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ISCA
1997
IEEE

A Language for Describing Predictors and Its Application to Automatic Synthesis

10 years 7 months ago
A Language for Describing Predictors and Its Application to Automatic Synthesis
As processor architectures have increased their reliance on speculative execution to improve performance, the importance of accurate prediction of what to execute speculatively has increased. Furthermore, the types of values predicted have expanded from the ubiquitous branch and call/return targets to the prediction of indirect jump targets, cache ways and data values. In general, the prediction process is one of identifying the current state of the system, and making a prediction for some as yet uncomputed value based on that state. Prediction accuracy is improved by learning what is a good prediction for that state using a feedback process at the time the predicted value is actually computed. While there have been a number of efforts to formally characterize this process, we have taken the approach of providing a simple algebraic-style notation that allows one to express this state identification and feedback process. This notation allows one to describe a wide variety of predictors...
Joel S. Emer, Nicholas C. Gloy
Added 06 Aug 2010
Updated 06 Aug 2010
Type Conference
Year 1997
Where ISCA
Authors Joel S. Emer, Nicholas C. Gloy
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