2011-05-30  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR tree-optimization/46728
	* tree-ssa-math-opts.c (build_and_insert_call): Reorder parms.
	(build_and_insert_binop): New.
	(gimple_expand_builtin_pow): Reorder args for
	build_and_insert_call; use build_and_insert_binop; add more
	optimizations for fractional exponents.

From-SVN: r174446