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/*
* Copyright (c) 2018, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_DSP_X86_SYNONYMS_AVX2_H_
#define AOM_AOM_DSP_X86_SYNONYMS_AVX2_H_
#include <immintrin.h>
#include "config/aom_config.h"
#include "aom/aom_integer.h"
/**
* Various reusable shorthands for x86 SIMD intrinsics.
*
* Intrinsics prefixed with xx_ operate on or return 128bit XMM registers.
* Intrinsics prefixed with yy_ operate on or return 256bit YMM registers.
*/
// Loads and stores to do away with the tedium of casting the address
// to the right type.
static INLINE __m256i yy_load_256(const void *a) {
return _mm256_load_si256((const __m256i *)a);
}
static INLINE __m256i yy_loadu_256(const void *a) {
return _mm256_loadu_si256((const __m256i *)a);
}
static INLINE void yy_store_256(void *const a, const __m256i v) {
_mm256_store_si256((__m256i *)a, v);
}
static INLINE void yy_storeu_256(void *const a, const __m256i v) {
_mm256_storeu_si256((__m256i *)a, v);
}
// The _mm256_set1_epi64x() intrinsic is undefined for some Visual Studio
// compilers. The following function is equivalent to _mm256_set1_epi64x()
// acting on a 32-bit integer.
static INLINE __m256i yy_set1_64_from_32i(int32_t a) {
#if defined(_MSC_VER) && defined(_M_IX86) && _MSC_VER < 1900
return _mm256_set_epi32(0, a, 0, a, 0, a, 0, a);
#else
return _mm256_set1_epi64x((uint32_t)a);
#endif
}
// Some compilers don't have _mm256_set_m128i defined in immintrin.h. We
// therefore define an equivalent function using a different intrinsic.
// ([ hi ], [ lo ]) -> [ hi ][ lo ]
static INLINE __m256i yy_set_m128i(__m128i hi, __m128i lo) {
return _mm256_insertf128_si256(_mm256_castsi128_si256(lo), hi, 1);
}
static INLINE __m256i yy_loadu2_128(const void *hi, const void *lo) {
__m128i mhi = _mm_loadu_si128((__m128i *)(hi));
__m128i mlo = _mm_loadu_si128((__m128i *)(lo));
return yy_set_m128i(mhi, mlo);
}
static INLINE void yy_storeu2_128(void *hi, void *lo, const __m256i a) {
_mm_storeu_si128((__m128i *)hi, _mm256_extracti128_si256(a, 1));
_mm_storeu_si128((__m128i *)lo, _mm256_castsi256_si128(a));
}
static INLINE __m256i yy_roundn_epu16(__m256i v_val_w, int bits) {
const __m256i v_s_w = _mm256_srli_epi16(v_val_w, bits - 1);
return _mm256_avg_epu16(v_s_w, _mm256_setzero_si256());
}
#endif // AOM_AOM_DSP_X86_SYNONYMS_AVX2_H_
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