2017-09-25  Richard Biener  <rguenther@suse.de>

	* cfgloop.h (sort_sibling_loops): Declare.
	* cfgloop.c (sort_sibling_loops_cmp): New helper.
	(sort_sibling_loops): New function sorting the sibling loop list
	in RPO order.
	* graphite.c (graphite_transform_loops): Sort sibling loops.

From-SVN: r253149