Yeah, I was just now skimming through the comments as well and I saw that. It looks like their constant propagation logic doesn't work on loops at all, and it's

Yeah, I was just now skimming through the comments as well and I saw that. It looks like their constant propagation logic doesn't work on loops at all, and it's just that their loop unroller stage (which runs before it) will unroll loops of less than 10 iterations.