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. 27, 2011
Filed:
Nov. 25, 2008
Christopher Michael Abernathy, Austin, TX (US);
Jonathan James Dement, Austin, TX (US);
Ronald Hall, Cedar Park, TX (US);
Albert James Van Norstrand, Round Rock, TX (US);
Christopher Michael Abernathy, Austin, TX (US);
Jonathan James Dement, Austin, TX (US);
Ronald Hall, Cedar Park, TX (US);
Albert James Van Norstrand, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system and processor for improving the performance of an in-order processor. A processor may include an execution unit with an execution pipeline that includes a backup pipeline and a regular pipeline. The backup pipeline may store a copy of the instructions issued to the regular pipeline. The execution pipeline may include logic for allowing instructions to flow from the backup pipeline to the regular pipeline following the flushing of the instructions younger than the exception detected in the regular pipeline. By maintaining a backup copy of the instructions issued to the regular pipeline, instructions may not need to be flushed from separate execution pipelines and re-fetched. As a result, one may complete the results of the execution units to the architected state out of order thereby allowing the completion point to vary among the different execution pipelines.