IVGCVSW-7173 Add Rsqrt to Tosa Ref Backend

* Added ElementwiseUnary support with a mapping for Rsqrt
* Added unittests
* Added Rsqrt EndtoEnd tests for all backends
* Changed TosaRefLayerSupport to default to false on unsupported layers


Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: I3eaa9c684647ead61520a563815581aa68bee51b

1 files changed, 19 insertions, 0 deletions

diff --git a/src/backends/tosaCommon/operatorMappings/ElementwiseUnaryOperator.hpp b/src/backends/tosaCommon/operatorMappings/ElementwiseUnaryOperator.hpp
new file mode 100644
index 0000000000..d13428ca5a
--- /dev/null
+++ b/src/backends/tosaCommon/operatorMappings/ElementwiseUnaryOperator.hpp
@@ -0,0 +1,19 @@
+//
+// Copyright © 2023 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "TosaOperatorUtils.hpp"
+#include <Layer.hpp>
+
+#include <tosa_serialization_handler.h>
+
+using namespace armnn;
+using namespace tosa;
+
+TosaSerializationBasicBlock* ConvertElementwiseUnaryOperator(const Layer* layer,
+                                                             const std::vector<const TensorInfo*>& inputs,
+                                                             const std::vector<const TensorInfo*>& outputs,
+                                                             const ElementwiseUnaryDescriptor* unaryDescriptor);