\(5.13.\)Performance Improvement Techniques

• Basic coding principles:

  • Eliminate excessive function calls. Move computations out of loops when possible.

  • Eliminate unnecessary memory references. Introduce temporary variables to hold intermediate results.

• Low-level optimizations:

  • Unroll loops.

  • Find ways to increase instruction-level parallelism by techniques such as multiple accumulators and reassociation.

  • Rewrite conditional operations in a functional style to enable compilation via conditional data transfers.