re PR tree-optimization/69728 (internal compiler error: in outer_projection_mupa...

re PR tree-optimization/69728 (internal compiler error: in outer_projection_mupa, at graphite-sese-to-poly.c:1175)

2017-09-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69728
	* graphite-sese-to-poly.c (schedule_error): New global.
	(add_loop_schedule): Handle empty domain by failing the
	schedule.
	(build_original_schedule): Handle schedule_error.

	* gfortran.dg/graphite/pr69728.f90: New testcase.
	* gcc.dg/graphite/pr69728.c: Likewise.

From-SVN: r252968