[bjourne]

Well, yes, but the complexity of TAGE is nowhere near the complexity of a modern deep neural network where you essentially have no chance of figuring out how its predictions are made. Branch predictors based on multi-layer networks, RNNs, LSTMs, or networks with more than a handful of neurons is a hot research topic, but has not, to the best of my knowledge, found their way into any modern cpu.

[artisanspam]

Yes modern CPUs aren't using neural nets in hardware or anything like that for branch prediction. I was referring to TAGE not being a simple state machine. That makes it sound like modern CPUs are just using a basic two-bit branch predictor.