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/*
* Copyright (c) 2020-2023 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/experimental/Types.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/ITensorPack.h"
#include "arm_compute/core/Window.h"
#include "arm_compute/function_info/ActivationLayerInfo.h"
#include "src/core/NEON/SVEMath.h"
#include "src/core/NEON/SVESymm.h"
#include <arm_sve.h>
#include <cmath>
#include <cstddef>
namespace arm_compute
{
namespace cpu
{
void sve2_qsymm16_activation(const ITensor *src,
ITensor *dst,
const ActivationLayerInfo &act_info,
const Window &window)
{
const auto window_start_x = static_cast<int>(window.x().start());
const auto window_end_x = static_cast<int>(window.x().end());
const ActivationLayerInfo::ActivationFunction act = act_info.activation();
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);
const UniformQuantizationInfo qi_in = src->info()->quantization_info().uniform();
const UniformQuantizationInfo qi_out = dst->info()->quantization_info().uniform();
const auto vconst_1 = svdup_n_f32(1.f);
const auto va_f32 = svdup_n_f32(act_info.a());
const auto vb_f32 = svdup_n_f32(act_info.b());
execute_window_loop(
win_collapsed,
[&](const Coordinates &)
{
const auto input_ptr = reinterpret_cast<const int16_t *>(input.ptr());
const auto output_ptr = reinterpret_cast<int16_t *>(output.ptr());
svint16_t tmp;
int x = window_start_x;
svbool_t pg = svwhilelt_b16(x, window_end_x);
do
{
const auto vin = svld1_s16(pg, input_ptr + x);
if (act == ActivationLayerInfo::ActivationFunction::LOGISTIC)
{
// De-quantize
auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
// Perform activation
const svfloat32x2_t tmp_dep = svcreate2_f32(
svdiv_f32_z(
pg, vconst_1,
svadd_f32_z(pg, vconst_1, svexp_f32_z(pg, svneg_f32_z(pg, svget2_f32(vin_deq, 0))))),
svdiv_f32_z(
pg, vconst_1,
svadd_f32_z(pg, vconst_1, svexp_f32_z(pg, svneg_f32_z(pg, svget2_f32(vin_deq, 1))))));
// Re-quantize to new output space
tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
}
else if (act == ActivationLayerInfo::ActivationFunction::TANH)
{
// De-quantize
auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
// Perform activation
const svfloat32x2_t tmp_dep = svcreate2_f32(
svmul_f32_z(pg, va_f32, svtanh_f32_z(pg, svmul_f32_z(pg, svget2_f32(vin_deq, 0), vb_f32))),
svmul_f32_z(pg, va_f32, svtanh_f32_z(pg, svmul_f32_z(pg, svget2_f32(vin_deq, 1), vb_f32))));
// Re-quantize to new output space
tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
}
else if (act == ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU)
{
// De-quantize
auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
// Perform activation
const svfloat32x2_t tmp_dep =
svcreate2_f32(svmin_f32_z(pg, va_f32, svmax_f32_z(pg, vb_f32, svget2_f32(vin_deq, 0))),
svmin_f32_z(pg, va_f32, svmax_f32_z(pg, vb_f32, svget2_f32(vin_deq, 1))));
// Re-quantize to new output space
tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
}
else
{
ARM_COMPUTE_ERROR("Unsupported activation function");
}
svst1_s16(pg, output_ptr + x, tmp);
x += svcnth();
pg = svwhilelt_b16(x, window_end_x);
} while (svptest_any(svptrue_b16(), pg));
},
input, output);
}
} // namespace cpu
} // namespace arm_compute
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