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:
Oct. 16, 2007
Filed:
Dec. 02, 2002
Stephan J. Jourdan, Portland, OR (US);
Freddy Gabbay, Tel-Aviv, IL;
Ronny Ronen, Haifa, IL;
Adi Yoaz, Austin, TX (US);
Stephan J. Jourdan, Portland, OR (US);
Freddy Gabbay, Tel-Aviv, IL;
Ronny Ronen, Haifa, IL;
Adi Yoaz, Austin, TX (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
The present invention is directed to an apparatus and method for data collapsing based on control-flow speculation (conditional branch predictions). Because conditional branch outcomes are resolved based on actual data values, the conditional branch prediction provides potentially valuable insight into data values. Upon encountering a branch if equal instruction and this instruction is predicted as taken or a branch if not equal instruction and this instruction is predicted as not taken, this invention assumes that the two operands used to determine the conditional branch are equal. The data predictions are safe because a data misprediction means a conditional branch misprediction which results in a pipeline flush of the instructions following the conditional branch instruction including the data mispredictions.