ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,423,408, issued on Sept. 23, was assigned to Apple Inc. (Cupertino, Calif.).

"Systems and methods for optimizing authentication branch instructions" was invented by Conrado Blasco (Sunnyvale, Calif.), Ian D. Kountanis (Santa Clara, Calif.), Douglas C. Holman (San Jose, Calif.), Sean M. Reynolds (Cupertino, Calif.) and Richard F. Russo (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, apparatuses, and methods for efficient handling of subroutine epilogues. When an indirect control transfer instruction corresponding to a procedure return for a subroutine is identified, the return address and a signature are retrieved from one or m...