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. 04, 2010
Filed:
Oct. 08, 2007
James N. Dieffenderfer, Apex, NC (US);
Richard W. Doing, Raleigh, NC (US);
Brian M. Stempel, Raleigh, NC (US);
Steven R. Testa, Durham, NC (US);
Kenichi Tsuchiya, Cary, NC (US);
James N. Dieffenderfer, Apex, NC (US);
Richard W. Doing, Raleigh, NC (US);
Brian M. Stempel, Raleigh, NC (US);
Steven R. Testa, Durham, NC (US);
Kenichi Tsuchiya, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus for executing instructions in a pipeline processor. The method decreases the latency between an instruction cache and a pipeline processor when bubbles occur in the processing stream due to an execution of a branch correction, or when an interrupt changes the sequence of an instruction stream. The latency is reduced when a decode stage for detecting branch prediction and a related instruction queue location have invalid data representing a bubble in the processing stream. Instructions for execution are inserted in parallel into the decode stage and instruction queue, thereby reducing by one cycle time the length of the pipeline stage.