From dc7628e8889aa3b8272d2e156ee5d97e6eeb0625 Mon Sep 17 00:00:00 2001
From: Chunseok Lee <chunseok.lee@samsung.com>
Date: Tue, 20 Aug 2024 13:37:26 +0900
Subject: [PATCH] [onert-micro] S8 Test for Less

- S8 test for Less added
- Fix wrong accumulator type

DCO-1.0-Signed-off-by: Chunseok Lee <chunseok.lee@samsung.com>
---
 .../execute/kernels/ComparisonCommon.h        |   4 +-
 .../include/pal/common/PALComparisons.h       |   8 +-
 .../include/test_models/less/S8LessKernel.h   | 192 ++++++++++++++++++
 .../onert-micro/src/execute/kernels/Less.cpp  |   7 +-
 .../src/execute/kernels/tests/Less.test.cpp   |  21 ++
 5 files changed, 225 insertions(+), 7 deletions(-)
 create mode 100644 onert-micro/onert-micro/include/test_models/less/S8LessKernel.h

diff --git a/onert-micro/onert-micro/include/execute/kernels/ComparisonCommon.h b/onert-micro/onert-micro/include/execute/kernels/ComparisonCommon.h
index 5aea894d47f..fc08257f156 100644
--- a/onert-micro/onert-micro/include/execute/kernels/ComparisonCommon.h
+++ b/onert-micro/onert-micro/include/execute/kernels/ComparisonCommon.h
@@ -110,8 +110,8 @@ template <typename T> void evalComparisonGeneric(OMRuntimeKernel *runtime_kernel
   }
 }
 
-template <typename T>
-void evalQuantizedComparisonGeneric(OMRuntimeKernel *runtime_kernel, bool F(T, T))
+template <typename T, typename AccType>
+void evalQuantizedComparisonGeneric(OMRuntimeKernel *runtime_kernel, bool F(AccType, AccType))
 {
   const circle::Tensor *input1 = nullptr;
   const circle::Tensor *input2 = nullptr;
diff --git a/onert-micro/onert-micro/include/pal/common/PALComparisons.h b/onert-micro/onert-micro/include/pal/common/PALComparisons.h
index 0f37d2f19c8..0770196ff32 100644
--- a/onert-micro/onert-micro/include/pal/common/PALComparisons.h
+++ b/onert-micro/onert-micro/include/pal/common/PALComparisons.h
@@ -71,11 +71,11 @@ inline void ComparisonNoScaling(const int64_t flat_size, const T *input1_data, c
   }
 }
 
-template <typename T>
+template <typename T, typename AccType>
 inline void BroadcastComparison4DSlowWithScaling(
   const core::ComparisonParams &op_params, const core::OMRuntimeShape &unextended_input1_shape,
   const T *input1_data, const core::OMRuntimeShape &unextended_input2_shape, const T *input2_data,
-  const core::OMRuntimeShape &unextended_output_shape, bool *output_data, bool F(T, T))
+  const core::OMRuntimeShape &unextended_output_shape, bool *output_data, bool F(AccType, AccType))
 {
   const BroadcastComparison4DSlowCommon dims = BroadcastComparison4DSlowPreprocess(
     unextended_input1_shape, unextended_input2_shape, unextended_output_shape);
@@ -118,10 +118,10 @@ inline void BroadcastComparison4DSlowWithScaling(
   }
 }
 
-template <typename T>
+template <typename T, typename AccType>
 inline void ComparisonWithScaling(const core::ComparisonParams &op_params, const int64_t flat_size,
                                   const T *input1_data, const T *input2_data, bool *output_data,
-                                  bool F(T, T))
+                                  bool F(AccType, AccType))
 {
   int left_shift = op_params.left_shift;
   int32_t input1_offset = op_params.input1_offset;
diff --git a/onert-micro/onert-micro/include/test_models/less/S8LessKernel.h b/onert-micro/onert-micro/include/test_models/less/S8LessKernel.h
new file mode 100644
index 00000000000..f2762487cd9
--- /dev/null
+++ b/onert-micro/onert-micro/include/test_models/less/S8LessKernel.h
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ONERT_MICRO_TEST_MODELS_LESS_KERNEL_S8_H
+#define ONERT_MICRO_TEST_MODELS_LESS_KERNEL_S8_H
+
+#include "TestDataLessBase.h"
+
+namespace onert_micro
+{
+namespace test_model
+{
+namespace less_s8_with_no_broadcasting
+{
+
+/*
+ * Less Kernel:
+ *
+ * Input_1(1, 1, 4, 3)   Input_2(1, 1, 4, 3)
+ * scale: 0.0078431373   scale: 0.008431373
+ *       \             /
+ *     Less(no broadcast)
+ *              |
+ *          Output(1, 1, 4, 3)
+ */
+
+const unsigned char test_kernel_model_circle[] = {
+
+  0x1c, 0x00, 0x00, 0x00, 0x43, 0x49, 0x52, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e,
+  0x00, 0x14, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x10, 0x00, 0x04, 0x00, 0x0e, 0x00,
+  0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x10, 0x02, 0x00, 0x00, 0x2c,
+  0x02, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x88, 0xff, 0xff, 0xff, 0x8c, 0xff, 0xff,
+  0xff, 0x90, 0xff, 0xff, 0xff, 0x94, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x14, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x18, 0x00, 0x14, 0x00, 0x10, 0x00, 0x0c, 0x00, 0x08,
+  0x00, 0x04, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00,
+  0x60, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0x6c, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00,
+  0x00, 0x6d, 0x61, 0x69, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x14, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x14, 0x00, 0x00, 0x00, 0x10, 0x00, 0x0c, 0x00, 0x07,
+  0x00, 0x08, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x29, 0x10, 0x00, 0x00, 0x00,
+  0x10, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00, 0x04, 0x00, 0x00,
+  0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0xcc, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x14,
+  0x00, 0x10, 0x00, 0x0f, 0x00, 0x08, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x10, 0x00,
+  0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x0c, 0x00, 0x00, 0x00, 0x03,
+  0x00, 0x00, 0x00, 0x6f, 0x66, 0x6d, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x8a, 0xff, 0xff,
+  0xff, 0x14, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x09, 0x4c, 0x00, 0x00, 0x00, 0x7c, 0xff, 0xff, 0xff, 0x30, 0x00, 0x00, 0x00, 0x24,
+  0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
+  0x00, 0xbe, 0x23, 0x0a, 0x3c, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x42, 0x01, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xc3, 0x04, 0x00, 0x00, 0x00, 0x69, 0x66, 0x6d, 0x32, 0x00,
+  0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x18, 0x00, 0x14,
+  0x00, 0x13, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x04, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x20, 0x00,
+  0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x54,
+  0x00, 0x00, 0x00, 0x0c, 0x00, 0x14, 0x00, 0x04, 0x00, 0x08, 0x00, 0x0c, 0x00, 0x10, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00,
+  0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x81, 0x80, 0x00, 0x3c, 0x01, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0xfe, 0x42, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc3, 0x04, 0x00, 0x00, 0x00,
+  0x69, 0x66, 0x6d, 0x31, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
+  0x00, 0x01, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00,
+  0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x0c, 0x00, 0x0b, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a,
+  0x11, 0x00, 0x00, 0x00, 0x4f, 0x4e, 0x45, 0x2d, 0x74, 0x66, 0x6c, 0x69, 0x74, 0x65, 0x32,
+  0x63, 0x69, 0x72, 0x63, 0x6c, 0x65, 0x00, 0x00, 0x00
+
+};
+const std::vector<int8_t> input1_data = {36, 4, 49, 84, 22, 40, 74, 97, 25, 26, 69, 37};
+
+const std::vector<int8_t> input2_data = {66, 62, 58, 89, 2, 29, 37, 88, 64, 83, 73, 33};
+
+const std::vector<bool> reference_output_data = {true,  true,  true, true, false, false,
+                                                 false, false, true, true, true,  false};
+
+} // namespace less_s8_with_no_broadcasting
+
+namespace neg_less_s8_with_no_broadcasting
+{
+
+/*
+ * Less Kernel with input type mismatch:
+ *
+ * Input_1(1, 2, 2, 3) INT8   Input_2(1, 2, 2, 3) UINT8
+ *       \             /
+ *     Less(no broadcast)
+ *              |
+ *          Output(1, 2, 2, 3)
+ */
+
+const unsigned char test_kernel_model_circle[] = {
+  0x1c, 0x00, 0x00, 0x00, 0x43, 0x49, 0x52, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00,
+  0x14, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x10, 0x00, 0x04, 0x00, 0x0e, 0x00, 0x00, 0x00,
+  0x10, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x10, 0x02, 0x00, 0x00, 0x2c, 0x02, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x88, 0xff, 0xff, 0xff, 0x8c, 0xff, 0xff, 0xff, 0x90, 0xff, 0xff, 0xff,
+  0x94, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00,
+  0x18, 0x00, 0x14, 0x00, 0x10, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x04, 0x00, 0x0e, 0x00, 0x00, 0x00,
+  0x14, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00,
+  0x6c, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x6d, 0x61, 0x69, 0x6e, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x14, 0x00, 0x00, 0x00,
+  0x10, 0x00, 0x0c, 0x00, 0x07, 0x00, 0x08, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x29,
+  0x10, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0xcc, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x14, 0x00,
+  0x10, 0x00, 0x0f, 0x00, 0x08, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
+  0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x0c, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0x6f, 0x66, 0x6d, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x8a, 0xff, 0xff, 0xff, 0x14, 0x00, 0x00, 0x00,
+  0x4c, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x4c, 0x00, 0x00, 0x00,
+  0x7c, 0xff, 0xff, 0xff, 0x30, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xbe, 0x23, 0x0a, 0x3c, 0x01, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x80, 0x43, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x69, 0x66, 0x6d, 0x32, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00,
+  0x18, 0x00, 0x14, 0x00, 0x13, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x04, 0x00, 0x0e, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09,
+  0x54, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x14, 0x00, 0x04, 0x00, 0x08, 0x00, 0x0c, 0x00, 0x10, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x81, 0x80, 0x00, 0x3c, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x42,
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc3, 0x04, 0x00, 0x00, 0x00, 0x69, 0x66, 0x6d, 0x31,
+  0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
+  0x0c, 0x00, 0x0c, 0x00, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00,
+  0x3a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x11, 0x00, 0x00, 0x00, 0x4f, 0x4e, 0x45, 0x2d,
+  0x74, 0x66, 0x6c, 0x69, 0x74, 0x65, 0x32, 0x63, 0x69, 0x72, 0x63, 0x6c, 0x65, 0x00, 0x00, 0x00};
+const std::vector<int8_t> input1_data = {36, 4, 49, 84, 22, 40, 74, 97, 25, 26, 69, 37};
+
+const std::vector<int8_t> input2_data = {66, 62, 58, 89, 2, 29, 37, 88, 64, 83, 73, 33};
+
+const std::vector<bool> reference_output_data = {true,  true,  true, true, false, false,
+                                                 false, false, true, true, true,  false};
+
+} // namespace neg_less_s8_with_no_broadcasting
+
+class TestDataS8Less : public TestDataLessBase<int8_t, bool>
+{
+public:
+  explicit TestDataS8Less(bool is_with_broadcast, bool is_neg)
+    : TestDataLessBase<int8_t, bool>(is_with_broadcast)
+  {
+    if (is_with_broadcast)
+    {
+      assert(false && "Not impl yet");
+    }
+    else
+    {
+      if (is_neg)
+      {
+        _input1_data = neg_less_s8_with_no_broadcasting::input1_data;
+        _input2_data = neg_less_s8_with_no_broadcasting::input2_data;
+        _reference_output_data = neg_less_s8_with_no_broadcasting::reference_output_data;
+        _test_kernel_model_circle = neg_less_s8_with_no_broadcasting::test_kernel_model_circle;
+      }
+      else
+      {
+        _input1_data = less_s8_with_no_broadcasting::input1_data;
+        _input2_data = less_s8_with_no_broadcasting::input2_data;
+        _reference_output_data = less_s8_with_no_broadcasting::reference_output_data;
+        _test_kernel_model_circle = less_s8_with_no_broadcasting::test_kernel_model_circle;
+      }
+    }
+  }
+
+  ~TestDataS8Less() override = default;
+};
+
+} // namespace test_model
+} // namespace onert_micro
+
+#endif // ONERT_MICRO_TEST_MODELS_LESS_KERNEL_QUANT_H
diff --git a/onert-micro/onert-micro/src/execute/kernels/Less.cpp b/onert-micro/onert-micro/src/execute/kernels/Less.cpp
index 6d27f66abd3..b815849cf6f 100644
--- a/onert-micro/onert-micro/src/execute/kernels/Less.cpp
+++ b/onert-micro/onert-micro/src/execute/kernels/Less.cpp
@@ -73,7 +73,12 @@ OMStatus onert_micro::execute::execute_kernel_CircleLess(const OMExecuteArgs &ex
       break;
 #ifndef DIS_QUANT
     case circle::TensorType_UINT8:
-      evalQuantizedComparisonGeneric<uint8_t>(&runtime_kernel, onert_micro::execute::pal::LessFn);
+      evalQuantizedComparisonGeneric<uint8_t, int32_t>(&runtime_kernel,
+                                                       onert_micro::execute::pal::LessFn);
+      break;
+    case circle::TensorType_INT8:
+      evalQuantizedComparisonGeneric<int8_t, int32_t>(&runtime_kernel,
+                                                      onert_micro::execute::pal::LessFn);
       break;
 #endif // DIS_QUANT
 
diff --git a/onert-micro/onert-micro/src/execute/kernels/tests/Less.test.cpp b/onert-micro/onert-micro/src/execute/kernels/tests/Less.test.cpp
index f7b8b8f08bb..61aa5419c8d 100644
--- a/onert-micro/onert-micro/src/execute/kernels/tests/Less.test.cpp
+++ b/onert-micro/onert-micro/src/execute/kernels/tests/Less.test.cpp
@@ -19,6 +19,7 @@
 #include "test_models/less/FloatLessKernel.h"
 #include "test_models/less/IntLessKernel.h"
 #include "test_models/less/QuantLessKernel.h"
+#include "test_models/less/S8LessKernel.h"
 #include "test_models/less/NegTestDataLessKernel.h"
 
 namespace onert_micro
@@ -124,6 +125,26 @@ TEST_F(LessTest, Quant_P)
   EXPECT_THAT(output_data_vector, test_data_kernel.get_output_data_by_index(0));
 }
 
+TEST_F(LessTest, S8_P)
+{
+  const bool is_with_broadcast = false;
+  onert_micro::test_model::TestDataS8Less test_data_kernel(is_with_broadcast, false);
+
+  std::vector<bool> output_data_vector =
+    onert_micro::execute::testing::checkKernel<int8_t, bool>(2, &test_data_kernel);
+
+  EXPECT_THAT(output_data_vector, test_data_kernel.get_output_data_by_index(0));
+}
+
+TEST_F(LessTest, S8_NEG)
+{
+  const bool is_with_broadcast = false;
+  onert_micro::test_model::TestDataS8Less test_data_kernel(is_with_broadcast, true);
+
+  EXPECT_DEATH((onert_micro::execute::testing::checkKernel<int8_t, bool>(2, &test_data_kernel)),
+               "");
+}
+
 TEST_F(LessTest, Quant_NEG)
 {
   const bool is_with_broadcast = false;