1. A method, in a processing device, for issuing instructions, the method comprising: receiving an instruction for dispatch to one of a plurality of execution units in the processing device; analyzing a tag register to determine whether a previous tag associated with a previous instruction has been stored in the tag register; responsive to the previous tag associated with the previous instruction failing to be stored in the tag register, storing a tag corresponding to the instruction in the tag register; and dispatching the instruction to an issue queue for issue to the one of the plurality of execution units.