2015-12-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68639
	* tree-vect-data-refs.c (dr_group_sort_cmp): Split groups
	belonging to different loops.
	(vect_analyze_data_ref_accesses): Likewise.

	* gfortran.fortran-torture/compile/pr68639.f90: New testcase.

From-SVN: r231220