http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57071
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-26 09:16:41 UTC --- Note that for the (-1.0)**k case __builtin_powif (-1.0e+0, k) should be perfectly fine for the middle-end. _gfortran_pow_i4_i4 (-1, k) is of course unfortunate and should be optimized by the frontend.
