PR middle-end/66253
	* tree-vect-stmts.c (vectorizable_store): Implement non-SLP
	grouped strided stores.
	(vectorizable_load): Don't use the DR from first_stmt in
	the non-SLP grouped strided case.

testsuite/
	* gcc.dg/vect/pr66253.c: New testcase.

From-SVN: r224605