International Business Machines Corporation
Instruction dispatch routing

Abstract:

A method of instruction dispatch routing comprises receiving an instruction for dispatch to one of a plurality of issue queues; determining a priority status of the instruction; selecting a rotation order based on the priority status, wherein a first rotation order is associated with priority instructions and a second rotation order, different from the first rotation order, is associated with non-priority instructions; selecting an issue queue of the plurality of issue queues based on the selected rotation order; and dispatching the instruction to the selected issue queue.