http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43601
--- Comment #47 from Andrew Pinski <pinskia at gcc dot gnu.org> 2010-10-14 17:13:01 UTC --- One should note that GCC's implementation of PCH is way different from MSVC's. So comparing with PCH is not the correct thing to do really. PCH in GCC is really preprocessed/sematicized headers rather than header that is an object file like in MSVC's case.
