Idealized Piecewise Linear Branch Prediction

@article{Jimnez2005IdealizedPL,
  title={Idealized Piecewise Linear Branch Prediction},
  author={Daniel A. Jim{\'e}nez},
  journal={J. Instruction-Level Parallelism},
  year={2005},
  volume={7}
}
Traditional branch predictors exploit correlations between pattern history and branch outcome to predict branches, but there is a stronger and more natural correlation between path history and branch outcome. I exploit this correlation with piecewise linear branch prediction, an idealized branch predictor that develops a set of linear functions, one for each program path to the branch to be predicted, that separate predicted taken from predicted not taken branches. Taken together, all of these… CONTINUE READING
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