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[serialization] Add BCGenericRecordLayout, for shared layouts.

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Micro-optimization in module file size and loading complexity.
No functionality change.

Swift SVN r5240
This commit is contained in:
Jordan Rose
2013-05-20 22:50:42 +00:00
parent 6a0609d169
commit 8707fa7000
3 changed files with 62 additions and 39 deletions
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24
lib/Serialization/Serialization.cpp
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@@ -146,7 +146,8 @@ namespace {
void writeAllDeclsAndTypes();
/// Writes the offsets for decls or types.
void writeOffsets(DeclOrType whichOffsets);
void writeOffsets(const index_block::OffsetsLayout &Offsets,
DeclOrType whichOffsets);
/// Top-level entry point for serializing a translation unit module.
void writeTranslationUnit(const TranslationUnit *TU);
@@ -323,14 +324,14 @@ void Serializer::writeAllDeclsAndTypes() {
}
}
void Serializer::writeOffsets(DeclOrType which) {
if (which == DeclOrType::IsDecl) {
index_block::DeclOffsetsLayout Offsets(Out);
Offsets.emit(ScratchRecord, FirstLocalDeclID, DeclOffsets);
} else {
index_block::TypeOffsetsLayout Offsets(Out);
Offsets.emit(ScratchRecord, FirstLocalTypeID, TypeOffsets);
}
void Serializer::writeOffsets(const index_block::OffsetsLayout &Offsets,
DeclOrType which) {
if (which == DeclOrType::IsDecl)
Offsets.emit(ScratchRecord, index_block::DECL_OFFSETS, FirstLocalDeclID,
DeclOffsets);
else
Offsets.emit(ScratchRecord, index_block::TYPE_OFFSETS, FirstLocalTypeID,
TypeOffsets);
}
void Serializer::writeTranslationUnit(const TranslationUnit *TU) {
@@ -349,9 +350,10 @@ void Serializer::writeTranslationUnit(const TranslationUnit *TU) {
{
BCBlockRAII restoreBlock(Out, INDEX_BLOCK_ID, 3);
index_block::OffsetsLayout Offsets(Out);
writeOffsets(DeclOrType::IsDecl);
writeOffsets(DeclOrType::IsType);
writeOffsets(Offsets, DeclOrType::IsDecl);
writeOffsets(Offsets, DeclOrType::IsType);
}
}