Add quantized support for unary elementwise in CPU

* Add quantized unary elementwise in CPU using LUT.
* Widen the input data range of the test suite.
  - Fix CPU exponential function overflow/underflow range.
  - Fix saturation issue of CL round operator.

Resolves: COMPMID-5763
Signed-off-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Change-Id: I41445de2b4a33ec6b01e0ab701516c240c852d0b
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9367
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/src/cpu/kernels/elementwise_unary/generic/neon/q8.cpp b/src/cpu/kernels/elementwise_unary/generic/neon/q8.cpp
new file mode 100644
index 0000000000..08bb7f28b6
--- /dev/null
+++ b/src/cpu/kernels/elementwise_unary/generic/neon/q8.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2023 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 "src/cpu/kernels/lut/list.h"
+
+namespace arm_compute
+{
+namespace cpu
+{
+
+#ifdef __aarch64__
+
+void neon_q8_elementwise_unary(const ITensor *in, ITensor *out, const Window &window, ElementWiseUnary op, const uint8_t *lut)
+{
+    ARM_COMPUTE_UNUSED(op);
+
+    auto win = window;
+    const auto window_end_x = window.x().end();
+    win.set(0, Window::Dimension(0, 1, 1));
+
+    Iterator src_it(in, win);
+    Iterator dst_it(out, win);
+
+    execute_window_loop(win, [&](const Coordinates &) {
+        const auto src_ptr = src_it.ptr();
+        auto dst_ptr = dst_it.ptr();
+
+        lut_u8_neon(lut, 1, window_end_x, &src_ptr, &dst_ptr);
+    },
+    src_it, dst_it);
+}
+
+#endif // __aarch64__
+
+} // namespace cpu
+} // namespace arm_compute