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. 21, 2020
Filed:
May. 02, 2016
International Business Machines Corporation, Armonk, NY (US);
Brian D. Barrick, Pflugerville, TX (US);
Joshua W. Bowman, Austin, TX (US);
Jeffrey C. Brownscheidle, Seattle, WA (US);
Sundeep Chadha, Austin, TX (US);
Michael J. Genden, Austin, TX (US);
Dhivya Jeganathan, Austin, TX (US);
Dung Q. Nguyen, Austin, TX (US);
Salim A. Shah, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Embodiments herein describe a reservation station (RS) in a processor that merges control data from multiple sources into a merged control data value. Before an instruction issues, the RS gathers and saves control data indicating how the instruction is to be executed. This control data may be saved in control registers. An instruction, however, can update many different types of status control bits in these registers. As such, the RS may store different types of control data for an instruction. Instead of the RS containing multiple registers and data paths for every type of control data, the embodiments herein describe merge logic in the RS that permits control data from different sources to be merged into a single control data value. Once the instruction is issued, the RS passes the merged control data value to an execution unit for processing.