Electrical computers and digital processing systems: memory – Address formation – Generating prefetch – look-ahead – jump – or predictive address
Reexamination Certificate
2008-09-23
2008-09-23
Dollinger, Tonia L. M. (Department: 2181)
Electrical computers and digital processing systems: memory
Address formation
Generating prefetch, look-ahead, jump, or predictive address
C712S240000
Reexamination Certificate
active
09750150
ABSTRACT:
A multi-mode predictor for a processor having a plurality of prediction modes is disclosed. The prediction modes are used to predict non-binary values. The predictor is a multi-mode predictor comprising a per-IP (“PIP”) table and a next value table. The PIP table includes a plurality of PIP information fields and the next value table includes a plurality of fields. The multi-mode predictor also includes a plurality of prediction modes. The processor includes a set of instructions that index the PIP table to provide a valid signal. The processor also includes a set of predicted values for the set of instructions. The set of predicted values is stored in the PIP table and the next value table. According to the valid signal a hit/miss condition in the next value table, a predicted value is selected from the PIP table or the next value table.
REFERENCES:
Wang, Kai, et al., Highly Accurate Data Value Prediction using Hybrid Predictors, 1997, IEEE Proceedings of the 30thAnnual International Symposium on Microarchitecture, pp. 281-290.
Bekerman Michael
Jourdan Stephan J.
Rappoport Lihu
Ronen Ronny
Dollinger Tonia L. M.
Intel Corporation
Kenyon & Kenyon LLP
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