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:
Feb. 17, 2026
Filed:
Apr. 26, 2023
Sifive, Inc., San Mateo, CA (US);
Bradley Gene Burgess, Sunset Valley, TX (US);
David Kravitz, Cambridge, MA (US);
SiFive, Inc., Santa Clara, CA (US);
Abstract
Apparatus and methods for dependency tracking, chaining, and/or fusing for vector instructions. A system, processor, or integrated circuit includes a renamer to generate a valid bit mask for each micro-operation decoded from a first vector instruction, where the valid bit mask indicates what portion of a mask register to write and generate a dependency bit mask for each micro-operation decoded from a second vector instruction, where the dependency bit mask is based on a relationship between the first vector instruction and the second vector instruction, and an issue queue configured to issue for execution each micro-operation from the second vector instruction when an associated dependency bit mask is cleared based on execution of appropriate micro-operations from the first vector instruction.