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" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 26 | #include "arm_compute/core/Window.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 27 | #include "src/core/NEON/wrapper/wrapper.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 28 | namespace arm_compute |
| 29 | { |
| 30 | namespace cpu |
| 31 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 32 | /** Constant parameters needed by the activation implementation. |
| 33 | * These parameters differ for each floating type |
| 34 | * |
| 35 | * @note This are passed as a struct as C++ does not allow float as a template parameter until C++20 |
| 36 | **/ |
| 37 | struct ActFpImplParams |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 38 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 39 | float delta; /**< Minimum delta needed to avoid NaN on corner-cases of elementary functions */ |
| 40 | int step_x; /**< Window step at the x dimension */ |
| 41 | }; |
| 42 | |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 43 | #ifndef __aarch64__ |
| 44 | inline float32x4_t mask_float_vector(const float32x4_t &in, const uint32x4_t &mask) |
| 45 | { |
| 46 | auto int_in = vreinterpretq_u32_f32(in); |
| 47 | return vreinterpretq_f32_u32(wrapper::vand(int_in, mask)); |
| 48 | } |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 49 | #if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
| 50 | inline float16x8_t mask_float_vector(const float16x8_t &in, const uint16x8_t &mask) |
| 51 | { |
| 52 | auto int_in = vreinterpretq_u16_f16(in); |
| 53 | return vreinterpretq_f16_u16(wrapper::vand(int_in, mask)); |
| 54 | } |
| 55 | #endif //defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 56 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 57 | |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 58 | template <typename T, const ActFpImplParams &P> |
| 59 | void fp_neon_activation_impl(const ITensor *src, ITensor *dst, const ActivationLayerInfo &act_info, const Window &window) |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 60 | { |
Michele Di Giorgio | 33f41fa | 2021-03-09 14:09:08 +0000 | [diff] [blame] | 61 | /** SIMD vector tag type. */ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 62 | using ExactTagType = typename arm_compute::wrapper::traits::neon_bitvector_tag_t<T, wrapper::traits::BitWidth::W128>; |
| 63 | constexpr int window_step_x = P.step_x; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 64 | const auto window_start_x = static_cast<int>(window.x().start()); |
| 65 | const auto window_end_x = static_cast<int>(window.x().end()); |
| 66 | const ActivationLayerInfo::ActivationFunction act = act_info.activation(); |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 67 | Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 68 | win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 69 | Iterator input(src, win_collapsed); |
| 70 | Iterator output(dst, win_collapsed); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 71 | // In case of non-aarch64, a small delta value is added to the input |
| 72 | // to prevent NAN values caused by zeros in inputs to SQRT. |
| 73 | // In case of aarh64, we call vsqrt directly, so we don't use delta. |
| 74 | #ifndef __aarch64__ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 75 | const auto delta = wrapper::vdup_n(static_cast<T>(P.delta), ExactTagType {}); |
Pablo Marquez Tello | ead4d11 | 2022-09-21 11:01:50 +0100 | [diff] [blame] | 76 | #else /* #ifndef __aarch64__ */ |
| 77 | const auto const_inv_2 = wrapper::vdup_n(static_cast<T>(0.5f), ExactTagType {}); |
| 78 | const auto const_inv_sqrt_2 = wrapper::vdup_n(static_cast<T>(0.70710678118f), ExactTagType{}); |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 79 | #endif /* __aarch64__ */ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 80 | const auto const_1 = wrapper::vdup_n(static_cast<T>(1.f), ExactTagType {}); |
| 81 | const auto const_0 = wrapper::vdup_n(static_cast<T>(0.f), ExactTagType{}); |
| 82 | const auto const_6 = wrapper::vdup_n(static_cast<T>(6.f), ExactTagType{}); |
| 83 | const auto const_3 = wrapper::vdup_n(static_cast<T>(3.f), ExactTagType{}); |
| 84 | const auto const_inv_6 = wrapper::vdup_n(static_cast<T>(0.166666667f), ExactTagType{}); |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 85 | constexpr float soft_relu_thresh = 12.f; |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 86 | const auto vsoft_relu_thresh = wrapper::vdup_n(static_cast<T>(soft_relu_thresh), ExactTagType{}); |
| 87 | const auto va = wrapper::vdup_n(static_cast<T>(act_info.a()), ExactTagType{}); |
| 88 | const auto vb = wrapper::vdup_n(static_cast<T>(act_info.b()), ExactTagType{}); |
| 89 | const auto a = static_cast<T>(act_info.a()); |
| 90 | const auto b = static_cast<T>(act_info.b()); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 91 | execute_window_loop(win_collapsed, [&](const Coordinates &) |
| 92 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 93 | const auto input_ptr = reinterpret_cast<const T *>(input.ptr()); |
| 94 | const auto output_ptr = reinterpret_cast<T *>(output.ptr()); |
| 95 | wrapper::traits::neon_bitvector_t<T, wrapper::traits::BitWidth::W128> tmp; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 96 | // Compute S elements per iteration |
| 97 | int x = window_start_x; |
| 98 | for(; x <= (window_end_x - window_step_x); x += window_step_x) |
| 99 | { |
| 100 | const auto vin = wrapper::vloadq(input_ptr + x); |
| 101 | switch(act) |
| 102 | { |
| 103 | case ActivationLayerInfo::ActivationFunction::ABS: |
| 104 | tmp = wrapper::vabs(vin); |
| 105 | break; |
| 106 | case ActivationLayerInfo::ActivationFunction::LINEAR: |
| 107 | tmp = wrapper::vmla(vb, va, vin); |
| 108 | break; |
| 109 | case ActivationLayerInfo::ActivationFunction::LOGISTIC: |
| 110 | tmp = wrapper::vinv(wrapper::vadd(const_1, wrapper::vexpq(wrapper::vneg(vin)))); |
| 111 | break; |
| 112 | case ActivationLayerInfo::ActivationFunction::RELU: |
| 113 | tmp = wrapper::vmax(const_0, vin); |
| 114 | break; |
| 115 | case ActivationLayerInfo::ActivationFunction::BOUNDED_RELU: |
| 116 | tmp = wrapper::vmin(va, wrapper::vmax(const_0, vin)); |
| 117 | break; |
| 118 | case ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU: |
| 119 | tmp = wrapper::vmin(va, wrapper::vmax(vb, vin)); |
| 120 | break; |
| 121 | case ActivationLayerInfo::ActivationFunction::LEAKY_RELU: |
| 122 | tmp = wrapper::vbsl(wrapper::vcgt(vin, const_0), vin, wrapper::vmul(va, vin)); |
| 123 | break; |
| 124 | case ActivationLayerInfo::ActivationFunction::SOFT_RELU: |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 125 | tmp = wrapper::vbsl(wrapper::vcgt(vin, vsoft_relu_thresh), vin, wrapper::vlog(wrapper::vadd(const_1, wrapper::vexpq(vin)))); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 126 | break; |
| 127 | case ActivationLayerInfo::ActivationFunction::ELU: |
| 128 | tmp = wrapper::vbsl(wrapper::vcge(vin, const_0), vin, wrapper::vmul(va, wrapper::vsub(wrapper::vexpq(vin), const_1))); |
| 129 | break; |
| 130 | case ActivationLayerInfo::ActivationFunction::SQRT: |
| 131 | #ifdef __aarch64__ |
| 132 | tmp = wrapper::vsqrt(vin); |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 133 | #else /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 134 | { |
| 135 | const auto bitmask = wrapper::vceq(vin, wrapper::vdup_n(0.f, ExactTagType{})); |
| 136 | tmp = wrapper::vinv(wrapper::vinvsqrt(wrapper::vadd(vin, mask_float_vector(delta, bitmask)))); |
| 137 | tmp = mask_float_vector(tmp, wrapper::vnot(bitmask)); |
| 138 | } |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 139 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 140 | break; |
| 141 | case ActivationLayerInfo::ActivationFunction::SQUARE: |
| 142 | tmp = wrapper::vmul(vin, vin); |
| 143 | break; |
| 144 | case ActivationLayerInfo::ActivationFunction::TANH: |
| 145 | tmp = wrapper::vmul(va, wrapper::vtanh(wrapper::vmul(vb, vin))); |
| 146 | break; |
| 147 | case ActivationLayerInfo::ActivationFunction::IDENTITY: |
| 148 | tmp = vin; |
| 149 | break; |
| 150 | case ActivationLayerInfo::ActivationFunction::HARD_SWISH: |
| 151 | tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_6, wrapper::vmin(const_6, wrapper::vmax(const_0, wrapper::vadd(vin, const_3))))); |
| 152 | break; |
Jonathan Deakin | d6b8a71 | 2022-08-23 11:44:18 +0100 | [diff] [blame] | 153 | case ActivationLayerInfo::ActivationFunction::SWISH: |
| 154 | tmp = wrapper::vmul(vin, wrapper::vinv(wrapper::vadd(const_1, wrapper::vexpq(wrapper::vneg(wrapper::vmul(va, vin)))))); |
| 155 | break; |
Pablo Marquez Tello | ead4d11 | 2022-09-21 11:01:50 +0100 | [diff] [blame] | 156 | #ifdef __aarch64__ |
Murray Kornelsen | 926f502 | 2022-07-13 21:22:39 -0400 | [diff] [blame] | 157 | case ActivationLayerInfo::ActivationFunction::GELU: |
| 158 | tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_2, wrapper::vadd(const_1, wrapper::verf(wrapper::vmul(vin, const_inv_sqrt_2))))); |
| 159 | break; |
Pablo Marquez Tello | ead4d11 | 2022-09-21 11:01:50 +0100 | [diff] [blame] | 160 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 161 | default: |
| 162 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 163 | } |
| 164 | wrapper::vstore(output_ptr + x, tmp); |
| 165 | } |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 166 | // Compute left-over elements |
| 167 | for(; x < window_end_x; ++x) |
| 168 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 169 | const T in = *(reinterpret_cast<const T *>(input_ptr + x)); |
| 170 | T tmp; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 171 | switch(act) |
| 172 | { |
| 173 | case ActivationLayerInfo::ActivationFunction::ABS: |
| 174 | tmp = std::abs(in); |
| 175 | break; |
| 176 | case ActivationLayerInfo::ActivationFunction::LINEAR: |
| 177 | tmp = a * in + b; |
| 178 | break; |
| 179 | case ActivationLayerInfo::ActivationFunction::LOGISTIC: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 180 | tmp = static_cast<T>(1) / (static_cast<T>(1) + std::exp(-in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 181 | break; |
| 182 | case ActivationLayerInfo::ActivationFunction::RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 183 | tmp = std::max<T>(static_cast<T>(0), in); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 184 | break; |
| 185 | case ActivationLayerInfo::ActivationFunction::BOUNDED_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 186 | tmp = std::min<T>(a, std::max(static_cast<T>(0), in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 187 | break; |
| 188 | case ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 189 | tmp = std::min<T>(a, std::max<T>(b, in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 190 | break; |
| 191 | case ActivationLayerInfo::ActivationFunction::LEAKY_RELU: |
| 192 | tmp = (in > 0) ? in : a * in; |
| 193 | break; |
| 194 | case ActivationLayerInfo::ActivationFunction::SOFT_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 195 | tmp = (in > soft_relu_thresh) ? in : std::log(static_cast<T>(1) + std::exp(in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 196 | break; |
| 197 | case ActivationLayerInfo::ActivationFunction::ELU: |
| 198 | tmp = (in >= 0) ? in : a * (std::exp(in) - 1); |
| 199 | break; |
| 200 | case ActivationLayerInfo::ActivationFunction::SQRT: |
| 201 | tmp = std::sqrt(in); |
| 202 | break; |
| 203 | case ActivationLayerInfo::ActivationFunction::SQUARE: |
| 204 | tmp = in * in; |
| 205 | break; |
| 206 | case ActivationLayerInfo::ActivationFunction::TANH: |
| 207 | tmp = a * std::tanh(b * in); |
| 208 | break; |
| 209 | case ActivationLayerInfo::ActivationFunction::IDENTITY: |
| 210 | tmp = in; |
| 211 | break; |
| 212 | case ActivationLayerInfo::ActivationFunction::HARD_SWISH: |
| 213 | tmp = in * ((std::min(std::max((in + 3), 0.0f), 6.0f)) * 0.166666667f); |
| 214 | break; |
Jonathan Deakin | d6b8a71 | 2022-08-23 11:44:18 +0100 | [diff] [blame] | 215 | case ActivationLayerInfo::ActivationFunction::SWISH: |
| 216 | tmp = in / (static_cast<T>(1) + std::exp(-a*in)); |
| 217 | break; |
Murray Kornelsen | 926f502 | 2022-07-13 21:22:39 -0400 | [diff] [blame] | 218 | case ActivationLayerInfo::ActivationFunction::GELU: |
| 219 | tmp = in * static_cast<T>(0.5f * (1.0f + erff(static_cast<float>(in) / 1.41421356237f))); |
| 220 | break; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 221 | default: |
| 222 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 223 | } |
| 224 | *(output_ptr + x) = tmp; |
| 225 | } |
| 226 | }, |
| 227 | input, output); |
| 228 | } |
| 229 | } // namespace cpu |
| 230 | } // namespace arm_compute |