Altera Corporation

Junaid Asim Khan

Scott James Brissenden

Ryan Fung

Ketan Padalia

Gabriel Quan

A method for implementing physical optimizations includes performing physical optimizations on a first reference version of a design, maintaining a computer-readable list of the physical optimizations, and during a subsequent compile for a second version of the design: identifying matching cells, nets, or both between the first reference version of the design and the second version of the design; and restoring at least a subset of the physical optimizations in the second version of the design by reading the computer-readable list of the physical optimizations and applying the subset to a computer-readable description of the second version of the design.

Method and apparatus for performing fast incremental physical design optimization

A method for designing a system on a target device includes generating a first netlist for a first version of the system after performing synthesis in a first compilation. Optimizations are performed on the first version of the system during placement and routing in the first compilation resulting in a second netlist. A third netlist is generated for a second version of the system after performing synthesis in a second compilation. A hybrid netlist is generated from the first, second, and third netlists. Incremental placement and routing are performed on portions of the hybrid netlist that are new to the first compilation.

Circuitry for an efficient configuration data management is presented. The circuitry includes an encoding circuit that compares configuration data of a circuit design with base configuration data of a base circuit design. The encoding circuit compresses a difference between the configuration data and the base configuration data to produce compressed configuration data. The compressed configuration data can be stored in a storage circuit. For a purpose of implementing the circuit design in an integrated circuit, a decoding circuit can retrieve the compressed configuration data from the storage circuit, decompress the compressed configuration data, and compare a result of the decompression operation with the base configuration data to restore the configuration data. The restored configuration data can serve to program configuration memory bits on the integrated circuit, thereby implementing the circuit design.

Efficient integrated circuits configuration data management

Circuitry for efficient configuration data management is presented. The circuitry includes an encoding circuit that compares configuration data of a circuit design with base configuration data of a base circuit design. The encoding circuit compresses the difference between the configuration data and the base configuration data to produce compressed configuration data. The compressed configuration data can be stored in a storage circuit. For a purpose of implementing the circuit design in an integrated circuit, a decoding circuit can retrieve the compressed configuration data from the storage circuit, decompress the compressed configuration data, and compare the result of a decompression operation with the base configuration data to restore the configuration data. The restored configuration data can serve to program configuration memory bits on the integrated circuit, thereby implementing the circuit design.

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Mississauga, Canada

Junaid Asim Khan