tree-vect-transform.c (vect_get_slp_defs): Don't build a vector for oprnd1 if not...

tree-vect-transform.c (vect_get_slp_defs): Don't build a vector for oprnd1 if not required.

	* tree-vect-transform.c (vect_get_slp_defs): Don't build a vector
	for oprnd1 if not required.
	(vectorizable_operation): Use scalar operand in SLP in case of
	shift with scalar argument.

From-SVN: r128412