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:
May. 03, 2011
Filed:
May. 05, 2004
Benjamin T. Sander, Austin, TX (US);
Brian D. Mcminn, Buda, TX (US);
Benjamin T. Sander, Austin, TX (US);
Brian D. McMinn, Buda, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A system and method for scheduling operations using speculative data operands. In one embodiment, a system may include a scheduler configured to store a speculative source tag and a non-speculative source tag for an operand of an operation and an execution core configured to execute operations issued by the scheduler and to output result tags identifying operands generated by executing the operations. The scheduler may be configured to determine whether the operation is ready to issue by comparing the speculative source tag, but not the non-speculative source tag, to the result tags output by the execution core unless an incorrect speculation has been detected. If an incorrect speculation has been detected, the scheduler may be configured to determine whether the operation is ready to issue by comparing the non-speculative source tag, but not the speculative source tag, to the result tags output by the execution core.