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Exploiting frequent opcode locality for power efficient instruction cache

Published: 04 May 2008 Publication History

Abstract

Due to the frequent access, the instruction cache is usually a major power consumer. Based on the frequent opcode locality, where a small number of opcodes often account for a large portion of instruction executions, we propose a power-efficient instruction cache design, called frequent opcodes encoding (FOE) instruction cache, which is a tableless and software independent design. In our design, a few frequent opcodes are recoded to minimize the bitline switching activities, and thus reduce the power consumption of the instruction cache.

References

[1]
Kim, S. and Kim, J. 1999. Opcode encoding for low power instruction fetch. IEE Electronics Letters. 35, 13, 1064--1065.
[2]
Pouladi, A. and Nooshabadi, S. 2005. Opcode encoding for low power embedded systems. in Proceedings of Symposium on Circuits and Systems. 23--26.
[3]
Chandar, S. G., Mehendale, M. and Govindarajan, G. 2001. Area and power reduction of embedded DSP systems using instruction compression and re--configurable encoding. in Proceedings of International Conference on Computer Aided Design (ICCAD), 631--634.
[4]
Kadayif, I. and Kandemir, M. T. 2002. Instruction compression and encoding for low--power systems. in Proceedings of International ASIC/SOC Conference, 301--305.
[5]
Shivakumar, P. and Jouppi, N. P. 2001. CACTI 3.0: An integrated cache timing, power and area model. COMPAQ WRL Research Report.

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    cover image ACM Conferences
    GLSVLSI '08: Proceedings of the 18th ACM Great Lakes symposium on VLSI
    May 2008
    480 pages
    ISBN:9781595939999
    DOI:10.1145/1366110
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 04 May 2008

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    Author Tags

    1. frequent opcode locality
    2. instruction cache
    3. power-efficient

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    May 4 - 6, 2008
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