The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 16, 2019

Filed:

Feb. 24, 2017
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Brian R. Prasky, Campbell Hall, NY (US);

David A. Schroter, Round Rock, TX (US);

Chung-Lung K. Shum, Wappingers Falls, NY (US);

Corey C. Stappenbeck, San Francisco, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/30 (2018.01); G06F 9/32 (2018.01); G06F 9/38 (2018.01);
U.S. Cl.
CPC ...
G06F 9/30043 (2013.01); G06F 9/30021 (2013.01); G06F 9/30058 (2013.01); G06F 9/30098 (2013.01); G06F 9/32 (2013.01); G06F 9/384 (2013.01);
Abstract

Systems, methods, and computer-readable media are disclosed for executing a predicted load that bypasses memory access for a load instruction. A first physical register that is predicted as storing a value to be loaded by the load instruction is identified and the value stored in the first physical register is copied to a second physical register for use by a consumer operation. A predicted store instruction corresponding to the load instruction is identified and a mapping table is accessed to obtain data associated with the predicted store instruction. The data is evaluated to determine whether the predicted load meets dependency constraints. As a result of execution of the predicted load, the consumer operation can utilize the data stored in the first physical register directly and bypass the cache memory access that would otherwise be required to execute the load instruction.


Find Patent Forward Citations

Loading…