[llvm] LV: Expand llvm.histogram intrinsic to support umax, umin, and uadd.sat operations (PR #127399)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

One thing I noticed is that it seems at least the umax variant of the intrinsic crashes with  +sve2 in the backend. AFAICT the cost model ensures we never generate them though so should not be an issue for the patch.

https://github.com/llvm/llvm-project/pull/127399