{"ast_node_type":"variable","tokens":[{"end":52,"kind":"keyword","start":0,"text":"let"}]}
                let lane_ty = match lane_ty.kind() {
            simd_for_each_lane(fx, a, ret, &|fx, lane_ty, _ret_lane_ty, lane| {
                    ty::Float(FloatTy::F32) => types::F32,