re PR tree-optimization/32377 (can't determine dependence (source/destination overlap without more than size))

2007-10-31  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/32377
	* tree-data-ref.c (compute_overlap_steps_for_affine_univar): Make it
	work also for unknown number of iterations.
	(analyze_subscript_affine_affine): Clean up.  Don't fail when the 
	number of iterations is not known.

	* gfortran.dg/vect/pr32377.f90: New.

From-SVN: r129797