re PR tree-optimization/84204 ([graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206)

2018-02-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84204
	* tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
	this place.

	* gcc.dg/graphite/pr84204.c: New testcase.

	PR tree-optimization/84205
	* graphite-isl-ast-to-gimple.c (binary_op_to_tree): Also
	special-case isl_ast_op_zdiv_r.

	* gcc.dg/graphite/pr84205.c: New testcase.

	PR tree-optimization/84223
	* graphite-scop-detection.c (gather_bbs::before_dom_children):
	Only add conditions from within the region.
	(gather_bbs::after_dom_children): Adjust.

	* gfortran.dg/graphite/pr84223.f90: New testcase.

From-SVN: r257441