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:
Feb. 23, 2021
Filed:
Mar. 20, 2019
International Business Machines Corporation, Armonk, NY (US);
Gregory William Alexander, Pflugerville, TX (US);
James Bonanno, Wappingers Falls, NY (US);
Adam Collura, Hopewell Junction, NY (US);
James Raymond Cuffney, Poughkeepsie, NY (US);
Yair Fried, Petah Tiqwa, IL;
Jonathan Hsieh, Poughkeepsie, NY (US);
Jang-Soo Lee, Poughkeepsie, NY (US);
Edward Malley, New Rochelle, NY (US);
Anthony Saporito, Highland, NY (US);
Eyal Naor, Tel-Aviv, IL;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
Provided are embodiments including a computer-implemented method, system and computer program product for determining precise operand-store-compare (OSC) predictions to avoid false dependencies. Some embodiments include detecting an instruction causing an OSC event, wherein the OSC event is at least one of a store-hit-load event or a load-hit-store event, marking an entry in a queue for the instruction based on the detected OSC event, wherein marking the entry comprises setting a bit and saving a tag in the entry in the queue. Some embodiments also include installing an address for the instruction and the tag in the history table responsive to completing the instruction.