Merge pull request #2315 from NervanaSystems/krovatkin/ml_reuse_debug

Add a trace when we reuse inputs in Memory Layout

src/ngraph/pass/memory_layout.cpp

@@ -71,6 +71,8 @@ bool pass::MemoryLayout::run_on_function(shared_ptr<ngraph::Function> function)
                              (m_disable_memory_sharing && !oi_pair.destructive)) &&
                             node->liveness_new_list.count(output) != 0)
                         {
+                            NGRAPH_DEBUG << "Reusing " << input->get_name() << " for "
+                                         << output->get_name();
                             in_place_outputs.insert({output, input});
                             reused_inputs.insert(input);
                         }