http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182
--- Comment #13 from oleg at smolsky dot net 2011-09-15 16:53:26 UTC --- David, it looks like we are seeing different things with v4.7... See my comment 11 - I am still observing the slowdown. Do you have access to v4.1 and v4.6? Could you try reproducing my test please?