re PR tree-optimization/64365 (Predictive commoning after loop vectorization produces incorrect code.)

2015-01-15  Richard Biener  <rguenther@suse.de>

	PR middle-end/64365
	* tree-data-ref.c (dr_analyze_indices): Make sure that accesses
	for MEM_REF access functions with the same base can never partially
	overlap.

	* gcc.dg/torture/pr64365.c: New testcase.

From-SVN: r219634