blob: 50c6b99d0d635e786b5ed7f337851c81156f84f3 [file] [log] [blame]
// 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/common.h>
#include <xnnpack/vscale.h>
void xnn_f32_vscale_ukernel__avx_unroll32(
size_t n,
const float* x,
float* y,
float c)
{
assert(n != 0);
assert(n % sizeof(float) == 0);
__m256 vc = _mm256_set1_ps(c);
for (; n >= 32 * sizeof(float); n -= 32 * sizeof(float)) {
const __m256 vx0 = _mm256_loadu_ps(x);
const __m256 vx1 = _mm256_loadu_ps(x + 8);
const __m256 vx2 = _mm256_loadu_ps(x + 16);
const __m256 vx3 = _mm256_loadu_ps(x + 24);
x += 32;
const __m256 vy0 = _mm256_mul_ps(vx0, vc);
const __m256 vy1 = _mm256_mul_ps(vx1, vc);
const __m256 vy2 = _mm256_mul_ps(vx2, vc);
const __m256 vy3 = _mm256_mul_ps(vx3, vc);
_mm256_storeu_ps(y, vy0);
_mm256_storeu_ps(y + 8, vy1);
_mm256_storeu_ps(y + 16, vy2);
_mm256_storeu_ps(y + 24, vy3);
y += 32;
}
for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
const __m256 vx = _mm256_loadu_ps(x);
x += 8;
const __m256 vy = _mm256_mul_ps(vx, vc);
_mm256_storeu_ps(y, vy);
y += 8;
}
if XNN_UNLIKELY(n != 0) {
do {
const __m128 vx = _mm_load_ss(x);
x += 1;
const __m128 vy = _mm_mul_ss(vx, _mm256_castps256_ps128(vc));
_mm_store_ss(y, vy);
y += 1;
n -= sizeof(float);
} while (n != 0);
}
}