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, 6 insertions, 1 deletions

diff --git a/src/backends/tosaCommon/TosaMappings.cpp b/src/backends/tosaCommon/TosaMappings.cpp
index 0b5fa1a158..3932b62b7b 100644
--- a/src/backends/tosaCommon/TosaMappings.cpp
+++ b/src/backends/tosaCommon/TosaMappings.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// Copyright © 2022-2023 Arm Ltd and Contributors. All rights reserved.
 // SPDX-License-Identifier: MIT
 //
 
@@ -29,6 +29,11 @@ TosaSerializationBasicBlock* GetTosaMapping(const Layer* layer,
         {
             return ConvertElementwiseBinaryToTosaOperator(layer, type, inputs, outputs);
         }
+        case LayerType::ElementwiseUnary:
+        {
+            auto unaryDesc = PolymorphicDowncast<const ElementwiseUnaryDescriptor*>(&descriptor);
+            return ConvertElementwiseUnaryOperator(layer, inputs, outputs, unaryDesc);
+        }
         case LayerType::Concat:
         {
             auto concatDesc = PolymorphicDowncast<const OriginsDescriptor*>(&descriptor);