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. 03, 2026
Filed:
Nov. 20, 2023
Apple Inc., Cupertino, CA (US);
Deepankar Duggal, Sunnyvale, CA (US);
Richard F. Russo, San Jose, CA (US);
Ian D. Kountanis, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Register renaming for a deterministically updated register is disclosed. A processor circuit is configured to operate according to an instruction set architecture that defines a plurality of architectural registers. A register file circuit includes a plurality of physical registers having a first subset dedicated for use in renaming a particular architectural register. A first counter value increments in response to execution of an instruction that updates the particular architectural register. A second counter value increments in response to retirement of a previously executed instruction that updated the particular architectural register. The counter values identify respective physical registers. A mapper circuit is configured to determine, in response to an indication that an instruction that updates the particular architectural register, if a physical register is available based on the count values. The physical register to be mapped to the architectural register is selected based on the count value of the first counter.