https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103344
--- Comment #5 from cqwrteur <unlvsur at live dot com> --- (In reply to Andrew Pinski from comment #4) > Again you misunderstood. There is a cost model for doing the multiple shift > from the division and if says the function call will be faster, it uses > that. There is also a trade off with respect to code size too. This is one > area where gcc could be improved in printing out what choices it made and > why but that is a different issue. > Again how do you know if the function will be slower than the multiple and > shift here? dragonbox!
