Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 1 | /* |
Matthew Bentham | f1aeab9 | 2023-05-30 13:35:34 +0000 | [diff] [blame^] | 2 | * Copyright (c) 2020-2023 Arm Limited. |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
Matthew Bentham | f1aeab9 | 2023-05-30 13:35:34 +0000 | [diff] [blame^] | 24 | #include "arm_compute/core/ActivationLayerInfo.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 25 | #include "arm_compute/core/Helpers.h" |
| 26 | #include "arm_compute/core/ITensorPack.h" |
| 27 | #include "arm_compute/core/Window.h" |
| 28 | #include "arm_compute/core/experimental/Types.h" |
| 29 | #include "src/core/NEON/NEMath.h" |
| 30 | #include "src/core/NEON/NESymm.h" |
| 31 | #include "src/core/NEON/wrapper/wrapper.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 32 | |
| 33 | #include <arm_neon.h> |
| 34 | #include <cmath> |
| 35 | #include <cstddef> |
| 36 | |
| 37 | namespace arm_compute |
| 38 | { |
| 39 | namespace cpu |
| 40 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 41 | void neon_qsymm16_activation(const ITensor *src, ITensor *dst, const ActivationLayerInfo &act_info, const Window &window) |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 42 | { |
| 43 | constexpr int window_step_x = 8; |
| 44 | const auto window_start_x = static_cast<int>(window.x().start()); |
| 45 | const auto window_end_x = static_cast<int>(window.x().end()); |
| 46 | const ActivationLayerInfo::ActivationFunction act = act_info.activation(); |
| 47 | |
| 48 | Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); |
| 49 | win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); |
| 50 | |
| 51 | Iterator input(src, win_collapsed); |
| 52 | Iterator output(dst, win_collapsed); |
| 53 | |
| 54 | const UniformQuantizationInfo qi_in = src->info()->quantization_info().uniform(); |
| 55 | const UniformQuantizationInfo qi_out = dst->info()->quantization_info().uniform(); |
| 56 | const auto vconst_1 = vdupq_n_f32(1.f); |
| 57 | const float32x4_t va_f32 = vdupq_n_f32(act_info.a()); |
| 58 | const float32x4_t vb_f32 = vdupq_n_f32(act_info.b()); |
| 59 | const float a_f32 = act_info.a(); |
| 60 | const float b_f32 = act_info.b(); |
| 61 | |
| 62 | execute_window_loop(win_collapsed, [&](const Coordinates &) |
| 63 | { |
| 64 | const auto input_ptr = reinterpret_cast<const qsymm16_t *>(input.ptr()); |
| 65 | const auto output_ptr = reinterpret_cast<qsymm16_t *>(output.ptr()); |
| 66 | |
| 67 | wrapper::traits::neon_bitvector_t<qsymm16_t, wrapper::traits::BitWidth::W128> tmp; |
| 68 | ARM_COMPUTE_UNUSED(tmp); |
| 69 | |
| 70 | // Compute S elements per iteration |
| 71 | int x = window_start_x; |
| 72 | for(; x <= (window_end_x - window_step_x); x += window_step_x) |
| 73 | { |
| 74 | const auto vin = wrapper::vloadq(input_ptr + x); |
| 75 | if(act == ActivationLayerInfo::ActivationFunction::LOGISTIC) |
| 76 | { |
| 77 | // De-quantize |
| 78 | const auto vin_deq = vdequantize_int16(vin, qi_in.scale); |
| 79 | // Perform activation |
| 80 | const float32x4x2_t tmp_dep = |
| 81 | { |
| 82 | { |
| 83 | wrapper::vdiv(vconst_1, wrapper::vadd(vconst_1, wrapper::vexpq(wrapper::vneg(vin_deq.val[0])))), |
| 84 | wrapper::vdiv(vconst_1, wrapper::vadd(vconst_1, wrapper::vexpq(wrapper::vneg(vin_deq.val[1])))), |
| 85 | } |
| 86 | }; |
| 87 | // Re-quantize to new output space |
| 88 | tmp = vquantize_int16(tmp_dep, qi_out.scale); |
| 89 | } |
| 90 | else if(act == ActivationLayerInfo::ActivationFunction::TANH) |
| 91 | { |
| 92 | // De-quantize |
| 93 | const auto vin_deq = vdequantize_int16(vin, qi_in.scale); |
| 94 | // Perform activation |
| 95 | const float32x4x2_t tmp_dep = |
| 96 | { |
| 97 | { |
| 98 | wrapper::vmul(va_f32, wrapper::vtanh(wrapper::vmul(vin_deq.val[0], vb_f32))), |
| 99 | wrapper::vmul(va_f32, wrapper::vtanh(wrapper::vmul(vin_deq.val[1], vb_f32))), |
| 100 | } |
| 101 | }; |
| 102 | // Re-quantize to new output space |
| 103 | tmp = vquantize_int16(tmp_dep, qi_out.scale); |
| 104 | } |
Pablo Marquez Tello | f55cca5 | 2022-04-06 14:31:25 +0100 | [diff] [blame] | 105 | |
| 106 | else if(act == ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU) |
| 107 | { |
| 108 | // De-quantize |
| 109 | const auto vin_deq = vdequantize_int16(vin, qi_in.scale); |
| 110 | // Perform activation |
| 111 | const float32x4x2_t tmp_dep = |
| 112 | { |
| 113 | { |
| 114 | wrapper::vmin(va_f32, wrapper::vmax(vb_f32, vin_deq.val[0])), |
| 115 | wrapper::vmin(va_f32, wrapper::vmax(vb_f32, vin_deq.val[1])) |
| 116 | } |
| 117 | }; |
| 118 | // Re-quantize to new output space |
| 119 | tmp = vquantize_int16(tmp_dep, qi_out.scale); |
| 120 | } |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 121 | else |
| 122 | { |
| 123 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 124 | } |
| 125 | wrapper::vstore(output_ptr + x, tmp); |
| 126 | } |
| 127 | |
| 128 | // Compute left-over elements |
| 129 | for(; x < window_end_x; ++x) |
| 130 | { |
| 131 | qsymm16_t in = *(reinterpret_cast<const qsymm16_t *>(input_ptr + x)); |
| 132 | qsymm16_t tmp = 0; |
| 133 | if(act == ActivationLayerInfo::ActivationFunction::LOGISTIC) |
| 134 | { |
| 135 | float tmp_f = dequantize_qsymm16(in, qi_in.scale); |
| 136 | tmp_f = 1.f / (1.f + std::exp(-tmp_f)); |
| 137 | tmp = quantize_qsymm16(tmp_f, qi_out); |
| 138 | } |
| 139 | else if(act == ActivationLayerInfo::ActivationFunction::TANH) |
| 140 | { |
| 141 | float tmp_f = dequantize_qsymm16(in, qi_in.scale); |
| 142 | tmp_f = a_f32 * std::tanh(b_f32 * tmp_f); |
| 143 | tmp = quantize_qsymm16(tmp_f, qi_out); |
| 144 | } |
Pablo Marquez Tello | f55cca5 | 2022-04-06 14:31:25 +0100 | [diff] [blame] | 145 | else if(act == ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU) |
| 146 | { |
| 147 | float tmp_f = dequantize_qsymm16(in, qi_in.scale); |
| 148 | tmp_f = std::min<float>(a_f32, std::max<float>(b_f32, tmp_f)); |
| 149 | tmp = quantize_qsymm16(tmp_f, qi_out); |
| 150 | } |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 151 | else |
| 152 | { |
| 153 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 154 | } |
| 155 | *(output_ptr + x) = tmp; |
| 156 | } |
| 157 | }, |
| 158 | input, output); |
| 159 | } |
| 160 | } // namespace cpu |
| 161 | } // namespace arm_compute |