[llvm-branch-commits] [llvm] [AMDGPU] Introduce subtarget features `FeatureLDSAllocGranularity<size>` and expose them to the frontend (PR #220394)

[Chinmay Deshpande via llvm-branch-commits]

https://github.com/chinmaydd stacked https://github.com/llvm/llvm-project/pull/220394