diff options
Diffstat (limited to 'clang/lib/Serialization/ASTWriter.cpp')
| -rw-r--r-- | clang/lib/Serialization/ASTWriter.cpp | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp index cc6e2cff402..5b8d8b7d0e4 100644 --- a/clang/lib/Serialization/ASTWriter.cpp +++ b/clang/lib/Serialization/ASTWriter.cpp @@ -1160,12 +1160,17 @@ void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context, Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record, getClangFullRepositoryVersion()); - // Signature - Record.clear(); - Record.push_back(getSignature()); - Stream.EmitRecord(SIGNATURE, Record); - if (WritingModule) { + // For implicit modules we output a signature that we can use to ensure + // duplicate module builds don't collide in the cache as their output order + // is non-deterministic. + // FIXME: Remove this when output is deterministic. + if (Context.getLangOpts().ImplicitModules) { + Record.clear(); + Record.push_back(getSignature()); + Stream.EmitRecord(SIGNATURE, Record); + } + // Module name BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME)); @@ -3507,14 +3512,12 @@ void ASTWriter::WriteIdentifierTable(Preprocessor &PP, // Create the on-disk hash table representation. We only store offsets // for identifiers that appear here for the first time. IdentifierOffsets.resize(NextIdentID - FirstIdentID); - for (llvm::DenseMap<const IdentifierInfo *, IdentID>::iterator - ID = IdentifierIDs.begin(), IDEnd = IdentifierIDs.end(); - ID != IDEnd; ++ID) { - assert(ID->first && "NULL identifier in identifier table"); - if (!Chain || !ID->first->isFromAST() || - ID->first->hasChangedSinceDeserialization()) - Generator.insert(const_cast<IdentifierInfo *>(ID->first), ID->second, - Trait); + for (auto IdentIDPair : IdentifierIDs) { + IdentifierInfo *II = const_cast<IdentifierInfo *>(IdentIDPair.first); + IdentID ID = IdentIDPair.second; + assert(II && "NULL identifier in identifier table"); + if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization()) + Generator.insert(II, ID, Trait); } // Create the on-disk hash table in a buffer. |
