COMPMID-3238 add reference kernel for QSYMM16 Layer Normalization Kernel

Change-Id: I7384120ccf7567550dfbecadeb16e09e69b2c7b0
Signed-off-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2878
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

2 files changed, 104 insertions, 0 deletions

diff --git a/tests/validation/reference/LayerNormalizationLayer.cpp b/tests/validation/reference/LayerNormalizationLayer.cpp
new file mode 100644
index 0000000000..e597ccd997
--- /dev/null
+++ b/tests/validation/reference/LayerNormalizationLayer.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020 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.
+ */
+
+#include "LayerNormalizationLayer.h"
+#include "ArithmeticOperations.h"
+#include "MeanStdDevNormalizationLayer.h"
+#include "PixelWiseMultiplication.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+SimpleTensor<float> layer_normalization_layer_float(SimpleTensor<float> src, SimpleTensor<float> weight, SimpleTensor<float> bias)
+{
+    src = mean_std_normalization_layer(src);
+    src = pixel_wise_multiplication(src, weight, 1, ConvertPolicy::SATURATE, RoundingPolicy::TO_ZERO);
+    return arithmetic_operation(ArithmeticOperation::ADD, src, bias, DataType::F32, ConvertPolicy::SATURATE);
+}
+
+SimpleTensor<int16_t> layer_normalization_layer(const SimpleTensor<int16_t> &src, const SimpleTensor<int16_t> &weight, const SimpleTensor<int16_t> &bias)
+{
+    ARM_COMPUTE_ERROR_ON(src.shape().num_dimensions() > 2);
+
+    SimpleTensor<float> converted_src    = convert_from_symmetric(src);
+    SimpleTensor<float> converted_weight = convert_from_symmetric(weight);
+    SimpleTensor<float> converted_bias   = convert_from_symmetric(bias);
+
+    SimpleTensor<float> output = layer_normalization_layer_float(converted_src, converted_weight, converted_bias);
+
+    return convert_to_symmetric<int16_t>(output, src.quantization_info());
+}
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/reference/LayerNormalizationLayer.h b/tests/validation/reference/LayerNormalizationLayer.h
new file mode 100644
index 0000000000..5b1d08cc9c
--- /dev/null
+++ b/tests/validation/reference/LayerNormalizationLayer.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2020 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_TEST_LAYER_NORMALIZATION_LAYER_H
+#define ARM_COMPUTE_TEST_LAYER_NORMALIZATION_LAYER_H
+
+#include "tests/SimpleTensor.h"
+#include "tests/validation/Helpers.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+SimpleTensor<int16_t> layer_normalization_layer(const SimpleTensor<int16_t> &src, const SimpleTensor<int16_t> &weight, const SimpleTensor<int16_t> &bias);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+
+#endif /* ARM_COMPUTE_TEST_LAYER_NORMALIZATION_LAYER_H */