[llvm] [llvm][opt][Transforms] Preserve AMDGPU atomic metadata (PR #140314)

[Alex Voicu via llvm-commits]

AlexVlx wrote:

I'm closing this after looking at changing the default behaviour, since that seems unnecessary (things already work as intended when MD matches). Apologies for the noise.

https://github.com/llvm/llvm-project/pull/140314