ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,932, issued on Dec. 16, was assigned to Apple Inc. (Cupertino, Calif.).
"Physical register sharing" was invented by Deepankar Duggal (Sunnyvale, Calif.), Richard F. Russo (San Jose, Calif.) and Haoyan Jia (Ellicott City, Md.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are disclosed relating to physical register sharing. In some embodiments, a processor includes, in a register file, physical registers of a largest architected register size for a given operand type defined in an instruction set architecture (ISA). A register rename circuit of the processor is configured to assign a first physical register to an architected register of th...