Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 1 | /* |
Pablo Marquez Tello | 7ce8a83 | 2023-08-31 16:00:50 +0100 | [diff] [blame] | 2 | * Copyright (c) 2021-2023 Arm Limited. |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [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 "src/cpu/kernels/softmax/generic/neon/impl.h" |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 25 | |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 26 | #include "support/SaturateCast.h" |
| 27 | |
| 28 | namespace arm_compute |
| 29 | { |
| 30 | namespace cpu |
| 31 | { |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 32 | template void neon_logits_1d_max<qasymm8_signed_t>(const ITensor *in, ITensor *out, const Window &window); |
| 33 | template void neon_logits_1d_max<qasymm8_t>(const ITensor *in, ITensor *out, const Window &window); |
| 34 | |
| 35 | template <typename T> |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 36 | void neon_softmax_logits_1d_quantized( |
| 37 | const ITensor *in, const ITensor *max, void *const tmp, ITensor *out, float beta, bool is_log, const Window &window) |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 38 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 39 | static_assert(std::is_same<T, qasymm8_t>::value || std::is_same<T, qasymm8_signed_t>::value, |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 40 | "quantized type should be either qasymm8_t or qasymm8_signed_t."); |
| 41 | |
| 42 | const int start_x = in->info()->valid_region().anchor.x(); |
| 43 | const int input_width = in->info()->valid_region().shape.x(); |
| 44 | |
| 45 | const float scale_beta = -beta * in->info()->quantization_info().uniform().scale; |
| 46 | const auto scale_beta_vec = vdupq_n_f32(scale_beta); |
| 47 | |
| 48 | Iterator in_it(in, window); |
| 49 | Iterator max_it(max, window); |
| 50 | Iterator out_it(out, window); |
| 51 | constexpr int vec_size = 16; |
| 52 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 53 | execute_window_loop( |
| 54 | window, |
| 55 | [&](const Coordinates &) |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 56 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 57 | /* Get pointers */ |
| 58 | const auto in_ptr = reinterpret_cast<const T *>(in_it.ptr()) + start_x; |
| 59 | const auto out_ptr = reinterpret_cast<T *>(out_it.ptr()) + start_x; |
| 60 | const auto tmp_ptr = reinterpret_cast<float *>(tmp); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 61 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 62 | float sum{}; |
| 63 | float sum_inversed{}; |
| 64 | |
| 65 | /* Compute exponentials and sum */ |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 66 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 67 | /* Get max value */ |
| 68 | const auto max_val = *reinterpret_cast<const T *>(max_it.ptr()); |
| 69 | const auto vec_max = wrapper::vdup_n(max_val, wrapper::traits::vector_128_tag{}); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 70 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 71 | /* Init sum to zero */ |
| 72 | float32x4x4_t vec_sum = { |
| 73 | vdupq_n_f32(0.f), |
| 74 | vdupq_n_f32(0.f), |
| 75 | vdupq_n_f32(0.f), |
| 76 | vdupq_n_f32(0.f), |
| 77 | }; |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 78 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 79 | /* Loop over row and compute exponentials and sum */ |
| 80 | int x = 0; |
| 81 | for (; x <= (input_width - vec_size); x += vec_size) |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 82 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 83 | auto vec_elements = wrapper::vloadq(in_ptr + x); |
| 84 | vec_elements = wrapper::vqsub(vec_max, vec_elements); |
| 85 | auto vec_elements_flt = convert_int_to_float<float32x4x4_t>(vec_elements); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 86 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 87 | if (is_log) |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 88 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 89 | vec_elements_flt.val[0] = vmulq_f32(vec_elements_flt.val[0], scale_beta_vec); |
| 90 | vec_elements_flt.val[1] = vmulq_f32(vec_elements_flt.val[1], scale_beta_vec); |
| 91 | vec_elements_flt.val[2] = vmulq_f32(vec_elements_flt.val[2], scale_beta_vec); |
| 92 | vec_elements_flt.val[3] = vmulq_f32(vec_elements_flt.val[3], scale_beta_vec); |
| 93 | vec_sum.val[0] = vaddq_f32(vec_sum.val[0], vexpq_f32(vec_elements_flt.val[0])); |
| 94 | vec_sum.val[1] = vaddq_f32(vec_sum.val[1], vexpq_f32(vec_elements_flt.val[1])); |
| 95 | vec_sum.val[2] = vaddq_f32(vec_sum.val[2], vexpq_f32(vec_elements_flt.val[2])); |
| 96 | vec_sum.val[3] = vaddq_f32(vec_sum.val[3], vexpq_f32(vec_elements_flt.val[3])); |
| 97 | } |
| 98 | else |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 99 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 100 | vec_elements_flt.val[0] = vexpq_f32(vmulq_f32(vec_elements_flt.val[0], scale_beta_vec)); |
| 101 | vec_elements_flt.val[1] = vexpq_f32(vmulq_f32(vec_elements_flt.val[1], scale_beta_vec)); |
| 102 | vec_elements_flt.val[2] = vexpq_f32(vmulq_f32(vec_elements_flt.val[2], scale_beta_vec)); |
| 103 | vec_elements_flt.val[3] = vexpq_f32(vmulq_f32(vec_elements_flt.val[3], scale_beta_vec)); |
| 104 | vec_sum.val[0] = vaddq_f32(vec_sum.val[0], vec_elements_flt.val[0]); |
| 105 | vec_sum.val[1] = vaddq_f32(vec_sum.val[1], vec_elements_flt.val[1]); |
| 106 | vec_sum.val[2] = vaddq_f32(vec_sum.val[2], vec_elements_flt.val[2]); |
| 107 | vec_sum.val[3] = vaddq_f32(vec_sum.val[3], vec_elements_flt.val[3]); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 108 | } |
| 109 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 110 | vst4q_f32(tmp_ptr + x, vec_elements_flt); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 111 | } |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 112 | |
| 113 | /* Reduce sum */ |
| 114 | const auto sum_16_byte = |
| 115 | vaddq_f32(vaddq_f32(vec_sum.val[0], vec_sum.val[1]), vaddq_f32(vec_sum.val[2], vec_sum.val[3])); |
| 116 | auto sum_res = vpadd_f32(vget_high_f32(sum_16_byte), vget_low_f32(sum_16_byte)); |
| 117 | sum_res = vpadd_f32(sum_res, sum_res); |
| 118 | sum = wrapper::vgetlane(sum_res, 0); |
| 119 | |
| 120 | /* Run remaining elements */ |
| 121 | for (; x < input_width; ++x) |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 122 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 123 | float element{}; |
| 124 | if (is_log) |
| 125 | { |
| 126 | element = (max_val - in_ptr[x]) * scale_beta; |
| 127 | sum += std::exp(element); |
| 128 | } |
| 129 | else |
| 130 | { |
| 131 | element = std::exp((max_val - in_ptr[x]) * scale_beta); |
| 132 | sum += element; |
| 133 | } |
| 134 | |
| 135 | tmp_ptr[x] = element; |
| 136 | } |
| 137 | |
| 138 | if (!is_log) |
| 139 | { |
| 140 | sum_inversed = 256.f / sum; |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 141 | } |
| 142 | else |
| 143 | { |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 144 | sum = std::log(sum); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 145 | } |
| 146 | } |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 147 | |
| 148 | /* Normalize exponentials */ |
| 149 | { |
| 150 | constexpr bool is_qasymm8_signed = std::is_same<T, qasymm8_signed_t>::value; |
| 151 | /* Loop over row and compute softmax */ |
| 152 | int x = 0; |
| 153 | for (; x <= (input_width - vec_size); x += vec_size) |
| 154 | { |
| 155 | using int_vec_type = wrapper::traits::neon_vector_t<T, 16>; |
| 156 | float32x4x4_t vec_in = vld4q_f32(tmp_ptr + x); |
| 157 | int_vec_type normalized_value{}; |
| 158 | if (is_log) |
| 159 | { |
| 160 | const float32x4x4_t sub = { |
| 161 | vsubq_f32(vec_in.val[0], vdupq_n_f32(sum)), |
| 162 | vsubq_f32(vec_in.val[1], vdupq_n_f32(sum)), |
| 163 | vsubq_f32(vec_in.val[2], vdupq_n_f32(sum)), |
| 164 | vsubq_f32(vec_in.val[3], vdupq_n_f32(sum)), |
| 165 | }; |
| 166 | normalized_value = convert_float_to_int<float32x4x4_t, int_vec_type>(sub); |
| 167 | } |
| 168 | else |
| 169 | { |
| 170 | float32x4x4_t mul = { |
| 171 | vmulq_f32(vec_in.val[0], vdupq_n_f32(sum_inversed)), |
| 172 | vmulq_f32(vec_in.val[1], vdupq_n_f32(sum_inversed)), |
| 173 | vmulq_f32(vec_in.val[2], vdupq_n_f32(sum_inversed)), |
| 174 | vmulq_f32(vec_in.val[3], vdupq_n_f32(sum_inversed)), |
| 175 | }; |
| 176 | |
| 177 | if (is_qasymm8_signed) |
| 178 | { |
| 179 | const auto offset_vec = wrapper::vdup_n(128.f, wrapper::traits::vector_128_tag{}); |
| 180 | mul.val[0] = wrapper::vsub(mul.val[0], offset_vec); |
| 181 | mul.val[1] = wrapper::vsub(mul.val[1], offset_vec); |
| 182 | mul.val[2] = wrapper::vsub(mul.val[2], offset_vec); |
| 183 | mul.val[3] = wrapper::vsub(mul.val[3], offset_vec); |
| 184 | } |
| 185 | |
| 186 | normalized_value = convert_float_to_int<float32x4x4_t, int_vec_type>(mul); |
| 187 | } |
| 188 | wrapper::vstore(out_ptr + x, normalized_value); |
| 189 | } |
| 190 | /* Run remaining elements */ |
| 191 | for (; x < input_width; ++x) |
| 192 | { |
| 193 | if (is_log) |
| 194 | { |
| 195 | out_ptr[x] = utils::cast::saturate_cast<T>(tmp_ptr[x] - sum); |
| 196 | } |
| 197 | else |
| 198 | { |
| 199 | out_ptr[x] = utils::cast::saturate_cast<T>((tmp_ptr[x] * sum_inversed) - |
| 200 | (is_qasymm8_signed ? 128.f : 0)); |
| 201 | } |
| 202 | } |
| 203 | } |
| 204 | }, |
| 205 | in_it, max_it, out_it); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 206 | } |
| 207 | |
Felix Thomasmathibalan | afd38f0 | 2023-09-27 17:46:17 +0100 | [diff] [blame] | 208 | template void neon_softmax_logits_1d_quantized<qasymm8_signed_t>(const ITensor *in, |
| 209 | const ITensor *max, |
| 210 | void *const tmp, |
| 211 | ITensor *out, |
| 212 | float beta, |
| 213 | bool is_log, |
| 214 | const Window &window); |
| 215 | template void neon_softmax_logits_1d_quantized<qasymm8_t>(const ITensor *in, |
| 216 | const ITensor *max, |
| 217 | void *const tmp, |
| 218 | ITensor *out, |
| 219 | float beta, |
| 220 | bool is_log, |
| 221 | const Window &window); |
Dana Zlotnik | a538ae5 | 2022-02-21 13:12:41 +0200 | [diff] [blame] | 222 | } // namespace cpu |
| 223 | } // namespace arm_compute |