1 files changed, 57 insertions, 0 deletions
diff --git a/src/cpu/kernels/activation/generic/sve2/lut.cpp b/src/cpu/kernels/activation/generic/sve2/lut.cpp
new file mode 100644
index 0000000000..5db8595a75
--- /dev/null
+++ b/src/cpu/kernels/activation/generic/sve2/lut.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2022-2024 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 "arm_compute/core/Helpers.h"
+#include "arm_compute/function_info/ActivationLayerInfo.h"
+
+#include "src/cpu/kernels/lut/list.h"
+
+namespace arm_compute
+{
+namespace cpu
+{
+#ifdef __aarch64__
+void sve2_q8_activation_lut(const ITensor *src, ITensor *dst, const ActivationLayerInfo &act_info, const Window &window)
+{
+    ARM_COMPUTE_ERROR_ON( // LUT does not provide any performance benefit for ReLU as it's a single max() operation
+        (src->info()->data_type() != DataType::QASYMM8 && src->info()->data_type() != DataType::QASYMM8_SIGNED) ||
+        act_info.activation() == ActivationLayerInfo::ActivationFunction::RELU);
+    const auto window_end_x  = window.x().end();
+    Window     win_collapsed = window.collapse_if_possible(window, Window::DimZ);
+    win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1));
+    Iterator input(src, win_collapsed);
+    Iterator output(dst, win_collapsed);
+    execute_window_loop(
+        win_collapsed,
+        [&](const Coordinates &)
+        {
+            const auto input_ptr  = input.ptr();
+            auto       output_ptr = output.ptr();
+            lut_u8_sve2(act_info.lut().data(), 1u, window_end_x, &input_ptr, &output_ptr);
+        },
+        input, output);
+}
+#endif // __aarch64__
+} // namespace cpu
+} // namespace arm_compute