2015-01-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/64853
	* tree-vrp.c (vrp_valueize_1): Do not return anything if the
	stmt will get simulated again.
	* tree-ssa-ccp.c (valueize_op_1): Likewise.

	* gcc.dg/torture/pr64853.c: New testcase.

From-SVN: r220247