[Bug c++/50495] Optimize exact matches in overload resolution

[mathias at gaunard dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50495

--- Comment #5 from Mathias Gaunard <mathias at gaunard dot com> 2011-09-23 
16:38:11 UTC ---
clang was already 50% faster in my tests, so I guess that will put gcc 4.7 on
par with it.