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:
May. 12, 2026
Filed:
Oct. 10, 2024
Apple Inc., Cupertino, CA (US);
David K. Li, Austin, TX (US);
Yoong Chert Foo, London, GB;
Benjiman L. Goodman, Austin, TX (US);
Chance C. Coats, Austin, TX (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques are disclosed relating to cache control in cache hierarchies. In some embodiments, processor execution circuitry is configured to perform operations on input operand data from a first-level cache, including a first operation that reads first data from an entry in the first-level cache and signals an invalidation of the first data. Control circuitry may set an indicator, in response to the first operation, to indicate that the entry in the first-level cache has a pending invalidation (e.g., a last-use indicator). The control circuitry may, in response to a second operation overwriting the entry in the first-level cache while the indicator is set, clear the indicator without invalidating a corresponding entry in a second-level cache. This may advantageously reduce invalidate operations and bandwidth to the second-level cache.