| // Auto-generated file. Do not edit! |
| // Template: src/f32-clamp/avx.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2020 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <immintrin.h> |
| |
| #include <xnnpack/clamp.h> |
| #include <xnnpack/common.h> |
| |
| |
| static const int32_t mask_table[14] = {-1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0}; |
| |
| void xnn_f32_clamp_ukernel__avx_x16( |
| size_t n, |
| const float* x, |
| float* y, |
| const union xnn_f32_minmax_params params[restrict static 1]) |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| |
| const __m256 vy_min = _mm256_broadcast_ps((const __m128*) params->sse.min); |
| const __m256 vy_max = _mm256_broadcast_ps((const __m128*) params->sse.max); |
| |
| for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) { |
| __m256 vacc01234567 = _mm256_loadu_ps(x); |
| __m256 vacc89ABCDEF = _mm256_loadu_ps(x + 8); |
| x += 16; |
| |
| vacc01234567 = _mm256_max_ps(vacc01234567, vy_min); |
| vacc89ABCDEF = _mm256_max_ps(vacc89ABCDEF, vy_min); |
| |
| vacc01234567 = _mm256_min_ps(vacc01234567, vy_max); |
| vacc89ABCDEF = _mm256_min_ps(vacc89ABCDEF, vy_max); |
| |
| _mm256_storeu_ps(y, vacc01234567); |
| _mm256_storeu_ps(y + 8, vacc89ABCDEF); |
| y += 16; |
| } |
| for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) { |
| __m256 vacc = _mm256_loadu_ps(x); |
| x += 8; |
| |
| vacc = _mm256_max_ps(vacc, vy_min); |
| vacc = _mm256_min_ps(vacc, vy_max); |
| |
| _mm256_storeu_ps(y, vacc); |
| y += 8; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| assert(n >= 1 * sizeof(float)); |
| assert(n <= 7 * sizeof(float)); |
| __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) &mask_table[7] - n)); |
| |
| __m256 vacc = _mm256_maskload_ps(x, vmask); |
| vacc = _mm256_max_ps(vacc, vy_min); |
| vacc = _mm256_min_ps(vacc, vy_max); |
| |
| // _mm256_maskstore_ps(y, vmask, vacc) could be used here, but triggers msan failures (probably an msan bug). |
| __m128 vacc_lo = _mm256_castps256_ps128(vacc); |
| if (n & (4 * sizeof(float))) { |
| _mm_storeu_ps(y, vacc_lo); |
| vacc_lo = _mm256_extractf128_ps(vacc, 1); |
| y += 4; |
| } |
| if (n & (2 * sizeof(float))) { |
| _mm_storel_pi((__m64*) y, vacc_lo); |
| vacc_lo = _mm_movehl_ps(vacc_lo, vacc_lo); |
| y += 2; |
| } |
| if (n & (1 * sizeof(float))) { |
| _mm_store_ss(y, vacc_lo); |
| } |
| } |
| } |