https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78994
--- Comment #9 from PeteVine <tulipawn at gmail dot com> --- Well, yes, that fixes the -Ofast issue for me: -mcpu=cortex-a53 -frename-registers iir: 65952 ns per loop iir_2: 63098 ns per loop -mcpu=cortex-a57 (-frename-registers) iir: 62839 ns per loop iir_2: 62677 ns per loop
