On XAIG Rewriting

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21240%2F17%3A00312128" target="_blank" >RIV/68407700:21240/17:00312128 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On XAIG Rewriting

Popis výsledku v původním jazyce

This paper presents a rewriting algorithm based on XOR-AND-Inverter Graphs (XAIGs). Such logic representation allows for synthesis algorithms work with XOR gates in a native way. Basic support for XAIGs has already been implemented in the ABC9 package GIA manager, where AND, XOR, and MUX nodes are allowed. However, the rewriting algorithm was missing in ABC9, hence we have re-implemented the original, AIG-based algorithm, and included it in the ABC9 package. For our purposes, we have restricted the nodes set to AND and XOR gates only. The presented XAIG-based rewriting algorithm is compared with the standard AIG-based rewriting algorithm. Since more node types bring some new decisions the rewriting algorithm has to make, we have implemented different rewriting mechanisms and compared them. The results indicate that XAIG based rewriting can lead to different circuits than the original rewriting and although AIG based rewriting produces slightly smaller circuits in most cases, some circuits are better handled with XAIG based rewriting, which points to future research and improvements. The XAIG based rewriting was also able to find significantly more XORs than ABC9 structural hashing and rewriting.

Název v anglickém jazyce

On XAIG Rewriting

Popis výsledku anglicky

This paper presents a rewriting algorithm based on XOR-AND-Inverter Graphs (XAIGs). Such logic representation allows for synthesis algorithms work with XOR gates in a native way. Basic support for XAIGs has already been implemented in the ABC9 package GIA manager, where AND, XOR, and MUX nodes are allowed. However, the rewriting algorithm was missing in ABC9, hence we have re-implemented the original, AIG-based algorithm, and included it in the ABC9 package. For our purposes, we have restricted the nodes set to AND and XOR gates only. The presented XAIG-based rewriting algorithm is compared with the standard AIG-based rewriting algorithm. Since more node types bring some new decisions the rewriting algorithm has to make, we have implemented different rewriting mechanisms and compared them. The results indicate that XAIG based rewriting can lead to different circuits than the original rewriting and although AIG based rewriting produces slightly smaller circuits in most cases, some circuits are better handled with XAIG based rewriting, which points to future research and improvements. The XAIG based rewriting was also able to find significantly more XORs than ABC9 structural hashing and rewriting.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20206 - Computer hardware and architecture

Projekt

<a href="/cs/project/GA16-05179S" target="_blank" >GA16-05179S: Výzkum vztahů a společných vlastností spolehlivých a bezpečných architektur založených na programovatelných obvodech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů