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.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Apr. 24, 2019
International Business Machines Corporation, Armonk, NY (US);
Steven J. Battle, Austin, TX (US);
Brandon Goddard, Kirkland, WA (US);
Dung Q. Nguyen, Austin, TX (US);
Joshua W. Bowman, Austin, TX (US);
Brian D. Barrick, Pflugerville, TX (US);
Susan Eisen, Round Rock, TX (US);
Salma Ayub, Austin, TX (US);
Christopher M. Mueller, Round Rock, TX (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
An aspect includes receiving a flush request at a processing unit that is in a current state defined by contents of registers in a register file. The processing unit includes a plurality of slices and the flush request includes an identifier of a previously issued instruction. The processing unit is restored to a previous state defined by contents of the registers in the register file prior to the previously issued instruction being issued. The restoring includes searching previous state buffers in at least two of the plurality of slices to locate data describing the contents of the registers in the register file prior to the previously issued instruction being issued. The restoring also includes combining the located data to generate results of the searching and updating the contents of the registers in the register file using a single port based at least in part on the results.