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
@@ -19,6 +19,8 @@
 
 def LLVM_i8Ptr_global : LLVM_IntPtrBase<8, 1>;
 def LLVM_i8Ptr_shared : LLVM_IntPtrBase<8, 3>;
+def LLVM_i64ptr_global : LLVM_IntPtrBase<64, 1>;
+def LLVM_i64ptr_shared : LLVM_IntPtrBase<64, 3>;
 
 //===----------------------------------------------------------------------===//
 // NVVM dialect definitions
@@ -188,13 +190,29 @@
 
 /// mbarrier.init instruction with shared pointer type
 def NVVM_MBarrierInitSharedOp : NVVM_Op<"mbarrier.init.shared">,
-  Arguments<(ins LLVM_i8Ptr_shared:$addr, I32:$count)> {
+  Arguments<(ins LLVM_i64ptr_shared:$addr, I32:$count)> {
   string llvmBuilder = [{
       createIntrinsicCall(builder, llvm::Intrinsic::nvvm_mbarrier_init_shared, {$addr, $count});
   }];
   let assemblyFormat = "$addr `,` $count attr-dict `:` type(operands)";
 }
 
+def NVVM_MBarrierInvalOp : NVVM_Op<"mbarrier.inval">,
+  Arguments<(ins LLVM_AnyPointer:$addr)> {
+  string llvmBuilder = [{
+      createIntrinsicCall(builder, llvm::Intrinsic::nvvm_mbarrier_inval, {$addr});
+  }];
+  let assemblyFormat = "$addr attr-dict `:` type(operands)";
+}
+
+def NVVM_MBarrierInvalSharedOp : NVVM_Op<"mbarrier.inval.shared">,
+  Arguments<(ins LLVM_i64ptr_shared:$addr)> {
+  string llvmBuilder = [{
+      createIntrinsicCall(builder, llvm::Intrinsic::nvvm_mbarrier_inval_shared, {$addr});
+  }];
+  let assemblyFormat = "$addr attr-dict `:` type(operands)";
+}
+
 //===----------------------------------------------------------------------===//
 // NVVM synchronization op definitions
 //===----------------------------------------------------------------------===//
diff --git a/mlir/test/Dialect/LLVMIR/nvvm.mlir b/mlir/test/Dialect/LLVMIR/nvvm.mlir
--- a/mlir/test/Dialect/LLVMIR/nvvm.mlir
+++ b/mlir/test/Dialect/LLVMIR/nvvm.mlir
@@ -353,3 +353,17 @@
   nvvm.mbarrier.init.shared %barrier, %count : !llvm.ptr<3>, i32
   llvm.return
 }
+
+
+llvm.func private @mbarrier_inval_generic(%barrier: !llvm.ptr) {
+  // CHECK:   nvvm.mbarrier.inval %{{.*}} : !llvm.ptr
+  nvvm.mbarrier.inval %barrier : !llvm.ptr
+  llvm.return
+}
+
+
+llvm.func private @mbarrier_inval_shared(%barrier: !llvm.ptr<3>) {
+  // CHECK:   nvvm.mbarrier.inval.shared %{{.*}} : !llvm.ptr<3>
+  nvvm.mbarrier.inval.shared %barrier : !llvm.ptr<3>
+  llvm.return
+}