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. 15, 2020
Filed:
Dec. 03, 2018
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Erik D. Swanson, Ft. Collins, CO (US);
Michael Estlick, Ft. Collins, CO (US);
Sneha V. Desai, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Abstract
Systems, apparatuses, and methods for performing efficient processor pipeline flush recovery are disclosed. A processor core includes a retire queue for storing information of outstanding instructions. When the retire queue logic detects that a pipeline flush condition occurs, the logic creates one or more groups of entries in the retire queue. The logic begins the groups with an entry storing information for a youngest outstanding instruction, and creates other groups in a contiguous manner after creating this first group. The logic marks with a first indication a given group when the given group includes one or more instructions of a given type. The logic marks with a second indication the given group when the given group does not include an instruction of the given type. The logic sends to flush recovery logic information of one or more entries in only groups marked with the first indication.