Prediction of load-store dependencies in a processing agent

Details Prediction of load-store dependencies in a processing agent Prediction of load-store dependencies in a processing agent

2007-02-20

2007-02-20

Fleming, Fritz (Department: 2181)

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Scoreboarding, reservation station, or aliasing

C712S225000, C712S214000, C711S125000

Reexamination Certificate

active

10146956

ABSTRACT:
In a processing core, a newly received load instruction may be dependent upon a previously received store instruction. The core may include a predictor to predict such dependencies and provide an identification of a colliding store instruction. The load instruction may be stored in a scheduler with a dependency marker. Thereafter, the load instruction may be prevented from executing until after execution of the colliding store. Upon execution of the load, the accuracy of the prediction is confirmed. Upon retirement of the load instruction, new prediction results may be provided to the predictor.

REFERENCES:
patent: 5557763 (1996-09-01), Senter et al.
patent: 5691920 (1997-11-01), Levine et al.
patent: 5781752 (1998-07-01), Moshovos et al.
patent: 5898854 (1999-04-01), Abramson et al.
patent: 5987595 (1999-11-01), Yoaz et al.
patent: 6108770 (2000-08-01), Chrysos et al.
patent: 6622237 (2003-09-01), Keller et al.
Rotenberg, Eric, et al. Trace Cache: a Low Latency Approach to High Bandwidth Instruction Fetching, 1996, IEEE, pp. 24-34.
Hennessy, et al., Computer Architecture: A Quantative Apporach, 1996, Morgan Kaufman, Inc., Second Edition, pp. 40,41, 377-380, 660-661, 242-251.
Hennessy et al, Section 5.5 “Microprogramming: Simplifying Control Design”,Computer Organization and Design, The Hardware/Software Interface, pp. 399-400, 2nd edition, Morgan Kaufmann Publishers, Inc., San Francisco, California, 1998.
Related U.S. Appl. No. 09/964,807, filed Sep. 28, 2001.

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