2018-01-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83963
	* graphite-scop-detection.c (scop_detection::harmful_loop_in_region):
	Properly terminate dominator walk when crossing the exit edge not
	when visiting its source block.

	* gfortran.dg/graphite/pr83963.f: New testcase.
	* gcc.dg/graphite/pr83963-2.c: Likewise.

From-SVN: r256973