2016-03-09  Richard Biener  <rguenther@suse.de>
	Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/70138
	* tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer):
	Also skip vect_double_reduction_def.

	* gcc.dg/vect/pr70138-1.c: New testcase.
	* gcc.dg/vect/pr70138-2.c: Likewise.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r234086