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. 28, 2016
Filed:
Sep. 30, 2014
International Business Machines Corporation, Armonk, NY (US);
James J. Bonanno, Wappingers Falls, NY (US);
Akash V. Giri, Austin, TX (US);
Ulrich Mayer, Weil im Schoenbuch, DE;
Brian R. Prasky, Wappingers Falls, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
Embodiments relate to asynchronous lookahead hierarchical branch prediction. An aspect includes a computer-implemented method for asynchronous lookahead hierarchical branch prediction using a second-level branch target buffer. The method includes receiving a search request to locate branch prediction information associated with a search address. The method further includes searching, by a processing circuit, for an entry corresponding to the search request in a first-level branch target buffer. The method also includes, based on failing to locate a matching entry in the first-level branch target buffer corresponding to the search request, initiating, by the processing circuit, a secondary search to locate entries in the second-level branch target buffer having a memory region corresponding to the search request. The method additionally includes, based on locating the entries in the second-level branch target buffer, performing a bulk transfer of the entries from the second-level branch target buffer.