COMPMID-793 : Add graph intermediate representation

Change-Id: Ic1685de4e19e0ac79669ef2da64e1dc96c7ea0bf
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/115248
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/graph2/backends/CL/CLFunctionFactory.h b/arm_compute/graph2/backends/CL/CLFunctionFactory.h
new file mode 100644
index 0000000..94fd2b8
--- /dev/null
+++ b/arm_compute/graph2/backends/CL/CLFunctionFactory.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_GRAPH2_CLFUNCTIONFACTORY_H__
+#define __ARM_COMPUTE_GRAPH2_CLFUNCTIONFACTORY_H__
+
+#include "arm_compute/runtime/IFunction.h"
+
+#include <memory>
+
+namespace arm_compute
+{
+namespace graph2
+{
+// Forward declarations
+class INode;
+class GraphContext;
+
+namespace backends
+{
+/** Factory for generating OpenCL backend functions **/
+class CLFunctionFactory final
+{
+public:
+    /** Create a backend execution function depending on the node type
+     *
+     * @param[in] node Node to create the backend function for
+     * @param[in] ctx  Context to use
+     *
+     * @return Backend function
+     */
+    static std::unique_ptr<arm_compute::IFunction> create(INode *node, GraphContext &ctx);
+};
+} // namespace backends
+} // namespace graph2
+} // namespace arm_compute
+#endif //__ARM_COMPUTE_GRAPH2_CLFUNCTIONFACTORY_H__