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:
Sep. 23, 2025
Filed:
Nov. 30, 2023
Sifive, Inc., San Mateo, CA (US);
Nicolas Rémi Brunie, San Mateo, CA (US);
SiFive, Inc., Santa Clara, CA (US);
Abstract
Systems and methods are disclosed for stateful vector group permutation with storage reuse. For example, some methods may include expanding an element index from a vector of indices to obtain byte indices for respective bytes of a corresponding element; storing the byte indices in corresponding bytes of an intermediate result operand buffer; updating bits in a completion flags buffer to indicate that the corresponding bytes of the intermediate result operand buffer store indices; identifying bytes of an element of the vector of source data pointed to by the element index based on the byte indices stored in the intermediate result operand buffer; overwriting the byte indices in the intermediate result operand buffer with the identified bytes; and, responsive to overwriting the byte indices, updating the corresponding bits in the completion flags buffer to indicate that the corresponding bytes store data to be written to the destination vector.