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:
Dec. 02, 2008
Filed:
Dec. 22, 2005
Abid Ali, San Jose, CA (US);
Jiejun LU, Sunnyvale, CA (US);
Brian F. Keish, San Jose, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
In one embodiment, a processor comprises a branch prediction array, an index generator coupled to the branch prediction array, and a control unit coupled to the index generator. The branch prediction array is configured to store a plurality of branch predictions for conditional branches. The index generator is configured to generate an index to the branch prediction array responsive to at least a portion of a fetch address corresponding to a fetch request that is at a first pipeline stage of the processor and further responsive to a branch history. The control unit is configured to update the branch history responsive to a first fetch request at the first pipeline stage and to defer the update for a second fetch request to a second pipeline stage subsequent to the first pipeline stage.