http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55158
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-12-03 21:06:23 UTC --- > Someone needs to do something here because the C/C++/Fortran testsuite results > are abysmal at -O3. And the tentative fix doesn't really help, it turns the ICEs of the testsuite at -O3 into timeouts.