re PR tree-optimization/80906 (ICE in copy_loop_close_phi_args, at graphite-isl-ast-to-gimple.c:2094)

2017-05-31  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80906
	* graphite-isl-ast-to-gimple.c (copy_loop_close_phi_nodes): Get
	and pass through iv_map.
	(copy_bb_and_scalar_dependences): Adjust.
	(translate_pending_phi_nodes): Likewise.
	(copy_loop_close_phi_args): Handle code-generating IVs instead
	of ICEing.

	* gcc.dg/graphite/pr80906.c: New testcase.

From-SVN: r248722