nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqf3nlrmpjja65pzmvlegyl27l0y2m007nncxttdwqndrejajvdzask6gyrf (nprofile…gyrf) I think you'd see it within the first ten minutes of https://www.youtube.com/watch?v=7ofnlCFzlqg
It's this llvm::TrailingObjects thing, though I don't understand it well, and on a quick skim I don't see them applying this to an entire basic block. It does seem like the goal here is to avoid pointer chasing either way.