http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952
--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Thiago Macieira from comment #19) > The prefix can be emitted for any CPU, you don't need a flag for that. > However, you cannot emit the XTEST instruction unless the CPU has HLE or RTM. Please read Comment 17.
