Variable partitioning for dual memory bank DSPs

  • Authors:
  • R. Leupers;D. Kotte

  • Affiliations:
  • Dept. of Comput. Sci., Dortmund Univ., Germany;-

  • Venue:
  • ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02
  • Year:
  • 2001

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Abstract

DSPs with dual memory banks offer high memory bandwidth, which is required for high-performance applications. However, such DSP architectures pose problems for C compilers, which are mostly not capable of partitioning program variables between memory banks. As a consequence, time-consuming assembly programming is required for an efficient coding of time-critical algorithms. This paper presents a new technique for automatic variable partitioning between memory banks in compilers, which leads to a higher utilization of available memory bandwidth in the generated machine code. We present experimental results obtained by integrating the proposed technique into an existing C compiler for the AMS Gepard, an industrial DSP core.