Avoiding data conversions in embedded media processors

  • Authors:
  • Ben Juurlink;Asadollah Shahbahrami;Stamatis Vassiliadis

  • Affiliations:
  • Delft University of Technology, The Netherlands;Delft University of Technology, The Netherlands;Delft University of Technology, The Netherlands

  • Venue:
  • Proceedings of the 2005 ACM symposium on Applied computing
  • Year:
  • 2005

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Abstract

Complex application-specific media instructions and kernels are emulated with simple to implement extended subword instructions. We show that assuming extended register file entries to accommodate intermediate results and by implementing a few simple instructions, packing/unpacking, saturation, and frequently used complex instructions can be practically eliminated. It is shown that in most emulations there is a potential performance improvement, making the proposed scheme suitable for embedded processors with a limited hardware budget.