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:
Oct. 19, 2021
Filed:
Jul. 30, 2018
International Business Machines Corporation, Armonk, NY (US);
Salma Ayub, Austin, TX (US);
Sundeep Chadha, Austin, TX (US);
Robert Allen Cordes, Austin, TX (US);
David Allen Hrusecky, Cedar Park, TX (US);
Hung Qui Le, Austin, TX (US);
Dung Quoc Nguyen, Austin, TX (US);
Brian William Thompto, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An execution unit circuit for use in a processor core provides efficient use of area and energy by reducing the per-entry storage requirement of a load-store unit issue queue. The execution unit circuit includes a recirculation queue that stores the effective address of the load and store operations and the values to be stored by the store operations. A queue control logic controls the recirculation queue and issue queue so that that after the effective address of a load or store operation has been computed, the effective address of the load operation or the store operation is written to the recirculation queue and the operation is removed from the issue queue, so that address operands and other values that were in the issue queue entry no longer require storage. When a load or store operation is rejected by the cache unit, it is subsequently reissued from the recirculation queue.