muxcover - cover trees of MUX cells with wider MUXes

    muxcover [options] [selection]

Cover trees of $_MUX_ cells with $_MUX{4,8,16}_ cells

    -mux4, -mux8, -mux16
        Use the specified types of MUXes. If none of those options are used,
        the effect is the same as if all of them where used.

        Do not insert decoder logic. This reduces the number of possible
        substitutions, but guarantees that the resulting circuit is not
        less efficient than the original circuit.