diff --git a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
@@ -101,13 +101,13 @@
                                                "__ockl_get_local_size", 2>;
 
 def ROCDL_GridDimXOp : ROCDL_DeviceFunctionOp<"grid.dim.x",
-                                               "__ockl_get_global_size", 0>;
+                                               "__ockl_get_num_groups", 0>;
 
 def ROCDL_GridDimYOp : ROCDL_DeviceFunctionOp<"grid.dim.y",
-                                               "__ockl_get_global_size", 1>;
+                                               "__ockl_get_num_groups", 1>;
 
 def ROCDL_GridDimZOp : ROCDL_DeviceFunctionOp<"grid.dim.z",
-                                               "__ockl_get_global_size", 2>;
+                                               "__ockl_get_num_groups", 2>;
 
 //===----------------------------------------------------------------------===//
 // Synchronization primitives
diff --git a/mlir/test/Target/LLVMIR/rocdl.mlir b/mlir/test/Target/LLVMIR/rocdl.mlir
--- a/mlir/test/Target/LLVMIR/rocdl.mlir
+++ b/mlir/test/Target/LLVMIR/rocdl.mlir
@@ -20,11 +20,11 @@
   %8 = rocdl.workgroup.dim.y : i64
   // CHECK: call i64 @__ockl_get_local_size(i32 2)
   %9 = rocdl.workgroup.dim.z : i64
-  // CHECK: call i64 @__ockl_get_global_size(i32 0)
+  // CHECK: call i64 @__ockl_get_num_groups(i32 0)
   %10 = rocdl.grid.dim.x : i64
-  // CHECK: call i64 @__ockl_get_global_size(i32 1)
+  // CHECK: call i64 @__ockl_get_num_groups(i32 1)
   %11 = rocdl.grid.dim.y : i64
-  // CHECK: call i64 @__ockl_get_global_size(i32 2)
+  // CHECK: call i64 @__ockl_get_num_groups(i32 2)
   %12 = rocdl.grid.dim.z : i64
 
   // CHECK: call i32 @llvm.amdgcn.workitem.id.x(),{{.*}} !range ![[$RANGE:[0-9]+]]