Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 1 | /* |
Murray Kornelsen | 926f502 | 2022-07-13 21:22:39 -0400 | [diff] [blame] | 2 | * Copyright (c) 2020-2022 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 | */ |
| 24 | #include "arm_compute/core/Helpers.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 25 | #include "arm_compute/core/Window.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 26 | #include "src/core/NEON/wrapper/wrapper.h" |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 27 | namespace arm_compute |
| 28 | { |
| 29 | namespace cpu |
| 30 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 31 | /** Constant parameters needed by the activation implementation. |
| 32 | * These parameters differ for each floating type |
| 33 | * |
| 34 | * @note This are passed as a struct as C++ does not allow float as a template parameter until C++20 |
| 35 | **/ |
| 36 | struct ActFpImplParams |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 37 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 38 | float delta; /**< Minimum delta needed to avoid NaN on corner-cases of elementary functions */ |
| 39 | int step_x; /**< Window step at the x dimension */ |
| 40 | }; |
| 41 | |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 42 | #ifndef __aarch64__ |
| 43 | inline float32x4_t mask_float_vector(const float32x4_t &in, const uint32x4_t &mask) |
| 44 | { |
| 45 | auto int_in = vreinterpretq_u32_f32(in); |
| 46 | return vreinterpretq_f32_u32(wrapper::vand(int_in, mask)); |
| 47 | } |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 48 | #if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
| 49 | inline float16x8_t mask_float_vector(const float16x8_t &in, const uint16x8_t &mask) |
| 50 | { |
| 51 | auto int_in = vreinterpretq_u16_f16(in); |
| 52 | return vreinterpretq_f16_u16(wrapper::vand(int_in, mask)); |
| 53 | } |
| 54 | #endif //defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 55 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 56 | |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 57 | template <typename T, const ActFpImplParams &P> |
| 58 | 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] | 59 | { |
Michele Di Giorgio | 33f41fa | 2021-03-09 14:09:08 +0000 | [diff] [blame] | 60 | /** SIMD vector tag type. */ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 61 | using ExactTagType = typename arm_compute::wrapper::traits::neon_bitvector_tag_t<T, wrapper::traits::BitWidth::W128>; |
| 62 | constexpr int window_step_x = P.step_x; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 63 | const auto window_start_x = static_cast<int>(window.x().start()); |
| 64 | const auto window_end_x = static_cast<int>(window.x().end()); |
| 65 | const ActivationLayerInfo::ActivationFunction act = act_info.activation(); |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 66 | Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 67 | win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 68 | Iterator input(src, win_collapsed); |
| 69 | Iterator output(dst, win_collapsed); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 70 | // In case of non-aarch64, a small delta value is added to the input |
| 71 | // to prevent NAN values caused by zeros in inputs to SQRT. |
| 72 | // In case of aarh64, we call vsqrt directly, so we don't use delta. |
| 73 | #ifndef __aarch64__ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 74 | 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] | 75 | #else /* #ifndef __aarch64__ */ |
| 76 | const auto const_inv_2 = wrapper::vdup_n(static_cast<T>(0.5f), ExactTagType {}); |
| 77 | 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] | 78 | #endif /* __aarch64__ */ |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 79 | const auto const_1 = wrapper::vdup_n(static_cast<T>(1.f), ExactTagType {}); |
| 80 | const auto const_0 = wrapper::vdup_n(static_cast<T>(0.f), ExactTagType{}); |
| 81 | const auto const_6 = wrapper::vdup_n(static_cast<T>(6.f), ExactTagType{}); |
| 82 | const auto const_3 = wrapper::vdup_n(static_cast<T>(3.f), ExactTagType{}); |
| 83 | 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] | 84 | constexpr float soft_relu_thresh = 12.f; |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 85 | const auto vsoft_relu_thresh = wrapper::vdup_n(static_cast<T>(soft_relu_thresh), ExactTagType{}); |
| 86 | const auto va = wrapper::vdup_n(static_cast<T>(act_info.a()), ExactTagType{}); |
| 87 | const auto vb = wrapper::vdup_n(static_cast<T>(act_info.b()), ExactTagType{}); |
| 88 | const auto a = static_cast<T>(act_info.a()); |
| 89 | const auto b = static_cast<T>(act_info.b()); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 90 | execute_window_loop(win_collapsed, [&](const Coordinates &) |
| 91 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 92 | const auto input_ptr = reinterpret_cast<const T *>(input.ptr()); |
| 93 | const auto output_ptr = reinterpret_cast<T *>(output.ptr()); |
| 94 | wrapper::traits::neon_bitvector_t<T, wrapper::traits::BitWidth::W128> tmp; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 95 | // Compute S elements per iteration |
| 96 | int x = window_start_x; |
| 97 | for(; x <= (window_end_x - window_step_x); x += window_step_x) |
| 98 | { |
| 99 | const auto vin = wrapper::vloadq(input_ptr + x); |
| 100 | switch(act) |
| 101 | { |
| 102 | case ActivationLayerInfo::ActivationFunction::ABS: |
| 103 | tmp = wrapper::vabs(vin); |
| 104 | break; |
| 105 | case ActivationLayerInfo::ActivationFunction::LINEAR: |
| 106 | tmp = wrapper::vmla(vb, va, vin); |
| 107 | break; |
| 108 | case ActivationLayerInfo::ActivationFunction::LOGISTIC: |
| 109 | tmp = wrapper::vinv(wrapper::vadd(const_1, wrapper::vexpq(wrapper::vneg(vin)))); |
| 110 | break; |
| 111 | case ActivationLayerInfo::ActivationFunction::RELU: |
| 112 | tmp = wrapper::vmax(const_0, vin); |
| 113 | break; |
| 114 | case ActivationLayerInfo::ActivationFunction::BOUNDED_RELU: |
| 115 | tmp = wrapper::vmin(va, wrapper::vmax(const_0, vin)); |
| 116 | break; |
| 117 | case ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU: |
| 118 | tmp = wrapper::vmin(va, wrapper::vmax(vb, vin)); |
| 119 | break; |
| 120 | case ActivationLayerInfo::ActivationFunction::LEAKY_RELU: |
| 121 | tmp = wrapper::vbsl(wrapper::vcgt(vin, const_0), vin, wrapper::vmul(va, vin)); |
| 122 | break; |
| 123 | case ActivationLayerInfo::ActivationFunction::SOFT_RELU: |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 124 | 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] | 125 | break; |
| 126 | case ActivationLayerInfo::ActivationFunction::ELU: |
| 127 | tmp = wrapper::vbsl(wrapper::vcge(vin, const_0), vin, wrapper::vmul(va, wrapper::vsub(wrapper::vexpq(vin), const_1))); |
| 128 | break; |
| 129 | case ActivationLayerInfo::ActivationFunction::SQRT: |
| 130 | #ifdef __aarch64__ |
| 131 | tmp = wrapper::vsqrt(vin); |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 132 | #else /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 133 | { |
| 134 | const auto bitmask = wrapper::vceq(vin, wrapper::vdup_n(0.f, ExactTagType{})); |
| 135 | tmp = wrapper::vinv(wrapper::vinvsqrt(wrapper::vadd(vin, mask_float_vector(delta, bitmask)))); |
| 136 | tmp = mask_float_vector(tmp, wrapper::vnot(bitmask)); |
| 137 | } |
Michele Di Giorgio | 6c25aad | 2021-01-14 16:17:48 +0000 | [diff] [blame] | 138 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 139 | break; |
| 140 | case ActivationLayerInfo::ActivationFunction::SQUARE: |
| 141 | tmp = wrapper::vmul(vin, vin); |
| 142 | break; |
| 143 | case ActivationLayerInfo::ActivationFunction::TANH: |
| 144 | tmp = wrapper::vmul(va, wrapper::vtanh(wrapper::vmul(vb, vin))); |
| 145 | break; |
| 146 | case ActivationLayerInfo::ActivationFunction::IDENTITY: |
| 147 | tmp = vin; |
| 148 | break; |
| 149 | case ActivationLayerInfo::ActivationFunction::HARD_SWISH: |
| 150 | tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_6, wrapper::vmin(const_6, wrapper::vmax(const_0, wrapper::vadd(vin, const_3))))); |
| 151 | break; |
Jonathan Deakin | d6b8a71 | 2022-08-23 11:44:18 +0100 | [diff] [blame^] | 152 | case ActivationLayerInfo::ActivationFunction::SWISH: |
| 153 | tmp = wrapper::vmul(vin, wrapper::vinv(wrapper::vadd(const_1, wrapper::vexpq(wrapper::vneg(wrapper::vmul(va, vin)))))); |
| 154 | break; |
Pablo Marquez Tello | ead4d11 | 2022-09-21 11:01:50 +0100 | [diff] [blame] | 155 | #ifdef __aarch64__ |
Murray Kornelsen | 926f502 | 2022-07-13 21:22:39 -0400 | [diff] [blame] | 156 | case ActivationLayerInfo::ActivationFunction::GELU: |
| 157 | tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_2, wrapper::vadd(const_1, wrapper::verf(wrapper::vmul(vin, const_inv_sqrt_2))))); |
| 158 | break; |
Pablo Marquez Tello | ead4d11 | 2022-09-21 11:01:50 +0100 | [diff] [blame] | 159 | #endif /* __aarch64__ */ |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 160 | default: |
| 161 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 162 | } |
| 163 | wrapper::vstore(output_ptr + x, tmp); |
| 164 | } |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 165 | // Compute left-over elements |
| 166 | for(; x < window_end_x; ++x) |
| 167 | { |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 168 | const T in = *(reinterpret_cast<const T *>(input_ptr + x)); |
| 169 | T tmp; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 170 | switch(act) |
| 171 | { |
| 172 | case ActivationLayerInfo::ActivationFunction::ABS: |
| 173 | tmp = std::abs(in); |
| 174 | break; |
| 175 | case ActivationLayerInfo::ActivationFunction::LINEAR: |
| 176 | tmp = a * in + b; |
| 177 | break; |
| 178 | case ActivationLayerInfo::ActivationFunction::LOGISTIC: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 179 | tmp = static_cast<T>(1) / (static_cast<T>(1) + std::exp(-in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 180 | break; |
| 181 | case ActivationLayerInfo::ActivationFunction::RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 182 | tmp = std::max<T>(static_cast<T>(0), in); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 183 | break; |
| 184 | case ActivationLayerInfo::ActivationFunction::BOUNDED_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 185 | tmp = std::min<T>(a, std::max(static_cast<T>(0), in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 186 | break; |
| 187 | case ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 188 | tmp = std::min<T>(a, std::max<T>(b, in)); |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 189 | break; |
| 190 | case ActivationLayerInfo::ActivationFunction::LEAKY_RELU: |
| 191 | tmp = (in > 0) ? in : a * in; |
| 192 | break; |
| 193 | case ActivationLayerInfo::ActivationFunction::SOFT_RELU: |
Dana Zlotnik | 3229171 | 2021-11-25 09:58:27 +0200 | [diff] [blame] | 194 | 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] | 195 | break; |
| 196 | case ActivationLayerInfo::ActivationFunction::ELU: |
| 197 | tmp = (in >= 0) ? in : a * (std::exp(in) - 1); |
| 198 | break; |
| 199 | case ActivationLayerInfo::ActivationFunction::SQRT: |
| 200 | tmp = std::sqrt(in); |
| 201 | break; |
| 202 | case ActivationLayerInfo::ActivationFunction::SQUARE: |
| 203 | tmp = in * in; |
| 204 | break; |
| 205 | case ActivationLayerInfo::ActivationFunction::TANH: |
| 206 | tmp = a * std::tanh(b * in); |
| 207 | break; |
| 208 | case ActivationLayerInfo::ActivationFunction::IDENTITY: |
| 209 | tmp = in; |
| 210 | break; |
| 211 | case ActivationLayerInfo::ActivationFunction::HARD_SWISH: |
| 212 | tmp = in * ((std::min(std::max((in + 3), 0.0f), 6.0f)) * 0.166666667f); |
| 213 | break; |
Jonathan Deakin | d6b8a71 | 2022-08-23 11:44:18 +0100 | [diff] [blame^] | 214 | case ActivationLayerInfo::ActivationFunction::SWISH: |
| 215 | tmp = in / (static_cast<T>(1) + std::exp(-a*in)); |
| 216 | break; |
Murray Kornelsen | 926f502 | 2022-07-13 21:22:39 -0400 | [diff] [blame] | 217 | case ActivationLayerInfo::ActivationFunction::GELU: |
| 218 | tmp = in * static_cast<T>(0.5f * (1.0f + erff(static_cast<float>(in) / 1.41421356237f))); |
| 219 | break; |
Michalis Spyrou | c4d4555 | 2020-10-19 12:41:30 +0100 | [diff] [blame] | 220 | default: |
| 221 | ARM_COMPUTE_ERROR("Unsupported activation function"); |
| 222 | } |
| 223 | *(output_ptr + x) = tmp; |
| 224 | } |
| 225 | }, |
| 226 | input, output); |
| 227 | } |
| 228 | } // namespace cpu |
| 229 | } // namespace arm_compute |