METHOD FOR MANAGING BRANCH INSTRUCTIONS AND A DEVICE HAVING BRANCH INSTRUCTION MANAGEMENT CAPABILITIES

A method for managing branch instructions, the method includes: providing, to pipeline stages of a processor, multiple variable length groups of instructions; wherein each pipeline stage executes a group of instruction during a single execution cycle; receiving, at a certain execution cycle, multipl...

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Bibliographische Detailangaben
Hauptverfasser: BARAK ITZHAK, DAYAN URI, ROZENBERG IDAN, PELED YUVAL, SALANT YORAM
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for managing branch instructions, the method includes: providing, to pipeline stages of a processor, multiple variable length groups of instructions; wherein each pipeline stage executes a group of instruction during a single execution cycle; receiving, at a certain execution cycle, multiple instruction fetch requests from multiple pipeline stages, each pipeline stage that generates an instruction fetch request stores a variable length group of instructions that comprises a branch instruction; sending to the fetch unit an instruction fetch command that is responsive to a first in order branch instruction in the pipeline stages; wherein if the first in order fetch command is a conditional fetch command then the instruction fetch command comprises a resolved target address; wherein the sending of the instruction fetch command is restricted to a single instruction fetch command per a single execution cycle.