Importance

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Abstract

A computer-based system and method is provided for building subsets of a hierarchical circuit design. A VLSI circuit design component is stored in computer memory. The design component identifies a leaf design entity in the hierarchical circuit design. A set of placements is determined representing positions in the hierarchical circuit design where the VLSI circuit design component appears. The placements form a subset of instances of the leaf design entity. A set of links is created. The links are associated in memory with both the VLSI circuit design component and the placements, and connect various ones of the placements to one another to further denote placement of the VLSI circuit design component within the hierarchical circuit design. A subset list is appended to the VLSI circuit design component in computer memory. The subset list denotes the previously-determined subset and includes placements where the VLSI circuit design component is identified in the hierarchical circuit design. The identified placements may indicate exclusion of a particular instance of a design component from the hierarchical circuit design, or inclusion of a particular instance.

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First Claim