| 摘要 |
One embodiment of the present invention provides a system that facilitates placing flip-flops in an integrated circuit based on timing requirements. The system operates by first receiving a netlist for flip-flop connectivity. Next, the system determines a metal layer class definition for each signal in the netlist based upon timing requirements of a corresponding flip-flop. The system then classifies a flip-flop instance using the metal layer class definition by defining a flip-flop type for each flip-flop instance and associating the flip-flop with a group of other flip-flops that have a same metal layer class definition. Finally, determining a position for the group by replacing an existing repeater in the integrated circuit with the group of flip-flops.
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