1. A method of operating a processing system, the method comprising: identifying a first load instruction in a main processor for offloading to a coprocessor; committing the first load instruction in the main processor without receiving, by the main processor, first load data for satisfying the first load instruction, wherein committing the first load instruction comprises completing a main processor part of the first load instruction by updating a first register specified in the first load instruction, in a main register file in the main processor; and offloading processing of the first load instruction to the coprocessor after the committing in the main processor.