Conclusion

• C compiler’s performance with ANSI C code far from optimal (average of 2.4 times slower)

• Manual C code optimization reduces execution time (by 50%, i.e. average of 1.2 times slower)

• C code optimizations are difficult

  • Numerous possibilities
  • Significant re-organization of code required
  • No generic algorithm for optimization

• C62x assembly code from TI: Arithmetic, filters, FFT/DCT, Viterbi decoders, matrices

  http://www.ti.com/sc/docs/products/dsp/c6000/62bench.htm
  
  http://www.ti.com/sc/docs/dsps/hotline/techbits/c6xfiles.htm

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