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a3298b22ec
Depending on instruction set, significant speedups are observed for the vectorized path: log1p wall time is reduced 60-93% (2.5x - 15x speedup) expm1 wall time is reduced 0-85% (1x - 7x speedup) The scalar path is slower by 20-30% due to the extra branch needed to handle +infinity correctly. Full benchmarks measured on Intel(R) Xeon(R) Gold 6154 here: https://bitbucket.org/snippets/rmlarsen/MXBkpM
855 lines
36 KiB
C++
855 lines
36 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner (benoit.steiner.goog@gmail.com)
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_PACKET_MATH_AVX_H
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#define EIGEN_PACKET_MATH_AVX_H
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namespace Eigen {
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namespace internal {
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#ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD
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#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 8
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#endif
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#if !defined(EIGEN_VECTORIZE_AVX512) && !defined(EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS)
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#define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS 16
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#endif
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#ifdef EIGEN_VECTORIZE_FMA
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#ifndef EIGEN_HAS_SINGLE_INSTRUCTION_MADD
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#define EIGEN_HAS_SINGLE_INSTRUCTION_MADD
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#endif
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#endif
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typedef __m256 Packet8f;
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typedef __m256i Packet8i;
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typedef __m256d Packet4d;
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template<> struct is_arithmetic<__m256> { enum { value = true }; };
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template<> struct is_arithmetic<__m256i> { enum { value = true }; };
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template<> struct is_arithmetic<__m256d> { enum { value = true }; };
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#define _EIGEN_DECLARE_CONST_Packet8f(NAME,X) \
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const Packet8f p8f_##NAME = pset1<Packet8f>(X)
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#define _EIGEN_DECLARE_CONST_Packet4d(NAME,X) \
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const Packet4d p4d_##NAME = pset1<Packet4d>(X)
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#define _EIGEN_DECLARE_CONST_Packet8f_FROM_INT(NAME,X) \
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const Packet8f p8f_##NAME = _mm256_castsi256_ps(pset1<Packet8i>(X))
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#define _EIGEN_DECLARE_CONST_Packet8i(NAME,X) \
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const Packet8i p8i_##NAME = pset1<Packet8i>(X)
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// Use the packet_traits defined in AVX512/PacketMath.h instead if we're going
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// to leverage AVX512 instructions.
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#ifndef EIGEN_VECTORIZE_AVX512
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template<> struct packet_traits<float> : default_packet_traits
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{
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typedef Packet8f type;
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typedef Packet4f half;
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enum {
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Vectorizable = 1,
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AlignedOnScalar = 1,
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size=8,
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HasHalfPacket = 1,
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HasDiv = 1,
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HasSin = EIGEN_FAST_MATH,
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HasCos = EIGEN_FAST_MATH,
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HasLog = 1,
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HasLog1p = 1,
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HasExpm1 = 1,
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HasExp = 1,
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HasSqrt = 1,
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HasRsqrt = 1,
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HasTanh = EIGEN_FAST_MATH,
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HasBlend = 1,
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HasRound = 1,
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HasFloor = 1,
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HasCeil = 1
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};
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};
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template<> struct packet_traits<double> : default_packet_traits
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{
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typedef Packet4d type;
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typedef Packet2d half;
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enum {
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Vectorizable = 1,
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AlignedOnScalar = 1,
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size=4,
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HasHalfPacket = 1,
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HasDiv = 1,
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HasExp = 1,
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HasSqrt = 1,
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HasRsqrt = 1,
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HasBlend = 1,
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HasRound = 1,
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HasFloor = 1,
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HasCeil = 1
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};
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};
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#endif
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template<> struct scalar_div_cost<float,true> { enum { value = 14 }; };
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template<> struct scalar_div_cost<double,true> { enum { value = 16 }; };
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/* Proper support for integers is only provided by AVX2. In the meantime, we'll
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use SSE instructions and packets to deal with integers.
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template<> struct packet_traits<int> : default_packet_traits
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{
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typedef Packet8i type;
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enum {
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Vectorizable = 1,
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AlignedOnScalar = 1,
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size=8
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};
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};
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*/
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template<> struct unpacket_traits<Packet8f> {
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typedef float type;
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typedef Packet4f half;
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typedef Packet8i integer_packet;
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typedef uint8_t mask_t;
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enum {size=8, alignment=Aligned32, vectorizable=true, masked_load_available=true, masked_store_available=true};
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};
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template<> struct unpacket_traits<Packet4d> {
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typedef double type;
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typedef Packet2d half;
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enum {size=4, alignment=Aligned32, vectorizable=true, masked_load_available=false, masked_store_available=false};
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};
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template<> struct unpacket_traits<Packet8i> { typedef int type; typedef Packet4i half; enum {size=8, alignment=Aligned32, vectorizable=false, masked_load_available=false, masked_store_available=false}; };
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template<> EIGEN_STRONG_INLINE Packet8f pset1<Packet8f>(const float& from) { return _mm256_set1_ps(from); }
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template<> EIGEN_STRONG_INLINE Packet4d pset1<Packet4d>(const double& from) { return _mm256_set1_pd(from); }
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template<> EIGEN_STRONG_INLINE Packet8i pset1<Packet8i>(const int& from) { return _mm256_set1_epi32(from); }
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template<> EIGEN_STRONG_INLINE Packet8f pset1frombits<Packet8f>(unsigned int from) { return _mm256_castsi256_ps(pset1<Packet8i>(from)); }
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template<> EIGEN_STRONG_INLINE Packet8f pzero(const Packet8f& /*a*/) { return _mm256_setzero_ps(); }
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template<> EIGEN_STRONG_INLINE Packet4d pzero(const Packet4d& /*a*/) { return _mm256_setzero_pd(); }
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template<> EIGEN_STRONG_INLINE Packet8i pzero(const Packet8i& /*a*/) { return _mm256_setzero_si256(); }
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template<> EIGEN_STRONG_INLINE Packet8f pload1<Packet8f>(const float* from) { return _mm256_broadcast_ss(from); }
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template<> EIGEN_STRONG_INLINE Packet4d pload1<Packet4d>(const double* from) { return _mm256_broadcast_sd(from); }
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template<> EIGEN_STRONG_INLINE Packet8f plset<Packet8f>(const float& a) { return _mm256_add_ps(_mm256_set1_ps(a), _mm256_set_ps(7.0,6.0,5.0,4.0,3.0,2.0,1.0,0.0)); }
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template<> EIGEN_STRONG_INLINE Packet4d plset<Packet4d>(const double& a) { return _mm256_add_pd(_mm256_set1_pd(a), _mm256_set_pd(3.0,2.0,1.0,0.0)); }
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template<> EIGEN_STRONG_INLINE Packet8f padd<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_add_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d padd<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_add_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8i padd<Packet8i>(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
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return _mm256_add_epi32(a,b);
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#else
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__m128i lo = _mm_add_epi32(_mm256_extractf128_si256(a, 0), _mm256_extractf128_si256(b, 0));
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__m128i hi = _mm_add_epi32(_mm256_extractf128_si256(a, 1), _mm256_extractf128_si256(b, 1));
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return _mm256_insertf128_si256(_mm256_castsi128_si256(lo), (hi), 1);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f psub<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_sub_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d psub<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_sub_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8f pnegate(const Packet8f& a)
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{
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return _mm256_sub_ps(_mm256_set1_ps(0.0),a);
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}
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template<> EIGEN_STRONG_INLINE Packet4d pnegate(const Packet4d& a)
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{
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return _mm256_sub_pd(_mm256_set1_pd(0.0),a);
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}
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template<> EIGEN_STRONG_INLINE Packet8f pconj(const Packet8f& a) { return a; }
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template<> EIGEN_STRONG_INLINE Packet4d pconj(const Packet4d& a) { return a; }
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template<> EIGEN_STRONG_INLINE Packet8i pconj(const Packet8i& a) { return a; }
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template<> EIGEN_STRONG_INLINE Packet8f pmul<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_mul_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d pmul<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_mul_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8f pdiv<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_div_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d pdiv<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_div_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8i pdiv<Packet8i>(const Packet8i& /*a*/, const Packet8i& /*b*/)
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{ eigen_assert(false && "packet integer division are not supported by AVX");
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return pset1<Packet8i>(0);
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}
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#ifdef EIGEN_VECTORIZE_FMA
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template<> EIGEN_STRONG_INLINE Packet8f pmadd(const Packet8f& a, const Packet8f& b, const Packet8f& c) {
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#if ( (EIGEN_COMP_GNUC_STRICT && EIGEN_COMP_GNUC<80) || (EIGEN_COMP_CLANG) )
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// Clang stupidly generates a vfmadd213ps instruction plus some vmovaps on registers,
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// and even register spilling with clang>=6.0 (bug 1637).
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// Gcc stupidly generates a vfmadd132ps instruction.
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// So let's enforce it to generate a vfmadd231ps instruction since the most common use
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// case is to accumulate the result of the product.
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Packet8f res = c;
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__asm__("vfmadd231ps %[a], %[b], %[c]" : [c] "+x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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return _mm256_fmadd_ps(a,b,c);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet4d pmadd(const Packet4d& a, const Packet4d& b, const Packet4d& c) {
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#if ( (EIGEN_COMP_GNUC_STRICT && EIGEN_COMP_GNUC<80) || (EIGEN_COMP_CLANG) )
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// see above
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Packet4d res = c;
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__asm__("vfmadd231pd %[a], %[b], %[c]" : [c] "+x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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return _mm256_fmadd_pd(a,b,c);
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#endif
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}
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#endif
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template<> EIGEN_STRONG_INLINE Packet8f pmin<Packet8f>(const Packet8f& a, const Packet8f& b) {
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#if EIGEN_COMP_GNUC && EIGEN_COMP_GNUC < 63
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// There appears to be a bug in GCC, by which the optimizer may flip
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// the argument order in calls to _mm_min_ps/_mm_max_ps, so we have to
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// resort to inline ASM here. This is supposed to be fixed in gcc6.3,
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// see also: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72867
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Packet8f res;
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asm("vminps %[a], %[b], %[res]" : [res] "=x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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// Arguments are swapped to match NaN propagation behavior of std::min.
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return _mm256_min_ps(b,a);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet4d pmin<Packet4d>(const Packet4d& a, const Packet4d& b) {
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#if EIGEN_COMP_GNUC && EIGEN_COMP_GNUC < 63
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// See pmin above
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Packet4d res;
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asm("vminpd %[a], %[b], %[res]" : [res] "=x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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// Arguments are swapped to match NaN propagation behavior of std::min.
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return _mm256_min_pd(b,a);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pmax<Packet8f>(const Packet8f& a, const Packet8f& b) {
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#if EIGEN_COMP_GNUC && EIGEN_COMP_GNUC < 63
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// See pmin above
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Packet8f res;
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asm("vmaxps %[a], %[b], %[res]" : [res] "=x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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// Arguments are swapped to match NaN propagation behavior of std::max.
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return _mm256_max_ps(b,a);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet4d pmax<Packet4d>(const Packet4d& a, const Packet4d& b) {
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#if EIGEN_COMP_GNUC && EIGEN_COMP_GNUC < 63
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// See pmin above
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Packet4d res;
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asm("vmaxpd %[a], %[b], %[res]" : [res] "=x" (res) : [a] "x" (a), [b] "x" (b));
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return res;
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#else
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// Arguments are swapped to match NaN propagation behavior of std::max.
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return _mm256_max_pd(b,a);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pcmp_le(const Packet8f& a, const Packet8f& b) { return _mm256_cmp_ps(a,b,_CMP_LE_OQ); }
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template<> EIGEN_STRONG_INLINE Packet8f pcmp_lt(const Packet8f& a, const Packet8f& b) { return _mm256_cmp_ps(a,b,_CMP_LT_OQ); }
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template<> EIGEN_STRONG_INLINE Packet8f pcmp_eq(const Packet8f& a, const Packet8f& b) { return _mm256_cmp_ps(a,b,_CMP_EQ_OQ); }
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template<> EIGEN_STRONG_INLINE Packet4d pcmp_eq(const Packet4d& a, const Packet4d& b) { return _mm256_cmp_pd(a,b,_CMP_EQ_OQ); }
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template<> EIGEN_STRONG_INLINE Packet8f pcmp_lt_or_nan(const Packet8f& a, const Packet8f& b) { return _mm256_cmp_ps(a, b, _CMP_NGE_UQ); }
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template<> EIGEN_STRONG_INLINE Packet8i pcmp_eq(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
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return _mm256_cmpeq_epi32(a,b);
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#else
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__m128i lo = _mm_cmpeq_epi32(_mm256_extractf128_si256(a, 0), _mm256_extractf128_si256(b, 0));
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__m128i hi = _mm_cmpeq_epi32(_mm256_extractf128_si256(a, 1), _mm256_extractf128_si256(b, 1));
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return _mm256_insertf128_si256(_mm256_castsi128_si256(lo), (hi), 1);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pround<Packet8f>(const Packet8f& a) { return _mm256_round_ps(a, _MM_FROUND_CUR_DIRECTION); }
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template<> EIGEN_STRONG_INLINE Packet4d pround<Packet4d>(const Packet4d& a) { return _mm256_round_pd(a, _MM_FROUND_CUR_DIRECTION); }
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template<> EIGEN_STRONG_INLINE Packet8f pceil<Packet8f>(const Packet8f& a) { return _mm256_ceil_ps(a); }
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template<> EIGEN_STRONG_INLINE Packet4d pceil<Packet4d>(const Packet4d& a) { return _mm256_ceil_pd(a); }
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template<> EIGEN_STRONG_INLINE Packet8f pfloor<Packet8f>(const Packet8f& a) { return _mm256_floor_ps(a); }
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template<> EIGEN_STRONG_INLINE Packet4d pfloor<Packet4d>(const Packet4d& a) { return _mm256_floor_pd(a); }
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template<> EIGEN_STRONG_INLINE Packet8i ptrue<Packet8i>(const Packet8i& a) {
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#ifdef EIGEN_VECTORIZE_AVX2
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// vpcmpeqd has lower latency than the more general vcmpps
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return _mm256_cmpeq_epi32(a,a);
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#else
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const __m256 b = _mm256_castsi256_ps(a);
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return _mm256_castps_si256(_mm256_cmp_ps(b,b,_CMP_TRUE_UQ));
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f ptrue<Packet8f>(const Packet8f& a) {
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#ifdef EIGEN_VECTORIZE_AVX2
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// vpcmpeqd has lower latency than the more general vcmpps
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const __m256i b = _mm256_castps_si256(a);
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return _mm256_castsi256_ps(_mm256_cmpeq_epi32(b,b));
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#else
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return _mm256_cmp_ps(a,a,_CMP_TRUE_UQ);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet4d ptrue<Packet4d>(const Packet4d& a) {
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#ifdef EIGEN_VECTORIZE_AVX2
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// vpcmpeqq has lower latency than the more general vcmppd
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const __m256i b = _mm256_castpd_si256(a);
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return _mm256_castsi256_pd(_mm256_cmpeq_epi64(b,b));
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#else
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return _mm256_cmp_pd(a,a,_CMP_TRUE_UQ);
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pand<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_and_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d pand<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_and_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8i pand<Packet8i>(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
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return _mm256_and_si256(a,b);
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#else
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return _mm256_castps_si256(_mm256_and_ps(_mm256_castsi256_ps(a),_mm256_castsi256_ps(b)));
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f por<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_or_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d por<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_or_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8i por<Packet8i>(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
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return _mm256_or_si256(a,b);
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#else
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return _mm256_castps_si256(_mm256_or_ps(_mm256_castsi256_ps(a),_mm256_castsi256_ps(b)));
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pxor<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_xor_ps(a,b); }
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template<> EIGEN_STRONG_INLINE Packet4d pxor<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_xor_pd(a,b); }
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template<> EIGEN_STRONG_INLINE Packet8i pxor<Packet8i>(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
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return _mm256_xor_si256(a,b);
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#else
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return _mm256_castps_si256(_mm256_xor_ps(_mm256_castsi256_ps(a),_mm256_castsi256_ps(b)));
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#endif
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}
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template<> EIGEN_STRONG_INLINE Packet8f pandnot<Packet8f>(const Packet8f& a, const Packet8f& b) { return _mm256_andnot_ps(b,a); }
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template<> EIGEN_STRONG_INLINE Packet4d pandnot<Packet4d>(const Packet4d& a, const Packet4d& b) { return _mm256_andnot_pd(b,a); }
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template<> EIGEN_STRONG_INLINE Packet8i pandnot<Packet8i>(const Packet8i& a, const Packet8i& b) {
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#ifdef EIGEN_VECTORIZE_AVX2
|
|
return _mm256_andnot_si256(b,a);
|
|
#else
|
|
return _mm256_castps_si256(_mm256_andnot_ps(_mm256_castsi256_ps(b),_mm256_castsi256_ps(a)));
|
|
#endif
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pselect<Packet8f>(const Packet8f& mask, const Packet8f& a, const Packet8f& b)
|
|
{ return _mm256_blendv_ps(b,a,mask); }
|
|
template<> EIGEN_STRONG_INLINE Packet4d pselect<Packet4d>(const Packet4d& mask, const Packet4d& a, const Packet4d& b)
|
|
{ return _mm256_blendv_pd(b,a,mask); }
|
|
|
|
template<int N> EIGEN_STRONG_INLINE Packet8i pshiftright(Packet8i a) {
|
|
#ifdef EIGEN_VECTORIZE_AVX2
|
|
return _mm256_srli_epi32(a, N);
|
|
#else
|
|
__m128i lo = _mm_srli_epi32(_mm256_extractf128_si256(a, 0), N);
|
|
__m128i hi = _mm_srli_epi32(_mm256_extractf128_si256(a, 1), N);
|
|
return _mm256_insertf128_si256(_mm256_castsi128_si256(lo), (hi), 1);
|
|
#endif
|
|
}
|
|
|
|
template<int N> EIGEN_STRONG_INLINE Packet8i pshiftleft(Packet8i a) {
|
|
#ifdef EIGEN_VECTORIZE_AVX2
|
|
return _mm256_slli_epi32(a, N);
|
|
#else
|
|
__m128i lo = _mm_slli_epi32(_mm256_extractf128_si256(a, 0), N);
|
|
__m128i hi = _mm_slli_epi32(_mm256_extractf128_si256(a, 1), N);
|
|
return _mm256_insertf128_si256(_mm256_castsi128_si256(lo), (hi), 1);
|
|
#endif
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pload<Packet8f>(const float* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm256_load_ps(from); }
|
|
template<> EIGEN_STRONG_INLINE Packet4d pload<Packet4d>(const double* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm256_load_pd(from); }
|
|
template<> EIGEN_STRONG_INLINE Packet8i pload<Packet8i>(const int* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm256_load_si256(reinterpret_cast<const __m256i*>(from)); }
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f ploadu<Packet8f>(const float* from) { EIGEN_DEBUG_UNALIGNED_LOAD return _mm256_loadu_ps(from); }
|
|
template<> EIGEN_STRONG_INLINE Packet4d ploadu<Packet4d>(const double* from) { EIGEN_DEBUG_UNALIGNED_LOAD return _mm256_loadu_pd(from); }
|
|
template<> EIGEN_STRONG_INLINE Packet8i ploadu<Packet8i>(const int* from) { EIGEN_DEBUG_UNALIGNED_LOAD return _mm256_loadu_si256(reinterpret_cast<const __m256i*>(from)); }
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f ploadu<Packet8f>(const float* from, uint8_t umask) {
|
|
Packet8i mask = _mm256_set1_epi8(static_cast<char>(umask));
|
|
const Packet8i bit_mask = _mm256_set_epi32(0xffffff7f, 0xffffffbf, 0xffffffdf, 0xffffffef, 0xfffffff7, 0xfffffffb, 0xfffffffd, 0xfffffffe);
|
|
mask = por<Packet8i>(mask, bit_mask);
|
|
mask = pcmp_eq<Packet8i>(mask, _mm256_set1_epi32(0xffffffff));
|
|
EIGEN_DEBUG_UNALIGNED_LOAD return _mm256_maskload_ps(from, mask);
|
|
}
|
|
|
|
// Loads 4 floats from memory a returns the packet {a0, a0 a1, a1, a2, a2, a3, a3}
|
|
template<> EIGEN_STRONG_INLINE Packet8f ploaddup<Packet8f>(const float* from)
|
|
{
|
|
// TODO try to find a way to avoid the need of a temporary register
|
|
// Packet8f tmp = _mm256_castps128_ps256(_mm_loadu_ps(from));
|
|
// tmp = _mm256_insertf128_ps(tmp, _mm_movehl_ps(_mm256_castps256_ps128(tmp),_mm256_castps256_ps128(tmp)), 1);
|
|
// return _mm256_unpacklo_ps(tmp,tmp);
|
|
|
|
// _mm256_insertf128_ps is very slow on Haswell, thus:
|
|
Packet8f tmp = _mm256_broadcast_ps((const __m128*)(const void*)from);
|
|
// mimic an "inplace" permutation of the lower 128bits using a blend
|
|
tmp = _mm256_blend_ps(tmp,_mm256_castps128_ps256(_mm_permute_ps( _mm256_castps256_ps128(tmp), _MM_SHUFFLE(1,0,1,0))), 15);
|
|
// then we can perform a consistent permutation on the global register to get everything in shape:
|
|
return _mm256_permute_ps(tmp, _MM_SHUFFLE(3,3,2,2));
|
|
}
|
|
// Loads 2 doubles from memory a returns the packet {a0, a0 a1, a1}
|
|
template<> EIGEN_STRONG_INLINE Packet4d ploaddup<Packet4d>(const double* from)
|
|
{
|
|
Packet4d tmp = _mm256_broadcast_pd((const __m128d*)(const void*)from);
|
|
return _mm256_permute_pd(tmp, 3<<2);
|
|
}
|
|
|
|
// Loads 2 floats from memory a returns the packet {a0, a0 a0, a0, a1, a1, a1, a1}
|
|
template<> EIGEN_STRONG_INLINE Packet8f ploadquad<Packet8f>(const float* from)
|
|
{
|
|
Packet8f tmp = _mm256_castps128_ps256(_mm_broadcast_ss(from));
|
|
return _mm256_insertf128_ps(tmp, _mm_broadcast_ss(from+1), 1);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE void pstore<float>(float* to, const Packet8f& from) { EIGEN_DEBUG_ALIGNED_STORE _mm256_store_ps(to, from); }
|
|
template<> EIGEN_STRONG_INLINE void pstore<double>(double* to, const Packet4d& from) { EIGEN_DEBUG_ALIGNED_STORE _mm256_store_pd(to, from); }
|
|
template<> EIGEN_STRONG_INLINE void pstore<int>(int* to, const Packet8i& from) { EIGEN_DEBUG_ALIGNED_STORE _mm256_storeu_si256(reinterpret_cast<__m256i*>(to), from); }
|
|
|
|
template<> EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet8f& from) { EIGEN_DEBUG_UNALIGNED_STORE _mm256_storeu_ps(to, from); }
|
|
template<> EIGEN_STRONG_INLINE void pstoreu<double>(double* to, const Packet4d& from) { EIGEN_DEBUG_UNALIGNED_STORE _mm256_storeu_pd(to, from); }
|
|
template<> EIGEN_STRONG_INLINE void pstoreu<int>(int* to, const Packet8i& from) { EIGEN_DEBUG_UNALIGNED_STORE _mm256_storeu_si256(reinterpret_cast<__m256i*>(to), from); }
|
|
|
|
template<> EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet8f& from, uint8_t umask) {
|
|
Packet8i mask = _mm256_set1_epi8(static_cast<char>(umask));
|
|
const Packet8i bit_mask = _mm256_set_epi32(0xffffff7f, 0xffffffbf, 0xffffffdf, 0xffffffef, 0xfffffff7, 0xfffffffb, 0xfffffffd, 0xfffffffe);
|
|
mask = por<Packet8i>(mask, bit_mask);
|
|
mask = pcmp_eq<Packet8i>(mask, _mm256_set1_epi32(0xffffffff));
|
|
EIGEN_DEBUG_UNALIGNED_STORE return _mm256_maskstore_ps(to, mask, from);
|
|
}
|
|
|
|
// NOTE: leverage _mm256_i32gather_ps and _mm256_i32gather_pd if AVX2 instructions are available
|
|
// NOTE: for the record the following seems to be slower: return _mm256_i32gather_ps(from, _mm256_set1_epi32(stride), 4);
|
|
template<> EIGEN_DEVICE_FUNC inline Packet8f pgather<float, Packet8f>(const float* from, Index stride)
|
|
{
|
|
return _mm256_set_ps(from[7*stride], from[6*stride], from[5*stride], from[4*stride],
|
|
from[3*stride], from[2*stride], from[1*stride], from[0*stride]);
|
|
}
|
|
template<> EIGEN_DEVICE_FUNC inline Packet4d pgather<double, Packet4d>(const double* from, Index stride)
|
|
{
|
|
return _mm256_set_pd(from[3*stride], from[2*stride], from[1*stride], from[0*stride]);
|
|
}
|
|
|
|
template<> EIGEN_DEVICE_FUNC inline void pscatter<float, Packet8f>(float* to, const Packet8f& from, Index stride)
|
|
{
|
|
__m128 low = _mm256_extractf128_ps(from, 0);
|
|
to[stride*0] = _mm_cvtss_f32(low);
|
|
to[stride*1] = _mm_cvtss_f32(_mm_shuffle_ps(low, low, 1));
|
|
to[stride*2] = _mm_cvtss_f32(_mm_shuffle_ps(low, low, 2));
|
|
to[stride*3] = _mm_cvtss_f32(_mm_shuffle_ps(low, low, 3));
|
|
|
|
__m128 high = _mm256_extractf128_ps(from, 1);
|
|
to[stride*4] = _mm_cvtss_f32(high);
|
|
to[stride*5] = _mm_cvtss_f32(_mm_shuffle_ps(high, high, 1));
|
|
to[stride*6] = _mm_cvtss_f32(_mm_shuffle_ps(high, high, 2));
|
|
to[stride*7] = _mm_cvtss_f32(_mm_shuffle_ps(high, high, 3));
|
|
}
|
|
template<> EIGEN_DEVICE_FUNC inline void pscatter<double, Packet4d>(double* to, const Packet4d& from, Index stride)
|
|
{
|
|
__m128d low = _mm256_extractf128_pd(from, 0);
|
|
to[stride*0] = _mm_cvtsd_f64(low);
|
|
to[stride*1] = _mm_cvtsd_f64(_mm_shuffle_pd(low, low, 1));
|
|
__m128d high = _mm256_extractf128_pd(from, 1);
|
|
to[stride*2] = _mm_cvtsd_f64(high);
|
|
to[stride*3] = _mm_cvtsd_f64(_mm_shuffle_pd(high, high, 1));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE void pstore1<Packet8f>(float* to, const float& a)
|
|
{
|
|
Packet8f pa = pset1<Packet8f>(a);
|
|
pstore(to, pa);
|
|
}
|
|
template<> EIGEN_STRONG_INLINE void pstore1<Packet4d>(double* to, const double& a)
|
|
{
|
|
Packet4d pa = pset1<Packet4d>(a);
|
|
pstore(to, pa);
|
|
}
|
|
template<> EIGEN_STRONG_INLINE void pstore1<Packet8i>(int* to, const int& a)
|
|
{
|
|
Packet8i pa = pset1<Packet8i>(a);
|
|
pstore(to, pa);
|
|
}
|
|
|
|
#ifndef EIGEN_VECTORIZE_AVX512
|
|
template<> EIGEN_STRONG_INLINE void prefetch<float>(const float* addr) { _mm_prefetch((SsePrefetchPtrType)(addr), _MM_HINT_T0); }
|
|
template<> EIGEN_STRONG_INLINE void prefetch<double>(const double* addr) { _mm_prefetch((SsePrefetchPtrType)(addr), _MM_HINT_T0); }
|
|
template<> EIGEN_STRONG_INLINE void prefetch<int>(const int* addr) { _mm_prefetch((SsePrefetchPtrType)(addr), _MM_HINT_T0); }
|
|
#endif
|
|
|
|
template<> EIGEN_STRONG_INLINE float pfirst<Packet8f>(const Packet8f& a) {
|
|
return _mm_cvtss_f32(_mm256_castps256_ps128(a));
|
|
}
|
|
template<> EIGEN_STRONG_INLINE double pfirst<Packet4d>(const Packet4d& a) {
|
|
return _mm_cvtsd_f64(_mm256_castpd256_pd128(a));
|
|
}
|
|
template<> EIGEN_STRONG_INLINE int pfirst<Packet8i>(const Packet8i& a) {
|
|
return _mm_cvtsi128_si32(_mm256_castsi256_si128(a));
|
|
}
|
|
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f preverse(const Packet8f& a)
|
|
{
|
|
__m256 tmp = _mm256_shuffle_ps(a,a,0x1b);
|
|
return _mm256_permute2f128_ps(tmp, tmp, 1);
|
|
}
|
|
template<> EIGEN_STRONG_INLINE Packet4d preverse(const Packet4d& a)
|
|
{
|
|
__m256d tmp = _mm256_shuffle_pd(a,a,5);
|
|
return _mm256_permute2f128_pd(tmp, tmp, 1);
|
|
#if 0
|
|
// This version is unlikely to be faster as _mm256_shuffle_ps and _mm256_permute_pd
|
|
// exhibit the same latency/throughput, but it is here for future reference/benchmarking...
|
|
__m256d swap_halves = _mm256_permute2f128_pd(a,a,1);
|
|
return _mm256_permute_pd(swap_halves,5);
|
|
#endif
|
|
}
|
|
|
|
// pabs should be ok
|
|
template<> EIGEN_STRONG_INLINE Packet8f pabs(const Packet8f& a)
|
|
{
|
|
const Packet8f mask = _mm256_castsi256_ps(_mm256_setr_epi32(0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF));
|
|
return _mm256_and_ps(a,mask);
|
|
}
|
|
template<> EIGEN_STRONG_INLINE Packet4d pabs(const Packet4d& a)
|
|
{
|
|
const Packet4d mask = _mm256_castsi256_pd(_mm256_setr_epi32(0xFFFFFFFF,0x7FFFFFFF,0xFFFFFFFF,0x7FFFFFFF,0xFFFFFFFF,0x7FFFFFFF,0xFFFFFFFF,0x7FFFFFFF));
|
|
return _mm256_and_pd(a,mask);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pfrexp<Packet8f>(const Packet8f& a, Packet8f& exponent) {
|
|
return pfrexp_float(a,exponent);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pldexp<Packet8f>(const Packet8f& a, const Packet8f& exponent) {
|
|
return pldexp_float(a,exponent);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet4d pldexp<Packet4d>(const Packet4d& a, const Packet4d& exponent) {
|
|
// Build e=2^n by constructing the exponents in a 128-bit vector and
|
|
// shifting them to where they belong in double-precision values.
|
|
Packet4i cst_1023 = pset1<Packet4i>(1023);
|
|
__m128i emm0 = _mm256_cvtpd_epi32(exponent);
|
|
emm0 = _mm_add_epi32(emm0, cst_1023);
|
|
emm0 = _mm_shuffle_epi32(emm0, _MM_SHUFFLE(3, 1, 2, 0));
|
|
__m128i lo = _mm_slli_epi64(emm0, 52);
|
|
__m128i hi = _mm_slli_epi64(_mm_srli_epi64(emm0, 32), 52);
|
|
__m256i e = _mm256_insertf128_si256(_mm256_setzero_si256(), lo, 0);
|
|
e = _mm256_insertf128_si256(e, hi, 1);
|
|
return pmul(a,_mm256_castsi256_pd(e));
|
|
}
|
|
|
|
// preduxp should be ok
|
|
// FIXME: why is this ok? why isn't the simply implementation working as expected?
|
|
template<> EIGEN_STRONG_INLINE Packet8f preduxp<Packet8f>(const Packet8f* vecs)
|
|
{
|
|
__m256 hsum1 = _mm256_hadd_ps(vecs[0], vecs[1]);
|
|
__m256 hsum2 = _mm256_hadd_ps(vecs[2], vecs[3]);
|
|
__m256 hsum3 = _mm256_hadd_ps(vecs[4], vecs[5]);
|
|
__m256 hsum4 = _mm256_hadd_ps(vecs[6], vecs[7]);
|
|
|
|
__m256 hsum5 = _mm256_hadd_ps(hsum1, hsum1);
|
|
__m256 hsum6 = _mm256_hadd_ps(hsum2, hsum2);
|
|
__m256 hsum7 = _mm256_hadd_ps(hsum3, hsum3);
|
|
__m256 hsum8 = _mm256_hadd_ps(hsum4, hsum4);
|
|
|
|
__m256 perm1 = _mm256_permute2f128_ps(hsum5, hsum5, 0x23);
|
|
__m256 perm2 = _mm256_permute2f128_ps(hsum6, hsum6, 0x23);
|
|
__m256 perm3 = _mm256_permute2f128_ps(hsum7, hsum7, 0x23);
|
|
__m256 perm4 = _mm256_permute2f128_ps(hsum8, hsum8, 0x23);
|
|
|
|
__m256 sum1 = _mm256_add_ps(perm1, hsum5);
|
|
__m256 sum2 = _mm256_add_ps(perm2, hsum6);
|
|
__m256 sum3 = _mm256_add_ps(perm3, hsum7);
|
|
__m256 sum4 = _mm256_add_ps(perm4, hsum8);
|
|
|
|
__m256 blend1 = _mm256_blend_ps(sum1, sum2, 0xcc);
|
|
__m256 blend2 = _mm256_blend_ps(sum3, sum4, 0xcc);
|
|
|
|
__m256 final = _mm256_blend_ps(blend1, blend2, 0xf0);
|
|
return final;
|
|
}
|
|
template<> EIGEN_STRONG_INLINE Packet4d preduxp<Packet4d>(const Packet4d* vecs)
|
|
{
|
|
Packet4d tmp0, tmp1;
|
|
|
|
tmp0 = _mm256_hadd_pd(vecs[0], vecs[1]);
|
|
tmp0 = _mm256_add_pd(tmp0, _mm256_permute2f128_pd(tmp0, tmp0, 1));
|
|
|
|
tmp1 = _mm256_hadd_pd(vecs[2], vecs[3]);
|
|
tmp1 = _mm256_add_pd(tmp1, _mm256_permute2f128_pd(tmp1, tmp1, 1));
|
|
|
|
return _mm256_blend_pd(tmp0, tmp1, 0xC);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE float predux<Packet8f>(const Packet8f& a)
|
|
{
|
|
return predux(Packet4f(_mm_add_ps(_mm256_castps256_ps128(a),_mm256_extractf128_ps(a,1))));
|
|
}
|
|
template<> EIGEN_STRONG_INLINE double predux<Packet4d>(const Packet4d& a)
|
|
{
|
|
return predux(Packet2d(_mm_add_pd(_mm256_castpd256_pd128(a),_mm256_extractf128_pd(a,1))));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet4f predux_half_dowto4<Packet8f>(const Packet8f& a)
|
|
{
|
|
return _mm_add_ps(_mm256_castps256_ps128(a),_mm256_extractf128_ps(a,1));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE float predux_mul<Packet8f>(const Packet8f& a)
|
|
{
|
|
Packet8f tmp;
|
|
tmp = _mm256_mul_ps(a, _mm256_permute2f128_ps(a,a,1));
|
|
tmp = _mm256_mul_ps(tmp, _mm256_shuffle_ps(tmp,tmp,_MM_SHUFFLE(1,0,3,2)));
|
|
return pfirst(_mm256_mul_ps(tmp, _mm256_shuffle_ps(tmp,tmp,1)));
|
|
}
|
|
template<> EIGEN_STRONG_INLINE double predux_mul<Packet4d>(const Packet4d& a)
|
|
{
|
|
Packet4d tmp;
|
|
tmp = _mm256_mul_pd(a, _mm256_permute2f128_pd(a,a,1));
|
|
return pfirst(_mm256_mul_pd(tmp, _mm256_shuffle_pd(tmp,tmp,1)));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE float predux_min<Packet8f>(const Packet8f& a)
|
|
{
|
|
Packet8f tmp = _mm256_min_ps(a, _mm256_permute2f128_ps(a,a,1));
|
|
tmp = _mm256_min_ps(tmp, _mm256_shuffle_ps(tmp,tmp,_MM_SHUFFLE(1,0,3,2)));
|
|
return pfirst(_mm256_min_ps(tmp, _mm256_shuffle_ps(tmp,tmp,1)));
|
|
}
|
|
template<> EIGEN_STRONG_INLINE double predux_min<Packet4d>(const Packet4d& a)
|
|
{
|
|
Packet4d tmp = _mm256_min_pd(a, _mm256_permute2f128_pd(a,a,1));
|
|
return pfirst(_mm256_min_pd(tmp, _mm256_shuffle_pd(tmp, tmp, 1)));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE float predux_max<Packet8f>(const Packet8f& a)
|
|
{
|
|
Packet8f tmp = _mm256_max_ps(a, _mm256_permute2f128_ps(a,a,1));
|
|
tmp = _mm256_max_ps(tmp, _mm256_shuffle_ps(tmp,tmp,_MM_SHUFFLE(1,0,3,2)));
|
|
return pfirst(_mm256_max_ps(tmp, _mm256_shuffle_ps(tmp,tmp,1)));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE double predux_max<Packet4d>(const Packet4d& a)
|
|
{
|
|
Packet4d tmp = _mm256_max_pd(a, _mm256_permute2f128_pd(a,a,1));
|
|
return pfirst(_mm256_max_pd(tmp, _mm256_shuffle_pd(tmp, tmp, 1)));
|
|
}
|
|
|
|
// not needed yet
|
|
// template<> EIGEN_STRONG_INLINE bool predux_all(const Packet8f& x)
|
|
// {
|
|
// return _mm256_movemask_ps(x)==0xFF;
|
|
// }
|
|
|
|
template<> EIGEN_STRONG_INLINE bool predux_any(const Packet8f& x)
|
|
{
|
|
return _mm256_movemask_ps(x)!=0;
|
|
}
|
|
|
|
template<int Offset>
|
|
struct palign_impl<Offset,Packet8f>
|
|
{
|
|
static EIGEN_STRONG_INLINE void run(Packet8f& first, const Packet8f& second)
|
|
{
|
|
if (Offset==1)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 1);
|
|
Packet8f tmp1 = _mm256_permute_ps (first, _MM_SHUFFLE(0,3,2,1));
|
|
Packet8f tmp2 = _mm256_permute2f128_ps (tmp1, tmp1, 1);
|
|
first = _mm256_blend_ps(tmp1, tmp2, 0x88);
|
|
}
|
|
else if (Offset==2)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 3);
|
|
Packet8f tmp1 = _mm256_permute_ps (first, _MM_SHUFFLE(1,0,3,2));
|
|
Packet8f tmp2 = _mm256_permute2f128_ps (tmp1, tmp1, 1);
|
|
first = _mm256_blend_ps(tmp1, tmp2, 0xcc);
|
|
}
|
|
else if (Offset==3)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 7);
|
|
Packet8f tmp1 = _mm256_permute_ps (first, _MM_SHUFFLE(2,1,0,3));
|
|
Packet8f tmp2 = _mm256_permute2f128_ps (tmp1, tmp1, 1);
|
|
first = _mm256_blend_ps(tmp1, tmp2, 0xee);
|
|
}
|
|
else if (Offset==4)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 15);
|
|
Packet8f tmp1 = _mm256_permute_ps (first, _MM_SHUFFLE(3,2,1,0));
|
|
Packet8f tmp2 = _mm256_permute2f128_ps (tmp1, tmp1, 1);
|
|
first = _mm256_permute_ps(tmp2, _MM_SHUFFLE(3,2,1,0));
|
|
}
|
|
else if (Offset==5)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 31);
|
|
first = _mm256_permute2f128_ps(first, first, 1);
|
|
Packet8f tmp = _mm256_permute_ps (first, _MM_SHUFFLE(0,3,2,1));
|
|
first = _mm256_permute2f128_ps(tmp, tmp, 1);
|
|
first = _mm256_blend_ps(tmp, first, 0x88);
|
|
}
|
|
else if (Offset==6)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 63);
|
|
first = _mm256_permute2f128_ps(first, first, 1);
|
|
Packet8f tmp = _mm256_permute_ps (first, _MM_SHUFFLE(1,0,3,2));
|
|
first = _mm256_permute2f128_ps(tmp, tmp, 1);
|
|
first = _mm256_blend_ps(tmp, first, 0xcc);
|
|
}
|
|
else if (Offset==7)
|
|
{
|
|
first = _mm256_blend_ps(first, second, 127);
|
|
first = _mm256_permute2f128_ps(first, first, 1);
|
|
Packet8f tmp = _mm256_permute_ps (first, _MM_SHUFFLE(2,1,0,3));
|
|
first = _mm256_permute2f128_ps(tmp, tmp, 1);
|
|
first = _mm256_blend_ps(tmp, first, 0xee);
|
|
}
|
|
}
|
|
};
|
|
|
|
template<int Offset>
|
|
struct palign_impl<Offset,Packet4d>
|
|
{
|
|
static EIGEN_STRONG_INLINE void run(Packet4d& first, const Packet4d& second)
|
|
{
|
|
if (Offset==1)
|
|
{
|
|
first = _mm256_blend_pd(first, second, 1);
|
|
__m256d tmp = _mm256_permute_pd(first, 5);
|
|
first = _mm256_permute2f128_pd(tmp, tmp, 1);
|
|
first = _mm256_blend_pd(tmp, first, 0xA);
|
|
}
|
|
else if (Offset==2)
|
|
{
|
|
first = _mm256_blend_pd(first, second, 3);
|
|
first = _mm256_permute2f128_pd(first, first, 1);
|
|
}
|
|
else if (Offset==3)
|
|
{
|
|
first = _mm256_blend_pd(first, second, 7);
|
|
__m256d tmp = _mm256_permute_pd(first, 5);
|
|
first = _mm256_permute2f128_pd(tmp, tmp, 1);
|
|
first = _mm256_blend_pd(tmp, first, 5);
|
|
}
|
|
}
|
|
};
|
|
|
|
EIGEN_DEVICE_FUNC inline void
|
|
ptranspose(PacketBlock<Packet8f,8>& kernel) {
|
|
__m256 T0 = _mm256_unpacklo_ps(kernel.packet[0], kernel.packet[1]);
|
|
__m256 T1 = _mm256_unpackhi_ps(kernel.packet[0], kernel.packet[1]);
|
|
__m256 T2 = _mm256_unpacklo_ps(kernel.packet[2], kernel.packet[3]);
|
|
__m256 T3 = _mm256_unpackhi_ps(kernel.packet[2], kernel.packet[3]);
|
|
__m256 T4 = _mm256_unpacklo_ps(kernel.packet[4], kernel.packet[5]);
|
|
__m256 T5 = _mm256_unpackhi_ps(kernel.packet[4], kernel.packet[5]);
|
|
__m256 T6 = _mm256_unpacklo_ps(kernel.packet[6], kernel.packet[7]);
|
|
__m256 T7 = _mm256_unpackhi_ps(kernel.packet[6], kernel.packet[7]);
|
|
__m256 S0 = _mm256_shuffle_ps(T0,T2,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S1 = _mm256_shuffle_ps(T0,T2,_MM_SHUFFLE(3,2,3,2));
|
|
__m256 S2 = _mm256_shuffle_ps(T1,T3,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S3 = _mm256_shuffle_ps(T1,T3,_MM_SHUFFLE(3,2,3,2));
|
|
__m256 S4 = _mm256_shuffle_ps(T4,T6,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S5 = _mm256_shuffle_ps(T4,T6,_MM_SHUFFLE(3,2,3,2));
|
|
__m256 S6 = _mm256_shuffle_ps(T5,T7,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S7 = _mm256_shuffle_ps(T5,T7,_MM_SHUFFLE(3,2,3,2));
|
|
kernel.packet[0] = _mm256_permute2f128_ps(S0, S4, 0x20);
|
|
kernel.packet[1] = _mm256_permute2f128_ps(S1, S5, 0x20);
|
|
kernel.packet[2] = _mm256_permute2f128_ps(S2, S6, 0x20);
|
|
kernel.packet[3] = _mm256_permute2f128_ps(S3, S7, 0x20);
|
|
kernel.packet[4] = _mm256_permute2f128_ps(S0, S4, 0x31);
|
|
kernel.packet[5] = _mm256_permute2f128_ps(S1, S5, 0x31);
|
|
kernel.packet[6] = _mm256_permute2f128_ps(S2, S6, 0x31);
|
|
kernel.packet[7] = _mm256_permute2f128_ps(S3, S7, 0x31);
|
|
}
|
|
|
|
EIGEN_DEVICE_FUNC inline void
|
|
ptranspose(PacketBlock<Packet8f,4>& kernel) {
|
|
__m256 T0 = _mm256_unpacklo_ps(kernel.packet[0], kernel.packet[1]);
|
|
__m256 T1 = _mm256_unpackhi_ps(kernel.packet[0], kernel.packet[1]);
|
|
__m256 T2 = _mm256_unpacklo_ps(kernel.packet[2], kernel.packet[3]);
|
|
__m256 T3 = _mm256_unpackhi_ps(kernel.packet[2], kernel.packet[3]);
|
|
|
|
__m256 S0 = _mm256_shuffle_ps(T0,T2,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S1 = _mm256_shuffle_ps(T0,T2,_MM_SHUFFLE(3,2,3,2));
|
|
__m256 S2 = _mm256_shuffle_ps(T1,T3,_MM_SHUFFLE(1,0,1,0));
|
|
__m256 S3 = _mm256_shuffle_ps(T1,T3,_MM_SHUFFLE(3,2,3,2));
|
|
|
|
kernel.packet[0] = _mm256_permute2f128_ps(S0, S1, 0x20);
|
|
kernel.packet[1] = _mm256_permute2f128_ps(S2, S3, 0x20);
|
|
kernel.packet[2] = _mm256_permute2f128_ps(S0, S1, 0x31);
|
|
kernel.packet[3] = _mm256_permute2f128_ps(S2, S3, 0x31);
|
|
}
|
|
|
|
EIGEN_DEVICE_FUNC inline void
|
|
ptranspose(PacketBlock<Packet4d,4>& kernel) {
|
|
__m256d T0 = _mm256_shuffle_pd(kernel.packet[0], kernel.packet[1], 15);
|
|
__m256d T1 = _mm256_shuffle_pd(kernel.packet[0], kernel.packet[1], 0);
|
|
__m256d T2 = _mm256_shuffle_pd(kernel.packet[2], kernel.packet[3], 15);
|
|
__m256d T3 = _mm256_shuffle_pd(kernel.packet[2], kernel.packet[3], 0);
|
|
|
|
kernel.packet[1] = _mm256_permute2f128_pd(T0, T2, 32);
|
|
kernel.packet[3] = _mm256_permute2f128_pd(T0, T2, 49);
|
|
kernel.packet[0] = _mm256_permute2f128_pd(T1, T3, 32);
|
|
kernel.packet[2] = _mm256_permute2f128_pd(T1, T3, 49);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pblend(const Selector<8>& ifPacket, const Packet8f& thenPacket, const Packet8f& elsePacket) {
|
|
const __m256 zero = _mm256_setzero_ps();
|
|
const __m256 select = _mm256_set_ps(ifPacket.select[7], ifPacket.select[6], ifPacket.select[5], ifPacket.select[4], ifPacket.select[3], ifPacket.select[2], ifPacket.select[1], ifPacket.select[0]);
|
|
__m256 false_mask = _mm256_cmp_ps(select, zero, _CMP_EQ_UQ);
|
|
return _mm256_blendv_ps(thenPacket, elsePacket, false_mask);
|
|
}
|
|
template<> EIGEN_STRONG_INLINE Packet4d pblend(const Selector<4>& ifPacket, const Packet4d& thenPacket, const Packet4d& elsePacket) {
|
|
const __m256d zero = _mm256_setzero_pd();
|
|
const __m256d select = _mm256_set_pd(ifPacket.select[3], ifPacket.select[2], ifPacket.select[1], ifPacket.select[0]);
|
|
__m256d false_mask = _mm256_cmp_pd(select, zero, _CMP_EQ_UQ);
|
|
return _mm256_blendv_pd(thenPacket, elsePacket, false_mask);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pinsertfirst(const Packet8f& a, float b)
|
|
{
|
|
return _mm256_blend_ps(a,pset1<Packet8f>(b),1);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet4d pinsertfirst(const Packet4d& a, double b)
|
|
{
|
|
return _mm256_blend_pd(a,pset1<Packet4d>(b),1);
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet8f pinsertlast(const Packet8f& a, float b)
|
|
{
|
|
return _mm256_blend_ps(a,pset1<Packet8f>(b),(1<<7));
|
|
}
|
|
|
|
template<> EIGEN_STRONG_INLINE Packet4d pinsertlast(const Packet4d& a, double b)
|
|
{
|
|
return _mm256_blend_pd(a,pset1<Packet4d>(b),(1<<3));
|
|
}
|
|
|
|
} // end namespace internal
|
|
|
|
} // end namespace Eigen
|
|
|
|
#endif // EIGEN_PACKET_MATH_AVX_H
|