https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97417
--- Comment #58 from Kito Cheng <kito at gcc dot gnu.org> --- Hi jiawei: I would suggest you just using inst count rather than cycle or time for measuring benchmark if you using qemu, since qemu is functional simulator not cycle accurate neither nearly-cycle accurate simulator, so the performance number is coming from your native host (x86_64) cpu, and it also might sensitive on your host loading. or maybe you could try gem5 for that? Thanks your helping benchmark that :)