Douglas Gregor c3366a555b Lazy deserialization of macro definitions for precompiled headers. ... This optimization improves performance on the Carbon-prefixed "Hello, World!" example by 57%. For reference, we're now about 2.25x faster than GCC PCH. We're also pulling in far less of the PCH file: *** PCH Statistics: 411/20693 types read (1.986179%) 2553/59230 declarations read (4.310316%) 1093/44646 identifiers read (2.448148%) 1/32954 statements read (0.003035%) 21/6187 macros read (0.339421%) llvm-svn: 69755		2009-04-21 23:56:24 +00:00
clang	Lazy deserialization of macro definitions for precompiled headers.	2009-04-21 23:56:24 +00:00
llvm	use predicate instead of hand-rolled loop	2009-04-21 23:37:18 +00:00