Interpreter tweaks (#311)

* Replace function->get_result()->get_outputs() call with function->get_outputs()

* Test for parameter straight to output

* Roll back cmake modification for INTERPRETER autodiff

src/ngraph/runtime/interpreter/int_call_frame.cpp

@@ -48,8 +48,8 @@ void runtime::interpreter::INT_CallFrame::call(
     }
     for (size_t i = 0; i < output_tvs.size(); i++)
     {
-        descriptor::Output& output = function->get_result()->get_outputs().at(i);
-        shared_ptr<descriptor::TensorView> tv = output.get_tensor_view();
+        descriptor::Output* output = function->get_outputs().at(i);
+        shared_ptr<descriptor::TensorView> tv = output->get_tensor_view();
         string name = tv->get_tensor().get_name();
         tensor_map.insert({name, output_tvs[i]});
     }

test/backend_test.in.cpp

@@ -4596,3 +4596,23 @@ TEST(DISABLED_${BACKEND_NAME}, dot_4d_5d_multi_axis_big_fp64_VERY_SLOW)
             2.48832492480234188800e+18, 2.48832518400031897600e+18},
         result->get_vector<double>()));
 }
+
+TEST(${BACKEND_NAME}, DISABLED_parameter_to_output)
+{
+    auto shape = Shape{2, 2};
+    auto A = make_shared<op::Parameter>(element::Float32::element_type(), shape);
+    auto f = make_shared<Function>(A, op::Parameters{A});
+
+    auto manager = runtime::Manager::get("${BACKEND_NAME}");
+    auto external = manager->compile(f);
+    auto backend = manager->allocate_backend();
+    auto cf = backend->make_call_frame(external);
+
+    // Create some tensors for input/output
+    auto a = backend->make_primary_tensor_view(element::Float32::element_type(), shape);
+    copy_data(a, vector<float>{1, -2, 0, -4.8f});
+    auto result = backend->make_primary_tensor_view(element::Float32::element_type(), shape);
+
+    cf->call({a}, {result});
+    EXPECT_EQ((vector<float>{1, -2, 0, -4.8f}), result->get_vector<float>());
+}