diff options
Diffstat (limited to 'src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp')
-rw-r--r-- | src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp b/src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp index 2d61b72078..505a37174e 100644 --- a/src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp +++ b/src/cpu/kernels/gemm_matrix_add/generic/neon/fp16.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2022 Arm Limited. + * Copyright (c) 2022-2023 Arm Limited. * * SPDX-License-Identifier: MIT * @@ -25,10 +25,55 @@ #include "src/cpu/kernels/gemm_matrix_add/generic/neon/impl.h" +#include <arm_neon.h> + namespace arm_compute { namespace cpu { +namespace +{ +void matrix_addition_f16(const ITensor *src, ITensor *dst, const Window &window, float beta) +{ + ARM_COMPUTE_ERROR_ON_NULLPTR(src, dst); + const float16x8_t beta_f16 = vdupq_n_f16(beta); + + constexpr int window_step_x = 16; + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + Window win = window.collapse_if_possible(window, Window::DimZ); + win.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator in(src, win); + Iterator out(dst, win); + + execute_window_loop(win, [&](const Coordinates &) + { + const auto in_ptr = reinterpret_cast<const float16_t *>(in.ptr()); + const auto out_ptr = reinterpret_cast<float16_t *>(out.ptr()); + + int x = window_start_x; + for(; x < (window_end_x - window_step_x); x += window_step_x) + { + float16x8x2_t alpha_ab = vld2q_f16(out_ptr + x); + const float16x8x2_t c = vld2q_f16(in_ptr + x); + // Multiply matrix C by its weight and accumulate + alpha_ab.val[0] = vaddq_f16(alpha_ab.val[0], vmulq_f16(c.val[0], beta_f16)); + alpha_ab.val[1] = vaddq_f16(alpha_ab.val[1], vmulq_f16(c.val[1], beta_f16)); + + vst2q_f16(out_ptr + x, alpha_ab); + } + + // Left-over loop + for(; x < window_end_x; ++x) + { + *(out_ptr + x) += *(in_ptr + x) * static_cast<float16_t>(beta); + } + }, + in, out); +} +} // namespace void neon_fp16_gemm_matrix_add(const ITensor *src, ITensor *dst, const Window &window, float beta) { return matrix_addition_f16(src, dst, window, beta); |