2015-07-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66772
	* tree-ssa-ccp.c (ccp_visit_phi_node): Make sure that copy
	values are available in the PHI node BB when there are
	still unexecutable edges.

	* gcc.dg/torture/pr66772-1.c: New testcase.
	* gcc.dg/torture/pr66772-2.c: Likewise.

From-SVN: r225459