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

[via llvm-commits]

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@@ -176,6 +176,7 @@ enum AddressSpace : AddressSpaceUnderlyingType {
   Shared = 3,
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modiking wrote:

Will keep it `shared` in this change. We can visit renaming/aliasing later if we want.

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