diff options
Diffstat (limited to 'src/cpu/kernels/meanstddevnorm/generic/neon/fp16.cpp')
| -rw-r--r-- | src/cpu/kernels/meanstddevnorm/generic/neon/fp16.cpp | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/cpu/kernels/meanstddevnorm/generic/neon/fp16.cpp b/src/cpu/kernels/meanstddevnorm/generic/neon/fp16.cpp new file mode 100644 index 0000000000..344b9df0c8 --- /dev/null +++ b/src/cpu/kernels/meanstddevnorm/generic/neon/fp16.cpp @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2022-2024 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. + */ +#if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) + +#include "src/core/NEON/wrapper/wrapper.h" +#include "src/cpu/CpuTypes.h" +#include "src/cpu/kernels/meanstddevnorm/generic/neon/impl.h" + +namespace arm_compute +{ +namespace cpu +{ +template <> +void mean_stddev_normalization<float16_t, 8>(ITensor *input, ITensor *output, float epsilon, const Window &window) +{ + // Set build options + Window win = window; + win.set(Window::DimX, Window::Dimension(0, 1, 1)); + + const int window_step_x = 8; + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + Iterator input_itr(input, win); + Iterator output_itr(output, win); + + execute_window_loop( + win, + [&](const Coordinates &) + { + int x = window_start_x; + auto in_ptr = reinterpret_cast<const float16_t *>(input_itr.ptr()); + auto out_ptr = reinterpret_cast<float16_t *>(output_itr.ptr()); + + float16x8_t sum_vec = vdupq_n_f16(static_cast<float16_t>(0.0f)); + float32x4_t sum_sq_vec = vdupq_n_f32(0.0f); + + for (; x <= (window_end_x - window_step_x); x += window_step_x) + { + float16x8_t data = vld1q_f16(in_ptr + x); + sum_vec = vaddq_f16(sum_vec, data); + float32x4_t dl = vcvt_f32_f16(vget_low_f16(data)); + float32x4_t dh = vcvt_f32_f16(vget_high_f16(data)); + sum_sq_vec = vaddq_f32(sum_sq_vec, vmulq_f32(dl, dl)); + sum_sq_vec = vaddq_f32(sum_sq_vec, vmulq_f32(dh, dh)); + } + + float32x4_t sum_carry_res = + vpaddq_f32(vcvt_f32_f16(vget_high_f16(sum_vec)), vcvt_f32_f16(vget_low_f16(sum_vec))); + float sum = vaddvq_f32(sum_carry_res); + float sum_sq = vaddvq_f32(sum_sq_vec); + + // Compute left-over elements + for (; x < window_end_x; ++x) + { + const float fdata = static_cast<float>(*(in_ptr + x)); + sum += fdata; + sum_sq += fdata * fdata; + } + + float16_t mean = static_cast<float16_t>(sum / input->info()->dimension(0)); + float var = (sum_sq / input->info()->dimension(0)) - (mean * mean); + float16_t stddev_inv = static_cast<float16_t>(1.f / sqrt(var + epsilon)); + + float16x8_t mean_vec = vdupq_n_f16(mean); + float16x8_t stddev_inv_vec = vdupq_n_f16(stddev_inv); + + for (x = window_start_x; x <= (window_end_x - window_step_x); x += window_step_x) + { + float16x8_t data = vld1q_f16(in_ptr + x); + float16x8_t res = vmulq_f16(vsubq_f16(data, mean_vec), stddev_inv_vec); + // Store results + vst1q_f16(out_ptr + x, res); + } + for (; x < window_end_x; ++x) + { + *(out_ptr + x) = (*(in_ptr + x) - mean) * stddev_inv; + } + }, + input_itr, output_itr); +} + +void neon_fp16_meanstddevnorm(ITensor *input, ITensor *output, float epsilon, const Window &window) +{ + return mean_stddev_normalization<float16_t, 8>(input, output, epsilon, window); +} +} // namespace cpu +} // namespace arm_compute +#endif /* defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) */ |