{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"for"}]}
            for out_lane_idx in 0..lane_count / 8 {
            let ret_lane_layout = fx.layout_of(fx.tcx.types.u64);
                let mut lane_diff_acc = fx.bcx.ins().iconst(types::I64, 0);