{"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
                let a = bx.context.new_rvalue_from_int(elem_ty, ((elem_width as i32) << 3) - 1);
                let unit = vector_type.get_num_units();
                let width = bx.context.new_rvalue_from_vector(None, lhs.get_type(), &vec![a; unit]);