"Floorplacement" has attracted attention, as a placement formulation for designs with thousands or millions of soft macro blocks. In this paper, we investigate the "standard block" approach, where soft blocks are shaped to have uniform height, rather than a wide range of different sizes. This allows many macro blocks to be treated as standard cells, simplifying the problem to one of ordinary mixed size placement. We obtain high quality results for a suite of recent benchmarks, and also present novel legalization algorithms that are more robust than the widely-used mixed-size tetris approach.
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