ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,829, issued on Dec. 2, was assigned to SiFive Inc. (Santa Clara, Calif.).
"Macro-op fusion for pipelined architectures" was invented by Andrew Waterman (Berkeley, Calif.), Krste Asanovic (Oakland, Calif.) and Josh Smith (San Francisco).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are disclosed for macro-op fusion in pipelined architectures. For example, some methods include detecting a sequence of macro-ops stored in an instruction decode buffer, the sequence of macro-ops including a first macro-op, followed by one or more intervening macro-ops, followed by a last macro-op; determining a micro-op that is equivalent to the first m...