This very simple and mostly useless operation has no side effects, and can be used to verify that arguments are making it into gem5, being operated on, and then that a result can be returned into the simulation. Change-Id: I29bce824078526ff77513c80365f8fad88fef128 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/27557 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>