re PR tree-optimization/66726 (missed optimization, factor conversion out of COND_EXPR)

gcc/testsuite/ChangeLog:

2015-07-12  Kugan Vivekanandarajah  <kuganv@linaro.org>
	    Jeff Law  <law@redhat.com>

	PR middle-end/66726
	* g++.dg/tree-ssa/pr66726.c: New test.
	* gcc.dg/tree-ssa/pr66726-2.c: New test.
	* gcc.dg/tree-ssa/pr66726.c: New test.


gcc/ChangeLog:

2015-07-12  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/66726
	* tree-ssa-phiopt.c(factor_out_conditional_conversion): New function.
	tree_ssa_phiopt_worker): Call it.



Co-Authored-By: Jeff Law <law@redhat.com>

From-SVN: r225722