https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70773
--- Comment #17 from wilco at gcc dot gnu.org --- (In reply to PeteVine from comment #16) > Also, I'd like to repeat the fact using -mcpu=cortex-a7 fixes the issue (no > library calls present). Cortex-A7 has hardware division so it doesn't emit library calls. > Incidentally, having run that A7 profiled binary on a Cortex-A53, I'm seeing > a 10% hit compared to a vanilla A7 binary. Hopefully that's just an artifact > of profiling a different CPU architecture. Well that sounds like the same issue. Note -fprofile-generate simple inserts counters in the generated code. In fact the generated code is practically identical between Cortex-A5 and Cortex-A7.
