2013-12-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/59374
	* tree-vect-data-refs.c (vect_slp_analyze_data_ref_dependence):
	Commonize known and unknown dependence case fixing the allowed
	read-write dependence case and dropping code that should not
	matter.

	* gcc.dg/torture/pr59374-1.c: New testcase.
	* gcc.dg/torture/pr59374-2.c: Likewise.

From-SVN: r205694