re PR middle-end/56443 (internal compiler error: verify_gimple failed at -O[1-2] -ftree-vectorize)

	PR tree-optimization/56443
	* tree-vect-stmts.c (get_vectype_for_scalar_type_and_size): For
	overaligned types, pass TYPE_UNSIGNED (scalar_type) as second argument
	to type_for_mode langhook.

	* gcc.dg/torture/pr56443.c: New test.

From-SVN: r196277