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. 27, 2011
Filed:
Apr. 08, 2009
David A. Hrusecky, Cedar Park, TX (US);
David S. Ray, Georgetown, TX (US);
Bruce J. Ronchetti, Austin, TX (US);
Shih-hsiung S. Tung, Austin, TX (US);
David A. Hrusecky, Cedar Park, TX (US);
David S. Ray, Georgetown, TX (US);
Bruce J. Ronchetti, Austin, TX (US);
Shih-Hsiung S. Tung, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A load instruction that accesses data cache may be off natural alignment, which causes a cache line crossing to complete the access. The illustrative embodiments provide a mechanism for loading data across multiple cache lines without the need for an accumulation register or collection point for partial data access from a first cache line while waiting for a second cache line to be accessed. Because the accesses to separate cache lines are concatenated within the vector rename register without the need for an accumulator, an off-alignment load instruction is completely pipeline-able and flushable with no cleanup consequences.