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

[Alex MacLean via llvm-commits]

================
@@ -982,8 +982,9 @@ void NVPTXDAGToDAGISel::SelectAddrSpaceCast(SDNode *N) {
     case ADDRESS_SPACE_SHARED:
       Opc = TM.is64Bit() ? NVPTX::cvta_shared_64 : NVPTX::cvta_shared;
       break;
-    case ADDRESS_SPACE_DSHARED:
-      Opc = TM.is64Bit() ? NVPTX::cvta_dshared_64 : NVPTX::cvta_dshared;
+    case ADDRESS_SPACE_SHARED_CLUSTER:
+      Opc = TM.is64Bit() ? NVPTX::cvta_shared_cluster_64
+                         : NVPTX::cvta_shared_cluster;
----------------
AlexMaclean wrote:

My understanding is that cluster is not supported until sm_90, and that sm_90+ do not support 32bit compilation. Is there something I'm missing? If not we should never select the 32-bit version here and instead check to ensure we're compiling for sm_90+.

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