Are XORs in logic synthesis really necessary?

Ivo Halecek, P. Fiser, Jan Schmidt
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引用次数: 21

Abstract

This paper follows recent research on insufficient synthesis performance for XOR-intensive circuits, and introduces a novel logic representation with a native support of XOR gates, the XOR-AND-Inverter Graphs (XAIGs). A rewriting algorithm over XAIG has been implemented in the logic synthesis and optimization package ABC, as the first step towards a complete synthesis process. The results show that XAIG based rewriting can help to discover XORs and improves the area of a mapped network in some cases.
xor在逻辑合成中真的有必要吗?
本文根据最近对异或密集型电路综合性能不足的研究,介绍了一种具有本机支持异或门的新颖逻辑表示,即异或与逆变图(XAIGs)。在逻辑综合和优化包ABC中实现了XAIG的重写算法,这是迈向完整综合过程的第一步。结果表明,基于XAIG的重写可以帮助发现xor,并在某些情况下改善映射网络的面积。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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