1. An apparatus comprising: a processor; and memory storing a first instruction that identifies a first register and a first memory location, wherein the first instruction is executable by the processor to perform operations including: loading a first item from the first memory location; performing a shift operation to shift data items in the first register to remove a first data item of the data items from a first position in the first register; and performing an insert operation to insert the first item into a last position of the first register, wherein execution of the first instruction is completed in a single execution cycle of the processor.