ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,417,103, issued on Sept. 16, was assigned to SiFive Inc. (Santa Clara, Calif.).
"Fusion with destructive instructions" was invented by Andrew Waterman (Berkeley, Calif.) and Krste Asanovic (Oakland, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are disclosed for fusion with destructive instructions. For example, an integrated circuit (e.g., a processor) for executing instructions includes a fusion circuitry that is configured to detect a sequence of macro-ops stored in a processor pipeline of the processor core, the sequence of macro-ops including a first macro-op identifying a first register as a destination register follow...