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.

Date of Patent:
Jan. 08, 2019

Filed:

Mar. 17, 2016
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Richard J. Eickemeyer, Rochester, MN (US);

Sheldon Levenstein, Austin, TX (US);

David S. Levitan, Austin, TX (US);

Mauricio J. Serrano, Bronx, NY (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/38 (2018.01); G06F 9/32 (2018.01); G06F 12/0891 (2016.01); G06F 12/0875 (2016.01); G06F 12/0862 (2016.01); G06F 9/30 (2018.01);
U.S. Cl.
CPC ...
G06F 9/3802 (2013.01); G06F 9/30043 (2013.01); G06F 9/32 (2013.01); G06F 12/0862 (2013.01); G06F 12/0875 (2013.01); G06F 12/0891 (2013.01); G06F 2212/452 (2013.01);
Abstract

Instruction prefetching in a computer processor includes, upon a miss in an instruction cache for an instruction cache line: retrieving, for the instruction cache line, a prefetch prediction vector, the prefetch prediction vector representing one or more cache lines of a set of contiguous instruction cache lines following the instruction cache line to prefetch from backing memory; and prefetching, from backing memory into the instruction cache, the instruction cache lines indicated by the prefetch prediction vector.


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