{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"for"}]}
            for out_lane_idx in 0..lane_count / 2 {
            let ret_lane_layout = fx.layout_of(fx.tcx.types.i32);
                let a_lane0 = a.value_lane(fx, out_lane_idx * 2).load_scalar(fx);