2017-01-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79245
	* tree-loop-distribution.c (distribute_loop): Apply cost
	modeling also to detected patterns.

	* gcc.dg/tree-ssa/ldist-23.c: XFAIL.
	* gcc.dg/tree-ssa/ldist-25.c: New testcase.

From-SVN: r244976