https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77730
--- Comment #6 from PeteVine <tulipawn at gmail dot com> --- There's definitely a problem with mcpu/mtune in GCC6 to the point I wasn't able to get the expected performance back, please look here: http://openbenchmarking.org/result/1609269-LO-GCRYPTAAR21 BTW, that benchmark required lots of hacking/patching to run on aarch64. Won't work OOTB.
