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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/x86/synonyms_avx2.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/synonyms_avx2.h b/third_party/aom/aom_dsp/x86/synonyms_avx2.h new file mode 100644 index 0000000000..b729e5f410 --- /dev/null +++ b/third_party/aom/aom_dsp/x86/synonyms_avx2.h @@ -0,0 +1,79 @@ +/* + * 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((const __m128i *)(hi)); + __m128i mlo = _mm_loadu_si128((const __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_ |