[onert] Create a backend only for the ones in BACKENDS config

This commit creates a backend only for the ones in BACKENDS config.

ONE-DCO-1.0-Signed-off-by: Jiyoung Yun <[email protected]>

runtime/onert/core/src/compiler/ExecutorFactory.cc

@@ -157,15 +157,25 @@ void initializeSubgraphIOTensors(compiler::ILoweredGraph &lowered_graph,
 
 backend::BackendContexts
 createBackendContexts(compiler::ILoweredGraph &lgraph, bool linear_executor,
-                      std::shared_ptr<backend::custom::IKernelBuilder> custom_kernel_builder)
+                      std::shared_ptr<backend::custom::IKernelBuilder> custom_kernel_builder,
+                      const std::vector<std::string> &backend_list)
 {
   backend::BackendContexts contexts;
   auto &backend_manager = compiler::BackendManager::get();
 
   std::unordered_map<const backend::Backend *, backend::ContextData> context_data_map;
 
+  std::vector<const backend::Backend *> backends;
+  for (const auto &backend_name : backend_list)
+  {
+    auto backend = backend_manager.get(backend_name);
+    if (backend)
+      backends.push_back(backend);
+  }
+  backends.push_back(backend_manager.getBuiltin());
+
   // Generate partial graphs for each backend
-  for (auto &&backend : backend_manager.getAll())
+  for (auto &&backend : backends)
   {
     auto &data = context_data_map[backend];
     auto graph = std::make_unique<ir::Graph>();
@@ -391,8 +401,8 @@ ExecutorFactory::createLinearExecutor(std::unique_ptr<compiler::LoweredGraph> lo
   auto custom_kernel_builder = args.custom_kernel_builder;
   auto &graph = lowered_graph->graph();
 
-  backend::BackendContexts backend_contexts =
-    createBackendContexts(*lowered_graph, options->executor == "Linear", custom_kernel_builder);
+  backend::BackendContexts backend_contexts = createBackendContexts(
+    *lowered_graph, options->executor == "Linear", custom_kernel_builder, options->backend_list);
 
   TensorRegistries tensor_regs{backend_contexts, true};
 
@@ -525,8 +535,8 @@ ExecutorFactory::createDataflowExecutor(std::unique_ptr<compiler::LoweredGraph>
   const auto tracing_ctx = args.tracing_ctx;
   auto custom_kernel_builder = args.custom_kernel_builder;
 
-  backend::BackendContexts backend_contexts =
-    createBackendContexts(*lowered_graph, options->executor == "Linear", custom_kernel_builder);
+  backend::BackendContexts backend_contexts = createBackendContexts(
+    *lowered_graph, options->executor == "Linear", custom_kernel_builder, options->backend_list);
 
   TensorRegistries tensor_regs{backend_contexts, true};
 
@@ -672,7 +682,7 @@ exec::IExecutor *ExecutorFactory::createTrainableExecutor(
   // TODO Create context only once instead of replacing
   backend::train::TrainableBackendContexts tbackend_contexts;
   backend::BackendContexts base_backend_contexts =
-    createBackendContexts(*lowered_graph, true, custom_kernel_builder);
+    createBackendContexts(*lowered_graph, true, custom_kernel_builder, options->backend_list);
 
   // Replace BackendContext with TrainbleBackendContext
   for (auto &&pair : base_backend_contexts)