https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67153
--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Uroš Bizjak from comment #7) > Can you experiment a bit with -mno-bmi and/or -mno-bmi2 compile options? Also, perf is able to record execution profiles, it will help you find hot spots.