{"ast_node_type":"variable","tokens":[{"end":91,"kind":"keyword","start":0,"text":"let"}]}
                    let gt = fx.bcx.ins().icmp(IntCC::UnsignedGreaterThan, x_lane, y_lane);
                &|fx, _lane_ty, _res_lane_ty, x_lane, y_lane| {
                    fx.bcx.ins().select(gt, x_lane, y_lane)