WayGuard and
Way-Prediction access on average 2.41 and 1.43 ways, which
remains mostly constant along all the studied applications.
Thus they perform better than the proposal with a single bit.
Two bits are enough to surpass WayGuard and a third one in
order to surpass Way-Prediction. Using the MRU way as a
prediction does prove to be good enough for first-level caches
providing a good hit ratio.