[Bug tree-optimization/46728] GCC does not generate fmadd for pow (x, 0.75)+y on powerpc

[wschmidt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46728

--- Comment #7 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-05-25 
13:42:14 UTC ---
Patch 2 transforms pow(x,n) to multiplies for integer n, similar to patch 1 for
powi(x,n).