The attached patch adds five more abbreviations to PCH serialization, with the intention of decreasing PCH sizes.
With this patch, PCH binary sizes decrease ~1.2% for Objective-C headers like Cocoa and WebKit and ~2.6% for C++ headers like string and iostream. This patch also includes a minor fix for the ASTWriter so that more AST node types can be resolved when using tools like llvm-bcanalyzer. Jonathan
clang_pch_abbrev.patch
Description: Binary data
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