https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120553
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Richard Biener from comment #1) > might be also interesting on x86-64 when using bts can use a smaller > immediate than the now used orq and thus improve instruction size (but it > clobbers flags). All arithmetic instructions (including orq) clobber flags on x86.
