeclContextLexicalBlock for details.
4985 if (GeneratingReducedBMI && !ND->isFromExplicitGlobalModule() &&
4986 IsInternalDeclFromFileContext(D: ND))
4987 continue;
4988
4989 GetDeclRef(D: ND);
4990 }
4991 }
4992
4993 return;
4994 }
4995
4996 if (DC->getPrimaryContext() != DC)
4997 return;
4998
4999 // Skip contexts which don't support name lookup.
5000 if (!DC->isLookupContext())
5001 return;
5002
5003 // If not in C++, we perform name lookup for the translation unit via the
5004 // IdentifierInfo chains, don't bother to build a visible-declarations table.
5005 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
5006 return;
5007
5008 // Serialize the contents of the mapping used for lookup. Note that,
5009 // although we have two very different code paths, the serialized
5010 // representation is the same for both cases: a declaration name,
5011 // followed by a size, followed by references to the visible
5012 // declarations that have that name.
5013 StoredDeclsMap *Map = DC->buildLookup();
5014 if (!Map || Map->empty())
5015 return;
5016
5017 Offsets.VisibleOffset = Stream.GetCurrentBitNo();
5018 // Create the on-disk hash table in a buffer.
5019 SmallString<4096> LookupTable;
5020 SmallString<4096> ModuleLocalLookupTable;
5021 SmallString<4096> TULookupTable;
5022 GenerateNameLookupTable(Context, ConstDC: DC, LookupTable, ModuleLocalLookupTable,
5023 TULookupTable);
5024
5025 // Write the lookup table
5026 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
5027 Stream.EmitRecordWithBlob(Abbrev: DeclContextVisibleLookupAbbrev, Vals: Record,
5028 Blob: LookupTable);
5029 ++NumVisibleDeclContexts;
5030
5031 if (!ModuleLocalLookupTable.empty()) {
5032 Offsets.ModuleLocalOffset = Stream.GetCurrentBitNo();
5033 assert(Offsets.ModuleLocalOffset > Offsets.VisibleOffset);
5034 // Write the lookup table
5035 RecordData::value_type ModuleLocalRecord[] = {
5036 DECL_CONTEXT_MODULE_LOCAL_VISIBLE};
5037 Stream.EmitRecordWithBlob(Abbrev: DeclModuleLocalVisibleLookupAbbrev,
5038 Vals: ModuleLocalRecord, Blob: ModuleLocalLookupTable);
5039 ++NumModuleLocalDeclContexts;
5040 }
5041
5042 if (!TULookupTable.empty()) {
5043 Offsets.TULocalOffset = Stream.GetCurrentBitNo();
5044 // Write the lookup table
5045 RecordData::value_type TULocalDeclsRecord[] = {
5046 DECL_CONTEXT_TU_LOCAL_VISIBLE};
5047 Stream.EmitRecordWithBlob(Abbrev: DeclTULocalLookupAbbrev, Vals: TULocalDeclsRecord,
5048 Blob: TULookupTable);
5049 ++NumTULocalDeclContexts;
5050 }
5051}
5052
5053/// Write an UPDATE_VISIBLE block for the given context.
5054///
5055/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
5056/// DeclContext in a dependent AST file. As such, they only exist for the TU
5057/// (in C++), for namespaces, and for classes with forward-declared unscoped
5058/// enumeration members (in C++11).
5059void ASTWriter::WriteDeclContextVisibleUpdate(ASTContext &Context,
5060 const DeclContext *DC) {
5061 StoredDeclsMap *Map = DC->getLookupPtr();
5062 if (!Map || Map->empty())
5063 return;
5064
5065 // Create the on-disk hash table in a buffer.
5066 SmallString<4096> LookupTable;
5067 SmallString<4096> ModuleLocalLookupTable;
5068 SmallString<4096> TULookupTable;
5069 GenerateNameLookupTable(Context, ConstDC: DC, LookupTable, ModuleLocalLookupTable,
5070 TULookupTable);
5071
5072 // If we're updating a namespace, select a key declaration as the key for the
5073 // update record; those are the only ones that will be checked on reload.
5074 if (isa<NamespaceDecl>(Val: DC))
5075 DC = cast<DeclContext>(Val: Chain->getKeyDeclaration(D: cast<Decl>(Val: DC)));
5076
5077 // Write the lookup table
5078 RecordData::value_type Record[] = {UPDATE_VISIBLE,
5079 getDeclID(D: cast<Decl>(Val: DC)).getRawValue()};
5080 Stream.EmitRecordWithBlob(Abbrev: UpdateVisibleAbbrev, Vals: Record, Blob: LookupTable);
5081
5082 if (!ModuleLocalLookupTable.empty()) {
5083 // Write the module local lookup table
5084 RecordData::value_type ModuleLocalRecord[] = {
5085 UPDATE_MODULE_LOCAL_VISIBLE, getDeclID(D: cast<Decl>(Val: DC)).getRawValue()};
5086 Stream.EmitRecordWithBlob(Abbrev: ModuleLocalUpdateVisibleAbbrev, Vals: ModuleLocalRecord,
5087 Blob: ModuleLocalLookupTable);
5088 }
5089
5090 if (!TULookupTable.empty()) {
5091 RecordData::value_type GMFRecord[] = {
5092 UPDATE_TU_LOCAL_VISIBLE, getDeclID(D: cast<Decl>(Val: DC)).getRawValue()};
5093 Stream.EmitRecordWithBlob(Abbrev: TULocalUpdateVisibleAbbrev, Vals: GMFRecord,
5094 Blob: TULookupTable);
5095 }
5096}
5097
5098/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
5099void ASTWriter::WriteFPPragmaOptions(const FPOptionsOverride &Opts) {
5100 RecordData::value_type Record[] = {Opts.getAsOpaqueInt()};
5101 Stream.EmitRecord(Code: FP_PRAGMA_OPTIONS, Vals: Record);
5102}
5103
5104/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
5105void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
5106 if (!SemaRef.Context.getLangOpts().OpenCL)
5107 return;
5108
5109 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
5110 RecordData Record;
5111 for (const auto &I:Opts.OptMap) {
5112 AddString(Str: I.getKey(), Record);
5113 auto V = I.getValue();
5114 Record.push_back(Elt: V.Supported ? 1 : 0);
5115 Record.push_back(Elt: V.Enabled ? 1 : 0);
5116 Record.push_back(Elt: V.WithPragma ? 1 : 0);
5117 Record.push_back(Elt: V.Avail);
5118 Record.push_back(Elt: V.Core);
5119 Record.push_back(Elt: V.Opt);
5120 }
5121 Stream.EmitRecord(Code: OPENCL_EXTENSIONS, Vals: Record);
5122}
5123void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
5124 if (SemaRef.CUDA().ForceHostDeviceDepth > 0) {
5125 RecordData::value_type Record[] = {SemaRef.CUDA().ForceHostDeviceDepth};
5126 Stream.EmitRecord(Code: CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Vals: Record);
5127 }
5128}
5129
5130void ASTWriter::WriteObjCCategories() {
5131 if (ObjCClassesWithCategories.empty())
5132 return;
5133
5134 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
5135 RecordData Categories;
5136
5137 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
5138 unsigned Size = 0;
5139 unsigned StartIndex = Categories.size();
5140
5141 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
5142
5143 // Allocate space for the size.
5144 Categories.push_back(Elt: 0);
5145
5146 // Add the categories.
5147 for (ObjCInterfaceDecl::known_categories_iterator
5148 Cat = Class->known_categories_begin(),
5149 CatEnd = Class->known_categories_end();
5150 Cat != CatEnd; ++Cat, ++Size) {
5151 assert(getDeclID(*Cat).isValid() && "Bogus category");
5152 AddDeclRef(D: *Cat, Record&: Categories);
5153 }
5154
5155 // Update the size.
5156 Categories[StartIndex] = Size;
5157
5158 // Record this interface -> category map.
5159 ObjCCategoriesInfo CatInfo = { getDeclID(D: Class), StartIndex };
5160 CategoriesMap.push_back(Elt: CatInfo);
5161 }
5162
5163 // Sort the categories map by the definition ID, since the reader will be
5164 // performing binary searches on this information.
5165 llvm::array_pod_sort(Start: CategoriesMap.begin(), End: CategoriesMap.end());
5166
5167 // Emit the categories map.
5168 using namespace llvm;
5169
5170 auto Abbrev = std::make_shared<BitCodeAbbrev>();
5171 Abbrev->Add(OpInfo: BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
5172 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
5173 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
5174 unsigned AbbrevID = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
5175
5176 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
5177 Stream.EmitRecordWithBlob(Abbrev: AbbrevID, Vals: Record,
5178 BlobData: reinterpret_cast<char *>(CategoriesMap.data()),
5179 BlobLen: CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
5180
5181 // Emit the category lists.
5182 Stream.EmitRecord(Code: OBJC_CATEGORIES, Vals: Categories);
5183}
5184
5185void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
5186 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
5187
5188 if (LPTMap.empty())
5189 return;
5190
5191 RecordData Record;
5192 for (auto &LPTMapEntry : LPTMap) {
5193 const FunctionDecl *FD = LPTMapEntry.first;
5194 LateParsedTemplate &LPT = *LPTMapEntry.second;
5195 AddDeclRef(D: FD, Record);
5196 AddDeclRef(D: LPT.D, Record);
5197 Record.push_back(Elt: LPT.FPO.getAsOpaqueInt());
5198 Record.push_back(Elt: LPT.Toks.size());
5199
5200 for (const auto &Tok : LPT.Toks) {
5201 AddToken(Tok, Record);
5202 }
5203 }
5204 Stream.EmitRecord(Code: LATE_PARSED_TEMPLATE, Vals: Record);
5205}
5206
5207/// Write the state of 'pragma clang optimize' at the end of the module.
5208void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
5209 RecordData Record;
5210 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
5211 AddSourceLocation(Loc: PragmaLoc, Record);
5212 Stream.EmitRecord(Code: OPTIMIZE_PRAGMA_OPTIONS, Vals: Record);
5213}
5214
5215/// Write the state of 'pragma ms_struct' at the end of the module.
5216void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
5217 RecordData Record;
5218 Record.push_back(Elt: SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
5219 Stream.EmitRecord(Code: MSSTRUCT_PRAGMA_OPTIONS, Vals: Record);
5220}
5221
5222/// Write the state of 'pragma pointers_to_members' at the end of the
5223//module.
5224void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
5225 RecordData Record;
5226 Record.push_back(Elt: SemaRef.MSPointerToMemberRepresentationMethod);
5227 AddSourceLocation(Loc: SemaRef.ImplicitMSInheritanceAttrLoc, Record);
5228 Stream.EmitRecord(Code: POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Vals: Record);
5229}
5230
5231/// Write the state of 'pragma align/pack' at the end of the module.
5232void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
5233 // Don't serialize pragma align/pack state for modules, since it should only
5234 // take effect on a per-submodule basis.
5235 if (WritingModule)
5236 return;
5237
5238 RecordData Record;
5239 AddAlignPackInfo(Info: SemaRef.AlignPackStack.CurrentValue, Record);
5240 AddSourceLocation(Loc: SemaRef.AlignPackStack.CurrentPragmaLocation, Record);
5241 Record.push_back(Elt: SemaRef.AlignPackStack.Stack.size());
5242 for (const auto &StackEntry : SemaRef.AlignPackStack.Stack) {
5243 AddAlignPackInfo(Info: StackEntry.Value, Record);
5244 AddSourceLocation(Loc: StackEntry.PragmaLocation, Record);
5245 AddSourceLocation(Loc: StackEntry.PragmaPushLocation, Record);
5246 AddString(Str: StackEntry.StackSlotLabel, Record);
5247 }
5248 Stream.EmitRecord(Code: ALIGN_PACK_PRAGMA_OPTIONS, Vals: Record);
5249}
5250
5251/// Write the state of 'pragma float_control' at the end of the module.
5252void ASTWriter::WriteFloatControlPragmaOptions(Sema &SemaRef) {
5253 // Don't serialize pragma float_control state for modules,
5254 // since it should only take effect on a per-submodule basis.
5255 if (WritingModule)
5256 return;
5257
5258 RecordData Record;
5259 Record.push_back(Elt: SemaRef.FpPragmaStack.CurrentValue.getAsOpaqueInt());
5260 AddSourceLocation(Loc: SemaRef.FpPragmaStack.CurrentPragmaLocation, Record);
5261 Record.push_back(Elt: SemaRef.FpPragmaStack.Stack.size());
5262 for (const auto &StackEntry : SemaRef.FpPragmaStack.Stack) {
5263 Record.push_back(Elt: StackEntry.Value.getAsOpaqueInt());
5264 AddSourceLocation(Loc: StackEntry.PragmaLocation, Record);
5265 AddSourceLocation(Loc: StackEntry.PragmaPushLocation, Record);
5266 AddString(Str: StackEntry.StackSlotLabel, Record);
5267 }
5268 Stream.EmitRecord(Code: FLOAT_CONTROL_PRAGMA_OPTIONS, Vals: Record);
5269}
5270
5271/// Write Sema's collected list of declarations with unverified effects.
5272void ASTWriter::WriteDeclsWithEffectsToVerify(Sema &SemaRef) {
5273 if (SemaRef.DeclsWithEffectsToVerify.empty())
5274 return;
5275 RecordData Record;
5276 for (const auto *D : SemaRef.DeclsWithEffectsToVerify) {
5277 AddDeclRef(D, Record);
5278 }
5279 Stream.EmitRecord(Code: DECLS_WITH_EFFECTS_TO_VERIFY, Vals: Record);
5280}
5281
5282void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
5283 ModuleFileExtensionWriter &Writer) {
5284 // Enter the extension block.
5285 Stream.EnterSubblock(BlockID: EXTENSION_BLOCK_ID, CodeLen: 4);
5286
5287 // Emit the metadata record abbreviation.
5288 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
5289 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
5290 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
5291 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
5292 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
5293 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
5294 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
5295 unsigned Abbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
5296
5297 // Emit the metadata record.
5298 RecordData Record;
5299 auto Metadata = Writer.getExtension()->getExtensionMetadata();
5300 Record.push_back(Elt: EXTENSION_METADATA);
5301 Record.push_back(Elt: Metadata.MajorVersion);
5302 Record.push_back(Elt: Metadata.MinorVersion);
5303 Record.push_back(Elt: Metadata.BlockName.size());
5304 Record.push_back(Elt: Metadata.UserInfo.size());
5305 SmallString<64> Buffer;
5306 Buffer += Metadata.BlockName;
5307 Buffer += Metadata.UserInfo;
5308 Stream.EmitRecordWithBlob(Abbrev, Vals: Record, Blob: Buffer);
5309
5310 // Emit the contents of the extension block.
5311 Writer.writeExtensionContents(SemaRef, Stream);
5312
5313 // Exit the extension block.
5314 Stream.ExitBlock();
5315}
5316
5317void ASTWriter::WriteRISCVIntrinsicPragmas(Sema &SemaRef) {
5318 RecordData Record;
5319 // Need to update this when new intrinsic class is added.
5320 Record.push_back(/*size*/ Elt: 3);
5321 Record.push_back(Elt: SemaRef.RISCV().DeclareRVVBuiltins);
5322 Record.push_back(Elt: SemaRef.RISCV().DeclareSiFiveVectorBuiltins);
5323 Record.push_back(Elt: SemaRef.RISCV().DeclareAndesVectorBuiltins);
5324 Stream.EmitRecord(Code: RISCV_VECTOR_INTRINSICS_PRAGMA, Vals: Record);
5325}
5326
5327//===----------------------------------------------------------------------===//
5328// General Serialization Routines
5329//===----------------------------------------------------------------------===//
5330
5331void ASTRecordWriter::AddAttr(const Attr *A) {
5332 auto &Record = *this;
5333 // FIXME: Clang can't handle the serialization/deserialization of
5334 // preferred_name properly now. See
5335 // https://github.com/llvm/llvm-project/issues/56490 for example.
5336 if (!A ||
5337 (isa<PreferredNameAttr>(Val: A) && (Writer->isWritingStdCXXNamedModules() ||
5338 Writer->isWritingStdCXXHeaderUnit())))
5339 return Record.push_back(N: 0);
5340
5341 Record.push_back(N: A->getKind() + 1); // FIXME: stable encoding, target attrs
5342
5343 Record.AddIdentifierRef(II: A->getAttrName());
5344 Record.AddIdentifierRef(II: A->getScopeName());
5345 Record.AddSourceRange(Range: A->getRange());
5346 Record.AddSourceLocation(Loc: A->getScopeLoc());
5347 Record.push_back(N: A->getParsedKind());
5348 Record.push_back(N: A->getSyntax());
5349 Record.push_back(N: A->getAttributeSpellingListIndexRaw());
5350 Record.push_back(N: A->isRegularKeywordAttribute());
5351
5352#include "clang/Serialization/AttrPCHWrite.inc"
5353}
5354
5355/// Emit the list of attributes to the specified record.
5356void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
5357 push_back(N: Attrs.size());
5358 for (const auto *A : Attrs)
5359 AddAttr(A);
5360}
5361
5362void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
5363 AddSourceLocation(Loc: Tok.getLocation(), Record);
5364 // FIXME: Should translate token kind to a stable encoding.
5365 Record.push_back(Elt: Tok.getKind());
5366 // FIXME: Should translate token flags to a stable encoding.
5367 Record.push_back(Elt: Tok.getFlags());
5368
5369 if (Tok.isAnnotation()) {
5370 AddSourceLocation(Loc: Tok.getAnnotationEndLoc(), Record);
5371 switch (Tok.getKind()) {
5372 case tok::annot_pragma_loop_hint: {
5373 auto *Info = static_cast<PragmaLoopHintInfo *>(Tok.getAnnotationValue());
5374 AddToken(Tok: Info->PragmaName, Record);
5375 AddToken(Tok: Info->Option, Record);
5376 Record.push_back(Elt: Info->Toks.size());
5377 for (const auto &T : Info->Toks)
5378 AddToken(Tok: T, Record);
5379 break;
5380 }
5381 case tok::annot_pragma_pack: {
5382 auto *Info =
5383 static_cast<Sema::PragmaPackInfo *>(Tok.getAnnotationValue());
5384 Record.push_back(Elt: static_cast<unsigned>(Info->Action));
5385 AddString(Str: Info->SlotLabel, Record);
5386 AddToken(Tok: Info->Alignment, Record);
5387 break;
5388 }
5389 // Some annotation tokens do not use the PtrData field.
5390 case tok::annot_pragma_openmp:
5391 case tok::annot_pragma_openmp_end:
5392 case tok::annot_pragma_unused:
5393 case tok::annot_pragma_openacc:
5394 case tok::annot_pragma_openacc_end:
5395 case tok::annot_repl_input_end:
5396 break;
5397 default:
5398 llvm_unreachable("missing serialization code for annotation token");
5399 }
5400 } else {
5401 Record.push_back(Elt: Tok.getLength());
5402 // FIXME: When reading literal tokens, reconstruct the literal pointer if it
5403 // is needed.
5404 AddIdentifierRef(II: Tok.getIdentifierInfo(), Record);
5405 }
5406}
5407
5408void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
5409 Record.push_back(Elt: Str.size());
5410 llvm::append_range(C&: Record, R&: Str);
5411}
5412
5413void ASTWriter::AddStringBlob(StringRef Str, RecordDataImpl &Record,
5414 SmallVectorImpl<char> &Blob) {
5415 Record.push_back(Elt: Str.size());
5416 llvm::append_range(C&: Blob, R&: Str);
5417}
5418
5419bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
5420 assert(WritingAST && "can't prepare path for output when not writing AST");
5421
5422 // Leave special file names as they are.
5423 StringRef PathStr(Path.data(), Path.size());
5424 if (PathStr == "<built-in>" || PathStr == "<command line>")
5425 return false;
5426
5427 bool Changed =
5428 PP->getFileManager().makeAbsolutePath(Path, /*Canonicalize=*/true);
5429 // Remove a prefix to make the path relative, if relevant.
5430 const char *PathBegin = Path.data();
5431 const char *PathPtr =
5432 adjustFilenameForRelocatableAST(Filename: PathBegin, BaseDir: BaseDirectory);
5433 if (PathPtr != PathBegin) {
5434 Path.erase(CS: Path.begin(), CE: Path.begin() + (PathPtr - PathBegin));
5435 Changed = true;
5436 }
5437
5438 return Changed;
5439}
5440
5441void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
5442 SmallString<128> FilePath(Path);
5443 PreparePathForOutput(Path&: FilePath);
5444 AddString(Str: FilePath, Record);
5445}
5446
5447void ASTWriter::AddPathBlob(StringRef Path, RecordDataImpl &Record,
5448 SmallVectorImpl<char> &Blob) {
5449 SmallString<128> FilePath(Path);
5450 PreparePathForOutput(Path&: FilePath);
5451 AddStringBlob(Str: FilePath, Record, Blob);
5452}
5453
5454void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
5455 StringRef Path) {
5456 SmallString<128> FilePath(Path);
5457 PreparePathForOutput(Path&: FilePath);
5458 Stream.EmitRecordWithBlob(Abbrev, Vals: Record, Blob: FilePath);
5459}
5460
5461void ASTWriter::AddVersionTuple(const VersionTuple &Version,
5462 RecordDataImpl &Record) {
5463 Record.push_back(Elt: Version.getMajor());
5464 if (std::optional<unsigned> Minor = Version.getMinor())
5465 Record.push_back(Elt: *Minor + 1);
5466 else
5467 Record.push_back(Elt: 0);
5468 if (std::optional<unsigned> Subminor = Version.getSubminor())
5469 Record.push_back(Elt: *Subminor + 1);
5470 else
5471 Record.push_back(Elt: 0);
5472}
5473
5474/// Note that the identifier II occurs at the given offset
5475/// within the identifier table.
5476void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
5477 IdentifierID ID = IdentifierIDs[II];
5478 // Only store offsets new to this AST file. Other identifier names are looked
5479 // up earlier in the chain and thus don't need an offset.
5480 if (!isLocalIdentifierID(ID))
5481 return;
5482
5483 // For local identifiers, the module file index must be 0.
5484
5485 assert(ID != 0);
5486 ID -= NUM_PREDEF_IDENT_IDS;
5487 assert(ID < IdentifierOffsets.size());
5488 IdentifierOffsets[ID] = Offset;
5489}
5490
5491/// Note that the selector Sel occurs at the given offset
5492/// within the method pool/selector table.
5493void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
5494 unsigned ID = SelectorIDs[Sel];
5495 assert(ID && "Unknown selector");
5496 // Don't record offsets for selectors that are also available in a different
5497 // file.
5498 if (ID < FirstSelectorID)
5499 return;
5500 SelectorOffsets[ID - FirstSelectorID] = Offset;
5501}
5502
5503ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
5504 SmallVectorImpl<char> &Buffer, ModuleCache &ModCache,
5505 const CodeGenOptions &CodeGenOpts,
5506 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
5507 bool IncludeTimestamps, bool BuildingImplicitModule,
5508 bool GeneratingReducedBMI)
5509 : Stream(Stream), Buffer(Buffer), ModCache(ModCache),
5510 CodeGenOpts(CodeGenOpts), IncludeTimestamps(IncludeTimestamps),
5511 BuildingImplicitModule(BuildingImplicitModule),
5512 GeneratingReducedBMI(GeneratingReducedBMI) {
5513 for (const auto &Ext : Extensions) {
5514 if (auto Writer = Ext->createExtensionWriter(Writer&: *this))
5515 ModuleFileExtensionWriters.push_back(x: std::move(Writer));
5516 }
5517}
5518
5519ASTWriter::~ASTWriter() = default;
5520
5521const LangOptions &ASTWriter::getLangOpts() const {
5522 assert(WritingAST && "can't determine lang opts when not writing AST");
5523 return PP->getLangOpts();
5524}
5525
5526time_t ASTWriter::getTimestampForOutput(time_t ModTime) const {
5527 return IncludeTimestamps ? ModTime : 0;
5528}
5529
5530ASTFileSignature
5531ASTWriter::WriteAST(llvm::PointerUnion<Sema *, Preprocessor *> Subject,
5532 StringRef OutputFile, Module *WritingModule,
5533 StringRef isysroot) {
5534 llvm::TimeTraceScope scope("WriteAST", OutputFile);
5535 WritingAST = true;
5536
5537 Sema *SemaPtr = dyn_cast<Sema *>(Val&: Subject);
5538 Preprocessor &PPRef =
5539 SemaPtr ? SemaPtr->getPreprocessor() : *cast<Preprocessor *>(Val&: Subject);
5540
5541 ASTHasCompilerErrors = PPRef.getDiagnostics().hasUncompilableErrorOccurred();
5542
5543 // Emit the file header.
5544 Stream.Emit(Val: (unsigned)'C', NumBits: 8);
5545 Stream.Emit(Val: (unsigned)'P', NumBits: 8);
5546 Stream.Emit(Val: (unsigned)'C', NumBits: 8);
5547 Stream.Emit(Val: (unsigned)'H', NumBits: 8);
5548
5549 WriteBlockInfoBlock();
5550
5551 PP = &PPRef;
5552 this->WritingModule = WritingModule;
5553 ASTFileSignature Signature = WriteASTCore(SemaPtr, isysroot, WritingModule);
5554 PP = nullptr;
5555 this->WritingModule = nullptr;
5556 this->BaseDirectory.clear();
5557
5558 WritingAST = false;
5559
5560 return Signature;
5561}
5562
5563template<typename Vector>
5564static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec) {
5565 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
5566 I != E; ++I) {
5567 Writer.GetDeclRef(D: *I);
5568 }
5569}
5570
5571template <typename Vector>
5572static void AddLazyVectorEmiitedDecls(ASTWriter &Writer, Vector &Vec,
5573 ASTWriter::RecordData &Record) {
5574 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
5575 I != E; ++I) {
5576 Writer.AddEmittedDeclRef(D: *I, Record);
5577 }
5578}
5579
5580void ASTWriter::computeNonAffectingInputFiles() {
5581 SourceManager &SrcMgr = PP->getSourceManager();
5582 unsigned N = SrcMgr.local_sloc_entry_size();
5583
5584 IsSLocAffecting.resize(N, t: true);
5585 IsSLocFileEntryAffecting.resize(N, t: true);
5586
5587 if (!WritingModule)
5588 return;
5589
5590 auto AffectingModuleMaps = GetAffectingModuleMaps(PP: *PP, RootModule: WritingModule);
5591
5592 unsigned FileIDAdjustment = 0;
5593 unsigned OffsetAdjustment = 0;
5594
5595 NonAffectingFileIDAdjustments.reserve(n: N);
5596 NonAffectingOffsetAdjustments.reserve(n: N);
5597
5598 NonAffectingFileIDAdjustments.push_back(x: FileIDAdjustment);
5599 NonAffectingOffsetAdjustments.push_back(x: OffsetAdjustment);
5600
5601 for (unsigned I = 1; I != N; ++I) {
5602 const SrcMgr::SLocEntry *SLoc = &SrcMgr.getLocalSLocEntry(Index: I);
5603 FileID FID = FileID::get(V: I);
5604 assert(&SrcMgr.getSLocEntry(FID) == SLoc);
5605
5606 if (!SLoc->isFile())
5607 continue;
5608 const SrcMgr::FileInfo &File = SLoc->getFile();
5609 const SrcMgr::ContentCache *Cache = &File.getContentCache();
5610 if (!Cache->OrigEntry)
5611 continue;
5612
5613 // Don't prune anything other than module maps.
5614 if (!isModuleMap(CK: File.getFileCharacteristic()))
5615 continue;
5616
5617 // Don't prune module maps if all are guaranteed to be affecting.
5618 if (!AffectingModuleMaps)
5619 continue;
5620
5621 // Don't prune module maps that are affecting.
5622 if (AffectingModuleMaps->DefinitionFileIDs.contains(V: FID))
5623 continue;
5624
5625 IsSLocAffecting[I] = false;
5626 IsSLocFileEntryAffecting[I] =
5627 AffectingModuleMaps->DefinitionFiles.contains(V: *Cache->OrigEntry);
5628
5629 FileIDAdjustment += 1;
5630 // Even empty files take up one element in the offset table.
5631 OffsetAdjustment += SrcMgr.getFileIDSize(FID) + 1;
5632
5633 // If the previous file was non-affecting as well, just extend its entry
5634 // with our information.
5635 if (!NonAffectingFileIDs.empty() &&
5636 NonAffectingFileIDs.back().ID == FID.ID - 1) {
5637 NonAffectingFileIDs.back() = FID;
5638 NonAffectingRanges.back().setEnd(SrcMgr.getLocForEndOfFile(FID));
5639 NonAffectingFileIDAdjustments.back() = FileIDAdjustment;
5640 NonAffectingOffsetAdjustments.back() = OffsetAdjustment;
5641 continue;
5642 }
5643
5644 NonAffectingFileIDs.push_back(x: FID);
5645 NonAffectingRanges.emplace_back(args: SrcMgr.getLocForStartOfFile(FID),
5646 args: SrcMgr.getLocForEndOfFile(FID));
5647 NonAffectingFileIDAdjustments.push_back(x: FileIDAdjustment);
5648 NonAffectingOffsetAdjustments.push_back(x: OffsetAdjustment);
5649 }
5650
5651 if (!PP->getHeaderSearchInfo().getHeaderSearchOpts().ModulesIncludeVFSUsage)
5652 return;
5653
5654 FileManager &FileMgr = PP->getFileManager();
5655 FileMgr.trackVFSUsage(Active: true);
5656 // Lookup the paths in the VFS to trigger `-ivfsoverlay` usage tracking.
5657 for (StringRef Path :
5658 PP->getHeaderSearchInfo().getHeaderSearchOpts().VFSOverlayFiles)
5659 FileMgr.getVirtualFileSystem().exists(Path);
5660 for (unsigned I = 1; I != N; ++I) {
5661 if (IsSLocAffecting[I]) {
5662 const SrcMgr::SLocEntry *SLoc = &SrcMgr.getLocalSLocEntry(Index: I);
5663 if (!SLoc->isFile())
5664 continue;
5665 const SrcMgr::FileInfo &File = SLoc->getFile();
5666 const SrcMgr::ContentCache *Cache = &File.getContentCache();
5667 if (!Cache->OrigEntry)
5668 continue;
5669 FileMgr.getVirtualFileSystem().exists(
5670 Path: Cache->OrigEntry->getNameAsRequested());
5671 }
5672 }
5673 FileMgr.trackVFSUsage(Active: false);
5674}
5675
5676void ASTWriter::prepareLazyUpdates() {
5677 // In C++20 named modules with reduced BMI, we only apply the update
5678 // if these updates are touched.
5679 if (!GeneratingReducedBMI)
5680 return;
5681
5682 DeclUpdateMap DeclUpdatesTmp;
5683 // Move updates to DeclUpdatesLazy but leave CXXAddedFunctionDefinition as is.
5684 // Since added function definition is critical to the AST. If we don't take
5685 // care of it, user might meet missing definition error at linking time.
5686 // Here we leave all CXXAddedFunctionDefinition unconditionally to avoid
5687 // potential issues.
5688 // TODO: Try to refine the strategy to handle CXXAddedFunctionDefinition
5689 // precisely.
5690 for (auto &DeclUpdate : DeclUpdates) {
5691 const Decl *D = DeclUpdate.first;
5692
5693 for (auto &Update : DeclUpdate.second) {
5694 DeclUpdateKind Kind = Update.getKind();
5695
5696 if (Kind == DeclUpdateKind::CXXAddedFunctionDefinition)
5697 DeclUpdatesTmp[D].push_back(
5698 Elt: ASTWriter::DeclUpdate(DeclUpdateKind::CXXAddedFunctionDefinition));
5699 else
5700 DeclUpdatesLazy[D].push_back(Elt: Update);
5701 }
5702 }
5703 DeclUpdates.swap(RHS&: DeclUpdatesTmp);
5704
5705 UpdatedDeclContextsLazy.swap(RHS&: UpdatedDeclContexts);
5706 // In reduced BMI, we don't have decls have to emit even if unreferenced.
5707 DeclsToEmitEvenIfUnreferenced.clear();
5708}
5709
5710void ASTWriter::PrepareWritingSpecialDecls(Sema &SemaRef) {
5711 ASTContext &Context = SemaRef.Context;
5712
5713 bool isModule = WritingModule != nullptr;
5714
5715 prepareLazyUpdates();
5716
5717 // Set up predefined declaration IDs.
5718 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
5719 if (D) {
5720 assert(D->isCanonicalDecl() && "predefined decl is not canonical");
5721 DeclIDs[D] = ID;
5722 PredefinedDecls.insert(Ptr: D);
5723 }
5724 };
5725 RegisterPredefDecl(Context.getTranslationUnitDecl(),
5726 PREDEF_DECL_TRANSLATION_UNIT_ID);
5727 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
5728 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
5729 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
5730 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
5731 PREDEF_DECL_OBJC_PROTOCOL_ID);
5732 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
5733 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
5734 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
5735 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
5736 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
5737 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
5738 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
5739 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
5740 RegisterPredefDecl(Context.BuiltinZOSVaListDecl,
5741 PREDEF_DECL_BUILTIN_ZOS_VA_LIST_ID);
5742 RegisterPredefDecl(Context.MSGuidTagDecl,
5743 PREDEF_DECL_BUILTIN_MS_GUID_ID);
5744 RegisterPredefDecl(Context.MSTypeInfoTagDecl,
5745 PREDEF_DECL_BUILTIN_MS_TYPE_INFO_TAG_ID);
5746 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
5747 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
5748 PREDEF_DECL_CF_CONSTANT_STRING_ID);
5749 RegisterPredefDecl(Context.CFConstantStringTagDecl,
5750 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
5751#define BuiltinTemplate(BTName) \
5752 RegisterPredefDecl(Context.Decl##BTName, PREDEF_DECL##BTName##_ID);
5753#include "clang/Basic/BuiltinTemplates.inc"
5754
5755 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
5756
5757 // Force all top level declarations to be emitted.
5758 //
5759 // We start emitting top level declarations from the module purview to
5760 // implement the eliding unreachable declaration feature.
5761 for (const auto *D : TU->noload_decls()) {
5762 if (D->isFromASTFile())
5763 continue;
5764
5765 if (GeneratingReducedBMI) {
5766 if (D->isFromExplicitGlobalModule())
5767 continue;
5768
5769 // Don't force emitting static entities.
5770 //
5771 // Technically, all static entities shouldn't be in reduced BMI. The
5772 // language also specifies that the program exposes TU-local entities
5773 // is ill-formed. However, in practice, there are a lot of projects
5774 // uses `static inline` in the headers. So we can't get rid of all
5775 // static entities in reduced BMI now.
5776 if (IsInternalDeclFromFileContext(D))
5777 continue;
5778 }
5779
5780 // If we're writing C++ named modules, don't emit declarations which are
5781 // not from modules by default. They may be built in declarations (be
5782 // handled above) or implcit declarations (see the implementation of
5783 // `Sema::Initialize()` for example).
5784 if (isWritingStdCXXNamedModules() && !D->getOwningModule() &&
5785 D->isImplicit())
5786 continue;
5787
5788 GetDeclRef(D);
5789 }
5790
5791 if (GeneratingReducedBMI)
5792 return;
5793
5794 // Writing all of the tentative definitions in this file, in
5795 // TentativeDefinitions order. Generally, this record will be empty for
5796 // headers.
5797 AddLazyVectorDecls(Writer&: *this, Vec&: SemaRef.TentativeDefinitions);
5798
5799 // Writing all of the file scoped decls in this file.
5800 if (!isModule)
5801 AddLazyVectorDecls(Writer&: *this, Vec&: SemaRef.UnusedFileScopedDecls);
5802
5803 // Writing all of the delegating constructors we still need
5804 // to resolve.
5805 if (!isModule)
5806 AddLazyVectorDecls(Writer&: *this, Vec&: SemaRef.DelegatingCtorDecls);
5807
5808 // Writing all of the ext_vector declarations.
5809 AddLazyVectorDecls(Writer&: *this, Vec&: SemaRef.ExtVectorDecls);
5810
5811 // Writing all of the VTable uses information.
5812 if (!SemaRef.VTableUses.empty())
5813 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I)
5814 GetDeclRef(D: SemaRef.VTableUses[I].first);
5815
5816 // Writing all of the UnusedLocalTypedefNameCandidates in a deterministic
5817 // order.
5818 SmallVector<const TypedefNameDecl *, 4> UnusedLocalTypedefs;
5819 SemaRef.getSortedUnusedLocalTypedefNameCandidates(Sorted&: UnusedLocalTypedefs);
5820 for (const TypedefNameDecl *TD : UnusedLocalTypedefs)
5821 GetDeclRef(D: TD);
5822
5823 // Writing all of pending implicit instantiations.
5824 for (const auto &I : SemaRef.PendingInstantiations)
5825 GetDeclRef(D: I.first);
5826 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&
5827 "There are local ones at end of translation unit!");
5828
5829 // Writing some declaration references.
5830 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
5831 GetDeclRef(D: SemaRef.getStdNamespace());
5832 GetDeclRef(D: SemaRef.getStdBadAlloc());
5833 GetDeclRef(D: SemaRef.getStdAlignValT());
5834 }
5835
5836 if (Context.getcudaConfigureCallDecl() ||
5837 Context.getcudaGetParameterBufferDecl() ||
5838 Context.getcudaLaunchDeviceDecl()) {
5839 GetDeclRef(D: Context.getcudaConfigureCallDecl());
5840 GetDeclRef(D: Context.getcudaGetParameterBufferDecl());
5841 GetDeclRef(D: Context.getcudaLaunchDeviceDecl());
5842 }
5843
5844 // Writing all of the known namespaces.
5845 for (const auto &I : SemaRef.KnownNamespaces)
5846 if (!I.second)
5847 GetDeclRef(D: I.first);
5848
5849 // Writing all used, undefined objects that require definitions.
5850 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
5851 SemaRef.getUndefinedButUsed(Undefined);
5852 for (const auto &I : Undefined)
5853 GetDeclRef(D: I.first);
5854
5855 // Writing all delete-expressions that we would like to
5856 // analyze later in AST.
5857 if (!isModule)
5858 for (const auto &DeleteExprsInfo :
5859 SemaRef.getMismatchingDeleteExpressions())
5860 GetDeclRef(D: DeleteExprsInfo.first);
5861
5862 // Make sure visible decls, added to DeclContexts previously loaded from
5863 // an AST file, are registered for serialization. Likewise for template
5864 // specializations added to imported templates.
5865 for (const auto *I : DeclsToEmitEvenIfUnreferenced)
5866 GetDeclRef(D: I);
5867 DeclsToEmitEvenIfUnreferenced.clear();
5868
5869 // Make sure all decls associated with an identifier are registered for
5870 // serialization, if we're storing decls with identifiers.
5871 if (!WritingModule || !getLangOpts().CPlusPlus) {
5872 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
5873 for (const auto &ID : SemaRef.PP.getIdentifierTable()) {
5874 const IdentifierInfo *II = ID.second;
5875 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization() ||
5876 II->hasFETokenInfoChangedSinceDeserialization())
5877 IIs.push_back(Elt: II);
5878 }
5879 // Sort the identifiers to visit based on their name.
5880 llvm::sort(C&: IIs, Comp: llvm::deref<std::less<>>());
5881 const LangOptions &LangOpts = getLangOpts();
5882 for (const IdentifierInfo *II : IIs)
5883 for (NamedDecl *D : SemaRef.IdResolver.decls(Name: II))
5884 GetDeclRef(D: getDeclForLocalLookup(LangOpts, D));
5885 }
5886
5887 // Write all of the DeclsToCheckForDeferredDiags.
5888 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
5889 GetDeclRef(D);
5890
5891 // Write all classes that need to emit the vtable definitions if required.
5892 if (isWritingStdCXXNamedModules())
5893 for (CXXRecordDecl *RD : PendingEmittingVTables)
5894 GetDeclRef(D: RD);
5895 else
5896 PendingEmittingVTables.clear();
5897}
5898
5899void ASTWriter::WriteSpecialDeclRecords(Sema &SemaRef) {
5900 ASTContext &Context = SemaRef.Context;
5901
5902 bool isModule = WritingModule != nullptr;
5903
5904 // Write the record containing external, unnamed definitions.
5905 if (!EagerlyDeserializedDecls.empty())
5906 Stream.EmitRecord(Code: EAGERLY_DESERIALIZED_DECLS, Vals: EagerlyDeserializedDecls);
5907
5908 if (!ModularCodegenDecls.empty())
5909 Stream.EmitRecord(Code: MODULAR_CODEGEN_DECLS, Vals: ModularCodegenDecls);
5910
5911 // Write the record containing tentative definitions.
5912 RecordData TentativeDefinitions;
5913 AddLazyVectorEmiitedDecls(Writer&: *this, Vec&: SemaRef.TentativeDefinitions,
5914 Record&: TentativeDefinitions);
5915 if (!TentativeDefinitions.empty())
5916 Stream.EmitRecord(Code: TENTATIVE_DEFINITIONS, Vals: TentativeDefinitions);
5917
5918 // Write the record containing unused file scoped decls.
5919 RecordData UnusedFileScopedDecls;
5920 if (!isModule)
5921 AddLazyVectorEmiitedDecls(Writer&: *this, Vec&: SemaRef.UnusedFileScopedDecls,
5922 Record&: UnusedFileScopedDecls);
5923 if (!UnusedFileScopedDecls.empty())
5924 Stream.EmitRecord(Code: UNUSED_FILESCOPED_DECLS, Vals: UnusedFileScopedDecls);
5925
5926 // Write the record containing ext_vector type names.
5927 RecordData ExtVectorDecls;
5928 AddLazyVectorEmiitedDecls(Writer&: *this, Vec&: SemaRef.ExtVectorDecls, Record&: ExtVectorDecls);
5929 if (!ExtVectorDecls.empty())
5930 Stream.EmitRecord(Code: EXT_VECTOR_DECLS, Vals: ExtVectorDecls);
5931
5932 // Write the record containing VTable uses information.
5933 RecordData VTableUses;
5934 if (!SemaRef.VTableUses.empty()) {
5935 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
5936 CXXRecordDecl *D = SemaRef.VTableUses[I].first;
5937 if (!wasDeclEmitted(D))
5938 continue;
5939
5940 AddDeclRef(D, Record&: VTableUses);
5941 AddSourceLocation(Loc: SemaRef.VTableUses[I].second, Record&: VTableUses);
5942 VTableUses.push_back(Elt: SemaRef.VTablesUsed[D]);
5943 }
5944 Stream.EmitRecord(Code: VTABLE_USES, Vals: VTableUses);
5945 }
5946
5947 // Write the record containing potentially unused local typedefs, in a
5948 // deterministic order.
5949 RecordData UnusedLocalTypedefNameCandidates;
5950 SmallVector<const TypedefNameDecl *, 4> SortedCandidates;
5951 SemaRef.getSortedUnusedLocalTypedefNameCandidates(Sorted&: SortedCandidates);
5952 for (const TypedefNameDecl *TD : SortedCandidates)
5953 AddEmittedDeclRef(D: TD, Record&: UnusedLocalTypedefNameCandidates);
5954 if (!UnusedLocalTypedefNameCandidates.empty())
5955 Stream.EmitRecord(Code: UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5956 Vals: UnusedLocalTypedefNameCandidates);
5957
5958 if (!GeneratingReducedBMI) {
5959 // Write the record containing pending implicit instantiations.
5960 RecordData PendingInstantiations;
5961 for (const auto &I : SemaRef.PendingInstantiations) {
5962 if (!wasDeclEmitted(D: I.first))
5963 continue;
5964
5965 AddDeclRef(D: I.first, Record&: PendingInstantiations);
5966 AddSourceLocation(Loc: I.second, Record&: PendingInstantiations);
5967 }
5968 if (!PendingInstantiations.empty())
5969 Stream.EmitRecord(Code: PENDING_IMPLICIT_INSTANTIATIONS, Vals: PendingInstantiations);
5970 }
5971
5972 auto AddEmittedDeclRefOrZero = [this](RecordData &Refs, Decl *D) {
5973 if (!D || !wasDeclEmitted(D))
5974 Refs.push_back(Elt: 0);
5975 else
5976 AddDeclRef(D, Record&: Refs);
5977 };
5978
5979 // Write the record containing declaration references of Sema.
5980 RecordData SemaDeclRefs;
5981 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
5982 AddEmittedDeclRefOrZero(SemaDeclRefs, SemaRef.getStdNamespace());
5983 AddEmittedDeclRefOrZero(SemaDeclRefs, SemaRef.getStdBadAlloc());
5984 AddEmittedDeclRefOrZero(SemaDeclRefs, SemaRef.getStdAlignValT());
5985 }
5986 if (!SemaDeclRefs.empty())
5987 Stream.EmitRecord(Code: SEMA_DECL_REFS, Vals: SemaDeclRefs);
5988
5989 // Write the record containing decls to be checked for deferred diags.
5990 RecordData DeclsToCheckForDeferredDiags;
5991 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
5992 if (wasDeclEmitted(D))
5993 AddDeclRef(D, Record&: DeclsToCheckForDeferredDiags);
5994 if (!DeclsToCheckForDeferredDiags.empty())
5995 Stream.EmitRecord(Code: DECLS_TO_CHECK_FOR_DEFERRED_DIAGS,
5996 Vals: DeclsToCheckForDeferredDiags);
5997
5998 // Write the record containing CUDA-specific declaration references.
5999 RecordData CUDASpecialDeclRefs;
6000 if (auto *CudaCallDecl = Context.getcudaConfigureCallDecl(),
6001 *CudaGetParamDecl = Context.getcudaGetParameterBufferDecl(),
6002 *CudaLaunchDecl = Context.getcudaLaunchDeviceDecl();
6003 CudaCallDecl || CudaGetParamDecl || CudaLaunchDecl) {
6004 AddEmittedDeclRefOrZero(CUDASpecialDeclRefs, CudaCallDecl);
6005 AddEmittedDeclRefOrZero(CUDASpecialDeclRefs, CudaGetParamDecl);
6006 AddEmittedDeclRefOrZero(CUDASpecialDeclRefs, CudaLaunchDecl);
6007 Stream.EmitRecord(Code: CUDA_SPECIAL_DECL_REFS, Vals: CUDASpecialDeclRefs);
6008 }
6009
6010 // Write the delegating constructors.
6011 RecordData DelegatingCtorDecls;
6012 if (!isModule)
6013 AddLazyVectorEmiitedDecls(Writer&: *this, Vec&: SemaRef.DelegatingCtorDecls,
6014 Record&: DelegatingCtorDecls);
6015 if (!DelegatingCtorDecls.empty())
6016 Stream.EmitRecord(Code: DELEGATING_CTORS, Vals: DelegatingCtorDecls);
6017
6018 // Write the known namespaces.
6019 RecordData KnownNamespaces;
6020 for (const auto &I : SemaRef.KnownNamespaces) {
6021 if (!I.second && wasDeclEmitted(D: I.first))
6022 AddDeclRef(D: I.first, Record&: KnownNamespaces);
6023 }
6024 if (!KnownNamespaces.empty())
6025 Stream.EmitRecord(Code: KNOWN_NAMESPACES, Vals: KnownNamespaces);
6026
6027 // Write the undefined internal functions and variables, and inline functions.
6028 RecordData UndefinedButUsed;
6029 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
6030 SemaRef.getUndefinedButUsed(Undefined);
6031 for (const auto &I : Undefined) {
6032 if (!wasDeclEmitted(D: I.first))
6033 continue;
6034
6035 AddDeclRef(D: I.first, Record&: UndefinedButUsed);
6036 AddSourceLocation(Loc: I.second, Record&: UndefinedButUsed);
6037 }
6038 if (!UndefinedButUsed.empty())
6039 Stream.EmitRecord(Code: UNDEFINED_BUT_USED, Vals: UndefinedButUsed);
6040
6041 // Write all delete-expressions that we would like to
6042 // analyze later in AST.
6043 RecordData DeleteExprsToAnalyze;
6044 if (!isModule) {
6045 for (const auto &DeleteExprsInfo :
6046 SemaRef.getMismatchingDeleteExpressions()) {
6047 if (!wasDeclEmitted(D: DeleteExprsInfo.first))
6048 continue;
6049
6050 AddDeclRef(D: DeleteExprsInfo.first, Record&: DeleteExprsToAnalyze);
6051 DeleteExprsToAnalyze.push_back(Elt: DeleteExprsInfo.second.size());
6052 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
6053 AddSourceLocation(Loc: DeleteLoc.first, Record&: DeleteExprsToAnalyze);
6054 DeleteExprsToAnalyze.push_back(Elt: DeleteLoc.second);
6055 }
6056 }
6057 }
6058 if (!DeleteExprsToAnalyze.empty())
6059 Stream.EmitRecord(Code: DELETE_EXPRS_TO_ANALYZE, Vals: DeleteExprsToAnalyze);
6060
6061 RecordData VTablesToEmit;
6062 for (CXXRecordDecl *RD : PendingEmittingVTables) {
6063 if (!wasDeclEmitted(D: RD))
6064 continue;
6065
6066 AddDeclRef(D: RD, Record&: VTablesToEmit);
6067 }
6068
6069 if (!VTablesToEmit.empty())
6070 Stream.EmitRecord(Code: VTABLES_TO_EMIT, Vals: VTablesToEmit);
6071}
6072
6073ASTFileSignature ASTWriter::WriteASTCore(Sema *SemaPtr, StringRef isysroot,
6074 Module *WritingModule) {
6075 using namespace llvm;
6076
6077 bool isModule = WritingModule != nullptr;
6078
6079 // Make sure that the AST reader knows to finalize itself.
6080 if (Chain)
6081 Chain->finalizeForWriting();
6082
6083 // This needs to be done very early, since everything that writes
6084 // SourceLocations or FileIDs depends on it.
6085 computeNonAffectingInputFiles();
6086
6087 writeUnhashedControlBlock(PP&: *PP);
6088
6089 // Don't reuse type ID and Identifier ID from readers for C++ standard named
6090 // modules since we want to support no-transitive-change model for named
6091 // modules. The theory for no-transitive-change model is,
6092 // for a user of a named module, the user can only access the indirectly
6093 // imported decls via the directly imported module. So that it is possible to
6094 // control what matters to the users when writing the module. It would be
6095 // problematic if the users can reuse the type IDs and identifier IDs from
6096 // indirectly imported modules arbitrarily. So we choose to clear these ID
6097 // here.
6098 if (isWritingStdCXXNamedModules()) {
6099 TypeIdxs.clear();
6100 IdentifierIDs.clear();
6101 }
6102
6103 // Look for any identifiers that were named while processing the
6104 // headers, but are otherwise not needed. We add these to the hash
6105 // table to enable checking of the predefines buffer in the case
6106 // where the user adds new macro definitions when building the AST
6107 // file.
6108 //
6109 // We do this before emitting any Decl and Types to make sure the
6110 // Identifier ID is stable.
6111 SmallVector<const IdentifierInfo *, 128> IIs;
6112 for (const auto &ID : PP->getIdentifierTable())
6113 if (IsInterestingNonMacroIdentifier(II: ID.second, Writer&: *this))
6114 IIs.push_back(Elt: ID.second);
6115 // Sort the identifiers lexicographically before getting the references so
6116 // that their order is stable.
6117 llvm::sort(C&: IIs, Comp: llvm::deref<std::less<>>());
6118 for (const IdentifierInfo *II : IIs)
6119 getIdentifierRef(II);
6120
6121 // Write the set of weak, undeclared identifiers. We always write the
6122 // entire table, since later PCH files in a PCH chain are only interested in
6123 // the results at the end of the chain.
6124 RecordData WeakUndeclaredIdentifiers;
6125 if (SemaPtr) {
6126 for (const auto &WeakUndeclaredIdentifierList :
6127 SemaPtr->WeakUndeclaredIdentifiers) {
6128 const IdentifierInfo *const II = WeakUndeclaredIdentifierList.first;
6129 for (const auto &WI : WeakUndeclaredIdentifierList.second) {
6130 AddIdentifierRef(II, Record&: WeakUndeclaredIdentifiers);
6131 AddIdentifierRef(II: WI.getAlias(), Record&: WeakUndeclaredIdentifiers);
6132 AddSourceLocation(Loc: WI.getLocation(), Record&: WeakUndeclaredIdentifiers);
6133 }
6134 }
6135 }
6136
6137 // Write the set of #pragma redefine_extname'd, undeclared identifiers. We
6138 // always write the entire table, since later PCH files in a PCH chain are
6139 // only interested in the results at the end of the chain.
6140 RecordData ExtnameUndeclaredIdentifiers;
6141 if (SemaPtr && !isWritingStdCXXNamedModules()) {
6142 ASTContext &Context = SemaPtr->Context;
6143 ASTRecordWriter ExtnameUndeclaredIdentifiersWriter(
6144 Context, *this, ExtnameUndeclaredIdentifiers);
6145 for (const auto &[II, AL] : SemaPtr->ExtnameUndeclaredIdentifiers) {
6146 ExtnameUndeclaredIdentifiersWriter.AddIdentifierRef(II);
6147 ExtnameUndeclaredIdentifiersWriter.AddIdentifierRef(
6148 II: &Context.Idents.get(Name: AL->getLabel()));
6149 ExtnameUndeclaredIdentifiersWriter.AddSourceLocation(Loc: AL->getLocation());
6150 }
6151 }
6152
6153 // Form the record of special types.
6154 RecordData SpecialTypes;
6155 if (SemaPtr) {
6156 ASTContext &Context = SemaPtr->Context;
6157 AddTypeRef(Context, T: Context.getRawCFConstantStringType(), Record&: SpecialTypes);
6158 AddTypeRef(Context, T: Context.getFILEType(), Record&: SpecialTypes);
6159 AddTypeRef(Context, T: Context.getjmp_bufType(), Record&: SpecialTypes);
6160 AddTypeRef(Context, T: Context.getsigjmp_bufType(), Record&: SpecialTypes);
6161 AddTypeRef(Context, T: Context.ObjCIdRedefinitionType, Record&: SpecialTypes);
6162 AddTypeRef(Context, T: Context.ObjCClassRedefinitionType, Record&: SpecialTypes);
6163 AddTypeRef(Context, T: Context.ObjCSelRedefinitionType, Record&: SpecialTypes);
6164 AddTypeRef(Context, T: Context.getucontext_tType(), Record&: SpecialTypes);
6165 }
6166
6167 if (SemaPtr)
6168 PrepareWritingSpecialDecls(SemaRef&: *SemaPtr);
6169
6170 // Write the control block
6171 WriteControlBlock(PP&: *PP, isysroot);
6172
6173 // Write the remaining AST contents.
6174 Stream.FlushToWord();
6175 ASTBlockRange.first = Stream.GetCurrentBitNo() >> 3;
6176 Stream.EnterSubblock(BlockID: AST_BLOCK_ID, CodeLen: 5);
6177 ASTBlockStartOffset = Stream.GetCurrentBitNo();
6178
6179 // This is so that older clang versions, before the introduction
6180 // of the control block, can read and reject the newer PCH format.
6181 {
6182 RecordData Record = {VERSION_MAJOR};
6183 Stream.EmitRecord(Code: METADATA_OLD_FORMAT, Vals: Record);
6184 }
6185
6186 // For method pool in the module, if it contains an entry for a selector,
6187 // the entry should be complete, containing everything introduced by that
6188 // module and all modules it imports. It's possible that the entry is out of
6189 // date, so we need to pull in the new content here.
6190
6191 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
6192 // safe, we copy all selectors out.
6193 if (SemaPtr) {
6194 llvm::SmallVector<Selector, 256> AllSelectors;
6195 for (auto &SelectorAndID : SelectorIDs)
6196 AllSelectors.push_back(Elt: SelectorAndID.first);
6197 for (auto &Selector : AllSelectors)
6198 SemaPtr->ObjC().updateOutOfDateSelector(Sel: Selector);
6199 }
6200
6201 if (Chain) {
6202 // Write the mapping information describing our module dependencies and how
6203 // each of those modules were mapped into our own offset/ID space, so that
6204 // the reader can build the appropriate mapping to its own offset/ID space.
6205 // The map consists solely of a blob with the following format:
6206 // *(module-kind:i8
6207 // module-name-len:i16 module-name:len*i8
6208 // source-location-offset:i32
6209 // identifier-id:i32
6210 // preprocessed-entity-id:i32
6211 // macro-definition-id:i32
6212 // submodule-id:i32
6213 // selector-id:i32
6214 // declaration-id:i32
6215 // c++-base-specifiers-id:i32
6216 // type-id:i32)
6217 //
6218 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule,
6219 // MK_ExplicitModule or MK_ImplicitModule, then the module-name is the
6220 // module name. Otherwise, it is the module file name.
6221 auto Abbrev = std::make_shared<BitCodeAbbrev>();
6222 Abbrev->Add(OpInfo: BitCodeAbbrevOp(MODULE_OFFSET_MAP));
6223 Abbrev->Add(OpInfo: BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
6224 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abbrev));
6225 SmallString<2048> Buffer;
6226 {
6227 llvm::raw_svector_ostream Out(Buffer);
6228 for (ModuleFile &M : Chain->ModuleMgr) {
6229 using namespace llvm::support;
6230
6231 endian::Writer LE(Out, llvm::endianness::little);
6232 LE.write<uint8_t>(Val: static_cast<uint8_t>(M.Kind));
6233 // FIXME: Storing a PCH's name (M.FileName) as a string does not handle
6234 // relocatable files. We probably should call
6235 // `PreparePathForOutput(M.FileName)` to properly support relocatable
6236 // PCHs.
6237 StringRef Name = M.isModule() ? M.ModuleName : M.FileName.str();
6238 LE.write<uint16_t>(Val: Name.size());
6239 Out.write(Ptr: Name.data(), Size: Name.size());
6240
6241 // Note: if a base ID was uint max, it would not be possible to load
6242 // another module after it or have more than one entity inside it.
6243 uint32_t None = std::numeric_limits<uint32_t>::max();
6244
6245 auto writeBaseIDOrNone = [&](auto BaseID, bool ShouldWrite) {
6246 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high");
6247 if (ShouldWrite)
6248 LE.write<uint32_t>(BaseID);
6249 else
6250 LE.write<uint32_t>(Val: None);
6251 };
6252
6253 // These values should be unique within a chain, since they will be read
6254 // as keys into ContinuousRangeMaps.
6255 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
6256 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
6257 }
6258 }
6259 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
6260 Stream.EmitRecordWithBlob(Abbrev: ModuleOffsetMapAbbrev, Vals: Record,
6261 BlobData: Buffer.data(), BlobLen: Buffer.size());
6262 }
6263
6264 if (SemaPtr)
6265 WriteDeclAndTypes(Context&: SemaPtr->Context);
6266
6267 WriteFileDeclIDsMap();
6268 WriteSourceManagerBlock(SourceMgr&: PP->getSourceManager());
6269 if (SemaPtr)
6270 WriteComments(Context&: SemaPtr->Context);
6271 WritePreprocessor(PP: *PP, IsModule: isModule);
6272 WriteHeaderSearch(HS: PP->getHeaderSearchInfo());
6273 if (SemaPtr) {
6274 WriteSelectors(SemaRef&: *SemaPtr);
6275 WriteReferencedSelectorsPool(SemaRef&: *SemaPtr);
6276 WriteLateParsedTemplates(SemaRef&: *SemaPtr);
6277 }
6278 WriteIdentifierTable(PP&: *PP, IdResolver: SemaPtr ? &SemaPtr->IdResolver : nullptr, IsModule: isModule);
6279 if (SemaPtr) {
6280 WriteFPPragmaOptions(Opts: SemaPtr->CurFPFeatureOverrides());
6281 WriteOpenCLExtensions(SemaRef&: *SemaPtr);
6282 WriteCUDAPragmas(SemaRef&: *SemaPtr);
6283 WriteRISCVIntrinsicPragmas(SemaRef&: *SemaPtr);
6284 }
6285
6286 // If we're emitting a module, write out the submodule information.
6287 if (WritingModule)
6288 WriteSubmodules(WritingModule, Context: SemaPtr ? &SemaPtr->Context : nullptr);
6289
6290 Stream.EmitRecord(Code: SPECIAL_TYPES, Vals: SpecialTypes);
6291
6292 if (SemaPtr)
6293 WriteSpecialDeclRecords(SemaRef&: *SemaPtr);
6294
6295 // Write the record containing weak undeclared identifiers.
6296 if (!WeakUndeclaredIdentifiers.empty())
6297 Stream.EmitRecord(Code: WEAK_UNDECLARED_IDENTIFIERS,
6298 Vals: WeakUndeclaredIdentifiers);
6299
6300 // Write the record containing #pragma redefine_extname'd undeclared
6301 // identifiers.
6302 if (!ExtnameUndeclaredIdentifiers.empty())
6303 Stream.EmitRecord(Code: EXTNAME_UNDECLARED_IDENTIFIERS,
6304 Vals: ExtnameUndeclaredIdentifiers);
6305
6306 if (!WritingModule) {
6307 // Write the submodules that were imported, if any.
6308 struct ModuleInfo {
6309 uint64_t ID;
6310 Module *M;
6311 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
6312 };
6313 llvm::SmallVector<ModuleInfo, 64> Imports;
6314 if (SemaPtr) {
6315 for (const auto *I : SemaPtr->Context.local_imports()) {
6316 assert(SubmoduleIDs.contains(I->getImportedModule()));
6317 Imports.push_back(Elt: ModuleInfo(SubmoduleIDs[I->getImportedModule()],
6318 I->getImportedModule()));
6319 }
6320 }
6321
6322 if (!Imports.empty()) {
6323 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
6324 return A.ID < B.ID;
6325 };
6326 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
6327 return A.ID == B.ID;
6328 };
6329
6330 // Sort and deduplicate module IDs.
6331 llvm::sort(C&: Imports, Comp: Cmp);
6332 Imports.erase(CS: llvm::unique(R&: Imports, P: Eq), CE: Imports.end());
6333
6334 RecordData ImportedModules;
6335 for (const auto &Import : Imports) {
6336 ImportedModules.push_back(Elt: Import.ID);
6337 // FIXME: If the module has macros imported then later has declarations
6338 // imported, this location won't be the right one as a location for the
6339 // declaration imports.
6340 AddSourceLocation(Loc: PP->getModuleImportLoc(M: Import.M), Record&: ImportedModules);
6341 }
6342
6343 Stream.EmitRecord(Code: IMPORTED_MODULES, Vals: ImportedModules);
6344 }
6345 }
6346
6347 WriteObjCCategories();
6348 if (SemaPtr) {
6349 if (!WritingModule) {
6350 WriteOptimizePragmaOptions(SemaRef&: *SemaPtr);
6351 WriteMSStructPragmaOptions(SemaRef&: *SemaPtr);
6352 WriteMSPointersToMembersPragmaOptions(SemaRef&: *SemaPtr);
6353 }
6354 WritePackPragmaOptions(SemaRef&: *SemaPtr);
6355 WriteFloatControlPragmaOptions(SemaRef&: *SemaPtr);
6356 WriteDeclsWithEffectsToVerify(SemaRef&: *SemaPtr);
6357 }
6358
6359 // Some simple statistics
6360 RecordData::value_type Record[] = {NumStatements,
6361 NumMacros,
6362 NumLexicalDeclContexts,
6363 NumVisibleDeclContexts,
6364 NumModuleLocalDeclContexts,
6365 NumTULocalDeclContexts};
6366 Stream.EmitRecord(Code: STATISTICS, Vals: Record);
6367 Stream.ExitBlock();
6368 Stream.FlushToWord();
6369 ASTBlockRange.second = Stream.GetCurrentBitNo() >> 3;
6370
6371 // Write the module file extension blocks.
6372 if (SemaPtr)
6373 for (const auto &ExtWriter : ModuleFileExtensionWriters)
6374 WriteModuleFileExtension(SemaRef&: *SemaPtr, Writer&: *ExtWriter);
6375
6376 return backpatchSignature();
6377}
6378
6379// Add update records for all mangling numbers and static local numbers.
6380// These aren't really update records, but this is a convenient way of
6381// tagging this rare extra data onto the declarations.
6382void ASTWriter::AddedManglingNumber(const Decl *D, unsigned Number) {
6383 if (D->isFromASTFile())
6384 return;
6385
6386 DeclUpdates[D].push_back(Elt: DeclUpdate(DeclUpdateKind::ManglingNumber, Number));
6387}
6388void ASTWriter::AddedStaticLocalNumbers(const Decl *D, unsigned Number) {
6389 if (D->isFromASTFile())
6390 return;
6391
6392 DeclUpdates[D].push_back(
6393 Elt: DeclUpdate(DeclUpdateKind::StaticLocalNumber, Number));
6394}
6395
6396void ASTWriter::AddedAnonymousNamespace(const TranslationUnitDecl *TU,
6397 NamespaceDecl *AnonNamespace) {
6398 // If the translation unit has an anonymous namespace, and we don't already
6399 // have an update block for it, write it as an update block.
6400 // FIXME: Why do we not do this if there's already an update block?
6401 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
6402 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
6403 if (Record.empty())
6404 Record.push_back(
6405 Elt: DeclUpdate(DeclUpdateKind::CXXAddedAnonymousNamespace, NS));
6406 }
6407}
6408
6409void ASTWriter::WriteDeclAndTypes(ASTContext &Context) {
6410 // Keep writing types, declarations, and declaration update records
6411 // until we've emitted all of them.
6412 RecordData DeclUpdatesOffsetsRecord;
6413 Stream.EnterSubblock(BlockID: DECLTYPES_BLOCK_ID, /*bits for abbreviations*/ CodeLen: 6);
6414 DeclTypesBlockStartOffset = Stream.GetCurrentBitNo();
6415 WriteTypeAbbrevs();
6416 WriteDeclAbbrevs();
6417 do {
6418 WriteDeclUpdatesBlocks(Context, OffsetsRecord&: DeclUpdatesOffsetsRecord);
6419 while (!DeclTypesToEmit.empty()) {
6420 DeclOrType DOT = DeclTypesToEmit.front();
6421 DeclTypesToEmit.pop();
6422 if (DOT.isType())
6423 WriteType(Context, T: DOT.getType());
6424 else
6425 WriteDecl(Context, D: DOT.getDecl());
6426 }
6427 } while (!DeclUpdates.empty());
6428
6429 DoneWritingDeclsAndTypes = true;
6430
6431 // DelayedNamespace is only meaningful in reduced BMI.
6432 // See the comments of DelayedNamespace for details.
6433 assert(DelayedNamespace.empty() || GeneratingReducedBMI);
6434 RecordData DelayedNamespaceRecord;
6435 for (NamespaceDecl *NS : DelayedNamespace) {
6436 LookupBlockOffsets Offsets;
6437
6438 Offsets.LexicalOffset = WriteDeclContextLexicalBlock(Context, DC: NS);
6439 WriteDeclContextVisibleBlock(Context, DC: NS, Offsets);
6440
6441 if (Offsets.LexicalOffset)
6442 Offsets.LexicalOffset -= DeclTypesBlockStartOffset;
6443
6444 // Write the offset relative to current block.
6445 if (Offsets.VisibleOffset)
6446 Offsets.VisibleOffset -= DeclTypesBlockStartOffset;
6447
6448 if (Offsets.ModuleLocalOffset)
6449 Offsets.ModuleLocalOffset -= DeclTypesBlockStartOffset;
6450
6451 if (Offsets.TULocalOffset)
6452 Offsets.TULocalOffset -= DeclTypesBlockStartOffset;
6453
6454 AddDeclRef(D: NS, Record&: DelayedNamespaceRecord);
6455 AddLookupOffsets(Offsets, Record&: DelayedNamespaceRecord);
6456 }
6457
6458 // The process of writing lexical and visible block for delayed namespace
6459 // shouldn't introduce any new decls, types or update to emit.
6460 assert(DeclTypesToEmit.empty());
6461 assert(DeclUpdates.empty());
6462
6463 Stream.ExitBlock();
6464
6465 // These things can only be done once we've written out decls and types.
6466 WriteTypeDeclOffsets();
6467 if (!DeclUpdatesOffsetsRecord.empty())
6468 Stream.EmitRecord(Code: DECL_UPDATE_OFFSETS, Vals: DeclUpdatesOffsetsRecord);
6469
6470 if (!DelayedNamespaceRecord.empty())
6471 Stream.EmitRecord(Code: DELAYED_NAMESPACE_LEXICAL_VISIBLE_RECORD,
6472 Vals: DelayedNamespaceRecord);
6473
6474 if (!RelatedDeclsMap.empty()) {
6475 // TODO: on disk hash table for related decls mapping might be more
6476 // efficent becuase it allows lazy deserialization.
6477 RecordData RelatedDeclsMapRecord;
6478 for (const auto &Pair : RelatedDeclsMap) {
6479 RelatedDeclsMapRecord.push_back(Elt: Pair.first.getRawValue());
6480 RelatedDeclsMapRecord.push_back(Elt: Pair.second.size());
6481 for (const auto &Lambda : Pair.second)
6482 RelatedDeclsMapRecord.push_back(Elt: Lambda.getRawValue());
6483 }
6484
6485 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
6486 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(RELATED_DECLS_MAP));
6487 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Array));
6488 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
6489 unsigned FunctionToLambdaMapAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6490 Stream.EmitRecord(Code: RELATED_DECLS_MAP, Vals: RelatedDeclsMapRecord,
6491 Abbrev: FunctionToLambdaMapAbbrev);
6492 }
6493
6494 if (!SpecializationsUpdates.empty()) {
6495 WriteSpecializationsUpdates(/*IsPartial=*/false);
6496 SpecializationsUpdates.clear();
6497 }
6498
6499 if (!PartialSpecializationsUpdates.empty()) {
6500 WriteSpecializationsUpdates(/*IsPartial=*/true);
6501 PartialSpecializationsUpdates.clear();
6502 }
6503
6504 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
6505 // Create a lexical update block containing all of the declarations in the
6506 // translation unit that do not come from other AST files.
6507 SmallVector<DeclID, 128> NewGlobalKindDeclPairs;
6508 for (const auto *D : TU->noload_decls()) {
6509 if (D->isFromASTFile())
6510 continue;
6511
6512 // In reduced BMI, skip unreached declarations.
6513 if (!wasDeclEmitted(D))
6514 continue;
6515
6516 NewGlobalKindDeclPairs.push_back(Elt: D->getKind());
6517 NewGlobalKindDeclPairs.push_back(Elt: GetDeclRef(D).getRawValue());
6518 }
6519
6520 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
6521 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
6522 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
6523 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6524
6525 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
6526 Stream.EmitRecordWithBlob(Abbrev: TuUpdateLexicalAbbrev, Vals: Record,
6527 Blob: bytes(v: NewGlobalKindDeclPairs));
6528
6529 Abv = std::make_shared<llvm::BitCodeAbbrev>();
6530 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
6531 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
6532 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
6533 UpdateVisibleAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6534
6535 Abv = std::make_shared<llvm::BitCodeAbbrev>();
6536 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(UPDATE_MODULE_LOCAL_VISIBLE));
6537 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
6538 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
6539 ModuleLocalUpdateVisibleAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6540
6541 Abv = std::make_shared<llvm::BitCodeAbbrev>();
6542 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(UPDATE_TU_LOCAL_VISIBLE));
6543 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
6544 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
6545 TULocalUpdateVisibleAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6546
6547 // And a visible updates block for the translation unit.
6548 WriteDeclContextVisibleUpdate(Context, DC: TU);
6549
6550 // If we have any extern "C" names, write out a visible update for them.
6551 if (Context.ExternCContext)
6552 WriteDeclContextVisibleUpdate(Context, DC: Context.ExternCContext);
6553
6554 // Write the visible updates to DeclContexts.
6555 for (auto *DC : UpdatedDeclContexts)
6556 WriteDeclContextVisibleUpdate(Context, DC);
6557}
6558
6559void ASTWriter::WriteSpecializationsUpdates(bool IsPartial) {
6560 auto RecordType = IsPartial ? CXX_ADDED_TEMPLATE_PARTIAL_SPECIALIZATION
6561 : CXX_ADDED_TEMPLATE_SPECIALIZATION;
6562
6563 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
6564 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(RecordType));
6565 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
6566 Abv->Add(OpInfo: llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
6567 auto UpdateSpecializationAbbrev = Stream.EmitAbbrev(Abbv: std::move(Abv));
6568
6569 auto &SpecUpdates =
6570 IsPartial ? PartialSpecializationsUpdates : SpecializationsUpdates;
6571 for (auto &SpecializationUpdate : SpecUpdates) {
6572 const NamedDecl *D = SpecializationUpdate.first;
6573
6574 llvm::SmallString<4096> LookupTable;
6575 GenerateSpecializationInfoLookupTable(D, Specializations&: SpecializationUpdate.second,
6576 LookupTable, IsPartial);
6577
6578 // Write the lookup table
6579 RecordData::value_type Record[] = {
6580 static_cast<RecordData::value_type>(RecordType),
6581 getDeclID(D).getRawValue()};
6582 Stream.EmitRecordWithBlob(Abbrev: UpdateSpecializationAbbrev, Vals: Record, Blob: LookupTable);
6583 }
6584}
6585
6586void ASTWriter::WriteDeclUpdatesBlocks(ASTContext &Context,
6587 RecordDataImpl &OffsetsRecord) {
6588 if (DeclUpdates.empty())
6589 return;
6590
6591 DeclUpdateMap LocalUpdates;
6592 LocalUpdates.swap(RHS&: DeclUpdates);
6593
6594 for (auto &DeclUpdate : LocalUpdates) {
6595 const Decl *D = DeclUpdate.first;
6596
6597 bool HasUpdatedBody = false;
6598 bool HasAddedVarDefinition = false;
6599 RecordData RecordData;
6600 ASTRecordWriter Record(Context, *this, RecordData);
6601 for (auto &Update : DeclUpdate.second) {
6602 DeclUpdateKind Kind = Update.getKind();
6603
6604 // An updated body is emitted last, so that the reader doesn't need
6605 // to skip over the lazy body to reach statements for other records.
6606 if (Kind == DeclUpdateKind::CXXAddedFunctionDefinition)
6607 HasUpdatedBody = true;
6608 else if (Kind == DeclUpdateKind::CXXAddedVarDefinition)
6609 HasAddedVarDefinition = true;
6610 else
6611 Record.push_back(N: llvm::to_underlying(E: Kind));
6612
6613 switch (Kind) {
6614 case DeclUpdateKind::CXXAddedImplicitMember:
6615 case DeclUpdateKind::CXXAddedAnonymousNamespace:
6616 assert(Update.getDecl() && "no decl to add?");
6617 Record.AddDeclRef(D: Update.getDecl());
6618 break;
6619 case DeclUpdateKind::CXXAddedFunctionDefinition:
6620 case DeclUpdateKind::CXXAddedVarDefinition:
6621 break;
6622
6623 case DeclUpdateKind::CXXPointOfInstantiation:
6624 // FIXME: Do we need to also save the template specialization kind here?
6625 Record.AddSourceLocation(Loc: Update.getLoc());
6626 break;
6627
6628 case DeclUpdateKind::CXXInstantiatedDefaultArgument:
6629 Record.writeStmtRef(
6630 S: cast<ParmVarDecl>(Val: Update.getDecl())->getDefaultArg());
6631 break;
6632
6633 case DeclUpdateKind::CXXInstantiatedDefaultMemberInitializer:
6634 Record.AddStmt(
6635 S: cast<FieldDecl>(Val: Update.getDecl())->getInClassInitializer());
6636 break;
6637
6638 case DeclUpdateKind::CXXInstantiatedClassDefinition: {
6639 auto *RD = cast<CXXRecordDecl>(Val: D);
6640 UpdatedDeclContexts.insert(X: RD->getPrimaryContext());
6641 Record.push_back(N: RD->isParamDestroyedInCallee());
6642 Record.push_back(N: llvm::to_underlying(E: RD->getArgPassingRestrictions()));
6643 Record.AddCXXDefinitionData(D: RD);
6644 Record.AddOffset(BitOffset: WriteDeclContextLexicalBlock(Context, DC: RD));
6645
6646 // This state is sometimes updated by template instantiation, when we
6647 // switch from the specialization referring to the template declaration
6648 // to it referring to the template definition.
6649 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
6650 Record.push_back(N: MSInfo->getTemplateSpecializationKind());
6651 Record.AddSourceLocation(Loc: MSInfo->getPointOfInstantiation());
6652 } else {
6653 auto *Spec = cast<ClassTemplateSpecializationDecl>(Val: RD);
6654 Record.push_back(N: Spec->getTemplateSpecializationKind());
6655 Record.AddSourceLocation(Loc: Spec->getPointOfInstantiation());
6656
6657 // The instantiation might have been resolved to a partial
6658 // specialization. If so, record which one.
6659 auto From = Spec->getInstantiatedFrom();
6660 if (auto PartialSpec =
6661 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
6662 Record.push_back(N: true);
6663 Record.AddDeclRef(D: PartialSpec);
6664 Record.AddTemplateArgumentList(
6665 TemplateArgs: &Spec->getTemplateInstantiationArgs());
6666 } else {
6667 Record.push_back(N: false);
6668 }
6669 }
6670 Record.push_back(N: llvm::to_underlying(E: RD->getTagKind()));
6671 Record.AddSourceLocation(Loc: RD->getLocation());
6672 Record.AddSourceLocation(Loc: RD->getBeginLoc());
6673 Record.AddSourceRange(Range: RD->getBraceRange());
6674
6675 // Instantiation may change attributes; write them all out afresh.
6676 Record.push_back(N: D->hasAttrs());
6677 if (D->hasAttrs())
6678 Record.AddAttributes(Attrs: D->getAttrs());
6679
6680 // FIXME: Ensure we don't get here for explicit instantiations.
6681 break;
6682 }
6683
6684 case DeclUpdateKind::CXXResolvedDtorDelete:
6685 Record.AddDeclRef(D: Update.getDecl());
6686 Record.AddStmt(S: cast<CXXDestructorDecl>(Val: D)->getOperatorDeleteThisArg());
6687 break;
6688
6689 case DeclUpdateKind::CXXResolvedDtorGlobDelete:
6690 Record.AddDeclRef(D: Update.getDecl());
6691 break;
6692
6693 case DeclUpdateKind::CXXResolvedDtorArrayDelete:
6694 Record.AddDeclRef(D: Update.getDecl());
6695 break;
6696
6697 case DeclUpdateKind::CXXResolvedDtorGlobArrayDelete:
6698 Record.AddDeclRef(D: Update.getDecl());
6699 break;
6700
6701 case DeclUpdateKind::CXXResolvedExceptionSpec: {
6702 auto prototype =
6703 cast<FunctionDecl>(Val: D)->getType()->castAs<FunctionProtoType>();
6704 Record.writeExceptionSpecInfo(esi: prototype->getExceptionSpecInfo());
6705 break;
6706 }
6707
6708 case DeclUpdateKind::CXXDeducedReturnType:
6709 Record.push_back(N: GetOrCreateTypeID(Context, T: Update.getType()));
6710 break;
6711
6712 case DeclUpdateKind::DeclMarkedUsed:
6713 break;
6714
6715 case DeclUpdateKind::ManglingNumber:
6716 case DeclUpdateKind::StaticLocalNumber:
6717 Record.push_back(N: Update.getNumber());
6718 break;
6719
6720 case DeclUpdateKind::DeclMarkedOpenMPThreadPrivate:
6721 Record.AddSourceRange(
6722 Range: D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
6723 break;
6724
6725 case DeclUpdateKind::DeclMarkedOpenMPAllocate: {
6726 auto *A = D->getAttr<OMPAllocateDeclAttr>();
6727 Record.push_back(N: A->getAllocatorType());
6728 Record.AddStmt(S: A->getAllocator());
6729 Record.AddStmt(S: A->getAlignment());
6730 Record.AddSourceRange(Range: A->getRange());
6731 break;
6732 }
6733
6734 case DeclUpdateKind::DeclMarkedOpenMPIndirectCall:
6735 Record.AddSourceRange(
6736 Range: D->getAttr<OMPTargetIndirectCallAttr>()->getRange());
6737 break;
6738
6739 case DeclUpdateKind::DeclMarkedOpenMPDeclareTarget:
6740 Record.push_back(N: D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
6741 Record.AddSourceRange(
6742 Range: D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
6743 break;
6744
6745 case DeclUpdateKind::DeclExported:
6746 Record.push_back(N: getSubmoduleID(Mod: Update.getModule()));
6747 break;
6748
6749 case DeclUpdateKind::AddedAttrToRecord:
6750 Record.AddAttributes(Attrs: llvm::ArrayRef(Update.getAttr()));
6751 break;
6752 }
6753 }
6754
6755 // Add a trailing update record, if any. These must go last because we
6756 // lazily load their attached statement.
6757 if (!GeneratingReducedBMI || !CanElideDeclDef(D)) {
6758 if (HasUpdatedBody) {
6759 const auto *Def = cast<FunctionDecl>(Val: D);
6760 Record.push_back(
6761 N: llvm::to_underlying(E: DeclUpdateKind::CXXAddedFunctionDefinition));
6762 Record.push_back(N: Def->isInlined());
6763 Record.AddSourceLocation(Loc: Def->getInnerLocStart());
6764 Record.AddFunctionDefinition(FD: Def);
6765 } else if (HasAddedVarDefinition) {
6766 const auto *VD = cast<VarDecl>(Val: D);
6767 Record.push_back(
6768 N: llvm::to_underlying(E: DeclUpdateKind::CXXAddedVarDefinition));
6769 Record.push_back(N: VD->isInline());
6770 Record.push_back(N: VD->isInlineSpecified());
6771 Record.AddVarDeclInit(VD);
6772 }
6773 }
6774
6775 AddDeclRef(D, Record&: OffsetsRecord);
6776 OffsetsRecord.push_back(Elt: Record.Emit(Code: DECL_UPDATES));
6777 }
6778}
6779
6780void ASTWriter::AddAlignPackInfo(const Sema::AlignPackInfo &Info,
6781 RecordDataImpl &Record) {
6782 uint32_t Raw = Sema::AlignPackInfo::getRawEncoding(Info);
6783 Record.push_back(Elt: Raw);
6784}
6785
6786FileID ASTWriter::getAdjustedFileID(FileID FID) const {
6787 if (FID.isInvalid() || PP->getSourceManager().isLoadedFileID(FID) ||
6788 NonAffectingFileIDs.empty())
6789 return FID;
6790 auto It = llvm::lower_bound(Range: NonAffectingFileIDs, Value&: FID);
6791 unsigned Idx = std::distance(first: NonAffectingFileIDs.begin(), last: It);
6792 unsigned Offset = NonAffectingFileIDAdjustments[Idx];
6793 return FileID::get(V: FID.getOpaqueValue() - Offset);
6794}
6795
6796unsigned ASTWriter::getAdjustedNumCreatedFIDs(FileID FID) const {
6797 unsigned NumCreatedFIDs = PP->getSourceManager()
6798 .getLocalSLocEntry(Index: FID.ID)
6799 .getFile()
6800 .NumCreatedFIDs;
6801
6802 unsigned AdjustedNumCreatedFIDs = 0;
6803 for (unsigned I = FID.ID, N = I + NumCreatedFIDs; I != N; ++I)
6804 if (IsSLocAffecting[I])
6805 ++AdjustedNumCreatedFIDs;
6806 return AdjustedNumCreatedFIDs;
6807}
6808
6809SourceLocation ASTWriter::getAdjustedLocation(SourceLocation Loc) const {
6810 if (Loc.isInvalid())
6811 return Loc;
6812 return Loc.getLocWithOffset(Offset: -getAdjustment(Offset: Loc.getOffset()));
6813}
6814
6815SourceRange ASTWriter::getAdjustedRange(SourceRange Range) const {
6816 return SourceRange(getAdjustedLocation(Loc: Range.getBegin()),
6817 getAdjustedLocation(Loc: Range.getEnd()));
6818}
6819
6820SourceLocation::UIntTy
6821ASTWriter::getAdjustedOffset(SourceLocation::UIntTy Offset) const {
6822 return Offset - getAdjustment(Offset);
6823}
6824
6825SourceLocation::UIntTy
6826ASTWriter::getAdjustment(SourceLocation::UIntTy Offset) const {
6827 if (NonAffectingRanges.empty())
6828 return 0;
6829
6830 if (PP->getSourceManager().isLoadedOffset(SLocOffset: Offset))
6831 return 0;
6832
6833 if (Offset > NonAffectingRanges.back().getEnd().getOffset())
6834 return NonAffectingOffsetAdjustments.back();
6835
6836 if (Offset < NonAffectingRanges.front().getBegin().getOffset())
6837 return 0;
6838
6839 auto Contains = [](const SourceRange &Range, SourceLocation::UIntTy Offset) {
6840 return Range.getEnd().getOffset() < Offset;
6841 };
6842
6843 auto It = llvm::lower_bound(Range: NonAffectingRanges, Value&: Offset, C: Contains);
6844 unsigned Idx = std::distance(first: NonAffectingRanges.begin(), last: It);
6845 return NonAffectingOffsetAdjustments[Idx];
6846}
6847
6848void ASTWriter::AddFileID(FileID FID, RecordDataImpl &Record) {
6849 Record.push_back(Elt: getAdjustedFileID(FID).getOpaqueValue());
6850}
6851
6852SourceLocationEncoding::RawLocEncoding
6853ASTWriter::getRawSourceLocationEncoding(SourceLocation Loc) {
6854 SourceLocation::UIntTy BaseOffset = 0;
6855 unsigned ModuleFileIndex = 0;
6856
6857 // See SourceLocationEncoding.h for the encoding details.
6858 if (PP->getSourceManager().isLoadedSourceLocation(Loc) && Loc.isValid()) {
6859 assert(getChain());
6860 auto SLocMapI = getChain()->GlobalSLocOffsetMap.find(
6861 K: SourceManager::MaxLoadedOffset - Loc.getOffset() - 1);
6862 assert(SLocMapI != getChain()->GlobalSLocOffsetMap.end() &&
6863 "Corrupted global sloc offset map");
6864 ModuleFile *F = SLocMapI->second;
6865 BaseOffset = F->SLocEntryBaseOffset - 2;
6866 // 0 means the location is not loaded. So we need to add 1 to the index to
6867 // make it clear.
6868 ModuleFileIndex = F->Index + 1;
6869 assert(&getChain()->getModuleManager()[F->Index] == F);
6870 }
6871
6872 return SourceLocationEncoding::encode(Loc, BaseOffset, BaseModuleFileIndex: ModuleFileIndex);
6873}
6874
6875void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
6876 Loc = getAdjustedLocation(Loc);
6877 Record.push_back(Elt: getRawSourceLocationEncoding(Loc));
6878}
6879
6880void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
6881 AddSourceLocation(Loc: Range.getBegin(), Record);
6882 AddSourceLocation(Loc: Range.getEnd(), Record);
6883}
6884
6885void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
6886 AddAPInt(Value: Value.bitcastToAPInt());
6887}
6888
6889void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
6890 Record.push_back(Elt: getIdentifierRef(II));
6891}
6892
6893IdentifierID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
6894 if (!II)
6895 return 0;
6896
6897 IdentifierID &ID = IdentifierIDs[II];
6898 if (ID == 0)
6899 ID = NextIdentID++;
6900 return ID;
6901}
6902
6903MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
6904 // Don't emit builtin macros like __LINE__ to the AST file unless they
6905 // have been redefined by the header (in which case they are not
6906 // isBuiltinMacro).
6907 if (!MI || MI->isBuiltinMacro())
6908 return 0;
6909
6910 MacroID &ID = MacroIDs[MI];
6911 if (ID == 0) {
6912 ID = NextMacroID++;
6913 MacroInfoToEmitData Info = { .Name: Name, .MI: MI, .ID: ID };
6914 MacroInfosToEmit.push_back(x: Info);
6915 }
6916 return ID;
6917}
6918
6919uint32_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
6920 return IdentMacroDirectivesOffsetMap.lookup(Val: Name);
6921}
6922
6923void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
6924 Record->push_back(Elt: Writer->getSelectorRef(Sel: SelRef));
6925}
6926
6927SelectorID ASTWriter::getSelectorRef(Selector Sel) {
6928 if (Sel.getAsOpaquePtr() == nullptr) {
6929 return 0;
6930 }
6931
6932 SelectorID SID = SelectorIDs[Sel];
6933 if (SID == 0 && Chain) {
6934 // This might trigger a ReadSelector callback, which will set the ID for
6935 // this selector.
6936 Chain->LoadSelector(Sel);
6937 SID = SelectorIDs[Sel];
6938 }
6939 if (SID == 0) {
6940 SID = NextSelectorID++;
6941 SelectorIDs[Sel] = SID;
6942 }
6943 return SID;
6944}
6945
6946void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
6947 AddDeclRef(D: Temp->getDestructor());
6948}
6949
6950void ASTRecordWriter::AddTemplateArgumentLocInfo(
6951 const TemplateArgumentLoc &Arg) {
6952 const TemplateArgumentLocInfo &Info = Arg.getLocInfo();
6953 switch (auto K = Arg.getArgument().getKind()) {
6954 case TemplateArgument::Expression:
6955 AddStmt(S: Info.getAsExpr());
6956 break;
6957 case TemplateArgument::Type:
6958 AddTypeSourceInfo(TInfo: Info.getAsTypeSourceInfo());
6959 break;
6960 case TemplateArgument::Template:
6961 case TemplateArgument::TemplateExpansion:
6962 AddSourceLocation(Loc: Arg.getTemplateKWLoc());
6963 AddNestedNameSpecifierLoc(NNS: Arg.getTemplateQualifierLoc());
6964 AddSourceLocation(Loc: Arg.getTemplateNameLoc());
6965 if (K == TemplateArgument::TemplateExpansion)
6966 AddSourceLocation(Loc: Arg.getTemplateEllipsisLoc());
6967 break;
6968 case TemplateArgument::Null:
6969 case TemplateArgument::Integral:
6970 case TemplateArgument::Declaration:
6971 case TemplateArgument::NullPtr:
6972 case TemplateArgument::StructuralValue:
6973 case TemplateArgument::Pack:
6974 // FIXME: Is this right?
6975 break;
6976 }
6977}
6978
6979void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
6980 AddTemplateArgument(Arg: Arg.getArgument());
6981
6982 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
6983 bool InfoHasSameExpr
6984 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
6985 Record->push_back(Elt: InfoHasSameExpr);
6986 if (InfoHasSameExpr)
6987 return; // Avoid storing the same expr twice.
6988 }
6989 AddTemplateArgumentLocInfo(Arg);
6990}
6991
6992void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
6993 if (!TInfo) {
6994 AddTypeRef(T: QualType());
6995 return;
6996 }
6997
6998 AddTypeRef(T: TInfo->getType());
6999 AddTypeLoc(TL: TInfo->getTypeLoc());
7000}
7001
7002void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
7003 TypeLocWriter TLW(*this);
7004 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
7005 TLW.Visit(TyLoc: TL);
7006}
7007
7008void ASTWriter::AddTypeRef(ASTContext &Context, QualType T,
7009 RecordDataImpl &Record) {
7010 Record.push_back(Elt: GetOrCreateTypeID(Context, T));
7011}
7012
7013template <typename IdxForTypeTy>
7014static TypeID MakeTypeID(ASTContext &Context, QualType T,
7015 IdxForTypeTy IdxForType) {
7016 if (T.isNull())
7017 return PREDEF_TYPE_NULL_ID;
7018
7019 unsigned FastQuals = T.getLocalFastQualifiers();
7020 T.removeLocalFastQualifiers();
7021
7022 if (T.hasLocalNonFastQualifiers())
7023 return IdxForType(T).asTypeID(FastQuals);
7024
7025 assert(!T.hasLocalQualifiers());
7026
7027 if (const BuiltinType *BT = dyn_cast<BuiltinType>(Val: T.getTypePtr()))
7028 return TypeIdxFromBuiltin(BT).asTypeID(FastQuals);
7029
7030 if (T == Context.AutoDeductTy)
7031 return TypeIdx(0, PREDEF_TYPE_AUTO_DEDUCT).asTypeID(FastQuals);
7032 if (T == Context.AutoRRefDeductTy)
7033 return TypeIdx(0, PREDEF_TYPE_AUTO_RREF_DEDUCT).asTypeID(FastQuals);
7034
7035 return IdxForType(T).asTypeID(FastQuals);
7036}
7037
7038TypeID ASTWriter::GetOrCreateTypeID(ASTContext &Context, QualType T) {
7039 return MakeTypeID(Context, T, IdxForType: [&](QualType T) -> TypeIdx {
7040 if (T.isNull())
7041 return TypeIdx();
7042 assert(!T.getLocalFastQualifiers());
7043
7044 TypeIdx &Idx = TypeIdxs[T];
7045 if (Idx.getValue() == 0) {
7046 if (DoneWritingDeclsAndTypes) {
7047 assert(0 && "New type seen after serializing all the types to emit!");
7048 return TypeIdx();
7049 }
7050
7051 // We haven't seen this type before. Assign it a new ID and put it
7052 // into the queue of types to emit.
7053 Idx = TypeIdx(0, NextTypeID++);
7054 DeclTypesToEmit.push(x: T);
7055 }
7056 return Idx;
7057 });
7058}
7059
7060llvm::MapVector<ModuleFile *, const Decl *>
7061ASTWriter::CollectFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
7062 llvm::MapVector<ModuleFile *, const Decl *> Firsts;
7063 // FIXME: We can skip entries that we know are implied by others.
7064 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
7065 if (R->isFromASTFile())
7066 Firsts[Chain->getOwningModuleFile(D: R)] = R;
7067 else if (IncludeLocal)
7068 Firsts[nullptr] = R;
7069 }
7070 return Firsts;
7071}
7072
7073void ASTWriter::AddLookupOffsets(const LookupBlockOffsets &Offsets,
7074 RecordDataImpl &Record) {
7075 Record.push_back(Elt: Offsets.LexicalOffset);
7076 Record.push_back(Elt: Offsets.VisibleOffset);
7077 Record.push_back(Elt: Offsets.ModuleLocalOffset);
7078 Record.push_back(Elt: Offsets.TULocalOffset);
7079}
7080
7081void ASTWriter::AddMacroRef(MacroInfo *MI, const IdentifierInfo *Name,
7082 RecordDataImpl &Record) {
7083 MacroID MacroRef = getMacroRef(MI, Name);
7084 Record.push_back(Elt: MacroRef >> 32);
7085 Record.push_back(Elt: MacroRef & llvm::maskTrailingOnes<MacroID>(N: 32));
7086}
7087
7088void ASTWriter::AddEmittedDeclRef(const Decl *D, RecordDataImpl &Record) {
7089 if (!wasDeclEmitted(D))
7090 return;
7091
7092 AddDeclRef(D, Record);
7093}
7094
7095void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
7096 Record.push_back(Elt: GetDeclRef(D).getRawValue());
7097}
7098
7099LocalDeclID ASTWriter::GetDeclRef(const Decl *D) {
7100 assert(WritingAST && "Cannot request a declaration ID before AST writing");
7101
7102 if (!D) {
7103 return LocalDeclID();
7104 }
7105
7106 getLazyUpdates(D);
7107
7108 // If D comes from an AST file, its declaration ID is already known and
7109 // fixed.
7110 if (D->isFromASTFile()) {
7111 if (isWritingStdCXXNamedModules() && D->getOwningModule())
7112 TouchedTopLevelModules.insert(X: D->getOwningModule()->getTopLevelModule());
7113
7114 return LocalDeclID(D->getGlobalID());
7115 }
7116
7117 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer");
7118 LocalDeclID &ID = DeclIDs[D];
7119 if (ID.isInvalid()) {
7120 if (DoneWritingDeclsAndTypes) {
7121 assert(0 && "New decl seen after serializing all the decls to emit!");
7122 return LocalDeclID();
7123 }
7124
7125 // We haven't seen this declaration before. Give it a new ID and
7126 // enqueue it in the list of declarations to emit.
7127 ID = NextDeclID++;
7128 DeclTypesToEmit.push(x: const_cast<Decl *>(D));
7129 }
7130
7131 return ID;
7132}
7133
7134LocalDeclID ASTWriter::getDeclID(const Decl *D) {
7135 if (!D)
7136 return LocalDeclID();
7137
7138 // If D comes from an AST file, its declaration ID is already known and
7139 // fixed.
7140 if (D->isFromASTFile())
7141 return LocalDeclID(D->getGlobalID());
7142
7143 assert(DeclIDs.contains(D) && "Declaration not emitted!");
7144 return DeclIDs[D];
7145}
7146
7147bool ASTWriter::wasDeclEmitted(const Decl *D) const {
7148 assert(D);
7149
7150 assert(DoneWritingDeclsAndTypes &&
7151 "wasDeclEmitted should only be called after writing declarations");
7152
7153 if (D->isFromASTFile())
7154 return true;
7155
7156 bool Emitted = DeclIDs.contains(Val: D);
7157 assert((Emitted || (!D->getOwningModule() && isWritingStdCXXNamedModules()) ||
7158 GeneratingReducedBMI) &&
7159 "The declaration within modules can only be omitted in reduced BMI.");
7160 return Emitted;
7161}
7162
7163void ASTWriter::getLazyUpdates(const Decl *D) {
7164 if (!GeneratingReducedBMI)
7165 return;
7166
7167 if (auto *Iter = DeclUpdatesLazy.find(Key: D); Iter != DeclUpdatesLazy.end()) {
7168 for (DeclUpdate &Update : Iter->second)
7169 DeclUpdates[D].push_back(Elt: Update);
7170 DeclUpdatesLazy.erase(Iterator: Iter);
7171 }
7172
7173 // If the Decl in DeclUpdatesLazy gets touched, emit the update.
7174 if (auto *DC = dyn_cast<DeclContext>(Val: D);
7175 DC && UpdatedDeclContextsLazy.count(key: DC)) {
7176 UpdatedDeclContexts.insert(X: DC);
7177 UpdatedDeclContextsLazy.remove(X: DC);
7178 }
7179}
7180
7181void ASTWriter::associateDeclWithFile(const Decl *D, LocalDeclID ID) {
7182 assert(ID.isValid());
7183 assert(D);
7184
7185 SourceLocation Loc = D->getLocation();
7186 if (Loc.isInvalid())
7187 return;
7188
7189 // We only keep track of the file-level declarations of each file.
7190 if (!D->getLexicalDeclContext()->isFileContext())
7191 return;
7192 // FIXME: ParmVarDecls that are part of a function type of a parameter of
7193 // a function/objc method, should not have TU as lexical context.
7194 // TemplateTemplateParmDecls that are part of an alias template, should not
7195 // have TU as lexical context.
7196 if (isa<ParmVarDecl, TemplateTemplateParmDecl>(Val: D))
7197 return;
7198
7199 SourceManager &SM = PP->getSourceManager();
7200 SourceLocation FileLoc = SM.getFileLoc(Loc);
7201 assert(SM.isLocalSourceLocation(FileLoc));
7202 auto [FID, Offset] = SM.getDecomposedLoc(Loc: FileLoc);
7203 if (FID.isInvalid())
7204 return;
7205 assert(SM.getSLocEntry(FID).isFile());
7206 assert(IsSLocAffecting[FID.ID]);
7207
7208 std::unique_ptr<DeclIDInFileInfo> &Info = FileDeclIDs[FID];
7209 if (!Info)
7210 Info = std::make_unique<DeclIDInFileInfo>();
7211
7212 std::pair<unsigned, LocalDeclID> LocDecl(Offset, ID);
7213 LocDeclIDsTy &Decls = Info->DeclIDs;
7214 Decls.push_back(Elt: LocDecl);
7215}
7216
7217unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
7218 assert(needsAnonymousDeclarationNumber(D) &&
7219 "expected an anonymous declaration");
7220
7221 // Number the anonymous declarations within this context, if we've not
7222 // already done so.
7223 auto It = AnonymousDeclarationNumbers.find(Val: D);
7224 if (It == AnonymousDeclarationNumbers.end()) {
7225 auto *DC = D->getLexicalDeclContext();
7226 numberAnonymousDeclsWithin(DC, Visit: [&](const NamedDecl *ND, unsigned Number) {
7227 AnonymousDeclarationNumbers[ND] = Number;
7228 });
7229
7230 It = AnonymousDeclarationNumbers.find(Val: D);
7231 assert(It != AnonymousDeclarationNumbers.end() &&
7232 "declaration not found within its lexical context");
7233 }
7234
7235 return It->second;
7236}
7237
7238void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
7239 DeclarationName Name) {
7240 switch (Name.getNameKind()) {
7241 case DeclarationName::CXXConstructorName:
7242 case DeclarationName::CXXDestructorName:
7243 case DeclarationName::CXXConversionFunctionName:
7244 AddTypeSourceInfo(TInfo: DNLoc.getNamedTypeInfo());
7245 break;
7246
7247 case DeclarationName::CXXOperatorName:
7248 AddSourceRange(Range: DNLoc.getCXXOperatorNameRange());
7249 break;
7250
7251 case DeclarationName::CXXLiteralOperatorName:
7252 AddSourceLocation(Loc: DNLoc.getCXXLiteralOperatorNameLoc());
7253 break;
7254
7255 case DeclarationName::Identifier:
7256 case DeclarationName::ObjCZeroArgSelector:
7257 case DeclarationName::ObjCOneArgSelector:
7258 case DeclarationName::ObjCMultiArgSelector:
7259 case DeclarationName::CXXUsingDirective:
7260 case DeclarationName::CXXDeductionGuideName:
7261 break;
7262 }
7263}
7264
7265void ASTRecordWriter::AddDeclarationNameInfo(
7266 const DeclarationNameInfo &NameInfo) {
7267 AddDeclarationName(Name: NameInfo.getName());
7268 AddSourceLocation(Loc: NameInfo.getLoc());
7269 AddDeclarationNameLoc(DNLoc: NameInfo.getInfo(), Name: NameInfo.getName());
7270}
7271
7272void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
7273 AddNestedNameSpecifierLoc(NNS: Info.QualifierLoc);
7274 Record->push_back(Elt: Info.NumTemplParamLists);
7275 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
7276 AddTemplateParameterList(TemplateParams: Info.TemplParamLists[i]);
7277}
7278
7279void ASTRecordWriter::AddNestedNameSpecifierLoc(
7280 NestedNameSpecifierLoc QualifierLoc) {
7281 // Nested name specifiers usually aren't too long. I think that 8 would
7282 // typically accommodate the vast majority.
7283 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
7284
7285 // Push each of the nested-name-specifiers's onto a stack for
7286 // serialization in reverse order.
7287 while (QualifierLoc) {
7288 NestedNames.push_back(Elt: QualifierLoc);
7289 QualifierLoc = QualifierLoc.getAsNamespaceAndPrefix().Prefix;
7290 }
7291
7292 Record->push_back(Elt: NestedNames.size());
7293 while(!NestedNames.empty()) {
7294 QualifierLoc = NestedNames.pop_back_val();
7295 NestedNameSpecifier Qualifier = QualifierLoc.getNestedNameSpecifier();
7296 NestedNameSpecifier::Kind Kind = Qualifier.getKind();
7297 Record->push_back(Elt: llvm::to_underlying(E: Kind));
7298 switch (Kind) {
7299 case NestedNameSpecifier::Kind::Namespace:
7300 AddDeclRef(D: Qualifier.getAsNamespaceAndPrefix().Namespace);
7301 AddSourceRange(Range: QualifierLoc.getLocalSourceRange());
7302 break;
7303
7304 case NestedNameSpecifier::Kind::Type: {
7305 TypeLoc TL = QualifierLoc.castAsTypeLoc();
7306 AddTypeRef(T: TL.getType());
7307 AddTypeLoc(TL);
7308 AddSourceLocation(Loc: QualifierLoc.getLocalSourceRange().getEnd());
7309 break;
7310 }
7311
7312 case NestedNameSpecifier::Kind::Global:
7313 AddSourceLocation(Loc: QualifierLoc.getLocalSourceRange().getEnd());
7314 break;
7315
7316 case NestedNameSpecifier::Kind::MicrosoftSuper:
7317 AddDeclRef(D: Qualifier.getAsMicrosoftSuper());
7318 AddSourceRange(Range: QualifierLoc.getLocalSourceRange());
7319 break;
7320
7321 case NestedNameSpecifier::Kind::Null:
7322 llvm_unreachable("unexpected null nested name specifier");
7323 }
7324 }
7325}
7326
7327void ASTRecordWriter::AddTemplateParameterList(
7328 const TemplateParameterList *TemplateParams) {
7329 assert(TemplateParams && "No TemplateParams!");
7330 AddSourceLocation(Loc: TemplateParams->getTemplateLoc());
7331 AddSourceLocation(Loc: TemplateParams->getLAngleLoc());
7332 AddSourceLocation(Loc: TemplateParams->getRAngleLoc());
7333
7334 Record->push_back(Elt: TemplateParams->size());
7335 for (const auto &P : *TemplateParams)
7336 AddDeclRef(D: P);
7337 if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
7338 Record->push_back(Elt: true);
7339 writeStmtRef(S: RequiresClause);
7340 } else {
7341 Record->push_back(Elt: false);
7342 }
7343}
7344
7345/// Emit a template argument list.
7346void ASTRecordWriter::AddTemplateArgumentList(
7347 const TemplateArgumentList *TemplateArgs) {
7348 assert(TemplateArgs && "No TemplateArgs!");
7349 Record->push_back(Elt: TemplateArgs->size());
7350 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
7351 AddTemplateArgument(Arg: TemplateArgs->get(Idx: i));
7352}
7353
7354void ASTRecordWriter::AddASTTemplateArgumentListInfo(
7355 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
7356 assert(ASTTemplArgList && "No ASTTemplArgList!");
7357 AddSourceLocation(Loc: ASTTemplArgList->LAngleLoc);
7358 AddSourceLocation(Loc: ASTTemplArgList->RAngleLoc);
7359 Record->push_back(Elt: ASTTemplArgList->NumTemplateArgs);
7360 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
7361 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
7362 AddTemplateArgumentLoc(Arg: TemplArgs[i]);
7363}
7364
7365void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
7366 Record->push_back(Elt: Set.size());
7367 for (ASTUnresolvedSet::const_iterator
7368 I = Set.begin(), E = Set.end(); I != E; ++I) {
7369 AddDeclRef(D: I.getDecl());
7370 Record->push_back(Elt: I.getAccess());
7371 }
7372}
7373
7374// FIXME: Move this out of the main ASTRecordWriter interface.
7375void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
7376 Record->push_back(Elt: Base.isVirtual());
7377 Record->push_back(Elt: Base.isBaseOfClass());
7378 Record->push_back(Elt: Base.getAccessSpecifierAsWritten());
7379 Record->push_back(Elt: Base.getInheritConstructors());
7380 AddTypeSourceInfo(TInfo: Base.getTypeSourceInfo());
7381 AddSourceRange(Range: Base.getSourceRange());
7382 AddSourceLocation(Loc: Base.isPackExpansion()? Base.getEllipsisLoc()
7383 : SourceLocation());
7384}
7385
7386static uint64_t EmitCXXBaseSpecifiers(ASTContext &Context, ASTWriter &W,
7387 ArrayRef<CXXBaseSpecifier> Bases) {
7388 ASTWriter::RecordData Record;
7389 ASTRecordWriter Writer(Context, W, Record);
7390 Writer.push_back(N: Bases.size());
7391
7392 for (auto &Base : Bases)
7393 Writer.AddCXXBaseSpecifier(Base);
7394
7395 return Writer.Emit(Code: serialization::DECL_CXX_BASE_SPECIFIERS);
7396}
7397
7398// FIXME: Move this out of the main ASTRecordWriter interface.
7399void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
7400 AddOffset(BitOffset: EmitCXXBaseSpecifiers(Context&: getASTContext(), W&: *Writer, Bases));
7401}
7402
7403static uint64_t
7404EmitCXXCtorInitializers(ASTContext &Context, ASTWriter &W,
7405 ArrayRef<CXXCtorInitializer *> CtorInits) {
7406 ASTWriter::RecordData Record;
7407 ASTRecordWriter Writer(Context, W, Record);
7408 Writer.push_back(N: CtorInits.size());
7409
7410 for (auto *Init : CtorInits) {
7411 if (Init->isBaseInitializer()) {
7412 Writer.push_back(N: CTOR_INITIALIZER_BASE);
7413 Writer.AddTypeSourceInfo(TInfo: Init->getTypeSourceInfo());
7414 Writer.push_back(N: Init->isBaseVirtual());
7415 } else if (Init->isDelegatingInitializer()) {
7416 Writer.push_back(N: CTOR_INITIALIZER_DELEGATING);
7417 Writer.AddTypeSourceInfo(TInfo: Init->getTypeSourceInfo());
7418 } else if (Init->isMemberInitializer()){
7419 Writer.push_back(N: CTOR_INITIALIZER_MEMBER);
7420 Writer.AddDeclRef(D: Init->getMember());
7421 } else {
7422 Writer.push_back(N: CTOR_INITIALIZER_INDIRECT_MEMBER);
7423 Writer.AddDeclRef(D: Init->getIndirectMember());
7424 }
7425
7426 Writer.AddSourceLocation(Loc: Init->getMemberLocation());
7427 Writer.AddStmt(S: Init->getInit());
7428 Writer.AddSourceLocation(Loc: Init->getLParenLoc());
7429 Writer.AddSourceLocation(Loc: Init->getRParenLoc());
7430 Writer.push_back(N: Init->isWritten());
7431 if (Init->isWritten())
7432 Writer.push_back(N: Init->getSourceOrder());
7433 }
7434
7435 return Writer.Emit(Code: serialization::DECL_CXX_CTOR_INITIALIZERS);
7436}
7437
7438// FIXME: Move this out of the main ASTRecordWriter interface.
7439void ASTRecordWriter::AddCXXCtorInitializers(
7440 ArrayRef<CXXCtorInitializer *> CtorInits) {
7441 AddOffset(BitOffset: EmitCXXCtorInitializers(Context&: getASTContext(), W&: *Writer, CtorInits));
7442}
7443
7444void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
7445 auto &Data = D->data();
7446
7447 Record->push_back(Elt: Data.IsLambda);
7448
7449 BitsPacker DefinitionBits;
7450
7451#define FIELD(Name, Width, Merge) \
7452 if (!DefinitionBits.canWriteNextNBits(Width)) { \
7453 Record->push_back(DefinitionBits); \
7454 DefinitionBits.reset(0); \
7455 } \
7456 DefinitionBits.addBits(Data.Name, Width);
7457
7458#include "clang/AST/CXXRecordDeclDefinitionBits.def"
7459#undef FIELD
7460
7461 Record->push_back(Elt: DefinitionBits);
7462
7463 // getODRHash will compute the ODRHash if it has not been previously
7464 // computed.
7465 Record->push_back(Elt: D->getODRHash());
7466
7467 bool ModulesCodegen =
7468 !D->isDependentType() &&
7469 D->getTemplateSpecializationKind() !=
7470 TSK_ExplicitInstantiationDeclaration &&
7471 (Writer->getLangOpts().ModulesDebugInfo || D->isInNamedModule());
7472 Record->push_back(Elt: ModulesCodegen);
7473 if (ModulesCodegen)
7474 Writer->AddDeclRef(D, Record&: Writer->ModularCodegenDecls);
7475
7476 // IsLambda bit is already saved.
7477
7478 AddUnresolvedSet(Set: Data.Conversions.get(C&: getASTContext()));
7479 Record->push_back(Elt: Data.ComputedVisibleConversions);
7480 if (Data.ComputedVisibleConversions)
7481 AddUnresolvedSet(Set: Data.VisibleConversions.get(C&: getASTContext()));
7482 // Data.Definition is the owning decl, no need to write it.
7483
7484 if (!Data.IsLambda) {
7485 Record->push_back(Elt: Data.NumBases);
7486 if (Data.NumBases > 0)
7487 AddCXXBaseSpecifiers(Bases: Data.bases());
7488
7489 // FIXME: Make VBases lazily computed when needed to avoid storing them.
7490 Record->push_back(Elt: Data.NumVBases);
7491 if (Data.NumVBases > 0)
7492 AddCXXBaseSpecifiers(Bases: Data.vbases());
7493
7494 AddDeclRef(D: D->getFirstFriend());
7495 } else {
7496 auto &Lambda = D->getLambdaData();
7497
7498 BitsPacker LambdaBits;
7499 LambdaBits.addBits(Value: Lambda.DependencyKind, /*Width=*/BitsWidth: 2);
7500 LambdaBits.addBit(Value: Lambda.IsGenericLambda);
7501 LambdaBits.addBits(Value: Lambda.CaptureDefault, /*Width=*/BitsWidth: 2);
7502 LambdaBits.addBits(Value: Lambda.NumCaptures, /*Width=*/BitsWidth: 15);
7503 LambdaBits.addBit(Value: Lambda.HasKnownInternalLinkage);
7504 Record->push_back(Elt: LambdaBits);
7505
7506 Record->push_back(Elt: Lambda.NumExplicitCaptures);
7507 Record->push_back(Elt: Lambda.ManglingNumber);
7508 Record->push_back(Elt: D->getDeviceLambdaManglingNumber());
7509 // The lambda context declaration and index within the context are provided
7510 // separately, so that they can be used for merging.
7511 AddTypeSourceInfo(TInfo: Lambda.MethodTyInfo);
7512 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
7513 const LambdaCapture &Capture = Lambda.Captures.front()[I];
7514 AddSourceLocation(Loc: Capture.getLocation());
7515
7516 BitsPacker CaptureBits;
7517 CaptureBits.addBit(Value: Capture.isImplicit());
7518 CaptureBits.addBits(Value: Capture.getCaptureKind(), /*Width=*/BitsWidth: 3);
7519 Record->push_back(Elt: CaptureBits);
7520
7521 switch (Capture.getCaptureKind()) {
7522 case LCK_StarThis:
7523 case LCK_This:
7524 case LCK_VLAType:
7525 break;
7526 case LCK_ByCopy:
7527 case LCK_ByRef:
7528 ValueDecl *Var =
7529 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
7530 AddDeclRef(D: Var);
7531 AddSourceLocation(Loc: Capture.isPackExpansion() ? Capture.getEllipsisLoc()
7532 : SourceLocation());
7533 break;
7534 }
7535 }
7536 }
7537}
7538
7539void ASTRecordWriter::AddVarDeclInit(const VarDecl *VD) {
7540 const Expr *Init = VD->getInit();
7541 if (!Init) {
7542 push_back(N: 0);
7543 return;
7544 }
7545
7546 uint64_t Val = 1;
7547 if (EvaluatedStmt *ES = VD->getEvaluatedStmt()) {
7548 // This may trigger evaluation, so run it first
7549 if (VD->hasInitWithSideEffects())
7550 Val |= 16;
7551 assert(ES->CheckedForSideEffects);
7552 Val |= (ES->HasConstantInitialization ? 2 : 0);
7553 Val |= (ES->HasConstantDestruction ? 4 : 0);
7554 const APValue *Evaluated = VD->getEvaluatedValue();
7555 // If the evaluated result is constant, emit it.
7556 if (Evaluated && (Evaluated->isInt() || Evaluated->isFloat()))
7557 Val |= 8;
7558 }
7559 push_back(N: Val);
7560 if (Val & 8) {
7561 AddAPValue(Value: *VD->getEvaluatedValue());
7562 }
7563
7564 writeStmtRef(S: Init);
7565}
7566
7567void ASTWriter::ReaderInitialized(ASTReader *Reader) {
7568 assert(Reader && "Cannot remove chain");
7569 assert((!Chain || Chain == Reader) && "Cannot replace chain");
7570 assert(FirstDeclID == NextDeclID &&
7571 FirstTypeID == NextTypeID &&
7572 FirstIdentID == NextIdentID &&
7573 FirstMacroID == NextMacroID &&
7574 FirstSubmoduleID == NextSubmoduleID &&
7575 FirstSelectorID == NextSelectorID &&
7576 "Setting chain after writing has started.");
7577
7578 Chain = Reader;
7579
7580 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
7581 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
7582 NextSelectorID = FirstSelectorID;
7583 NextSubmoduleID = FirstSubmoduleID;
7584}
7585
7586void ASTWriter::IdentifierRead(IdentifierID ID, IdentifierInfo *II) {
7587 // Don't reuse Type ID from external modules for named modules. See the
7588 // comments in WriteASTCore for details.
7589 if (isWritingStdCXXNamedModules())
7590 return;
7591
7592 IdentifierID &StoredID = IdentifierIDs[II];
7593 unsigned OriginalModuleFileIndex = StoredID >> 32;
7594
7595 // Always keep the local identifier ID. See \p TypeRead() for more
7596 // information.
7597 if (OriginalModuleFileIndex == 0 && StoredID)
7598 return;
7599
7600 // Otherwise, keep the highest ID since the module file comes later has
7601 // higher module file indexes.
7602 if (ID > StoredID)
7603 StoredID = ID;
7604}
7605
7606void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
7607 // Always keep the highest ID. See \p TypeRead() for more information.
7608 MacroID &StoredID = MacroIDs[MI];
7609 unsigned OriginalModuleFileIndex = StoredID >> 32;
7610
7611 // Always keep the local macro ID. See \p TypeRead() for more information.
7612 if (OriginalModuleFileIndex == 0 && StoredID)
7613 return;
7614
7615 // Otherwise, keep the highest ID since the module file comes later has
7616 // higher module file indexes.
7617 if (ID > StoredID)
7618 StoredID = ID;
7619}
7620
7621void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
7622 // Don't reuse Type ID from external modules for named modules. See the
7623 // comments in WriteASTCore for details.
7624 if (isWritingStdCXXNamedModules())
7625 return;
7626
7627 // Always take the type index that comes in later module files.
7628 // This copes with an interesting
7629 // case for chained AST writing where we schedule writing the type and then,
7630 // later, deserialize the type from another AST. In this case, we want to
7631 // keep the entry from a later module so that we can properly write it out to
7632 // the AST file.
7633 TypeIdx &StoredIdx = TypeIdxs[T];
7634
7635 // Ignore it if the type comes from the current being written module file.
7636 // Since the current module file being written logically has the highest
7637 // index.
7638 unsigned ModuleFileIndex = StoredIdx.getModuleFileIndex();
7639 if (ModuleFileIndex == 0 && StoredIdx.getValue())
7640 return;
7641
7642 // Otherwise, keep the highest ID since the module file comes later has
7643 // higher module file indexes.
7644 if (Idx.getModuleFileIndex() >= StoredIdx.getModuleFileIndex())
7645 StoredIdx = Idx;
7646}
7647
7648void ASTWriter::PredefinedDeclBuilt(PredefinedDeclIDs ID, const Decl *D) {
7649 assert(D->isCanonicalDecl() && "predefined decl is not canonical");
7650 DeclIDs[D] = LocalDeclID(ID);
7651 PredefinedDecls.insert(Ptr: D);
7652}
7653
7654void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
7655 // Always keep the highest ID. See \p TypeRead() for more information.
7656 SelectorID &StoredID = SelectorIDs[S];
7657 if (ID > StoredID)
7658 StoredID = ID;
7659}
7660
7661void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
7662 MacroDefinitionRecord *MD) {
7663 assert(!MacroDefinitions.contains(MD));
7664 MacroDefinitions[MD] = ID;
7665}
7666
7667void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
7668 assert(!SubmoduleIDs.contains(Mod));
7669 SubmoduleIDs[Mod] = ID;
7670}
7671
7672void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
7673 if (Chain && Chain->isProcessingUpdateRecords()) return;
7674 assert(D->isCompleteDefinition());
7675 assert(!WritingAST && "Already writing the AST!");
7676 if (auto *RD = dyn_cast<CXXRecordDecl>(Val: D)) {
7677 // We are interested when a PCH decl is modified.
7678 if (RD->isFromASTFile()) {
7679 // A forward reference was mutated into a definition. Rewrite it.
7680 // FIXME: This happens during template instantiation, should we
7681 // have created a new definition decl instead ?
7682 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&
7683 "completed a tag from another module but not by instantiation?");
7684 DeclUpdates[RD].push_back(
7685 Elt: DeclUpdate(DeclUpdateKind::CXXInstantiatedClassDefinition));
7686 }
7687 }
7688}
7689
7690static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
7691 if (D->isFromASTFile())
7692 return true;
7693
7694 // The predefined __va_list_tag struct is imported if we imported any decls.
7695 // FIXME: This is a gross hack.
7696 return D == D->getASTContext().getVaListTagDecl();
7697}
7698
7699void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
7700 if (Chain && Chain->isProcessingUpdateRecords()) return;
7701 assert(DC->isLookupContext() &&
7702 "Should not add lookup results to non-lookup contexts!");
7703
7704 // TU is handled elsewhere.
7705 if (isa<TranslationUnitDecl>(Val: DC))
7706 return;
7707
7708 // Namespaces are handled elsewhere, except for template instantiations of
7709 // FunctionTemplateDecls in namespaces. We are interested in cases where the
7710 // local instantiations are added to an imported context. Only happens when
7711 // adding ADL lookup candidates, for example templated friends.
7712 if (isa<NamespaceDecl>(Val: DC) && D->getFriendObjectKind() == Decl::FOK_None &&
7713 !isa<FunctionTemplateDecl>(Val: D))
7714 return;
7715
7716 // We're only interested in cases where a local declaration is added to an
7717 // imported context.
7718 if (D->isFromASTFile() || !isImportedDeclContext(Chain, D: cast<Decl>(Val: DC)))
7719 return;
7720
7721 assert(DC == DC->getPrimaryContext() && "added to non-primary context");
7722 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!");
7723 assert(!WritingAST && "Already writing the AST!");
7724 if (UpdatedDeclContexts.insert(X: DC) && !cast<Decl>(Val: DC)->isFromASTFile()) {
7725 // We're adding a visible declaration to a predefined decl context. Ensure
7726 // that we write out all of its lookup results so we don't get a nasty
7727 // surprise when we try to emit its lookup table.
7728 llvm::append_range(C&: DeclsToEmitEvenIfUnreferenced, R: DC->decls());
7729 }
7730 DeclsToEmitEvenIfUnreferenced.push_back(Elt: D);
7731}
7732
7733void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
7734 if (Chain && Chain->isProcessingUpdateRecords()) return;
7735 assert(D->isImplicit());
7736
7737 // We're only interested in cases where a local declaration is added to an
7738 // imported context.
7739 if (D->isFromASTFile() || !isImportedDeclContext(Chain, D: RD))
7740 return;
7741
7742 if (!isa<CXXMethodDecl>(Val: D))
7743 return;
7744
7745 // A decl coming from PCH was modified.
7746 assert(RD->isCompleteDefinition());
7747 assert(!WritingAST && "Already writing the AST!");
7748 DeclUpdates[RD].push_back(
7749 Elt: DeclUpdate(DeclUpdateKind::CXXAddedImplicitMember, D));
7750}
7751
7752void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
7753 if (Chain && Chain->isProcessingUpdateRecords()) return;
7754 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!");
7755 if (!Chain) return;
7756 Chain->forEachImportedKeyDecl(D: FD, Visit: [&](const Decl *D) {
7757 // If we don't already know the exception specification for this redecl
7758 // chain, add an update record for it.
7759 if (isUnresolvedExceptionSpec(ESpecType: cast<FunctionDecl>(Val: D)
7760 ->getType()
7761 ->castAs<FunctionProtoType>()
7762 ->getExceptionSpecType()))
7763 DeclUpdates[D].push_back(Elt: DeclUpdateKind::CXXResolvedExceptionSpec);
7764 });
7765}
7766
7767void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
7768 if (Chain && Chain->isProcessingUpdateRecords()) return;
7769 assert(!WritingAST && "Already writing the AST!");
7770 if (!Chain) return;
7771 Chain->forEachImportedKeyDecl(D: FD, Visit: [&](const Decl *D) {
7772 DeclUpdates[D].push_back(
7773 Elt: DeclUpdate(DeclUpdateKind::CXXDeducedReturnType, ReturnType));
7774 });
7775}
7776
7777void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
7778 const FunctionDecl *Delete,
7779 Expr *ThisArg) {
7780 if (Chain && Chain->isProcessingUpdateRecords()) return;
7781 assert(!WritingAST && "Already writing the AST!");
7782 assert(Delete && "Not given an operator delete");
7783 if (!Chain) return;
7784 Chain->forEachImportedKeyDecl(D: DD, Visit: [&](const Decl *D) {
7785 DeclUpdates[D].push_back(
7786 Elt: DeclUpdate(DeclUpdateKind::CXXResolvedDtorDelete, Delete));
7787 });
7788}
7789
7790void ASTWriter::ResolvedOperatorGlobDelete(const CXXDestructorDecl *DD,
7791 const FunctionDecl *GlobDelete) {
7792 if (Chain && Chain->isProcessingUpdateRecords())
7793 return;
7794 assert(!WritingAST && "Already writing the AST!");
7795 assert(GlobDelete && "Not given an operator delete");
7796 if (!Chain)
7797 return;
7798 Chain->forEachImportedKeyDecl(D: DD, Visit: [&](const Decl *D) {
7799 DeclUpdates[D].push_back(
7800 Elt: DeclUpdate(DeclUpdateKind::CXXResolvedDtorGlobDelete, GlobDelete));
7801 });
7802}
7803
7804void ASTWriter::ResolvedOperatorArrayDelete(const CXXDestructorDecl *DD,
7805 const FunctionDecl *ArrayDelete) {
7806 if (Chain && Chain->isProcessingUpdateRecords())
7807 return;
7808 assert(!WritingAST && "Already writing the AST!");
7809 assert(ArrayDelete && "Not given an operator delete");
7810 if (!Chain)
7811 return;
7812 Chain->forEachImportedKeyDecl(D: DD, Visit: [&](const Decl *D) {
7813 DeclUpdates[D].push_back(
7814 Elt: DeclUpdate(DeclUpdateKind::CXXResolvedDtorArrayDelete, ArrayDelete));
7815 });
7816}
7817
7818void ASTWriter::ResolvedOperatorGlobArrayDelete(
7819 const CXXDestructorDecl *DD, const FunctionDecl *GlobArrayDelete) {
7820 if (Chain && Chain->isProcessingUpdateRecords())
7821 return;
7822 assert(!WritingAST && "Already writing the AST!");
7823 assert(GlobArrayDelete && "Not given an operator delete");
7824 if (!Chain)
7825 return;
7826 Chain->forEachImportedKeyDecl(D: DD, Visit: [&](const Decl *D) {
7827 DeclUpdates[D].push_back(Elt: DeclUpdate(
7828 DeclUpdateKind::CXXResolvedDtorGlobArrayDelete, GlobArrayDelete));
7829 });
7830}
7831
7832void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
7833 if (Chain && Chain->isProcessingUpdateRecords()) return;
7834 assert(!WritingAST && "Already writing the AST!");
7835 if (!D->isFromASTFile())
7836 return; // Declaration not imported from PCH.
7837
7838 // The function definition may not have a body due to parsing errors.
7839 if (!D->doesThisDeclarationHaveABody())
7840 return;
7841
7842 // Implicit function decl from a PCH was defined.
7843 DeclUpdates[D].push_back(
7844 Elt: DeclUpdate(DeclUpdateKind::CXXAddedFunctionDefinition));
7845}
7846
7847void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
7848 if (Chain && Chain->isProcessingUpdateRecords()) return;
7849 assert(!WritingAST && "Already writing the AST!");
7850 if (!D->isFromASTFile())
7851 return;
7852
7853 DeclUpdates[D].push_back(Elt: DeclUpdate(DeclUpdateKind::CXXAddedVarDefinition));
7854}
7855
7856void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
7857 if (Chain && Chain->isProcessingUpdateRecords()) return;
7858 assert(!WritingAST && "Already writing the AST!");
7859 if (!D->isFromASTFile())
7860 return;
7861
7862 // The function definition may not have a body due to parsing errors.
7863 if (!D->doesThisDeclarationHaveABody())
7864 return;
7865
7866 DeclUpdates[D].push_back(
7867 Elt: DeclUpdate(DeclUpdateKind::CXXAddedFunctionDefinition));
7868}
7869
7870void ASTWriter::InstantiationRequested(const ValueDecl *D) {
7871 if (Chain && Chain->isProcessingUpdateRecords()) return;
7872 assert(!WritingAST && "Already writing the AST!");
7873 if (!D->isFromASTFile())
7874 return;
7875
7876 // Since the actual instantiation is delayed, this really means that we need
7877 // to update the instantiation location.
7878 SourceLocation POI;
7879 if (auto *VD = dyn_cast<VarDecl>(Val: D))
7880 POI = VD->getPointOfInstantiation();
7881 else
7882 POI = cast<FunctionDecl>(Val: D)->getPointOfInstantiation();
7883 DeclUpdates[D].push_back(
7884 Elt: DeclUpdate(DeclUpdateKind::CXXPointOfInstantiation, POI));
7885}
7886
7887void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
7888 if (Chain && Chain->isProcessingUpdateRecords()) return;
7889 assert(!WritingAST && "Already writing the AST!");
7890 if (!D->isFromASTFile())
7891 return;
7892
7893 DeclUpdates[D].push_back(
7894 Elt: DeclUpdate(DeclUpdateKind::CXXInstantiatedDefaultArgument, D));
7895}
7896
7897void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
7898 assert(!WritingAST && "Already writing the AST!");
7899 if (!D->isFromASTFile())
7900 return;
7901
7902 DeclUpdates[D].push_back(
7903 Elt: DeclUpdate(DeclUpdateKind::CXXInstantiatedDefaultMemberInitializer, D));
7904}
7905
7906void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
7907 const ObjCInterfaceDecl *IFD) {
7908 if (Chain && Chain->isProcessingUpdateRecords()) return;
7909 assert(!WritingAST && "Already writing the AST!");
7910 if (!IFD->isFromASTFile())
7911 return; // Declaration not imported from PCH.
7912
7913 assert(IFD->getDefinition() && "Category on a class without a definition?");
7914 ObjCClassesWithCategories.insert(
7915 X: const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
7916}
7917
7918void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
7919 if (Chain && Chain->isProcessingUpdateRecords()) return;
7920 assert(!WritingAST && "Already writing the AST!");
7921
7922 // If there is *any* declaration of the entity that's not from an AST file,
7923 // we can skip writing the update record. We make sure that isUsed() triggers
7924 // completion of the redeclaration chain of the entity.
7925 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
7926 if (IsLocalDecl(D: Prev))
7927 return;
7928
7929 DeclUpdates[D].push_back(Elt: DeclUpdate(DeclUpdateKind::DeclMarkedUsed));
7930}
7931
7932void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
7933 if (Chain && Chain->isProcessingUpdateRecords()) return;
7934 assert(!WritingAST && "Already writing the AST!");
7935 if (!D->isFromASTFile())
7936 return;
7937
7938 DeclUpdates[D].push_back(
7939 Elt: DeclUpdate(DeclUpdateKind::DeclMarkedOpenMPThreadPrivate));
7940}
7941
7942void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
7943 if (Chain && Chain->isProcessingUpdateRecords()) return;
7944 assert(!WritingAST && "Already writing the AST!");
7945 if (!D->isFromASTFile())
7946 return;
7947
7948 DeclUpdates[D].push_back(
7949 Elt: DeclUpdate(DeclUpdateKind::DeclMarkedOpenMPAllocate, A));
7950}
7951
7952void ASTWriter::DeclarationMarkedOpenMPIndirectCall(const Decl *D) {
7953 if (Chain && Chain->isProcessingUpdateRecords())
7954 return;
7955 assert(!WritingAST && "Already writing the AST!");
7956 if (!D->isFromASTFile())
7957 return;
7958
7959 DeclUpdates[D].push_back(
7960 Elt: DeclUpdate(DeclUpdateKind::DeclMarkedOpenMPIndirectCall));
7961}
7962
7963void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
7964 const Attr *Attr) {
7965 if (Chain && Chain->isProcessingUpdateRecords()) return;
7966 assert(!WritingAST && "Already writing the AST!");
7967 if (!D->isFromASTFile())
7968 return;
7969
7970 DeclUpdates[D].push_back(
7971 Elt: DeclUpdate(DeclUpdateKind::DeclMarkedOpenMPDeclareTarget, Attr));
7972}
7973
7974void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
7975 if (Chain && Chain->isProcessingUpdateRecords()) return;
7976 assert(!WritingAST && "Already writing the AST!");
7977 assert(!D->isUnconditionallyVisible() && "expected a hidden declaration");
7978 DeclUpdates[D].push_back(Elt: DeclUpdate(DeclUpdateKind::DeclExported, M));
7979}
7980
7981void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
7982 const RecordDecl *Record) {
7983 if (Chain && Chain->isProcessingUpdateRecords()) return;
7984 assert(!WritingAST && "Already writing the AST!");
7985 if (!Record->isFromASTFile())
7986 return;
7987 DeclUpdates[Record].push_back(
7988 Elt: DeclUpdate(DeclUpdateKind::AddedAttrToRecord, Attr));
7989}
7990
7991void ASTWriter::AddedCXXTemplateSpecialization(
7992 const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
7993 assert(!WritingAST && "Already writing the AST!");
7994
7995 if (!TD->getFirstDecl()->isFromASTFile())
7996 return;
7997 if (Chain && Chain->isProcessingUpdateRecords())
7998 return;
7999
8000 DeclsToEmitEvenIfUnreferenced.push_back(Elt: D);
8001}
8002
8003void ASTWriter::AddedCXXTemplateSpecialization(
8004 const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
8005 assert(!WritingAST && "Already writing the AST!");
8006
8007 if (!TD->getFirstDecl()->isFromASTFile())
8008 return;
8009 if (Chain && Chain->isProcessingUpdateRecords())
8010 return;
8011
8012 DeclsToEmitEvenIfUnreferenced.push_back(Elt: D);
8013}
8014
8015void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
8016 const FunctionDecl *D) {
8017 assert(!WritingAST && "Already writing the AST!");
8018
8019 if (!TD->getFirstDecl()->isFromASTFile())
8020 return;
8021 if (Chain && Chain->isProcessingUpdateRecords())
8022 return;
8023
8024 DeclsToEmitEvenIfUnreferenced.push_back(Elt: D);
8025}
8026
8027//===----------------------------------------------------------------------===//
8028//// OMPClause Serialization
8029////===----------------------------------------------------------------------===//
8030
8031namespace {
8032
8033class OMPClauseWriter : public OMPClauseVisitor<OMPClauseWriter> {
8034 ASTRecordWriter &Record;
8035
8036public:
8037 OMPClauseWriter(ASTRecordWriter &Record) : Record(Record) {}
8038#define GEN_CLANG_CLAUSE_CLASS
8039#define CLAUSE_CLASS(Enum, Str, Class) void Visit##Class(Class *S);
8040#include "llvm/Frontend/OpenMP/OMP.inc"
8041 void writeClause(OMPClause *C);
8042 void VisitOMPClauseWithPreInit(OMPClauseWithPreInit *C);
8043 void VisitOMPClauseWithPostUpdate(OMPClauseWithPostUpdate *C);
8044};
8045
8046}
8047
8048void ASTRecordWriter::writeOMPClause(OMPClause *C) {
8049 OMPClauseWriter(*this).writeClause(C);
8050}
8051
8052void OMPClauseWriter::writeClause(OMPClause *C) {
8053 Record.push_back(N: unsigned(C->getClauseKind()));
8054 Visit(S: C);
8055 Record.AddSourceLocation(Loc: C->getBeginLoc());
8056 Record.AddSourceLocation(Loc: C->getEndLoc());
8057}
8058
8059void OMPClauseWriter::VisitOMPClauseWithPreInit(OMPClauseWithPreInit *C) {
8060 Record.push_back(N: uint64_t(C->getCaptureRegion()));
8061 Record.AddStmt(S: C->getPreInitStmt());
8062}
8063
8064void OMPClauseWriter::VisitOMPClauseWithPostUpdate(OMPClauseWithPostUpdate *C) {
8065 VisitOMPClauseWithPreInit(C);
8066 Record.AddStmt(S: C->getPostUpdateExpr());
8067}
8068
8069void OMPClauseWriter::VisitOMPIfClause(OMPIfClause *C) {
8070 VisitOMPClauseWithPreInit(C);
8071 Record.push_back(N: uint64_t(C->getNameModifier()));
8072 Record.AddSourceLocation(Loc: C->getNameModifierLoc());
8073 Record.AddSourceLocation(Loc: C->getColonLoc());
8074 Record.AddStmt(S: C->getCondition());
8075 Record.AddSourceLocation(Loc: C->getLParenLoc());
8076}
8077
8078void OMPClauseWriter::VisitOMPFinalClause(OMPFinalClause *C) {
8079 VisitOMPClauseWithPreInit(C);
8080 Record.AddStmt(S: C->getCondition());
8081 Record.AddSourceLocation(Loc: C->getLParenLoc());
8082}
8083
8084void OMPClauseWriter::VisitOMPNumThreadsClause(OMPNumThreadsClause *C) {
8085 Record.push_back(N: C->varlist_size());
8086 Record.writeEnum(value: C->getPrescriptivenessModifier());
8087 Record.AddSourceLocation(Loc: C->getPrescriptivenessModifierLoc());
8088 Record.writeEnum(value: C->getDimsModifier());
8089 Record.AddSourceLocation(Loc: C->getDimsModifierLoc());
8090 Record.AddStmt(S: C->getDimsModifierExpr());
8091 VisitOMPClauseWithPreInit(C);
8092 Record.AddSourceLocation(Loc: C->getLParenLoc());
8093 for (auto *VE : C->varlist())
8094 Record.AddStmt(S: VE);
8095}
8096
8097void OMPClauseWriter::VisitOMPSafelenClause(OMPSafelenClause *C) {
8098 Record.AddStmt(S: C->getSafelen());
8099 Record.AddSourceLocation(Loc: C->getLParenLoc());
8100}
8101
8102void OMPClauseWriter::VisitOMPSimdlenClause(OMPSimdlenClause *C) {
8103 Record.AddStmt(S: C->getSimdlen());
8104 Record.AddSourceLocation(Loc: C->getLParenLoc());
8105}
8106
8107void OMPClauseWriter::VisitOMPSizesClause(OMPSizesClause *C) {
8108 Record.push_back(N: C->getNumSizes());
8109 for (Expr *Size : C->getSizesRefs())
8110 Record.AddStmt(S: Size);
8111 Record.AddSourceLocation(Loc: C->getLParenLoc());
8112}
8113
8114void OMPClauseWriter::VisitOMPCountsClause(OMPCountsClause *C) {
8115 Record.push_back(N: C->getNumCounts());
8116 Record.push_back(N: C->hasOmpFill());
8117 if (C->hasOmpFill())
8118 Record.push_back(N: *C->getOmpFillIndex());
8119 Record.AddSourceLocation(Loc: C->getOmpFillLoc());
8120 for (Expr *Count : C->getCountsRefs())
8121 Record.AddStmt(S: Count);
8122 Record.AddSourceLocation(Loc: C->getLParenLoc());
8123}
8124
8125void OMPClauseWriter::VisitOMPPermutationClause(OMPPermutationClause *C) {
8126 Record.push_back(N: C->getNumLoops());
8127 for (Expr *Size : C->getArgsRefs())
8128 Record.AddStmt(S: Size);
8129 Record.AddSourceLocation(Loc: C->getLParenLoc());
8130}
8131
8132void OMPClauseWriter::VisitOMPFullClause(OMPFullClause *C) {}
8133
8134void OMPClauseWriter::VisitOMPPartialClause(OMPPartialClause *C) {
8135 Record.AddStmt(S: C->getFactor());
8136 Record.AddSourceLocation(Loc: C->getLParenLoc());
8137}
8138
8139void OMPClauseWriter::VisitOMPLoopRangeClause(OMPLoopRangeClause *C) {
8140 Record.AddStmt(S: C->getFirst());
8141 Record.AddStmt(S: C->getCount());
8142 Record.AddSourceLocation(Loc: C->getLParenLoc());
8143 Record.AddSourceLocation(Loc: C->getFirstLoc());
8144 Record.AddSourceLocation(Loc: C->getCountLoc());
8145}
8146
8147void OMPClauseWriter::VisitOMPAllocatorClause(OMPAllocatorClause *C) {
8148 Record.AddStmt(S: C->getAllocator());
8149 Record.AddSourceLocation(Loc: C->getLParenLoc());
8150}
8151
8152void OMPClauseWriter::VisitOMPCollapseClause(OMPCollapseClause *C) {
8153 Record.AddStmt(S: C->getNumForLoops());
8154 Record.AddSourceLocation(Loc: C->getLParenLoc());
8155}
8156
8157void OMPClauseWriter::VisitOMPDetachClause(OMPDetachClause *C) {
8158 Record.AddStmt(S: C->getEventHandler());
8159 Record.AddSourceLocation(Loc: C->getLParenLoc());
8160}
8161
8162void OMPClauseWriter::VisitOMPDefaultClause(OMPDefaultClause *C) {
8163 Record.push_back(N: unsigned(C->getDefaultKind()));
8164 Record.AddSourceLocation(Loc: C->getLParenLoc());
8165 Record.AddSourceLocation(Loc: C->getDefaultKindKwLoc());
8166 Record.push_back(N: unsigned(C->getDefaultVC()));
8167 Record.AddSourceLocation(Loc: C->getDefaultVCLoc());
8168}
8169
8170void OMPClauseWriter::VisitOMPThreadsetClause(OMPThreadsetClause *C) {
8171 Record.AddSourceLocation(Loc: C->getLParenLoc());
8172 Record.AddSourceLocation(Loc: C->getThreadsetKindLoc());
8173 Record.writeEnum(value: C->getThreadsetKind());
8174}
8175
8176void OMPClauseWriter::VisitOMPTransparentClause(OMPTransparentClause *C) {
8177 Record.AddSourceLocation(Loc: C->getLParenLoc());
8178 Record.AddStmt(S: C->getImpexType());
8179}
8180
8181void OMPClauseWriter::VisitOMPProcBindClause(OMPProcBindClause *C) {
8182 Record.push_back(N: unsigned(C->getProcBindKind()));
8183 Record.AddSourceLocation(Loc: C->getLParenLoc());
8184 Record.AddSourceLocation(Loc: C->getProcBindKindKwLoc());
8185}
8186
8187void OMPClauseWriter::VisitOMPScheduleClause(OMPScheduleClause *C) {
8188 VisitOMPClauseWithPreInit(C);
8189 Record.push_back(N: C->getScheduleKind());
8190 Record.push_back(N: C->getFirstScheduleModifier());
8191 Record.push_back(N: C->getSecondScheduleModifier());
8192 Record.AddStmt(S: C->getChunkSize());
8193 Record.AddSourceLocation(Loc: C->getLParenLoc());
8194 Record.AddSourceLocation(Loc: C->getFirstScheduleModifierLoc());
8195 Record.AddSourceLocation(Loc: C->getSecondScheduleModifierLoc());
8196 Record.AddSourceLocation(Loc: C->getScheduleKindLoc());
8197 Record.AddSourceLocation(Loc: C->getCommaLoc());
8198}
8199
8200void OMPClauseWriter::VisitOMPOrderedClause(OMPOrderedClause *C) {
8201 Record.push_back(N: C->getLoopNumIterations().size());
8202 Record.AddStmt(S: C->getNumForLoops());
8203 for (Expr *NumIter : C->getLoopNumIterations())
8204 Record.AddStmt(S: NumIter);
8205 for (unsigned I = 0, E = C->getLoopNumIterations().size(); I <E; ++I)
8206 Record.AddStmt(S: C->getLoopCounter(NumLoop: I));
8207 Record.AddSourceLocation(Loc: C->getLParenLoc());
8208}
8209
8210void OMPClauseWriter::VisitOMPNowaitClause(OMPNowaitClause *C) {
8211 Record.AddStmt(S: C->getCondition());
8212 Record.AddSourceLocation(Loc: C->getLParenLoc());
8213}
8214
8215void OMPClauseWriter::VisitOMPUntiedClause(OMPUntiedClause *) {}
8216
8217void OMPClauseWriter::VisitOMPMergeableClause(OMPMergeableClause *) {}
8218
8219void OMPClauseWriter::VisitOMPReadClause(OMPReadClause *) {}
8220
8221void OMPClauseWriter::VisitOMPWriteClause(OMPWriteClause *) {}
8222
8223void OMPClauseWriter::VisitOMPUpdateClause(OMPUpdateClause *) {}
8224
8225void OMPClauseWriter::VisitOMPUpdateDependObjectsClause(
8226 OMPUpdateDependObjectsClause *C) {
8227 Record.AddSourceLocation(Loc: C->getLParenLoc());
8228 Record.AddSourceLocation(Loc: C->getArgumentLoc());
8229 Record.writeEnum(value: C->getDependencyKind());
8230}
8231
8232void OMPClauseWriter::VisitOMPCaptureClause(OMPCaptureClause *) {}
8233
8234void OMPClauseWriter::VisitOMPCompareClause(OMPCompareClause *) {}
8235
8236// Save the parameter of fail clause.
8237void OMPClauseWriter::VisitOMPFailClause(OMPFailClause *C) {
8238 Record.AddSourceLocation(Loc: C->getLParenLoc());
8239 Record.AddSourceLocation(Loc: C->getFailParameterLoc());
8240 Record.writeEnum(value: C->getFailParameter());
8241}
8242
8243void OMPClauseWriter::VisitOMPSeqCstClause(OMPSeqCstClause *) {}
8244
8245void OMPClauseWriter::VisitOMPAcqRelClause(OMPAcqRelClause *) {}
8246
8247void OMPClauseWriter::VisitOMPAbsentClause(OMPAbsentClause *C) {
8248 Record.push_back(N: static_cast<uint64_t>(C->getDirectiveKinds().size()));
8249 Record.AddSourceLocation(Loc: C->getLParenLoc());
8250 for (auto K : C->getDirectiveKinds()) {
8251 Record.writeEnum(value: K);
8252 }
8253}
8254
8255void OMPClauseWriter::VisitOMPHoldsClause(OMPHoldsClause *C) {
8256 Record.AddStmt(S: C->getExpr());
8257 Record.AddSourceLocation(Loc: C->getLParenLoc());
8258}
8259
8260void OMPClauseWriter::VisitOMPContainsClause(OMPContainsClause *C) {
8261 Record.push_back(N: static_cast<uint64_t>(C->getDirectiveKinds().size()));
8262 Record.AddSourceLocation(Loc: C->getLParenLoc());
8263 for (auto K : C->getDirectiveKinds()) {
8264 Record.writeEnum(value: K);
8265 }
8266}
8267
8268void OMPClauseWriter::VisitOMPNoOpenMPClause(OMPNoOpenMPClause *) {}
8269
8270void OMPClauseWriter::VisitOMPNoOpenMPRoutinesClause(
8271 OMPNoOpenMPRoutinesClause *) {}
8272
8273void OMPClauseWriter::VisitOMPNoOpenMPConstructsClause(
8274 OMPNoOpenMPConstructsClause *) {}
8275
8276void OMPClauseWriter::VisitOMPNoParallelismClause(OMPNoParallelismClause *) {}
8277
8278void OMPClauseWriter::VisitOMPAcquireClause(OMPAcquireClause *) {}
8279
8280void OMPClauseWriter::VisitOMPReleaseClause(OMPReleaseClause *) {}
8281
8282void OMPClauseWriter::VisitOMPRelaxedClause(OMPRelaxedClause *) {}
8283
8284void OMPClauseWriter::VisitOMPWeakClause(OMPWeakClause *) {}
8285
8286void OMPClauseWriter::VisitOMPThreadsClause(OMPThreadsClause *) {}
8287
8288void OMPClauseWriter::VisitOMPSIMDClause(OMPSIMDClause *) {}
8289
8290void OMPClauseWriter::VisitOMPNogroupClause(OMPNogroupClause *) {}
8291
8292void OMPClauseWriter::VisitOMPInitClause(OMPInitClause *C) {
8293 // Sizes for CreateEmpty on the read side: varlist_size = 1 + NumPrefs, then
8294 // NumAttrs (total attrs across all pref-specs).
8295 Record.push_back(N: C->varlist_size());
8296 Record.push_back(N: C->attrs().size());
8297 // Varlist (interop var + Fr block).
8298 for (Expr *VE : C->varlist())
8299 Record.AddStmt(S: VE);
8300 Record.writeBool(Value: C->getIsTarget());
8301 Record.writeBool(Value: C->getIsTargetSync());
8302 Record.writeBool(Value: C->hasPreferAttrs());
8303 // Per-pref-spec: attr count + that many attr exprs, in order.
8304 for (OMPInitClause::PrefView P : C->prefs()) {
8305 Record.push_back(N: P.Attrs.size());
8306 for (Expr *A : P.Attrs)
8307 Record.AddStmt(S: A);
8308 }
8309 Record.AddSourceLocation(Loc: C->getLParenLoc());
8310 Record.AddSourceLocation(Loc: C->getVarLoc());
8311}
8312
8313void OMPClauseWriter::VisitOMPUseClause(OMPUseClause *C) {
8314 Record.AddStmt(S: C->getInteropVar());
8315 Record.AddSourceLocation(Loc: C->getLParenLoc());
8316 Record.AddSourceLocation(Loc: C->getVarLoc());
8317}
8318
8319void OMPClauseWriter::VisitOMPDestroyClause(OMPDestroyClause *C) {
8320 Record.AddStmt(S: C->getInteropVar());
8321 Record.AddSourceLocation(Loc: C->getLParenLoc());
8322 Record.AddSourceLocation(Loc: C->getVarLoc());
8323}
8324
8325void OMPClauseWriter::VisitOMPNovariantsClause(OMPNovariantsClause *C) {
8326 VisitOMPClauseWithPreInit(C);
8327 Record.AddStmt(S: C->getCondition());
8328 Record.AddSourceLocation(Loc: C->getLParenLoc());
8329}
8330
8331void OMPClauseWriter::VisitOMPNocontextClause(OMPNocontextClause *C) {
8332 VisitOMPClauseWithPreInit(C);
8333 Record.AddStmt(S: C->getCondition());
8334 Record.AddSourceLocation(Loc: C->getLParenLoc());
8335}
8336
8337void OMPClauseWriter::VisitOMPFilterClause(OMPFilterClause *C) {
8338 VisitOMPClauseWithPreInit(C);
8339 Record.AddStmt(S: C->getThreadID());
8340 Record.AddSourceLocation(Loc: C->getLParenLoc());
8341}
8342
8343void OMPClauseWriter::VisitOMPAlignClause(OMPAlignClause *C) {
8344 Record.AddStmt(S: C->getAlignment());
8345 Record.AddSourceLocation(Loc: C->getLParenLoc());
8346}
8347
8348void OMPClauseWriter::VisitOMPPrivateClause(OMPPrivateClause *C) {
8349 Record.push_back(N: C->varlist_size());
8350 Record.AddSourceLocation(Loc: C->getLParenLoc());
8351 for (auto *VE : C->varlist()) {
8352 Record.AddStmt(S: VE);
8353 }
8354 for (auto *VE : C->private_copies()) {
8355 Record.AddStmt(S: VE);
8356 }
8357}
8358
8359void OMPClauseWriter::VisitOMPFirstprivateClause(OMPFirstprivateClause *C) {
8360 Record.push_back(N: C->varlist_size());
8361 VisitOMPClauseWithPreInit(C);
8362 Record.AddSourceLocation(Loc: C->getLParenLoc());
8363 for (auto *VE : C->varlist()) {
8364 Record.AddStmt(S: VE);
8365 }
8366 for (auto *VE : C->private_copies()) {
8367 Record.AddStmt(S: VE);
8368 }
8369 for (auto *VE : C->inits()) {
8370 Record.AddStmt(S: VE);
8371 }
8372}
8373
8374void OMPClauseWriter::VisitOMPLastprivateClause(OMPLastprivateClause *C) {
8375 Record.push_back(N: C->varlist_size());
8376 VisitOMPClauseWithPostUpdate(C);
8377 Record.AddSourceLocation(Loc: C->getLParenLoc());
8378 Record.writeEnum(value: C->getKind());
8379 Record.AddSourceLocation(Loc: C->getKindLoc());
8380 Record.AddSourceLocation(Loc: C->getColonLoc());
8381 for (auto *VE : C->varlist())
8382 Record.AddStmt(S: VE);
8383 for (auto *E : C->private_copies())
8384 Record.AddStmt(S: E);
8385 for (auto *E : C->source_exprs())
8386 Record.AddStmt(S: E);
8387 for (auto *E : C->destination_exprs())
8388 Record.AddStmt(S: E);
8389 for (auto *E : C->assignment_ops())
8390 Record.AddStmt(S: E);
8391}
8392
8393void OMPClauseWriter::VisitOMPSharedClause(OMPSharedClause *C) {
8394 Record.push_back(N: C->varlist_size());
8395 Record.AddSourceLocation(Loc: C->getLParenLoc());
8396 for (auto *VE : C->varlist())
8397 Record.AddStmt(S: VE);
8398}
8399
8400void OMPClauseWriter::VisitOMPReductionClause(OMPReductionClause *C) {
8401 Record.push_back(N: C->varlist_size());
8402 Record.writeEnum(value: C->getModifier());
8403 VisitOMPClauseWithPostUpdate(C);
8404 Record.AddSourceLocation(Loc: C->getLParenLoc());
8405 Record.AddSourceLocation(Loc: C->getModifierLoc());
8406 Record.AddSourceLocation(Loc: C->getColonLoc());
8407 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getQualifierLoc());
8408 Record.AddDeclarationNameInfo(NameInfo: C->getNameInfo());
8409 for (auto *VE : C->varlist())
8410 Record.AddStmt(S: VE);
8411 for (auto *VE : C->privates())
8412 Record.AddStmt(S: VE);
8413 for (auto *E : C->lhs_exprs())
8414 Record.AddStmt(S: E);
8415 for (auto *E : C->rhs_exprs())
8416 Record.AddStmt(S: E);
8417 for (auto *E : C->reduction_ops())
8418 Record.AddStmt(S: E);
8419 if (C->getModifier() == clang::OMPC_REDUCTION_inscan) {
8420 for (auto *E : C->copy_ops())
8421 Record.AddStmt(S: E);
8422 for (auto *E : C->copy_array_temps())
8423 Record.AddStmt(S: E);
8424 for (auto *E : C->copy_array_elems())
8425 Record.AddStmt(S: E);
8426 }
8427 auto PrivateFlags = C->private_var_reduction_flags();
8428 Record.push_back(N: std::distance(first: PrivateFlags.begin(), last: PrivateFlags.end()));
8429 for (bool Flag : PrivateFlags)
8430 Record.push_back(N: Flag);
8431}
8432
8433void OMPClauseWriter::VisitOMPTaskReductionClause(OMPTaskReductionClause *C) {
8434 Record.push_back(N: C->varlist_size());
8435 VisitOMPClauseWithPostUpdate(C);
8436 Record.AddSourceLocation(Loc: C->getLParenLoc());
8437 Record.AddSourceLocation(Loc: C->getColonLoc());
8438 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getQualifierLoc());
8439 Record.AddDeclarationNameInfo(NameInfo: C->getNameInfo());
8440 for (auto *VE : C->varlist())
8441 Record.AddStmt(S: VE);
8442 for (auto *VE : C->privates())
8443 Record.AddStmt(S: VE);
8444 for (auto *E : C->lhs_exprs())
8445 Record.AddStmt(S: E);
8446 for (auto *E : C->rhs_exprs())
8447 Record.AddStmt(S: E);
8448 for (auto *E : C->reduction_ops())
8449 Record.AddStmt(S: E);
8450}
8451
8452void OMPClauseWriter::VisitOMPInReductionClause(OMPInReductionClause *C) {
8453 Record.push_back(N: C->varlist_size());
8454 VisitOMPClauseWithPostUpdate(C);
8455 Record.AddSourceLocation(Loc: C->getLParenLoc());
8456 Record.AddSourceLocation(Loc: C->getColonLoc());
8457 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getQualifierLoc());
8458 Record.AddDeclarationNameInfo(NameInfo: C->getNameInfo());
8459 for (auto *VE : C->varlist())
8460 Record.AddStmt(S: VE);
8461 for (auto *VE : C->privates())
8462 Record.AddStmt(S: VE);
8463 for (auto *E : C->lhs_exprs())
8464 Record.AddStmt(S: E);
8465 for (auto *E : C->rhs_exprs())
8466 Record.AddStmt(S: E);
8467 for (auto *E : C->reduction_ops())
8468 Record.AddStmt(S: E);
8469 for (auto *E : C->taskgroup_descriptors())
8470 Record.AddStmt(S: E);
8471}
8472
8473void OMPClauseWriter::VisitOMPLinearClause(OMPLinearClause *C) {
8474 Record.push_back(N: C->varlist_size());
8475 VisitOMPClauseWithPostUpdate(C);
8476 Record.AddSourceLocation(Loc: C->getLParenLoc());
8477 Record.AddSourceLocation(Loc: C->getColonLoc());
8478 Record.push_back(N: C->getModifier());
8479 Record.AddSourceLocation(Loc: C->getModifierLoc());
8480 for (auto *VE : C->varlist()) {
8481 Record.AddStmt(S: VE);
8482 }
8483 for (auto *VE : C->privates()) {
8484 Record.AddStmt(S: VE);
8485 }
8486 for (auto *VE : C->inits()) {
8487 Record.AddStmt(S: VE);
8488 }
8489 for (auto *VE : C->updates()) {
8490 Record.AddStmt(S: VE);
8491 }
8492 for (auto *VE : C->finals()) {
8493 Record.AddStmt(S: VE);
8494 }
8495 Record.AddStmt(S: C->getStep());
8496 Record.AddStmt(S: C->getCalcStep());
8497 for (auto *VE : C->used_expressions())
8498 Record.AddStmt(S: VE);
8499}
8500
8501void OMPClauseWriter::VisitOMPAlignedClause(OMPAlignedClause *C) {
8502 Record.push_back(N: C->varlist_size());
8503 Record.AddSourceLocation(Loc: C->getLParenLoc());
8504 Record.AddSourceLocation(Loc: C->getColonLoc());
8505 for (auto *VE : C->varlist())
8506 Record.AddStmt(S: VE);
8507 Record.AddStmt(S: C->getAlignment());
8508}
8509
8510void OMPClauseWriter::VisitOMPCopyinClause(OMPCopyinClause *C) {
8511 Record.push_back(N: C->varlist_size());
8512 Record.AddSourceLocation(Loc: C->getLParenLoc());
8513 for (auto *VE : C->varlist())
8514 Record.AddStmt(S: VE);
8515 for (auto *E : C->source_exprs())
8516 Record.AddStmt(S: E);
8517 for (auto *E : C->destination_exprs())
8518 Record.AddStmt(S: E);
8519 for (auto *E : C->assignment_ops())
8520 Record.AddStmt(S: E);
8521}
8522
8523void OMPClauseWriter::VisitOMPCopyprivateClause(OMPCopyprivateClause *C) {
8524 Record.push_back(N: C->varlist_size());
8525 Record.AddSourceLocation(Loc: C->getLParenLoc());
8526 for (auto *VE : C->varlist())
8527 Record.AddStmt(S: VE);
8528 for (auto *E : C->source_exprs())
8529 Record.AddStmt(S: E);
8530 for (auto *E : C->destination_exprs())
8531 Record.AddStmt(S: E);
8532 for (auto *E : C->assignment_ops())
8533 Record.AddStmt(S: E);
8534}
8535
8536void OMPClauseWriter::VisitOMPFlushClause(OMPFlushClause *C) {
8537 Record.push_back(N: C->varlist_size());
8538 Record.AddSourceLocation(Loc: C->getLParenLoc());
8539 for (auto *VE : C->varlist())
8540 Record.AddStmt(S: VE);
8541}
8542
8543void OMPClauseWriter::VisitOMPDepobjClause(OMPDepobjClause *C) {
8544 Record.AddStmt(S: C->getDepobj());
8545 Record.AddSourceLocation(Loc: C->getLParenLoc());
8546}
8547
8548void OMPClauseWriter::VisitOMPDependClause(OMPDependClause *C) {
8549 Record.push_back(N: C->varlist_size());
8550 Record.push_back(N: C->getNumLoops());
8551 Record.AddSourceLocation(Loc: C->getLParenLoc());
8552 Record.AddStmt(S: C->getModifier());
8553 Record.push_back(N: C->getDependencyKind());
8554 Record.AddSourceLocation(Loc: C->getDependencyLoc());
8555 Record.AddSourceLocation(Loc: C->getColonLoc());
8556 Record.AddSourceLocation(Loc: C->getOmpAllMemoryLoc());
8557 for (auto *VE : C->varlist())
8558 Record.AddStmt(S: VE);
8559 for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I)
8560 Record.AddStmt(S: C->getLoopData(NumLoop: I));
8561}
8562
8563void OMPClauseWriter::VisitOMPDeviceClause(OMPDeviceClause *C) {
8564 VisitOMPClauseWithPreInit(C);
8565 Record.writeEnum(value: C->getModifier());
8566 Record.AddStmt(S: C->getDevice());
8567 Record.AddSourceLocation(Loc: C->getModifierLoc());
8568 Record.AddSourceLocation(Loc: C->getLParenLoc());
8569}
8570
8571void OMPClauseWriter::VisitOMPMapClause(OMPMapClause *C) {
8572 Record.push_back(N: C->varlist_size());
8573 Record.push_back(N: C->getUniqueDeclarationsNum());
8574 Record.push_back(N: C->getTotalComponentListNum());
8575 Record.push_back(N: C->getTotalComponentsNum());
8576 Record.AddSourceLocation(Loc: C->getLParenLoc());
8577 bool HasIteratorModifier = false;
8578 for (unsigned I = 0; I < NumberOfOMPMapClauseModifiers; ++I) {
8579 Record.push_back(N: C->getMapTypeModifier(Cnt: I));
8580 Record.AddSourceLocation(Loc: C->getMapTypeModifierLoc(Cnt: I));
8581 if (C->getMapTypeModifier(Cnt: I) == OMPC_MAP_MODIFIER_iterator)
8582 HasIteratorModifier = true;
8583 }
8584 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getMapperQualifierLoc());
8585 Record.AddDeclarationNameInfo(NameInfo: C->getMapperIdInfo());
8586 Record.push_back(N: C->getMapType());
8587 Record.AddSourceLocation(Loc: C->getMapLoc());
8588 Record.AddSourceLocation(Loc: C->getColonLoc());
8589 for (auto *E : C->varlist())
8590 Record.AddStmt(S: E);
8591 for (auto *E : C->mapperlists())
8592 Record.AddStmt(S: E);
8593 if (HasIteratorModifier)
8594 Record.AddStmt(S: C->getIteratorModifier());
8595 for (auto *D : C->all_decls())
8596 Record.AddDeclRef(D);
8597 for (auto N : C->all_num_lists())
8598 Record.push_back(N);
8599 for (auto N : C->all_lists_sizes())
8600 Record.push_back(N);
8601 for (auto &M : C->all_components()) {
8602 Record.AddStmt(S: M.getAssociatedExpression());
8603 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8604 }
8605}
8606
8607void OMPClauseWriter::VisitOMPAllocateClause(OMPAllocateClause *C) {
8608 Record.push_back(N: C->varlist_size());
8609 Record.writeEnum(value: C->getFirstAllocateModifier());
8610 Record.writeEnum(value: C->getSecondAllocateModifier());
8611 Record.AddSourceLocation(Loc: C->getLParenLoc());
8612 Record.AddSourceLocation(Loc: C->getColonLoc());
8613 Record.AddStmt(S: C->getAllocator());
8614 Record.AddStmt(S: C->getAlignment());
8615 for (auto *VE : C->varlist())
8616 Record.AddStmt(S: VE);
8617}
8618
8619void OMPClauseWriter::VisitOMPNumTeamsClause(OMPNumTeamsClause *C) {
8620 Record.push_back(N: C->varlist_size());
8621 Record.writeEnum(value: C->getModifier());
8622 Record.AddSourceLocation(Loc: C->getModifierLoc());
8623 Record.AddStmt(S: C->getModifierExpr());
8624 VisitOMPClauseWithPreInit(C);
8625 Record.AddSourceLocation(Loc: C->getLParenLoc());
8626 for (auto *VE : C->varlist())
8627 Record.AddStmt(S: VE);
8628}
8629
8630void OMPClauseWriter::VisitOMPThreadLimitClause(OMPThreadLimitClause *C) {
8631 Record.push_back(N: C->varlist_size());
8632 Record.writeEnum(value: C->getModifier());
8633 Record.AddSourceLocation(Loc: C->getModifierLoc());
8634 Record.AddStmt(S: C->getModifierExpr());
8635 VisitOMPClauseWithPreInit(C);
8636 Record.AddSourceLocation(Loc: C->getLParenLoc());
8637 for (auto *VE : C->varlist())
8638 Record.AddStmt(S: VE);
8639}
8640
8641void OMPClauseWriter::VisitOMPPriorityClause(OMPPriorityClause *C) {
8642 VisitOMPClauseWithPreInit(C);
8643 Record.AddStmt(S: C->getPriority());
8644 Record.AddSourceLocation(Loc: C->getLParenLoc());
8645}
8646
8647void OMPClauseWriter::VisitOMPGrainsizeClause(OMPGrainsizeClause *C) {
8648 VisitOMPClauseWithPreInit(C);
8649 Record.writeEnum(value: C->getModifier());
8650 Record.AddStmt(S: C->getGrainsize());
8651 Record.AddSourceLocation(Loc: C->getModifierLoc());
8652 Record.AddSourceLocation(Loc: C->getLParenLoc());
8653}
8654
8655void OMPClauseWriter::VisitOMPNumTasksClause(OMPNumTasksClause *C) {
8656 VisitOMPClauseWithPreInit(C);
8657 Record.writeEnum(value: C->getModifier());
8658 Record.AddStmt(S: C->getNumTasks());
8659 Record.AddSourceLocation(Loc: C->getModifierLoc());
8660 Record.AddSourceLocation(Loc: C->getLParenLoc());
8661}
8662
8663void OMPClauseWriter::VisitOMPHintClause(OMPHintClause *C) {
8664 Record.AddStmt(S: C->getHint());
8665 Record.AddSourceLocation(Loc: C->getLParenLoc());
8666}
8667
8668void OMPClauseWriter::VisitOMPDistScheduleClause(OMPDistScheduleClause *C) {
8669 VisitOMPClauseWithPreInit(C);
8670 Record.push_back(N: C->getDistScheduleKind());
8671 Record.AddStmt(S: C->getChunkSize());
8672 Record.AddSourceLocation(Loc: C->getLParenLoc());
8673 Record.AddSourceLocation(Loc: C->getDistScheduleKindLoc());
8674 Record.AddSourceLocation(Loc: C->getCommaLoc());
8675}
8676
8677void OMPClauseWriter::VisitOMPDefaultmapClause(OMPDefaultmapClause *C) {
8678 Record.push_back(N: C->getDefaultmapKind());
8679 Record.push_back(N: C->getDefaultmapModifier());
8680 Record.AddSourceLocation(Loc: C->getLParenLoc());
8681 Record.AddSourceLocation(Loc: C->getDefaultmapModifierLoc());
8682 Record.AddSourceLocation(Loc: C->getDefaultmapKindLoc());
8683}
8684
8685void OMPClauseWriter::VisitOMPToClause(OMPToClause *C) {
8686 Record.push_back(N: C->varlist_size());
8687 Record.push_back(N: C->getUniqueDeclarationsNum());
8688 Record.push_back(N: C->getTotalComponentListNum());
8689 Record.push_back(N: C->getTotalComponentsNum());
8690 Record.AddSourceLocation(Loc: C->getLParenLoc());
8691 for (unsigned I = 0; I < NumberOfOMPMotionModifiers; ++I) {
8692 Record.push_back(N: C->getMotionModifier(Cnt: I));
8693 Record.AddSourceLocation(Loc: C->getMotionModifierLoc(Cnt: I));
8694 if (C->getMotionModifier(Cnt: I) == OMPC_MOTION_MODIFIER_iterator)
8695 Record.AddStmt(S: C->getIteratorModifier());
8696 }
8697 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getMapperQualifierLoc());
8698 Record.AddDeclarationNameInfo(NameInfo: C->getMapperIdInfo());
8699 Record.AddSourceLocation(Loc: C->getColonLoc());
8700 for (auto *E : C->varlist())
8701 Record.AddStmt(S: E);
8702 for (auto *E : C->mapperlists())
8703 Record.AddStmt(S: E);
8704 for (auto *D : C->all_decls())
8705 Record.AddDeclRef(D);
8706 for (auto N : C->all_num_lists())
8707 Record.push_back(N);
8708 for (auto N : C->all_lists_sizes())
8709 Record.push_back(N);
8710 for (auto &M : C->all_components()) {
8711 Record.AddStmt(S: M.getAssociatedExpression());
8712 Record.writeBool(Value: M.isNonContiguous());
8713 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8714 }
8715}
8716
8717void OMPClauseWriter::VisitOMPFromClause(OMPFromClause *C) {
8718 Record.push_back(N: C->varlist_size());
8719 Record.push_back(N: C->getUniqueDeclarationsNum());
8720 Record.push_back(N: C->getTotalComponentListNum());
8721 Record.push_back(N: C->getTotalComponentsNum());
8722 Record.AddSourceLocation(Loc: C->getLParenLoc());
8723 for (unsigned I = 0; I < NumberOfOMPMotionModifiers; ++I) {
8724 Record.push_back(N: C->getMotionModifier(Cnt: I));
8725 Record.AddSourceLocation(Loc: C->getMotionModifierLoc(Cnt: I));
8726 if (C->getMotionModifier(Cnt: I) == OMPC_MOTION_MODIFIER_iterator)
8727 Record.AddStmt(S: C->getIteratorModifier());
8728 }
8729 Record.AddNestedNameSpecifierLoc(QualifierLoc: C->getMapperQualifierLoc());
8730 Record.AddDeclarationNameInfo(NameInfo: C->getMapperIdInfo());
8731 Record.AddSourceLocation(Loc: C->getColonLoc());
8732 for (auto *E : C->varlist())
8733 Record.AddStmt(S: E);
8734 for (auto *E : C->mapperlists())
8735 Record.AddStmt(S: E);
8736 for (auto *D : C->all_decls())
8737 Record.AddDeclRef(D);
8738 for (auto N : C->all_num_lists())
8739 Record.push_back(N);
8740 for (auto N : C->all_lists_sizes())
8741 Record.push_back(N);
8742 for (auto &M : C->all_components()) {
8743 Record.AddStmt(S: M.getAssociatedExpression());
8744 Record.writeBool(Value: M.isNonContiguous());
8745 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8746 }
8747}
8748
8749void OMPClauseWriter::VisitOMPUseDevicePtrClause(OMPUseDevicePtrClause *C) {
8750 Record.push_back(N: C->varlist_size());
8751 Record.push_back(N: C->getUniqueDeclarationsNum());
8752 Record.push_back(N: C->getTotalComponentListNum());
8753 Record.push_back(N: C->getTotalComponentsNum());
8754 Record.AddSourceLocation(Loc: C->getLParenLoc());
8755 Record.writeEnum(value: C->getFallbackModifier());
8756 Record.AddSourceLocation(Loc: C->getFallbackModifierLoc());
8757 for (auto *E : C->varlist())
8758 Record.AddStmt(S: E);
8759 for (auto *VE : C->private_copies())
8760 Record.AddStmt(S: VE);
8761 for (auto *VE : C->inits())
8762 Record.AddStmt(S: VE);
8763 for (auto *D : C->all_decls())
8764 Record.AddDeclRef(D);
8765 for (auto N : C->all_num_lists())
8766 Record.push_back(N);
8767 for (auto N : C->all_lists_sizes())
8768 Record.push_back(N);
8769 for (auto &M : C->all_components()) {
8770 Record.AddStmt(S: M.getAssociatedExpression());
8771 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8772 }
8773}
8774
8775void OMPClauseWriter::VisitOMPUseDeviceAddrClause(OMPUseDeviceAddrClause *C) {
8776 Record.push_back(N: C->varlist_size());
8777 Record.push_back(N: C->getUniqueDeclarationsNum());
8778 Record.push_back(N: C->getTotalComponentListNum());
8779 Record.push_back(N: C->getTotalComponentsNum());
8780 Record.AddSourceLocation(Loc: C->getLParenLoc());
8781 for (auto *E : C->varlist())
8782 Record.AddStmt(S: E);
8783 for (auto *D : C->all_decls())
8784 Record.AddDeclRef(D);
8785 for (auto N : C->all_num_lists())
8786 Record.push_back(N);
8787 for (auto N : C->all_lists_sizes())
8788 Record.push_back(N);
8789 for (auto &M : C->all_components()) {
8790 Record.AddStmt(S: M.getAssociatedExpression());
8791 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8792 }
8793}
8794
8795void OMPClauseWriter::VisitOMPIsDevicePtrClause(OMPIsDevicePtrClause *C) {
8796 Record.push_back(N: C->varlist_size());
8797 Record.push_back(N: C->getUniqueDeclarationsNum());
8798 Record.push_back(N: C->getTotalComponentListNum());
8799 Record.push_back(N: C->getTotalComponentsNum());
8800 Record.AddSourceLocation(Loc: C->getLParenLoc());
8801 for (auto *E : C->varlist())
8802 Record.AddStmt(S: E);
8803 for (auto *D : C->all_decls())
8804 Record.AddDeclRef(D);
8805 for (auto N : C->all_num_lists())
8806 Record.push_back(N);
8807 for (auto N : C->all_lists_sizes())
8808 Record.push_back(N);
8809 for (auto &M : C->all_components()) {
8810 Record.AddStmt(S: M.getAssociatedExpression());
8811 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8812 }
8813}
8814
8815void OMPClauseWriter::VisitOMPHasDeviceAddrClause(OMPHasDeviceAddrClause *C) {
8816 Record.push_back(N: C->varlist_size());
8817 Record.push_back(N: C->getUniqueDeclarationsNum());
8818 Record.push_back(N: C->getTotalComponentListNum());
8819 Record.push_back(N: C->getTotalComponentsNum());
8820 Record.AddSourceLocation(Loc: C->getLParenLoc());
8821 for (auto *E : C->varlist())
8822 Record.AddStmt(S: E);
8823 for (auto *D : C->all_decls())
8824 Record.AddDeclRef(D);
8825 for (auto N : C->all_num_lists())
8826 Record.push_back(N);
8827 for (auto N : C->all_lists_sizes())
8828 Record.push_back(N);
8829 for (auto &M : C->all_components()) {
8830 Record.AddStmt(S: M.getAssociatedExpression());
8831 Record.AddDeclRef(D: M.getAssociatedDeclaration());
8832 }
8833}
8834
8835void OMPClauseWriter::VisitOMPUnifiedAddressClause(OMPUnifiedAddressClause *) {}
8836
8837void OMPClauseWriter::VisitOMPUnifiedSharedMemoryClause(
8838 OMPUnifiedSharedMemoryClause *) {}
8839
8840void OMPClauseWriter::VisitOMPReverseOffloadClause(OMPReverseOffloadClause *) {}
8841
8842void
8843OMPClauseWriter::VisitOMPDynamicAllocatorsClause(OMPDynamicAllocatorsClause *) {
8844}
8845
8846void OMPClauseWriter::VisitOMPAtomicDefaultMemOrderClause(
8847 OMPAtomicDefaultMemOrderClause *C) {
8848 Record.push_back(N: C->getAtomicDefaultMemOrderKind());
8849 Record.AddSourceLocation(Loc: C->getLParenLoc());
8850 Record.AddSourceLocation(Loc: C->getAtomicDefaultMemOrderKindKwLoc());
8851}
8852
8853void OMPClauseWriter::VisitOMPSelfMapsClause(OMPSelfMapsClause *) {}
8854
8855void OMPClauseWriter::VisitOMPAtClause(OMPAtClause *C) {
8856 Record.push_back(N: C->getAtKind());
8857 Record.AddSourceLocation(Loc: C->getLParenLoc());
8858 Record.AddSourceLocation(Loc: C->getAtKindKwLoc());
8859}
8860
8861void OMPClauseWriter::VisitOMPSeverityClause(OMPSeverityClause *C) {
8862 Record.push_back(N: C->getSeverityKind());
8863 Record.AddSourceLocation(Loc: C->getLParenLoc());
8864 Record.AddSourceLocation(Loc: C->getSeverityKindKwLoc());
8865}
8866
8867void OMPClauseWriter::VisitOMPMessageClause(OMPMessageClause *C) {
8868 VisitOMPClauseWithPreInit(C);
8869 Record.AddStmt(S: C->getMessageString());
8870 Record.AddSourceLocation(Loc: C->getLParenLoc());
8871}
8872
8873void OMPClauseWriter::VisitOMPNontemporalClause(OMPNontemporalClause *C) {
8874 Record.push_back(N: C->varlist_size());
8875 Record.AddSourceLocation(Loc: C->getLParenLoc());
8876 for (auto *VE : C->varlist())
8877 Record.AddStmt(S: VE);
8878 for (auto *E : C->private_refs())
8879 Record.AddStmt(S: E);
8880}
8881
8882void OMPClauseWriter::VisitOMPInclusiveClause(OMPInclusiveClause *C) {
8883 Record.push_back(N: C->varlist_size());
8884 Record.AddSourceLocation(Loc: C->getLParenLoc());
8885 for (auto *VE : C->varlist())
8886 Record.AddStmt(S: VE);
8887}
8888
8889void OMPClauseWriter::VisitOMPExclusiveClause(OMPExclusiveClause *C) {
8890 Record.push_back(N: C->varlist_size());
8891 Record.AddSourceLocation(Loc: C->getLParenLoc());
8892 for (auto *VE : C->varlist())
8893 Record.AddStmt(S: VE);
8894}
8895
8896void OMPClauseWriter::VisitOMPOrderClause(OMPOrderClause *C) {
8897 Record.writeEnum(value: C->getKind());
8898 Record.writeEnum(value: C->getModifier());
8899 Record.AddSourceLocation(Loc: C->getLParenLoc());
8900 Record.AddSourceLocation(Loc: C->getKindKwLoc());
8901 Record.AddSourceLocation(Loc: C->getModifierKwLoc());
8902}
8903
8904void OMPClauseWriter::VisitOMPUsesAllocatorsClause(OMPUsesAllocatorsClause *C) {
8905 Record.push_back(N: C->getNumberOfAllocators());
8906 Record.AddSourceLocation(Loc: C->getLParenLoc());
8907 for (unsigned I = 0, E = C->getNumberOfAllocators(); I < E; ++I) {
8908 OMPUsesAllocatorsClause::Data Data = C->getAllocatorData(I);
8909 Record.AddStmt(S: Data.Allocator);
8910 Record.AddStmt(S: Data.AllocatorTraits);
8911 Record.AddSourceLocation(Loc: Data.LParenLoc);
8912 Record.AddSourceLocation(Loc: Data.RParenLoc);
8913 }
8914}
8915
8916void OMPClauseWriter::VisitOMPAffinityClause(OMPAffinityClause *C) {
8917 Record.push_back(N: C->varlist_size());
8918 Record.AddSourceLocation(Loc: C->getLParenLoc());
8919 Record.AddStmt(S: C->getModifier());
8920 Record.AddSourceLocation(Loc: C->getColonLoc());
8921 for (Expr *E : C->varlist())
8922 Record.AddStmt(S: E);
8923}
8924
8925void OMPClauseWriter::VisitOMPBindClause(OMPBindClause *C) {
8926 Record.writeEnum(value: C->getBindKind());
8927 Record.AddSourceLocation(Loc: C->getLParenLoc());
8928 Record.AddSourceLocation(Loc: C->getBindKindLoc());
8929}
8930
8931void OMPClauseWriter::VisitOMPXDynCGroupMemClause(OMPXDynCGroupMemClause *C) {
8932 VisitOMPClauseWithPreInit(C);
8933 Record.AddStmt(S: C->getSize());
8934 Record.AddSourceLocation(Loc: C->getLParenLoc());
8935}
8936
8937void OMPClauseWriter::VisitOMPDynGroupprivateClause(
8938 OMPDynGroupprivateClause *C) {
8939 VisitOMPClauseWithPreInit(C);
8940 Record.push_back(N: C->getDynGroupprivateModifier());
8941 Record.push_back(N: C->getDynGroupprivateFallbackModifier());
8942 Record.AddStmt(S: C->getSize());
8943 Record.AddSourceLocation(Loc: C->getLParenLoc());
8944 Record.AddSourceLocation(Loc: C->getDynGroupprivateModifierLoc());
8945 Record.AddSourceLocation(Loc: C->getDynGroupprivateFallbackModifierLoc());
8946}
8947
8948void OMPClauseWriter::VisitOMPDoacrossClause(OMPDoacrossClause *C) {
8949 Record.push_back(N: C->varlist_size());
8950 Record.push_back(N: C->getNumLoops());
8951 Record.AddSourceLocation(Loc: C->getLParenLoc());
8952 Record.push_back(N: C->getDependenceType());
8953 Record.AddSourceLocation(Loc: C->getDependenceLoc());
8954 Record.AddSourceLocation(Loc: C->getColonLoc());
8955 for (auto *VE : C->varlist())
8956 Record.AddStmt(S: VE);
8957 for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I)
8958 Record.AddStmt(S: C->getLoopData(NumLoop: I));
8959}
8960
8961void OMPClauseWriter::VisitOMPXAttributeClause(OMPXAttributeClause *C) {
8962 Record.AddAttributes(Attrs: C->getAttrs());
8963 Record.AddSourceLocation(Loc: C->getBeginLoc());
8964 Record.AddSourceLocation(Loc: C->getLParenLoc());
8965 Record.AddSourceLocation(Loc: C->getEndLoc());
8966}
8967
8968void OMPClauseWriter::VisitOMPXBareClause(OMPXBareClause *C) {}
8969
8970void ASTRecordWriter::writeOMPTraitInfo(const OMPTraitInfo *TI) {
8971 writeUInt32(Value: TI->Sets.size());
8972 for (const auto &Set : TI->Sets) {
8973 writeEnum(value: Set.Kind);
8974 writeUInt32(Value: Set.Selectors.size());
8975 for (const auto &Selector : Set.Selectors) {
8976 writeEnum(value: Selector.Kind);
8977 writeBool(Value: Selector.ScoreOrCondition);
8978 if (Selector.ScoreOrCondition)
8979 writeExprRef(value: Selector.ScoreOrCondition);
8980 writeUInt32(Value: Selector.Properties.size());
8981 for (const auto &Property : Selector.Properties)
8982 writeEnum(value: Property.Kind);
8983 }
8984 }
8985}
8986
8987void ASTRecordWriter::writeOMPChildren(OMPChildren *Data) {
8988 if (!Data)
8989 return;
8990 writeUInt32(Value: Data->getNumClauses());
8991 writeUInt32(Value: Data->getNumChildren());
8992 writeBool(Value: Data->hasAssociatedStmt());
8993 for (unsigned I = 0, E = Data->getNumClauses(); I < E; ++I)
8994 writeOMPClause(C: Data->getClauses()[I]);
8995 if (Data->hasAssociatedStmt())
8996 AddStmt(S: Data->getAssociatedStmt());
8997 for (unsigned I = 0, E = Data->getNumChildren(); I < E; ++I)
8998 AddStmt(S: Data->getChildren()[I]);
8999}
9000
9001void ASTRecordWriter::writeOpenACCVarList(const OpenACCClauseWithVarList *C) {
9002 writeUInt32(Value: C->getVarList().size());
9003 for (Expr *E : C->getVarList())
9004 AddStmt(S: E);
9005}
9006
9007void ASTRecordWriter::writeOpenACCIntExprList(ArrayRef<Expr *> Exprs) {
9008 writeUInt32(Value: Exprs.size());
9009 for (Expr *E : Exprs)
9010 AddStmt(S: E);
9011}
9012
9013void ASTRecordWriter::writeOpenACCClause(const OpenACCClause *C) {
9014 writeEnum(value: C->getClauseKind());
9015 writeSourceLocation(Loc: C->getBeginLoc());
9016 writeSourceLocation(Loc: C->getEndLoc());
9017
9018 switch (C->getClauseKind()) {
9019 case OpenACCClauseKind::Default: {
9020 const auto *DC = cast<OpenACCDefaultClause>(Val: C);
9021 writeSourceLocation(Loc: DC->getLParenLoc());
9022 writeEnum(value: DC->getDefaultClauseKind());
9023 return;
9024 }
9025 case OpenACCClauseKind::If: {
9026 const auto *IC = cast<OpenACCIfClause>(Val: C);
9027 writeSourceLocation(Loc: IC->getLParenLoc());
9028 AddStmt(S: const_cast<Expr*>(IC->getConditionExpr()));
9029 return;
9030 }
9031 case OpenACCClauseKind::Self: {
9032 const auto *SC = cast<OpenACCSelfClause>(Val: C);
9033 writeSourceLocation(Loc: SC->getLParenLoc());
9034 writeBool(Value: SC->isConditionExprClause());
9035 if (SC->isConditionExprClause()) {
9036 writeBool(Value: SC->hasConditionExpr());
9037 if (SC->hasConditionExpr())
9038 AddStmt(S: const_cast<Expr *>(SC->getConditionExpr()));
9039 } else {
9040 writeUInt32(Value: SC->getVarList().size());
9041 for (Expr *E : SC->getVarList())
9042 AddStmt(S: E);
9043 }
9044 return;
9045 }
9046 case OpenACCClauseKind::NumGangs: {
9047 const auto *NGC = cast<OpenACCNumGangsClause>(Val: C);
9048 writeSourceLocation(Loc: NGC->getLParenLoc());
9049 writeUInt32(Value: NGC->getIntExprs().size());
9050 for (Expr *E : NGC->getIntExprs())
9051 AddStmt(S: E);
9052 return;
9053 }
9054 case OpenACCClauseKind::DeviceNum: {
9055 const auto *DNC = cast<OpenACCDeviceNumClause>(Val: C);
9056 writeSourceLocation(Loc: DNC->getLParenLoc());
9057 AddStmt(S: const_cast<Expr*>(DNC->getIntExpr()));
9058 return;
9059 }
9060 case OpenACCClauseKind::DefaultAsync: {
9061 const auto *DAC = cast<OpenACCDefaultAsyncClause>(Val: C);
9062 writeSourceLocation(Loc: DAC->getLParenLoc());
9063 AddStmt(S: const_cast<Expr *>(DAC->getIntExpr()));
9064 return;
9065 }
9066 case OpenACCClauseKind::NumWorkers: {
9067 const auto *NWC = cast<OpenACCNumWorkersClause>(Val: C);
9068 writeSourceLocation(Loc: NWC->getLParenLoc());
9069 AddStmt(S: const_cast<Expr*>(NWC->getIntExpr()));
9070 return;
9071 }
9072 case OpenACCClauseKind::VectorLength: {
9073 const auto *NWC = cast<OpenACCVectorLengthClause>(Val: C);
9074 writeSourceLocation(Loc: NWC->getLParenLoc());
9075 AddStmt(S: const_cast<Expr*>(NWC->getIntExpr()));
9076 return;
9077 }
9078 case OpenACCClauseKind::Private: {
9079 const auto *PC = cast<OpenACCPrivateClause>(Val: C);
9080 writeSourceLocation(Loc: PC->getLParenLoc());
9081 writeOpenACCVarList(C: PC);
9082
9083 for (const OpenACCPrivateRecipe &R : PC->getInitRecipes()) {
9084 static_assert(sizeof(R) == 1 * sizeof(int *));
9085 AddDeclRef(D: R.AllocaDecl);
9086 }
9087 return;
9088 }
9089 case OpenACCClauseKind::Host: {
9090 const auto *HC = cast<OpenACCHostClause>(Val: C);
9091 writeSourceLocation(Loc: HC->getLParenLoc());
9092 writeOpenACCVarList(C: HC);
9093 return;
9094 }
9095 case OpenACCClauseKind::Device: {
9096 const auto *DC = cast<OpenACCDeviceClause>(Val: C);
9097 writeSourceLocation(Loc: DC->getLParenLoc());
9098 writeOpenACCVarList(C: DC);
9099 return;
9100 }
9101 case OpenACCClauseKind::FirstPrivate: {
9102 const auto *FPC = cast<OpenACCFirstPrivateClause>(Val: C);
9103 writeSourceLocation(Loc: FPC->getLParenLoc());
9104 writeOpenACCVarList(C: FPC);
9105
9106 for (const OpenACCFirstPrivateRecipe &R : FPC->getInitRecipes()) {
9107 static_assert(sizeof(R) == 2 * sizeof(int *));
9108 AddDeclRef(D: R.AllocaDecl);
9109 AddDeclRef(D: R.InitFromTemporary);
9110 }
9111 return;
9112 }
9113 case OpenACCClauseKind::Attach: {
9114 const auto *AC = cast<OpenACCAttachClause>(Val: C);
9115 writeSourceLocation(Loc: AC->getLParenLoc());
9116 writeOpenACCVarList(C: AC);
9117 return;
9118 }
9119 case OpenACCClauseKind::Detach: {
9120 const auto *DC = cast<OpenACCDetachClause>(Val: C);
9121 writeSourceLocation(Loc: DC->getLParenLoc());
9122 writeOpenACCVarList(C: DC);
9123 return;
9124 }
9125 case OpenACCClauseKind::Delete: {
9126 const auto *DC = cast<OpenACCDeleteClause>(Val: C);
9127 writeSourceLocation(Loc: DC->getLParenLoc());
9128 writeOpenACCVarList(C: DC);
9129 return;
9130 }
9131 case OpenACCClauseKind::UseDevice: {
9132 const auto *UDC = cast<OpenACCUseDeviceClause>(Val: C);
9133 writeSourceLocation(Loc: UDC->getLParenLoc());
9134 writeOpenACCVarList(C: UDC);
9135 return;
9136 }
9137 case OpenACCClauseKind::DevicePtr: {
9138 const auto *DPC = cast<OpenACCDevicePtrClause>(Val: C);
9139 writeSourceLocation(Loc: DPC->getLParenLoc());
9140 writeOpenACCVarList(C: DPC);
9141 return;
9142 }
9143 case OpenACCClauseKind::NoCreate: {
9144 const auto *NCC = cast<OpenACCNoCreateClause>(Val: C);
9145 writeSourceLocation(Loc: NCC->getLParenLoc());
9146 writeOpenACCVarList(C: NCC);
9147 return;
9148 }
9149 case OpenACCClauseKind::Present: {
9150 const auto *PC = cast<OpenACCPresentClause>(Val: C);
9151 writeSourceLocation(Loc: PC->getLParenLoc());
9152 writeOpenACCVarList(C: PC);
9153 return;
9154 }
9155 case OpenACCClauseKind::Copy:
9156 case OpenACCClauseKind::PCopy:
9157 case OpenACCClauseKind::PresentOrCopy: {
9158 const auto *CC = cast<OpenACCCopyClause>(Val: C);
9159 writeSourceLocation(Loc: CC->getLParenLoc());
9160 writeEnum(value: CC->getModifierList());
9161 writeOpenACCVarList(C: CC);
9162 return;
9163 }
9164 case OpenACCClauseKind::CopyIn:
9165 case OpenACCClauseKind::PCopyIn:
9166 case OpenACCClauseKind::PresentOrCopyIn: {
9167 const auto *CIC = cast<OpenACCCopyInClause>(Val: C);
9168 writeSourceLocation(Loc: CIC->getLParenLoc());
9169 writeEnum(value: CIC->getModifierList());
9170 writeOpenACCVarList(C: CIC);
9171 return;
9172 }
9173 case OpenACCClauseKind::CopyOut:
9174 case OpenACCClauseKind::PCopyOut:
9175 case OpenACCClauseKind::PresentOrCopyOut: {
9176 const auto *COC = cast<OpenACCCopyOutClause>(Val: C);
9177 writeSourceLocation(Loc: COC->getLParenLoc());
9178 writeEnum(value: COC->getModifierList());
9179 writeOpenACCVarList(C: COC);
9180 return;
9181 }
9182 case OpenACCClauseKind::Create:
9183 case OpenACCClauseKind::PCreate:
9184 case OpenACCClauseKind::PresentOrCreate: {
9185 const auto *CC = cast<OpenACCCreateClause>(Val: C);
9186 writeSourceLocation(Loc: CC->getLParenLoc());
9187 writeEnum(value: CC->getModifierList());
9188 writeOpenACCVarList(C: CC);
9189 return;
9190 }
9191 case OpenACCClauseKind::Async: {
9192 const auto *AC = cast<OpenACCAsyncClause>(Val: C);
9193 writeSourceLocation(Loc: AC->getLParenLoc());
9194 writeBool(Value: AC->hasIntExpr());
9195 if (AC->hasIntExpr())
9196 AddStmt(S: const_cast<Expr*>(AC->getIntExpr()));
9197 return;
9198 }
9199 case OpenACCClauseKind::Wait: {
9200 const auto *WC = cast<OpenACCWaitClause>(Val: C);
9201 writeSourceLocation(Loc: WC->getLParenLoc());
9202 writeBool(Value: WC->getDevNumExpr());
9203 if (Expr *DNE = WC->getDevNumExpr())
9204 AddStmt(S: DNE);
9205 writeSourceLocation(Loc: WC->getQueuesLoc());
9206
9207 writeOpenACCIntExprList(Exprs: WC->getQueueIdExprs());
9208 return;
9209 }
9210 case OpenACCClauseKind::DeviceType:
9211 case OpenACCClauseKind::DType: {
9212 const auto *DTC = cast<OpenACCDeviceTypeClause>(Val: C);
9213 writeSourceLocation(Loc: DTC->getLParenLoc());
9214 writeUInt32(Value: DTC->getArchitectures().size());
9215 for (const DeviceTypeArgument &Arg : DTC->getArchitectures()) {
9216 writeBool(Value: Arg.getIdentifierInfo());
9217 if (Arg.getIdentifierInfo())
9218 AddIdentifierRef(II: Arg.getIdentifierInfo());
9219 writeSourceLocation(Loc: Arg.getLoc());
9220 }
9221 return;
9222 }
9223 case OpenACCClauseKind::Reduction: {
9224 const auto *RC = cast<OpenACCReductionClause>(Val: C);
9225 writeSourceLocation(Loc: RC->getLParenLoc());
9226 writeEnum(value: RC->getReductionOp());
9227 writeOpenACCVarList(C: RC);
9228
9229 for (const OpenACCReductionRecipe &R : RC->getRecipes()) {
9230 AddDeclRef(D: R.AllocaDecl);
9231
9232 static_assert(sizeof(OpenACCReductionRecipe::CombinerRecipe) ==
9233 3 * sizeof(int *));
9234 writeUInt32(Value: R.CombinerRecipes.size());
9235
9236 for (auto &CombinerRecipe : R.CombinerRecipes) {
9237 AddDeclRef(D: CombinerRecipe.LHS);
9238 AddDeclRef(D: CombinerRecipe.RHS);
9239 AddStmt(S: CombinerRecipe.Op);
9240 }
9241 }
9242 return;
9243 }
9244 case OpenACCClauseKind::Seq:
9245 case OpenACCClauseKind::Independent:
9246 case OpenACCClauseKind::NoHost:
9247 case OpenACCClauseKind::Auto:
9248 case OpenACCClauseKind::Finalize:
9249 case OpenACCClauseKind::IfPresent:
9250 // Nothing to do here, there is no additional information beyond the
9251 // begin/end loc and clause kind.
9252 return;
9253 case OpenACCClauseKind::Collapse: {
9254 const auto *CC = cast<OpenACCCollapseClause>(Val: C);
9255 writeSourceLocation(Loc: CC->getLParenLoc());
9256 writeBool(Value: CC->hasForce());
9257 AddStmt(S: const_cast<Expr *>(CC->getLoopCount()));
9258 return;
9259 }
9260 case OpenACCClauseKind::Tile: {
9261 const auto *TC = cast<OpenACCTileClause>(Val: C);
9262 writeSourceLocation(Loc: TC->getLParenLoc());
9263 writeUInt32(Value: TC->getSizeExprs().size());
9264 for (Expr *E : TC->getSizeExprs())
9265 AddStmt(S: E);
9266 return;
9267 }
9268 case OpenACCClauseKind::Gang: {
9269 const auto *GC = cast<OpenACCGangClause>(Val: C);
9270 writeSourceLocation(Loc: GC->getLParenLoc());
9271 writeUInt32(Value: GC->getNumExprs());
9272 for (unsigned I = 0; I < GC->getNumExprs(); ++I) {
9273 writeEnum(value: GC->getExpr(I).first);
9274 AddStmt(S: const_cast<Expr *>(GC->getExpr(I).second));
9275 }
9276 return;
9277 }
9278 case OpenACCClauseKind::Worker: {
9279 const auto *WC = cast<OpenACCWorkerClause>(Val: C);
9280 writeSourceLocation(Loc: WC->getLParenLoc());
9281 writeBool(Value: WC->hasIntExpr());
9282 if (WC->hasIntExpr())
9283 AddStmt(S: const_cast<Expr *>(WC->getIntExpr()));
9284 return;
9285 }
9286 case OpenACCClauseKind::Vector: {
9287 const auto *VC = cast<OpenACCVectorClause>(Val: C);
9288 writeSourceLocation(Loc: VC->getLParenLoc());
9289 writeBool(Value: VC->hasIntExpr());
9290 if (VC->hasIntExpr())
9291 AddStmt(S: const_cast<Expr *>(VC->getIntExpr()));
9292 return;
9293 }
9294 case OpenACCClauseKind::Link: {
9295 const auto *LC = cast<OpenACCLinkClause>(Val: C);
9296 writeSourceLocation(Loc: LC->getLParenLoc());
9297 writeOpenACCVarList(C: LC);
9298 return;
9299 }
9300 case OpenACCClauseKind::DeviceResident: {
9301 const auto *DRC = cast<OpenACCDeviceResidentClause>(Val: C);
9302 writeSourceLocation(Loc: DRC->getLParenLoc());
9303 writeOpenACCVarList(C: DRC);
9304 return;
9305 }
9306
9307 case OpenACCClauseKind::Bind: {
9308 const auto *BC = cast<OpenACCBindClause>(Val: C);
9309 writeSourceLocation(Loc: BC->getLParenLoc());
9310 writeBool(Value: BC->isStringArgument());
9311 if (BC->isStringArgument())
9312 AddStmt(S: const_cast<StringLiteral *>(BC->getStringArgument()));
9313 else
9314 AddIdentifierRef(II: BC->getIdentifierArgument());
9315
9316 return;
9317 }
9318 case OpenACCClauseKind::Invalid:
9319 case OpenACCClauseKind::Shortloop:
9320 llvm_unreachable("Clause serialization not yet implemented");
9321 }
9322 llvm_unreachable("Invalid Clause Kind");
9323}
9324
9325void ASTRecordWriter::writeOpenACCClauseList(
9326 ArrayRef<const OpenACCClause *> Clauses) {
9327 for (const OpenACCClause *Clause : Clauses)
9328 writeOpenACCClause(C: Clause);
9329}
9330void ASTRecordWriter::AddOpenACCRoutineDeclAttr(
9331 const OpenACCRoutineDeclAttr *A) {
9332 // We have to write the size so that the reader can do a resize. Unlike the
9333 // Decl version of this, we can't count on trailing storage to get this right.
9334 writeUInt32(Value: A->Clauses.size());
9335 writeOpenACCClauseList(Clauses: A->Clauses);
9336}
9337