2016-08-11  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	PR tree-optimization/71083
	* tree-predcom.c (ref_at_iteration): Correctly align the
	reference type.

testsuite:
2016-08-11  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	PR tree-optimization/71083
	* gcc.c-torture/execute/pr71083.c: New test.
	* gnat.dg/loop_optimization23.adb: New test.
	* gnat.dg/loop_optimization23_pkg.ads: New test.
	* gnat.dg/loop_optimization23_pkg.adb: New test.