2017-09-26  Richard Biener  <rguenther@suse.de>

	* graphite-scop-detection.c (scop_detection::build_scop_depth): Rewrite,
	fold in ...
	(scop_detection::build_scop_breadth): ... this.  Removed.
	(scop_detection::loop_is_valid_in_scop): Fold into single caller.
	(scop_detection::harmful_stmt_in_bb): Likewise.
	(scop_detection::graphite_can_represent_stmt): Likewise.
	(scop_detection::loop_body_is_valid_scop): Likewise.  Remove recursion.
	(scop_detection::can_represent_loop): Remove recursion, fold in ...
	(scop_detection::can_represent_loop_1): ... this.  Removed.
	(scop_detection::harmful_loop_in_region): Simplify after inlining
	the above and remove more quadraticness.
	(build_scops): Adjust.
	* tree-data-ref.c (loop_nest_has_data_refs): Remove pointless
	quadraticness.

From-SVN: r253203