{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"res"}]}
                res = fx.bcx.ins().ishl_imm(res, 1);
                let a_lane_sign = clif_intcast(fx, a_lane_sign, res_type, false);
                res = fx.bcx.ins().bor(res, a_lane_sign);