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xilinx_dffopt - Xilinx: optimize FF control signal usage
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.. raw:: latex

    \begin{comment}

.. cmd:def:: xilinx_dffopt
    :title: Xilinx: optimize FF control signal usage



    .. code:: yoscrypt

        xilinx_dffopt [options] [selection]

    ::

        Converts hardware clock enable and set/reset signals on FFs to emulation
        using LUTs, if doing so would improve area.  Operates on post-techmap Xilinx
        cells (LUT*, FD*).


    .. code:: yoscrypt

        -lut4

    ::

            Assume a LUT4-based device (instead of a LUT6-based device).

.. raw:: latex

    \end{comment}

.. only:: latex

    ::

        
            xilinx_dffopt [options] [selection]
        
        Converts hardware clock enable and set/reset signals on FFs to emulation
        using LUTs, if doing so would improve area.  Operates on post-techmap Xilinx
        cells (LUT*, FD*).
        
            -lut4
                Assume a LUT4-based device (instead of a LUT6-based device).