re PR tree-optimization/33953 (internal compiler error: vector VEC(tree,base) index domain error, in vectorizable_operation at tree-vect-transform.c:4017)

	PR tree-optimization/33953
	* tree-vect-transform.c (vectorizable_operation): In case of SLP,
	allocate vec_oprnds1 according to the number of created vector
	statements. In case of shift with scalar argument, store scalar operand
	for every vector statement to be created for the SLP node. Fix a
	comment.

From-SVN: r130096