[llvm] [mlir] Add usub_cond and usub_sat operations to atomicrmw (PR #105568)

[via llvm-commits]

anjenner wrote:

> I've put in a workaround: [e1fdaaa](https://github.com/llvm/llvm-project/commit/e1fdaaafc51bf7323813139b2809ffea43e65ee4).

Thanks, Kazu. That looks fine for now but the proper fix is part of https://github.com/llvm/llvm-project/pull/105553 .

https://github.com/llvm/llvm-project/pull/105568