2016-01-18  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69297
	* tree-vect-slp.c (vect_bb_slp_scalar_cost): Count each scalar
	stmt at most once.
	(vect_bb_vectorization_profitable_p): Clear visited flag again.

	* gcc.dg/vect/costmodel/x86_64/costmodel-pr69297.c: New testcase.

From-SVN: r232519