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:
Mar. 25, 2014
Filed:
Nov. 30, 2010
Krishnan Ramani, Cupertino, CA (US);
Chitresh C. Narasimhaiah, San Jose, CA (US);
David Hugh Mcintyre, Sunnyvale, CA (US);
Krishnan Ramani, Cupertino, CA (US);
Chitresh C. Narasimhaiah, San Jose, CA (US);
David Hugh McIntyre, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A method and a processor load/store unit (LSU) are described for performing store-to-load forwarding (STLF) from an interlocking store. STLF is performed when a starting address of the store and the load do not match, or when a data size of the store is smaller than a data size of the load. The LSU detects a load that interlocks with a store, and determines whether all or only a portion of data bytes needed by the load can be provided by the interlocking store. If it is determined that only a portion of the data bytes needed by the load can be provided by the interlocking store, then that portion of the data bytes is provided by a store data buffer (SDB) and the remaining portion of the data bytes needed by the load is provided by a data cache (DC). Otherwise, the SDB provides all of the data bytes.