diff --git a/mlir/include/mlir/Interfaces/InferTypeOpInterface.td b/mlir/include/mlir/Interfaces/InferTypeOpInterface.td
--- a/mlir/include/mlir/Interfaces/InferTypeOpInterface.td
+++ b/mlir/include/mlir/Interfaces/InferTypeOpInterface.td
@@ -116,4 +116,20 @@
   ];
 }
 
+// Convenience class grouping together type and shaped type op interfaces for
+// ops that have tensor return types.
+class InferTensorType<list<string> overridenMethods = []> {
+  list<OpTrait> traits = [
+    // Op implements infer type op interface.
+    InferTypeOpInterface,
+    // The op will have methods implementing the ShapedType type inference
+    // interface.
+    DeclareOpInterfaceMethods<InferShapedTypeOpInterface, overridenMethods>,
+    // The op produces tensors and will use the ShapedType type infer interface
+    // along with knowledge that it is producing Tensors to infer the type.
+    NativeOpTrait<"InferTensorType">
+  ];
+}
+defvar InferTensorTypeWithReify = InferTensorType<["reifyReturnTypeShapes"]>;
+
 #endif // MLIR_INFERTYPEOPINTERFACE
diff --git a/mlir/test/lib/Dialect/Test/TestOps.td b/mlir/test/lib/Dialect/Test/TestOps.td
--- a/mlir/test/lib/Dialect/Test/TestOps.td
+++ b/mlir/test/lib/Dialect/Test/TestOps.td
@@ -503,24 +503,10 @@
   let results = (outs AnyTensor);
 }
 
-def InferTensorType : NativeOpTrait<"InferTensorType">;
 def OpWithShapedTypeInferTypeInterfaceOp : TEST_Op<"op_with_shaped_type_infer_type_if",
-  [
-     // Op implements infer type op interface.
-     InferTypeOpInterface,
-     // The op will have methods implementing the ShapedType type infer interface.
-     DeclareOpInterfaceMethods<InferShapedTypeOpInterface>,
-     // The op produces tensors and will use the ShapedType type infer interface
-     // along with knowledge that it is producing Tensors to infer shape.
-     InferTensorType
-   ]> {
+      InferTensorTypeWithReify.traits> {
   let arguments = (ins AnyTensor, AnyTensor);
   let results = (outs AnyTensor);
-
-  let extraClassDeclaration = [{
-    LogicalResult reifyReturnTypeShapes(OpBuilder &builder,
-                                        SmallVectorImpl<Value> &shapes);
-  }];
 }
 
 def IsNotScalar : Constraint<CPred<"$0.getType().getRank() != 0">>;