re PR rtl-optimization/44214 (Compiler does not optimize vector divide with -frecipro...

re PR rtl-optimization/44214 (Compiler does not optimize vector divide with -freciprocal-math (or -ffast-math))

gcc:

2012-04-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR rtl-optimization/44214
	* fold-const.c (exact_inverse): New function.
	(fold_binary_loc): Fold vector and complex division by constant into
	multiply by recripocal with flag_reciprocal_math; fold vector division
	by constant into multiply by reciprocal with exact inverse.

gcc/testsuite:

2012-04-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR rtl-optimization/44214
	* gcc.dg/pr44214-1.c: New test.
	* gcc.dg/pr44214-2.c: Likewise.
	* gcc.dg/pr44214-3.c: Likewise.

From-SVN: r186625