[llvm] [DAG] SelectionDAG::canCreateUndefOrPoison - Mark AVGFLOORS and AVGCE… (PR #148191)

[Jay Foad via llvm-commits]

jayfoad wrote:

Also, I don't understand how your alive2 links are relevant. They verify an expansion of avgfloors/avgceils, but what does this have to do with introducing poison?

https://github.com/llvm/llvm-project/pull/148191