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:
Mar. 27, 2012
Filed:
Apr. 04, 2008
Tong Chen, Yorktown Heights, NY (US);
Marc Gonzalez Tallada, Yorktown Heights, NY (US);
Zehra N. Sura, Yorktown Heights, NY (US);
Tao Zhang, Yorktown Heights, NY (US);
Tong Chen, Yorktown Heights, NY (US);
Marc Gonzalez tallada, Yorktown Heights, NY (US);
Zehra N. Sura, Yorktown Heights, NY (US);
Tao Zhang, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Dynamically controlling a prefetching range of a software controlled cache is provided. A compiler analyzes source code to identify at least one of a plurality of loops that contain irregular memory references. For each irregular memory reference in the source code, the compiler determines whether the irregular memory reference is a candidate for optimization. Responsive to identifying an irregular memory reference that may be optimized, the complier determines whether the irregular memory reference is valid for prefetching. If the irregular memory reference is valid for prefetching, a store statement for an address of the irregular memory reference is inserted into the at least one loop. A runtime library call is inserted into a prefetch runtime library to dynamically prefetch the irregular memory references. Data associated with the irregular memory references are dynamically prefetched into the software controlled cache when the runtime library call is invoked.