US Patent Issued to International Business Machines on Feb. 10 for "Multi-level PHT entry swaps based on first level miss and second level hit" (New York Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,408, issued on Feb. 10, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Multi-level PHT entry swaps based on first level miss and second level hit" was invented by James Raymond Cuffney (Poughkeepsie, N.Y.), Dominic Ditomaso (Hyde Park, N.Y.) and Brian Robert Prasky (Campbell Hall, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A branch prediction logic system includes a branch history table (BHT), a multi-level history table, and a prediction update queue. The BHT includes a plurality of lines, each line corresponding to at least one branch instruction and containing history information specific to the at least one branc...