[Mlir-commits] [mlir] [mlir][arith] doc updates for ub semantics, and int representations (PR #72932)

[Mehdi Amini]

joker-eph wrote:

> we'd like to leave the overflow behaviour undefined for now,

It's best if you can split this out of this PR. I'm not objecting to this definition: it's reasonable. 
I would just want an RFC to get the visibility this entails before we do so (because we intentionally didn't document it as such originally :) ).

https://github.com/llvm/llvm-project/pull/72932