http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49148
--- Comment #5 from John Peyton <jchthys at yahoo dot com> 2011-05-24 21:26:49 UTC --- > Maybe you are getting subnormals which causes a huge performance decrease. It looks like that might indeed be the case. It didn't seem to happen with ICC though. Is it possible that other compilers have different ways of handling subnormals?
