I don't know what exactly is required, but the basic business is gcc -fprofile-generate ... ./a.out ... gcc -fprofile-use ... I don't know the current s

I don't know what exactly is required, but the basic business is gcc -fprofile-generate ... ./a.out ... gcc -fprofile-use ... I don't know the current state of https://gcc.gnu.org/wiki/AutoFDO https://gcc.gnu.org/wiki/AutoFDO