http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51258
--- Comment #12 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-11-25 16:35:43 UTC --- > --- Comment #11 from Uros Bizjak <ubizjak at gmail dot com> 2011-11-25 > 16:26:41 UTC --- > I have additional patch that checks cpuid bit_CMPXCHG16B (and bit_CMPXCHG8B > fwiw) for runtime support. Thanks for the heads up. I've already committed my patch and meant to work on this part over the weekend. Rainer