Management of placement constraint regions in an electronic design automation (EDA) system

摘要

A method of establishing regions for placing cells of an integrated circuit (IC) includes, in part, assigning a precedence value to each of a multitude of constraint regions of the IC, and forming a multitude regions each associated with one of the constraint regions. The region associated with each constraint region is formed in accordance with the precedence value of its associated constraint region and the precedence values associated with any other constraint regions overlapping the first constraint region. Each region in a subset of the constraint regions is further defined in accordance with the region's transparency/opacity attribute.