[Bug middle-end/64225] [4.8/4.9/5 Regression] -funsafe-math-optimizations generates call to pow where multiply instruction would do

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64225

--- Comment #11 from ktkachov at gcc dot gnu.org ---
(In reply to Bill Schmidt from comment #10)
> Agreed.  I will test the fix Richard suggested.  Assuming no regressions,
> does pre-approval include backports to 4.8 and 4.9?

Thanks for taking this up. FWIW I've bootstrapped this on x86_64 trunk
succesfully. Will try aarch64 as well.