| // Copyright 2019 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/intrinsics-polyfill.h> |
| |
| |
| void xnn_f32_clamp_ukernel__avx512f( |
| size_t n, |
| const float* x, |
| float* y, |
| const union xnn_f32_output_params params[restrict static 1]) |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| |
| const __m512 voutput_max = _mm512_broadcast_f32x4(_mm_load_ps(params->sse.max)); |
| const __m512 voutput_min = _mm512_broadcast_f32x4(_mm_load_ps(params->sse.min)); |
| |
| for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) { |
| const __m512 vx = _mm512_loadu_ps(x); |
| x += 16; |
| |
| const __m512 vy = _mm512_min_ps(_mm512_max_ps(vx, voutput_min), voutput_max); |
| |
| _mm512_storeu_ps(y, vy); |
| y += 16; |
| } |
| if (n != 0) { |
| assert(n >= 1 * sizeof(float)); |
| assert(n <= 15 * sizeof(float)); |
| // Prepare mask for valid 32-bit elements (depends on n). |
| n >>= 2 /* log2(sizeof(float)) */; |
| const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1))); |
| |
| const __m512 vx = _mm512_maskz_loadu_ps(vmask, x); |
| |
| const __m512 vy = _mm512_min_ps(_mm512_max_ps(vx, voutput_min), voutput_max); |
| |
| _mm512_mask_storeu_ps(y, vmask, vy); |
| } |
| } |