2012-09-19  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/54132
	* tree-loop-distribution.c (classify_partition): Properly
	check dependences for memmove.
	* tree-data-ref.h (compute_affine_dependence): Declare.
	* tree-data-ref.c (compute_affine_dependence): Export.

	* gcc.dg/tree-ssa/ldist-21.c: New testcase.
	* gcc.dg/torture/pr54132.c: Likewise.

From-SVN: r191463