tree-ssa-alias.c (indirect_refs_may_alias_p): Do not treat arrays with same type as objects that cannot overlap.

2016-12-01  Richard Biener  <rguenther@suse.de>

	* tree-ssa-alias.c (indirect_refs_may_alias_p): Do not
	treat arrays with same type as objects that cannot overlap.

	* gcc.dg/torture/alias-2.c: New testcase.

From-SVN: r243106