Critical path reduction for scalar programs

  title={Critical path reduction for scalar programs},
  author={Mike Schlansker and Vinod Kathail},
  journal={Proceedings of the 28th Annual International Symposium on Microarchitecture},
Pipelined processors employ hardware bypassing to eliminate certain pipeline hazards. By passing is logically simple but can be costly, especially in wide issue and deeply pipelined machines. In this paper bypassing is studied in detail, with an emphasis on designs in which the bypassing network is not complete. Cycle-level simulations of a model of integer and floating-point pipelines running some of the SPEC92 benchmarks show that at least half of the instructions executed used a bypassed… CONTINUE READING