[llvm] AMDGPU: Remove flat/global fmin/fmax intrinsics (PR #105642)

[Gheorghe-Teodor Bercea via llvm-commits]

doru1004 wrote:

> > @arsenm can you provide an alternative to the current functionality which you are removing?
> 
> Use atomicrmw with appropriate metadata. See the autoupgrade code

Are you exposing something like Intrinsic::atomicrmw which I can call from Clang code gen?

https://github.com/llvm/llvm-project/pull/105642