[Sesse__]

My point was that there hasn't been a revolution in branch prediction (or really any sort of speculation) the last 5–10 years. Things have become incrementally better as always, and the M1 presumably has some sort of pointer value speculation, but by and large, things are generally similar. So running on a 5–10 year old microarchitecture won't change the qualitative results much.

If you talked about running on a 30-year-old architecture, then sure, that would tell you something about the effect of modern speculation on the code.