[clang] [llvm] [mlir] [NVPTX] Add support for Shared Cluster Memory address space. (PR #135444)

[Alex MacLean via llvm-commits]

https://github.com/AlexMaclean commented:

llvm changes LGTM, though I'm not too familiar with the MLIR portion of this change. 

https://github.com/llvm/llvm-project/pull/135444