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:
Oct. 15, 2019
Filed:
Sep. 18, 2017
Apple Inc., Cupertino, CA (US);
Constantin Pistol, Cupertino, CA (US);
Ian D. Kountanis, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Systems, apparatuses, and methods for efficient program flow prediction. After receiving a current fetch address, a first predictor performs a lookup of a first table. When the lookup results in a miss and the first table has no available entries, the first predictor overwrites a given entry of the first table with the received fetch address, in response to detecting a strength value for the given entry is below a threshold. Otherwise, in response to detecting no entries of the first table have a strength value below the threshold, the first predictor allocates an entry in the second table for the received fetch address. When an indication of a target address for the received fetch address is a return address for a function call, a third predictor allocates an entry of a third table with the received fetch address.