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:
Jun. 12, 2018
Filed:
Dec. 26, 2015
Intel Corporation, Santa Clara, CA (US);
Vineeth Mekkat, San Jose, CA (US);
Oleg Margulis, Los Gatos, CA (US);
Jason M. Agron, San Jose, CA (US);
Ethan Schuchman, Santa Clara, CA (US);
Sebastian Winkel, Los Altos, CA (US);
Youfeng Wu, Palo Alto, CA (US);
Gisle Dankel, Santa Clara, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Apparatus and method for detecting and recovering from incorrect memory dependence speculation in an out-of-order processor are described herein. For example, one embodiment of a method comprises: executing a first load instruction; detecting when the first load instruction experiences a bad store-to-load forwarding event during execution; tracking the occurrences of bad store-to-load forwarding event experienced by the first load instruction during execution; controlling enablement of an S-bit in the first load instruction based on the tracked occurrences; generating a plurality of load operations responsive to an enabled S-bit in first load instruction, wherein execution of the plurality of load operations produces a result equivalent to that from the execution of the first load instruction.