[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 #12 from William J. Schmidt <wschmidt at gcc dot gnu.org> 
2011-06-07 15:12:07 UTC ---
Author: wschmidt
Date: Tue Jun  7 15:12:04 2011
New Revision: 174752

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174752
Log:
2011-06-07  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

    PR tree-optimization/46728
    * tree-ssa-math-opts.c (gimple_expand_builtin_pow): Change FIXME
    to use gimple_val_nonnegative_real_p.
    * gimple-fold.c (gimple_val_nonnegative_real_p): New function.
    * gimple.h (gimple_val_nonnegative_real_p): New declaration.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/gimple.h
    trunk/gcc/tree-ssa-math-opts.c