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:
Jul. 27, 1999
Filed:
Jun. 20, 1997
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for addressing internal instructions in an out-of-order processor is proposed, which allows for an efficient register renaming even in case internal instructions are issued to a multitude of window buffers. In this case, it is not clear how internal instructions that stem from one external instruction can be indicated as being 'related'. In the method proposed, a common instruction identifier is assigned to each of the internal instructions of a group of internal instructions representing an external instruction. Furtheron, an offset identifier is assigned to each of said internal instructions in order to be able to unambiguously identify each of said internal instructions. These two identifiers are used as a tag, in order to be able to resolve data dependencies. By use of the invention, exception handling, recovery of mispredicted branches, and committing related instructions corresponding to one external instruction is simplified.