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:
Sep. 09, 2014
Filed:
Oct. 08, 2009
Thomas C. Mcdonald, Austin, TX (US);
Thomas C. McDonald, Austin, TX (US);
VIA Technologies, Inc., New Taipei, TW;
Abstract
A microprocessor includes a branch target address cache (BTAC), each entry thereof configured to store branch prediction information for at most N branch instructions. An execution unit executes a branch instruction previously fetched in a fetch quantum. Update logic determines whether the BTAC is already storing information for N branch instructions within the fetch quantum (N is at least two), updates the BTAC for the branch instruction if the BTAC is not already storing information for N branch instructions, determines whether a type of the branch instruction has a higher replacement priority than a type of the N branch instructions if the BTAC is already storing information for N branch instructions, and updates the BTAC for the branch instruction if the type of the branch instruction has a higher replacement priority than the type of the N branch instructions already stored in the BTAC.