Disabeled RNN fusion pass in IA transformer (#1217)

src/ngraph/runtime/cpu/cpu_external_function.cpp

@@ -348,11 +348,13 @@ void runtime::cpu::CPU_ExternalFunction::compile()
     //in which case they should run this pass(CPUWorkspaceInsertion) explicitly
     NodeVector nv_cwi;
     pass_manager.register_pass<ngraph::pass::NopElimination>();
-    pass_manager.register_pass<runtime::cpu::pass::LSTMFusion>();
-    pass_manager.register_pass<runtime::cpu::pass::RNNFusion>();
+    // TODO (pruthvi): Enable all the disabeled RNN fusion graph pass after fixing
+    // failing mxnet unit tests.
+    // pass_manager.register_pass<runtime::cpu::pass::LSTMFusion>();
+    // pass_manager.register_pass<runtime::cpu::pass::RNNFusion>();
     pass_manager.register_pass<ngraph::pass::AlgebraicSimplification>();
-    pass_manager.register_pass<runtime::cpu::pass::MultiLayerRNNFusion>();
-    pass_manager.register_pass<runtime::cpu::pass::ConcatInputs>();
+    // pass_manager.register_pass<runtime::cpu::pass::MultiLayerRNNFusion>();
+    // pass_manager.register_pass<runtime::cpu::pass::ConcatInputs>();
     pass_manager.register_pass<runtime::cpu::pass::CPUBatchFusion>();
     pass_manager.register_pass<ngraph::pass::CommonSubexpressionElimination>();
     pass_manager.register_pass<ngraph::pass::CoreFusion>();

test/cpu_fusion.cpp

@@ -2591,7 +2591,9 @@ TEST(cpu_fusion, fuse_rnn_across_2layer_1timestep)
     auto int_results = execute(int_f, args, "INTERPRETER");
     auto cpu_results = execute(cpu_f, args, "CPU");
 
-    EXPECT_EQ(1, count_ops_of_type<op::Rnn>(cpu_f));
+    // TODO (pruthvi): Enable this after fixing failing
+    // mxnet rnn unit tests
+    // EXPECT_EQ(1, count_ops_of_type<op::Rnn>(cpu_f));
     for (size_t i = 0; i < cpu_results.size(); i++)
     {
         EXPECT_TRUE(test::all_close(cpu_results.at(1), int_results.at(1), 1.0e-4f, 1.0e-4f));