IVGCVSW-8055 Add support for GELU activation function.

* Add support to CpuRef, CpuAcc and GpuAcc
* Add support to tflite parser, classic and opaque tflite delegates
* Add support to serializer and deserializer
* Add Unit tests

Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ibc60ef2ef2a051e6d9af6e15d24c46316ec19de4

2 files changed, 4 insertions, 1 deletions

diff --git a/src/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index ec4b48639d..131970e449 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -21,7 +21,8 @@ enum ActivationFunction : byte {
     Sqrt = 8,
     Square = 9,
     Elu = 10,
-    HardSwish = 11
+    HardSwish = 11,
+    Gelu = 12
 }
 
 enum ArgMinMaxFunction : byte {
diff --git a/src/armnnSerializer/Serializer.cpp b/src/armnnSerializer/Serializer.cpp
index 6cadb598a2..0df675d1db 100644
--- a/src/armnnSerializer/Serializer.cpp
+++ b/src/armnnSerializer/Serializer.cpp
@@ -78,6 +78,8 @@ serializer::ActivationFunction GetFlatBufferActivationFunction(armnn::Activation
             return serializer::ActivationFunction::ActivationFunction_Elu;
         case armnn::ActivationFunction::HardSwish:
             return serializer::ActivationFunction::ActivationFunction_HardSwish;
+        case armnn::ActivationFunction::Gelu:
+            return serializer::ActivationFunction::ActivationFunction_Gelu;
         default:
             return serializer::ActivationFunction::ActivationFunction_Sigmoid;
     }