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