Organizing Pattern Libraries for ASIP Design

In this paper we propose a new method to arrange a library of application-graph patterns. Such libraries are employed in the design process for Application-Specific Instruction-set Processors (ASIPs) to find opportunities to specialize a processor instruction-set for an application domain. In current approaches, these libraries are unordered data collections. Therefore, to search a library for a specific pattern entails comparing the pattern with each entry in the library, which is O(n * p) with n the total number of operation nodes of all patterns in the library and p the size of the pattern sought.
Our new method employs identity operations to organize a library in such a way that directed search strategy with only O(d) and d smaller than or equal to p is possible. Furthermore, the organization reveals synergies between patterns for the ASIP design process and for code generation.

A summary of this paper has appeared in Proceedings of Design, Automation and Test in Europe Conference and Exhibition, ed. by G. Gielen and J. Figueras, pp. 726-727 (2004).

By: Gero Dittmann

Published in: in 2003


This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.


Questions about this service can be mailed to .