diff --git a/mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td
@@ -249,6 +249,30 @@
 def NVVM_GridDimYOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.nctaid.y">;
 def NVVM_GridDimZOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.nctaid.z">;
 
+//===----------------------------------------------------------------------===//
+// CTA Cluster index and range
+def NVVM_ClusterIdXOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.clusterid.x">;
+def NVVM_ClusterIdYOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.clusterid.y">;
+def NVVM_ClusterIdZOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.clusterid.z">;
+def NVVM_ClusterDimXOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.nclusterid.x">;
+def NVVM_ClusterDimYOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.nclusterid.y">;
+def NVVM_ClusterDimZOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.nclusterid.z">;
+
+
+//===----------------------------------------------------------------------===//
+// CTA index and range within Cluster
+def NVVM_BlockInClusterIdXOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.ctaid.x">;
+def NVVM_BlockInClusterIdYOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.ctaid.y">;
+def NVVM_BlockInClusterIdZOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.ctaid.z">;
+def NVVM_GridInClusterDimXOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.nctaid.x">;
+def NVVM_GridInClusterDimYOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.nctaid.y">;
+def NVVM_GridInClusterDimZOp : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.nctaid.z">;
+
+//===----------------------------------------------------------------------===//
+// CTA index and across Cluster dimensions
+def NVVM_ClusterId : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.ctarank">;
+def NVVM_ClusterDim : NVVM_SpecialRegisterOp<"read.ptx.sreg.cluster.nctarank">;
+
 //===----------------------------------------------------------------------===//
 // NVVM approximate op definitions
 //===----------------------------------------------------------------------===//
diff --git a/mlir/test/Target/LLVMIR/nvvmir.mlir b/mlir/test/Target/LLVMIR/nvvmir.mlir
--- a/mlir/test/Target/LLVMIR/nvvmir.mlir
+++ b/mlir/test/Target/LLVMIR/nvvmir.mlir
@@ -30,6 +30,35 @@
   %13 = nvvm.read.ptx.sreg.warpsize : i32
   // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.laneid()
   %14 = nvvm.read.ptx.sreg.laneid : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.clusterid.x
+  %15 = nvvm.read.ptx.sreg.clusterid.x : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.clusterid.y
+  %16 = nvvm.read.ptx.sreg.clusterid.y : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.clusterid.z
+  %17 = nvvm.read.ptx.sreg.clusterid.z : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.nclusterid.x
+  %18 = nvvm.read.ptx.sreg.nclusterid.x : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.nclusterid.y
+  %19 = nvvm.read.ptx.sreg.nclusterid.y : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.nclusterid.z
+  %20 = nvvm.read.ptx.sreg.nclusterid.z : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.ctaid
+  %21 = nvvm.read.ptx.sreg.cluster.ctaid.x : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.ctaid
+  %22 = nvvm.read.ptx.sreg.cluster.ctaid.y : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.ctaid
+  %23 = nvvm.read.ptx.sreg.cluster.ctaid.z : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.nctaid
+  %24 = nvvm.read.ptx.sreg.cluster.nctaid.x : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.nctaid
+  %25 = nvvm.read.ptx.sreg.cluster.nctaid.y : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.nctaid
+  %26 = nvvm.read.ptx.sreg.cluster.nctaid.z : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.ctarank
+  %27 = nvvm.read.ptx.sreg.cluster.ctarank : i32
+  // CHECK: call i32 @llvm.nvvm.read.ptx.sreg.cluster.nctarank
+  %28 = nvvm.read.ptx.sreg.cluster.nctarank : i32
+  
   llvm.return %1 : i32
 }