COMPMID-2753: Add support for QASYMM8_SIGNED in CL kernels/functions

Change-Id: I7ed2d43f33458ba0571323f6fa9dc2e45fcd672a
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2516
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/tests/validation/reference/ROIAlignLayer.cpp b/tests/validation/reference/ROIAlignLayer.cpp
index c32dce7..8b2cd21 100644
--- a/tests/validation/reference/ROIAlignLayer.cpp
+++ b/tests/validation/reference/ROIAlignLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 ARM Limited.
+ * Copyright (c) 2018-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -214,6 +214,15 @@
     SimpleTensor<uint8_t> dst      = convert_to_asymmetric<uint8_t>(dst_tmp, output_qinfo);
     return dst;
 }
+template <>
+SimpleTensor<int8_t> roi_align_layer(const SimpleTensor<int8_t> &src, const SimpleTensor<uint16_t> &rois, const ROIPoolingLayerInfo &pool_info, const QuantizationInfo &output_qinfo)
+{
+    SimpleTensor<float>  src_tmp  = convert_from_asymmetric(src);
+    SimpleTensor<float>  rois_tmp = convert_rois_from_asymmetric(rois);
+    SimpleTensor<float>  dst_tmp  = roi_align_layer<float, float>(src_tmp, rois_tmp, pool_info, output_qinfo);
+    SimpleTensor<int8_t> dst      = convert_to_asymmetric<int8_t>(dst_tmp, output_qinfo);
+    return dst;
+}
 } // namespace reference
 } // namespace validation
 } // namespace test