System for instruction completion independent of result write-back responsive to both exception free completion of execution and completion of all logically prior instructions

摘要

A processing system and method of operation are provided. Multiple instructions are dispatched in a sequence to execution circuitry. Ones of the instructions are executed with the execution circuitry, and respective results are output in response thereto, Each executed instruction is completed in response to finishing execution of each instruction preceding the executed instruction in the sequence, independent of whether the results are stored in at least one storage location specified by the completed instructions.