http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56812
--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> 2013-04-02 11:22:45 UTC --- Created attachment 29775 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29775 testcase Need to compile with -O3 -funroll-loops options.