CV: Clock Tree Viewer
CV is a vapour-ware. There is hardly any development now.
Look at the following clock tree diagram. The clock tree goes through a MUX, and is gated by a AND gate. The clock tree drives 14K flip-flops and a output pin. The clock tree also drives another flip-flop, which generate another clock that drives 5K flip-flops. The diagram also shows two flip-flops that are not driven by any clock.
Let me know if CV will be useful to you. You feedback is important to me for priorizing the resource spend on CV. You can contact me regarding CV by firstname.lastname@example.org. Thanks.