re PR tree-optimization/36493 (vectorizer aliasing bug)

re PR tree-optimization/36493 (vectorizer aliasing bug)

	PR tree-optimization/36493
	* tree-vect-transform.c (vect_create_data_ref_ptr): Remove TYPE from
	the arguments list. Use VECTYPE to create vector pointer.
	(vectorizable_store): Fail if accesses through a pointer to vectype
	do not alias the original memory reference operands.
	Call vect_create_data_ref_ptr without the removed argument.
	(vectorizable_load): Likewise.
	(vect_setup_realignment): Call vect_create_data_ref_ptr without the
	removed argument.

From-SVN: r136843