Precise instruction scheduling without a precise machine model

  • Authors:
  • Henry G. Baker

  • Affiliations:
  • -

  • Venue:
  • ACM SIGARCH Computer Architecture News
  • Year:
  • 1991

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Abstract

A simple technique is presented which allows an optimizing compiler to more precisely compare the performance of alternative instruction sequences on a complex RISC architecture so that the better sequence can be chosen. This technique may be faster than current techniques, and has the advantage that minor modifications to the hardware do not require any changes to the compiler (not even recompilation), and yet have an immediate effect on instruction scheduling decisions.