re PR tree-optimization/78076 (Conditional jump or move depends on uninitialised value @ tree-vect-loop.c:2307)

2016-10-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78076
	* tree-ssa-loop-split.c (tree_ssa_split_loops): Reset aux
	also on the loop tree root.

From-SVN: r241467