+++ /dev/null
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
-
- Stockfish is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef STOCKFISH_SIMD_H_INCLUDED
-#define STOCKFISH_SIMD_H_INCLUDED
-
-#if defined(USE_AVX2)
-# include <immintrin.h>
-
-#elif defined(USE_SSE41)
-# include <smmintrin.h>
-
-#elif defined(USE_SSSE3)
-# include <tmmintrin.h>
-
-#elif defined(USE_SSE2)
-# include <emmintrin.h>
-
-#elif defined(USE_MMX)
-# include <mmintrin.h>
-
-#elif defined(USE_NEON)
-# include <arm_neon.h>
-#endif
-
-// The inline asm is only safe for GCC, where it is necessary to get good codegen.
-// See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101693
-// Clang does fine without it.
-// Play around here: https://godbolt.org/z/7EWqrYq51
-#if (defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER))
-#define USE_INLINE_ASM
-#endif
-
-// Use either the AVX512 or AVX-VNNI version of the VNNI instructions.
-#if defined(USE_AVXVNNI)
-#define VNNI_PREFIX "%{vex%} "
-#else
-#define VNNI_PREFIX ""
-#endif
-
-namespace Stockfish::Simd {
-
-#if defined (USE_AVX512)
-
- [[maybe_unused]] static int m512_hadd(__m512i sum, int bias) {
- return _mm512_reduce_add_epi32(sum) + bias;
- }
-
- /*
- Parameters:
- sum0 = [zmm0.i128[0], zmm0.i128[1], zmm0.i128[2], zmm0.i128[3]]
- sum1 = [zmm1.i128[0], zmm1.i128[1], zmm1.i128[2], zmm1.i128[3]]
- sum2 = [zmm2.i128[0], zmm2.i128[1], zmm2.i128[2], zmm2.i128[3]]
- sum3 = [zmm3.i128[0], zmm3.i128[1], zmm3.i128[2], zmm3.i128[3]]
-
- Returns:
- ret = [
- reduce_add_epi32(zmm0.i128[0]), reduce_add_epi32(zmm1.i128[0]), reduce_add_epi32(zmm2.i128[0]), reduce_add_epi32(zmm3.i128[0]),
- reduce_add_epi32(zmm0.i128[1]), reduce_add_epi32(zmm1.i128[1]), reduce_add_epi32(zmm2.i128[1]), reduce_add_epi32(zmm3.i128[1]),
- reduce_add_epi32(zmm0.i128[2]), reduce_add_epi32(zmm1.i128[2]), reduce_add_epi32(zmm2.i128[2]), reduce_add_epi32(zmm3.i128[2]),
- reduce_add_epi32(zmm0.i128[3]), reduce_add_epi32(zmm1.i128[3]), reduce_add_epi32(zmm2.i128[3]), reduce_add_epi32(zmm3.i128[3])
- ]
- */
- [[maybe_unused]] static __m512i m512_hadd128x16_interleave(
- __m512i sum0, __m512i sum1, __m512i sum2, __m512i sum3) {
-
- __m512i sum01a = _mm512_unpacklo_epi32(sum0, sum1);
- __m512i sum01b = _mm512_unpackhi_epi32(sum0, sum1);
-
- __m512i sum23a = _mm512_unpacklo_epi32(sum2, sum3);
- __m512i sum23b = _mm512_unpackhi_epi32(sum2, sum3);
-
- __m512i sum01 = _mm512_add_epi32(sum01a, sum01b);
- __m512i sum23 = _mm512_add_epi32(sum23a, sum23b);
-
- __m512i sum0123a = _mm512_unpacklo_epi64(sum01, sum23);
- __m512i sum0123b = _mm512_unpackhi_epi64(sum01, sum23);
-
- return _mm512_add_epi32(sum0123a, sum0123b);
- }
-
- [[maybe_unused]] static __m128i m512_haddx4(
- __m512i sum0, __m512i sum1, __m512i sum2, __m512i sum3,
- __m128i bias) {
-
- __m512i sum = m512_hadd128x16_interleave(sum0, sum1, sum2, sum3);
-
- __m256i sum256lo = _mm512_castsi512_si256(sum);
- __m256i sum256hi = _mm512_extracti64x4_epi64(sum, 1);
-
- sum256lo = _mm256_add_epi32(sum256lo, sum256hi);
-
- __m128i sum128lo = _mm256_castsi256_si128(sum256lo);
- __m128i sum128hi = _mm256_extracti128_si256(sum256lo, 1);
-
- return _mm_add_epi32(_mm_add_epi32(sum128lo, sum128hi), bias);
- }
-
- [[maybe_unused]] static void m512_add_dpbusd_epi32(
- __m512i& acc,
- __m512i a,
- __m512i b) {
-
-# if defined (USE_VNNI)
-# if defined (USE_INLINE_ASM)
- asm(
- "vpdpbusd %[b], %[a], %[acc]\n\t"
- : [acc]"+v"(acc)
- : [a]"v"(a), [b]"vm"(b)
- );
-# else
- acc = _mm512_dpbusd_epi32(acc, a, b);
-# endif
-# else
-# if defined (USE_INLINE_ASM)
- __m512i tmp = _mm512_maddubs_epi16(a, b);
- asm(
- "vpmaddwd %[tmp], %[ones], %[tmp]\n\t"
- "vpaddd %[acc], %[tmp], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp]"+&v"(tmp)
- : [ones]"v"(_mm512_set1_epi16(1))
- );
-# else
- __m512i product0 = _mm512_maddubs_epi16(a, b);
- product0 = _mm512_madd_epi16(product0, _mm512_set1_epi16(1));
- acc = _mm512_add_epi32(acc, product0);
-# endif
-# endif
- }
-
- [[maybe_unused]] static void m512_add_dpbusd_epi32x2(
- __m512i& acc,
- __m512i a0, __m512i b0,
- __m512i a1, __m512i b1) {
-
-# if defined (USE_VNNI)
-# if defined (USE_INLINE_ASM)
- asm(
- "vpdpbusd %[b0], %[a0], %[acc]\n\t"
- "vpdpbusd %[b1], %[a1], %[acc]\n\t"
- : [acc]"+v"(acc)
- : [a0]"v"(a0), [b0]"vm"(b0), [a1]"v"(a1), [b1]"vm"(b1)
- );
-# else
- acc = _mm512_dpbusd_epi32(acc, a0, b0);
- acc = _mm512_dpbusd_epi32(acc, a1, b1);
-# endif
-# else
-# if defined (USE_INLINE_ASM)
- __m512i tmp0 = _mm512_maddubs_epi16(a0, b0);
- __m512i tmp1 = _mm512_maddubs_epi16(a1, b1);
- asm(
- "vpaddsw %[tmp0], %[tmp1], %[tmp0]\n\t"
- "vpmaddwd %[tmp0], %[ones], %[tmp0]\n\t"
- "vpaddd %[acc], %[tmp0], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
- : [tmp1]"v"(tmp1), [ones]"v"(_mm512_set1_epi16(1))
- );
-# else
- __m512i product0 = _mm512_maddubs_epi16(a0, b0);
- __m512i product1 = _mm512_maddubs_epi16(a1, b1);
- product0 = _mm512_adds_epi16(product0, product1);
- product0 = _mm512_madd_epi16(product0, _mm512_set1_epi16(1));
- acc = _mm512_add_epi32(acc, product0);
-# endif
-# endif
- }
-
-#endif
-
-#if defined (USE_AVX2)
-
- [[maybe_unused]] static int m256_hadd(__m256i sum, int bias) {
- __m128i sum128 = _mm_add_epi32(_mm256_castsi256_si128(sum), _mm256_extracti128_si256(sum, 1));
- sum128 = _mm_add_epi32(sum128, _mm_shuffle_epi32(sum128, _MM_PERM_BADC));
- sum128 = _mm_add_epi32(sum128, _mm_shuffle_epi32(sum128, _MM_PERM_CDAB));
- return _mm_cvtsi128_si32(sum128) + bias;
- }
-
- [[maybe_unused]] static __m128i m256_haddx4(
- __m256i sum0, __m256i sum1, __m256i sum2, __m256i sum3,
- __m128i bias) {
-
- sum0 = _mm256_hadd_epi32(sum0, sum1);
- sum2 = _mm256_hadd_epi32(sum2, sum3);
-
- sum0 = _mm256_hadd_epi32(sum0, sum2);
-
- __m128i sum128lo = _mm256_castsi256_si128(sum0);
- __m128i sum128hi = _mm256_extracti128_si256(sum0, 1);
-
- return _mm_add_epi32(_mm_add_epi32(sum128lo, sum128hi), bias);
- }
-
- [[maybe_unused]] static void m256_add_dpbusd_epi32(
- __m256i& acc,
- __m256i a,
- __m256i b) {
-
-# if defined (USE_VNNI)
-# if defined (USE_INLINE_ASM)
- asm(
- VNNI_PREFIX "vpdpbusd %[b], %[a], %[acc]\n\t"
- : [acc]"+v"(acc)
- : [a]"v"(a), [b]"vm"(b)
- );
-# else
- acc = _mm256_dpbusd_epi32(acc, a, b);
-# endif
-# else
-# if defined (USE_INLINE_ASM)
- __m256i tmp = _mm256_maddubs_epi16(a, b);
- asm(
- "vpmaddwd %[tmp], %[ones], %[tmp]\n\t"
- "vpaddd %[acc], %[tmp], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp]"+&v"(tmp)
- : [ones]"v"(_mm256_set1_epi16(1))
- );
-# else
- __m256i product0 = _mm256_maddubs_epi16(a, b);
- product0 = _mm256_madd_epi16(product0, _mm256_set1_epi16(1));
- acc = _mm256_add_epi32(acc, product0);
-# endif
-# endif
- }
-
- [[maybe_unused]] static void m256_add_dpbusd_epi32x2(
- __m256i& acc,
- __m256i a0, __m256i b0,
- __m256i a1, __m256i b1) {
-
-# if defined (USE_VNNI)
-# if defined (USE_INLINE_ASM)
- asm(
- VNNI_PREFIX "vpdpbusd %[b0], %[a0], %[acc]\n\t"
- VNNI_PREFIX "vpdpbusd %[b1], %[a1], %[acc]\n\t"
- : [acc]"+v"(acc)
- : [a0]"v"(a0), [b0]"vm"(b0), [a1]"v"(a1), [b1]"vm"(b1)
- );
-# else
- acc = _mm256_dpbusd_epi32(acc, a0, b0);
- acc = _mm256_dpbusd_epi32(acc, a1, b1);
-# endif
-# else
-# if defined (USE_INLINE_ASM)
- __m256i tmp0 = _mm256_maddubs_epi16(a0, b0);
- __m256i tmp1 = _mm256_maddubs_epi16(a1, b1);
- asm(
- "vpaddsw %[tmp0], %[tmp1], %[tmp0]\n\t"
- "vpmaddwd %[tmp0], %[ones], %[tmp0]\n\t"
- "vpaddd %[acc], %[tmp0], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
- : [tmp1]"v"(tmp1), [ones]"v"(_mm256_set1_epi16(1))
- );
-# else
- __m256i product0 = _mm256_maddubs_epi16(a0, b0);
- __m256i product1 = _mm256_maddubs_epi16(a1, b1);
- product0 = _mm256_adds_epi16(product0, product1);
- product0 = _mm256_madd_epi16(product0, _mm256_set1_epi16(1));
- acc = _mm256_add_epi32(acc, product0);
-# endif
-# endif
- }
-
-#endif
-
-#if defined (USE_SSSE3)
-
- [[maybe_unused]] static int m128_hadd(__m128i sum, int bias) {
- sum = _mm_add_epi32(sum, _mm_shuffle_epi32(sum, 0x4E)); //_MM_PERM_BADC
- sum = _mm_add_epi32(sum, _mm_shuffle_epi32(sum, 0xB1)); //_MM_PERM_CDAB
- return _mm_cvtsi128_si32(sum) + bias;
- }
-
- [[maybe_unused]] static __m128i m128_haddx4(
- __m128i sum0, __m128i sum1, __m128i sum2, __m128i sum3,
- __m128i bias) {
-
- sum0 = _mm_hadd_epi32(sum0, sum1);
- sum2 = _mm_hadd_epi32(sum2, sum3);
- sum0 = _mm_hadd_epi32(sum0, sum2);
- return _mm_add_epi32(sum0, bias);
- }
-
- [[maybe_unused]] static void m128_add_dpbusd_epi32(
- __m128i& acc,
- __m128i a,
- __m128i b) {
-
-# if defined (USE_INLINE_ASM)
- __m128i tmp = _mm_maddubs_epi16(a, b);
- asm(
- "pmaddwd %[ones], %[tmp]\n\t"
- "paddd %[tmp], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp]"+&v"(tmp)
- : [ones]"v"(_mm_set1_epi16(1))
- );
-# else
- __m128i product0 = _mm_maddubs_epi16(a, b);
- product0 = _mm_madd_epi16(product0, _mm_set1_epi16(1));
- acc = _mm_add_epi32(acc, product0);
-# endif
- }
-
- [[maybe_unused]] static void m128_add_dpbusd_epi32x2(
- __m128i& acc,
- __m128i a0, __m128i b0,
- __m128i a1, __m128i b1) {
-
-# if defined (USE_INLINE_ASM)
- __m128i tmp0 = _mm_maddubs_epi16(a0, b0);
- __m128i tmp1 = _mm_maddubs_epi16(a1, b1);
- asm(
- "paddsw %[tmp1], %[tmp0]\n\t"
- "pmaddwd %[ones], %[tmp0]\n\t"
- "paddd %[tmp0], %[acc]\n\t"
- : [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
- : [tmp1]"v"(tmp1), [ones]"v"(_mm_set1_epi16(1))
- );
-# else
- __m128i product0 = _mm_maddubs_epi16(a0, b0);
- __m128i product1 = _mm_maddubs_epi16(a1, b1);
- product0 = _mm_adds_epi16(product0, product1);
- product0 = _mm_madd_epi16(product0, _mm_set1_epi16(1));
- acc = _mm_add_epi32(acc, product0);
-# endif
- }
-
-#endif
-
-#if defined (USE_NEON)
-
- [[maybe_unused]] static int neon_m128_reduce_add_epi32(int32x4_t s) {
-# if USE_NEON >= 8
- return vaddvq_s32(s);
-# else
- return s[0] + s[1] + s[2] + s[3];
-# endif
- }
-
- [[maybe_unused]] static int neon_m128_hadd(int32x4_t sum, int bias) {
- return neon_m128_reduce_add_epi32(sum) + bias;
- }
-
- [[maybe_unused]] static int32x4_t neon_m128_haddx4(
- int32x4_t sum0, int32x4_t sum1, int32x4_t sum2, int32x4_t sum3,
- int32x4_t bias) {
-
- int32x4_t hsums {
- neon_m128_reduce_add_epi32(sum0),
- neon_m128_reduce_add_epi32(sum1),
- neon_m128_reduce_add_epi32(sum2),
- neon_m128_reduce_add_epi32(sum3)
- };
- return vaddq_s32(hsums, bias);
- }
-
- [[maybe_unused]] static void neon_m128_add_dpbusd_epi32x2(
- int32x4_t& acc,
- int8x8_t a0, int8x8_t b0,
- int8x8_t a1, int8x8_t b1) {
-
- int16x8_t product = vmull_s8(a0, b0);
- product = vmlal_s8(product, a1, b1);
- acc = vpadalq_s16(acc, product);
- }
-
-#endif
-
-}
-
-#endif // STOCKFISH_SIMD_H_INCLUDED
projects / stockfish / blobdiff