http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52646
--- Comment #4 from Tyler Hardin <th020394 at gmail dot com> 2012-03-21 01:07:20 UTC --- If I care enough to implement them for x86, do you believe it would be included in GCC? If not, I won't waste my time with it (while it's worth my time to implement it, it's not worth my time to maintain a fork that has my patch). If you do, then I would really appreciate a hint about where to start. I realize it may be obscure, so I understand if no one has a clue.