From 4a04f7206914a49f5f95adc5eb786237f1a9f547 Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Sun, 23 Oct 2011 17:52:20 +0000 Subject: remove $Id: tags after discussion on the mailign list: http://markmail.org/message/fp7ozcywxum3ar7n --- extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h | 634 +++++++++++++++++++++ 1 file changed, 634 insertions(+) create mode 100644 extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h (limited to 'extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h') diff --git a/extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h b/extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h new file mode 100644 index 00000000000..908e27368e8 --- /dev/null +++ b/extern/Eigen3/Eigen/src/Core/arch/SSE/PacketMath.h @@ -0,0 +1,634 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2008-2009 Gael Guennebaud +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, 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 2 of +// the License, or (at your option) any later version. +// +// Eigen 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 Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see . + +#ifndef EIGEN_PACKET_MATH_SSE_H +#define EIGEN_PACKET_MATH_SSE_H + +namespace internal { + +#ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD +#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 8 +#endif + +#ifndef EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS +#define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS (2*sizeof(void*)) +#endif + +typedef __m128 Packet4f; +typedef __m128i Packet4i; +typedef __m128d Packet2d; + +template<> struct is_arithmetic<__m128> { enum { value = true }; }; +template<> struct is_arithmetic<__m128i> { enum { value = true }; }; +template<> struct is_arithmetic<__m128d> { enum { value = true }; }; + +#define vec4f_swizzle1(v,p,q,r,s) \ + (_mm_castsi128_ps(_mm_shuffle_epi32( _mm_castps_si128(v), ((s)<<6|(r)<<4|(q)<<2|(p))))) + +#define vec4i_swizzle1(v,p,q,r,s) \ + (_mm_shuffle_epi32( v, ((s)<<6|(r)<<4|(q)<<2|(p)))) + +#define vec2d_swizzle1(v,p,q) \ + (_mm_castsi128_pd(_mm_shuffle_epi32( _mm_castpd_si128(v), ((q*2+1)<<6|(q*2)<<4|(p*2+1)<<2|(p*2))))) + +#define vec4f_swizzle2(a,b,p,q,r,s) \ + (_mm_shuffle_ps( (a), (b), ((s)<<6|(r)<<4|(q)<<2|(p)))) + +#define vec4i_swizzle2(a,b,p,q,r,s) \ + (_mm_castps_si128( (_mm_shuffle_ps( _mm_castsi128_ps(a), _mm_castsi128_ps(b), ((s)<<6|(r)<<4|(q)<<2|(p)))))) + +#define _EIGEN_DECLARE_CONST_Packet4f(NAME,X) \ + const Packet4f p4f_##NAME = pset1(X) + +#define _EIGEN_DECLARE_CONST_Packet4f_FROM_INT(NAME,X) \ + const Packet4f p4f_##NAME = _mm_castsi128_ps(pset1(X)) + +#define _EIGEN_DECLARE_CONST_Packet4i(NAME,X) \ + const Packet4i p4i_##NAME = pset1(X) + + +template<> struct packet_traits : default_packet_traits +{ + typedef Packet4f type; + enum { + Vectorizable = 1, + AlignedOnScalar = 1, + size=4, + + HasDiv = 1, + HasSin = EIGEN_FAST_MATH, + HasCos = EIGEN_FAST_MATH, + HasLog = 1, + HasExp = 1, + HasSqrt = 1 + }; +}; +template<> struct packet_traits : default_packet_traits +{ + typedef Packet2d type; + enum { + Vectorizable = 1, + AlignedOnScalar = 1, + size=2, + + HasDiv = 1 + }; +}; +template<> struct packet_traits : default_packet_traits +{ + typedef Packet4i type; + enum { + // FIXME check the Has* + Vectorizable = 1, + AlignedOnScalar = 1, + size=4 + }; +}; + +template<> struct unpacket_traits { typedef float type; enum {size=4}; }; +template<> struct unpacket_traits { typedef double type; enum {size=2}; }; +template<> struct unpacket_traits { typedef int type; enum {size=4}; }; + +template<> EIGEN_STRONG_INLINE Packet4f pset1(const float& from) { return _mm_set1_ps(from); } +template<> EIGEN_STRONG_INLINE Packet2d pset1(const double& from) { return _mm_set1_pd(from); } +template<> EIGEN_STRONG_INLINE Packet4i pset1(const int& from) { return _mm_set1_epi32(from); } + +template<> EIGEN_STRONG_INLINE Packet4f plset(const float& a) { return _mm_add_ps(pset1(a), _mm_set_ps(3,2,1,0)); } +template<> EIGEN_STRONG_INLINE Packet2d plset(const double& a) { return _mm_add_pd(pset1(a),_mm_set_pd(1,0)); } +template<> EIGEN_STRONG_INLINE Packet4i plset(const int& a) { return _mm_add_epi32(pset1(a),_mm_set_epi32(3,2,1,0)); } + +template<> EIGEN_STRONG_INLINE Packet4f padd(const Packet4f& a, const Packet4f& b) { return _mm_add_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d padd(const Packet2d& a, const Packet2d& b) { return _mm_add_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i padd(const Packet4i& a, const Packet4i& b) { return _mm_add_epi32(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f psub(const Packet4f& a, const Packet4f& b) { return _mm_sub_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d psub(const Packet2d& a, const Packet2d& b) { return _mm_sub_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i psub(const Packet4i& a, const Packet4i& b) { return _mm_sub_epi32(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f pnegate(const Packet4f& a) +{ + const Packet4f mask = _mm_castsi128_ps(_mm_setr_epi32(0x80000000,0x80000000,0x80000000,0x80000000)); + return _mm_xor_ps(a,mask); +} +template<> EIGEN_STRONG_INLINE Packet2d pnegate(const Packet2d& a) +{ + const Packet2d mask = _mm_castsi128_pd(_mm_setr_epi32(0x0,0x80000000,0x0,0x80000000)); + return _mm_xor_pd(a,mask); +} +template<> EIGEN_STRONG_INLINE Packet4i pnegate(const Packet4i& a) +{ + return psub(_mm_setr_epi32(0,0,0,0), a); +} + +template<> EIGEN_STRONG_INLINE Packet4f pmul(const Packet4f& a, const Packet4f& b) { return _mm_mul_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pmul(const Packet2d& a, const Packet2d& b) { return _mm_mul_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pmul(const Packet4i& a, const Packet4i& b) +{ +#ifdef EIGEN_VECTORIZE_SSE4_1 + return _mm_mullo_epi32(a,b); +#else + // this version is slightly faster than 4 scalar products + return vec4i_swizzle1( + vec4i_swizzle2( + _mm_mul_epu32(a,b), + _mm_mul_epu32(vec4i_swizzle1(a,1,0,3,2), + vec4i_swizzle1(b,1,0,3,2)), + 0,2,0,2), + 0,2,1,3); +#endif +} + +template<> EIGEN_STRONG_INLINE Packet4f pdiv(const Packet4f& a, const Packet4f& b) { return _mm_div_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pdiv(const Packet2d& a, const Packet2d& b) { return _mm_div_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pdiv(const Packet4i& /*a*/, const Packet4i& /*b*/) +{ eigen_assert(false && "packet integer division are not supported by SSE"); + return pset1(0); +} + +// for some weird raisons, it has to be overloaded for packet of integers +template<> EIGEN_STRONG_INLINE Packet4i pmadd(const Packet4i& a, const Packet4i& b, const Packet4i& c) { return padd(pmul(a,b), c); } + +template<> EIGEN_STRONG_INLINE Packet4f pmin(const Packet4f& a, const Packet4f& b) { return _mm_min_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pmin(const Packet2d& a, const Packet2d& b) { return _mm_min_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pmin(const Packet4i& a, const Packet4i& b) +{ + // after some bench, this version *is* faster than a scalar implementation + Packet4i mask = _mm_cmplt_epi32(a,b); + return _mm_or_si128(_mm_and_si128(mask,a),_mm_andnot_si128(mask,b)); +} + +template<> EIGEN_STRONG_INLINE Packet4f pmax(const Packet4f& a, const Packet4f& b) { return _mm_max_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pmax(const Packet2d& a, const Packet2d& b) { return _mm_max_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pmax(const Packet4i& a, const Packet4i& b) +{ + // after some bench, this version *is* faster than a scalar implementation + Packet4i mask = _mm_cmpgt_epi32(a,b); + return _mm_or_si128(_mm_and_si128(mask,a),_mm_andnot_si128(mask,b)); +} + +template<> EIGEN_STRONG_INLINE Packet4f pand(const Packet4f& a, const Packet4f& b) { return _mm_and_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pand(const Packet2d& a, const Packet2d& b) { return _mm_and_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pand(const Packet4i& a, const Packet4i& b) { return _mm_and_si128(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f por(const Packet4f& a, const Packet4f& b) { return _mm_or_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d por(const Packet2d& a, const Packet2d& b) { return _mm_or_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i por(const Packet4i& a, const Packet4i& b) { return _mm_or_si128(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f pxor(const Packet4f& a, const Packet4f& b) { return _mm_xor_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pxor(const Packet2d& a, const Packet2d& b) { return _mm_xor_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pxor(const Packet4i& a, const Packet4i& b) { return _mm_xor_si128(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f pandnot(const Packet4f& a, const Packet4f& b) { return _mm_andnot_ps(a,b); } +template<> EIGEN_STRONG_INLINE Packet2d pandnot(const Packet2d& a, const Packet2d& b) { return _mm_andnot_pd(a,b); } +template<> EIGEN_STRONG_INLINE Packet4i pandnot(const Packet4i& a, const Packet4i& b) { return _mm_andnot_si128(a,b); } + +template<> EIGEN_STRONG_INLINE Packet4f pload(const float* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm_load_ps(from); } +template<> EIGEN_STRONG_INLINE Packet2d pload(const double* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm_load_pd(from); } +template<> EIGEN_STRONG_INLINE Packet4i pload(const int* from) { EIGEN_DEBUG_ALIGNED_LOAD return _mm_load_si128(reinterpret_cast(from)); } + +#if defined(_MSC_VER) + template<> EIGEN_STRONG_INLINE Packet4f ploadu(const float* from) { + EIGEN_DEBUG_UNALIGNED_LOAD + #if (_MSC_VER==1600) + // NOTE Some version of MSVC10 generates bad code when using _mm_loadu_ps + // (i.e., it does not generate an unaligned load!! + // TODO On most architectures this version should also be faster than a single _mm_loadu_ps + // so we could also enable it for MSVC08 but first we have to make this later does not generate crap when doing so... + __m128 res = _mm_loadl_pi(_mm_set1_ps(0.0f), (const __m64*)(from)); + res = _mm_loadh_pi(res, (const __m64*)(from+2)); + return res; + #else + return _mm_loadu_ps(from); + #endif + } + template<> EIGEN_STRONG_INLINE Packet2d ploadu(const double* from) { EIGEN_DEBUG_UNALIGNED_LOAD return _mm_loadu_pd(from); } + template<> EIGEN_STRONG_INLINE Packet4i ploadu(const int* from) { EIGEN_DEBUG_UNALIGNED_LOAD return _mm_loadu_si128(reinterpret_cast(from)); } +#else +// Fast unaligned loads. Note that here we cannot directly use intrinsics: this would +// require pointer casting to incompatible pointer types and leads to invalid code +// because of the strict aliasing rule. The "dummy" stuff are required to enforce +// a correct instruction dependency. +// TODO: do the same for MSVC (ICC is compatible) +// NOTE: with the code below, MSVC's compiler crashes! + +#if defined(__GNUC__) && defined(__i386__) + // bug 195: gcc/i386 emits weird x87 fldl/fstpl instructions for _mm_load_sd + #define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 1 +#elif defined(__clang__) + // bug 201: Segfaults in __mm_loadh_pd with clang 2.8 + #define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 1 +#else + #define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 0 +#endif + +template<> EIGEN_STRONG_INLINE Packet4f ploadu(const float* from) +{ + EIGEN_DEBUG_UNALIGNED_LOAD +#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS + return _mm_loadu_ps(from); +#else + __m128d res; + res = _mm_load_sd((const double*)(from)) ; + res = _mm_loadh_pd(res, (const double*)(from+2)) ; + return _mm_castpd_ps(res); +#endif +} +template<> EIGEN_STRONG_INLINE Packet2d ploadu(const double* from) +{ + EIGEN_DEBUG_UNALIGNED_LOAD +#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS + return _mm_loadu_pd(from); +#else + __m128d res; + res = _mm_load_sd(from) ; + res = _mm_loadh_pd(res,from+1); + return res; +#endif +} +template<> EIGEN_STRONG_INLINE Packet4i ploadu(const int* from) +{ + EIGEN_DEBUG_UNALIGNED_LOAD +#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS + return _mm_loadu_si128(reinterpret_cast(from)); +#else + __m128d res; + res = _mm_load_sd((const double*)(from)) ; + res = _mm_loadh_pd(res, (const double*)(from+2)) ; + return _mm_castpd_si128(res); +#endif +} +#endif + +template<> EIGEN_STRONG_INLINE Packet4f ploaddup(const float* from) +{ + return vec4f_swizzle1(_mm_castpd_ps(_mm_load_sd((const double*)from)), 0, 0, 1, 1); +} +template<> EIGEN_STRONG_INLINE Packet2d ploaddup(const double* from) +{ return pset1(from[0]); } +template<> EIGEN_STRONG_INLINE Packet4i ploaddup(const int* from) +{ + Packet4i tmp; + tmp = _mm_loadl_epi64(reinterpret_cast(from)); + return vec4i_swizzle1(tmp, 0, 0, 1, 1); +} + +template<> EIGEN_STRONG_INLINE void pstore(float* to, const Packet4f& from) { EIGEN_DEBUG_ALIGNED_STORE _mm_store_ps(to, from); } +template<> EIGEN_STRONG_INLINE void pstore(double* to, const Packet2d& from) { EIGEN_DEBUG_ALIGNED_STORE _mm_store_pd(to, from); } +template<> EIGEN_STRONG_INLINE void pstore(int* to, const Packet4i& from) { EIGEN_DEBUG_ALIGNED_STORE _mm_store_si128(reinterpret_cast(to), from); } + +template<> EIGEN_STRONG_INLINE void pstoreu(double* to, const Packet2d& from) { + EIGEN_DEBUG_UNALIGNED_STORE + _mm_storel_pd((to), from); + _mm_storeh_pd((to+1), from); +} +template<> EIGEN_STRONG_INLINE void pstoreu(float* to, const Packet4f& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu((double*)to, _mm_castps_pd(from)); } +template<> EIGEN_STRONG_INLINE void pstoreu(int* to, const Packet4i& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu((double*)to, _mm_castsi128_pd(from)); } + +// some compilers might be tempted to perform multiple moves instead of using a vector path. +template<> EIGEN_STRONG_INLINE void pstore1(float* to, const float& a) +{ + Packet4f pa = _mm_set_ss(a); + pstore(to, vec4f_swizzle1(pa,0,0,0,0)); +} +// some compilers might be tempted to perform multiple moves instead of using a vector path. +template<> EIGEN_STRONG_INLINE void pstore1(double* to, const double& a) +{ + Packet2d pa = _mm_set_sd(a); + pstore(to, vec2d_swizzle1(pa,0,0)); +} + +template<> EIGEN_STRONG_INLINE void prefetch(const float* addr) { _mm_prefetch((const char*)(addr), _MM_HINT_T0); } +template<> EIGEN_STRONG_INLINE void prefetch(const double* addr) { _mm_prefetch((const char*)(addr), _MM_HINT_T0); } +template<> EIGEN_STRONG_INLINE void prefetch(const int* addr) { _mm_prefetch((const char*)(addr), _MM_HINT_T0); } + +#if defined(_MSC_VER) && defined(_WIN64) && !defined(__INTEL_COMPILER) +// The temporary variable fixes an internal compilation error in vs <= 2008 and a wrong-result bug in vs 2010 +// Direct of the struct members fixed bug #62. +template<> EIGEN_STRONG_INLINE float pfirst(const Packet4f& a) { return a.m128_f32[0]; } +template<> EIGEN_STRONG_INLINE double pfirst(const Packet2d& a) { return a.m128d_f64[0]; } +template<> EIGEN_STRONG_INLINE int pfirst(const Packet4i& a) { int x = _mm_cvtsi128_si32(a); return x; } +#elif defined(_MSC_VER) && !defined(__INTEL_COMPILER) +// The temporary variable fixes an internal compilation error in vs <= 2008 and a wrong-result bug in vs 2010 +template<> EIGEN_STRONG_INLINE float pfirst(const Packet4f& a) { float x = _mm_cvtss_f32(a); return x; } +template<> EIGEN_STRONG_INLINE double pfirst(const Packet2d& a) { double x = _mm_cvtsd_f64(a); return x; } +template<> EIGEN_STRONG_INLINE int pfirst(const Packet4i& a) { int x = _mm_cvtsi128_si32(a); return x; } +#else +template<> EIGEN_STRONG_INLINE float pfirst(const Packet4f& a) { return _mm_cvtss_f32(a); } +template<> EIGEN_STRONG_INLINE double pfirst(const Packet2d& a) { return _mm_cvtsd_f64(a); } +template<> EIGEN_STRONG_INLINE int pfirst(const Packet4i& a) { return _mm_cvtsi128_si32(a); } +#endif + +template<> EIGEN_STRONG_INLINE Packet4f preverse(const Packet4f& a) +{ return _mm_shuffle_ps(a,a,0x1B); } +template<> EIGEN_STRONG_INLINE Packet2d preverse(const Packet2d& a) +{ return _mm_shuffle_pd(a,a,0x1); } +template<> EIGEN_STRONG_INLINE Packet4i preverse(const Packet4i& a) +{ return _mm_shuffle_epi32(a,0x1B); } + + +template<> EIGEN_STRONG_INLINE Packet4f pabs(const Packet4f& a) +{ + const Packet4f mask = _mm_castsi128_ps(_mm_setr_epi32(0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF,0x7FFFFFFF)); + return _mm_and_ps(a,mask); +} +template<> EIGEN_STRONG_INLINE Packet2d pabs(const Packet2d& a) +{ + const Packet2d mask = _mm_castsi128_pd(_mm_setr_epi32(0xFFFFFFFF,0x7FFFFFFF,0xFFFFFFFF,0x7FFFFFFF)); + return _mm_and_pd(a,mask); +} +template<> EIGEN_STRONG_INLINE Packet4i pabs(const Packet4i& a) +{ + #ifdef EIGEN_VECTORIZE_SSSE3 + return _mm_abs_epi32(a); + #else + Packet4i aux = _mm_srai_epi32(a,31); + return _mm_sub_epi32(_mm_xor_si128(a,aux),aux); + #endif +} + +EIGEN_STRONG_INLINE void punpackp(Packet4f* vecs) +{ + vecs[1] = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(vecs[0]), 0x55)); + vecs[2] = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(vecs[0]), 0xAA)); + vecs[3] = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(vecs[0]), 0xFF)); + vecs[0] = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(vecs[0]), 0x00)); +} + +#ifdef EIGEN_VECTORIZE_SSE3 +// TODO implement SSE2 versions as well as integer versions +template<> EIGEN_STRONG_INLINE Packet4f preduxp(const Packet4f* vecs) +{ + return _mm_hadd_ps(_mm_hadd_ps(vecs[0], vecs[1]),_mm_hadd_ps(vecs[2], vecs[3])); +} +template<> EIGEN_STRONG_INLINE Packet2d preduxp(const Packet2d* vecs) +{ + return _mm_hadd_pd(vecs[0], vecs[1]); +} +// SSSE3 version: +// EIGEN_STRONG_INLINE Packet4i preduxp(const Packet4i* vecs) +// { +// return _mm_hadd_epi32(_mm_hadd_epi32(vecs[0], vecs[1]),_mm_hadd_epi32(vecs[2], vecs[3])); +// } + +template<> EIGEN_STRONG_INLINE float predux(const Packet4f& a) +{ + Packet4f tmp0 = _mm_hadd_ps(a,a); + return pfirst(_mm_hadd_ps(tmp0, tmp0)); +} + +template<> EIGEN_STRONG_INLINE double predux(const Packet2d& a) { return pfirst(_mm_hadd_pd(a, a)); } + +// SSSE3 version: +// EIGEN_STRONG_INLINE float predux(const Packet4i& a) +// { +// Packet4i tmp0 = _mm_hadd_epi32(a,a); +// return pfirst(_mm_hadd_epi32(tmp0, tmp0)); +// } +#else +// SSE2 versions +template<> EIGEN_STRONG_INLINE float predux(const Packet4f& a) +{ + Packet4f tmp = _mm_add_ps(a, _mm_movehl_ps(a,a)); + return pfirst(_mm_add_ss(tmp, _mm_shuffle_ps(tmp,tmp, 1))); +} +template<> EIGEN_STRONG_INLINE double predux(const Packet2d& a) +{ + return pfirst(_mm_add_sd(a, _mm_unpackhi_pd(a,a))); +} + +template<> EIGEN_STRONG_INLINE Packet4f preduxp(const Packet4f* vecs) +{ + Packet4f tmp0, tmp1, tmp2; + tmp0 = _mm_unpacklo_ps(vecs[0], vecs[1]); + tmp1 = _mm_unpackhi_ps(vecs[0], vecs[1]); + tmp2 = _mm_unpackhi_ps(vecs[2], vecs[3]); + tmp0 = _mm_add_ps(tmp0, tmp1); + tmp1 = _mm_unpacklo_ps(vecs[2], vecs[3]); + tmp1 = _mm_add_ps(tmp1, tmp2); + tmp2 = _mm_movehl_ps(tmp1, tmp0); + tmp0 = _mm_movelh_ps(tmp0, tmp1); + return _mm_add_ps(tmp0, tmp2); +} + +template<> EIGEN_STRONG_INLINE Packet2d preduxp(const Packet2d* vecs) +{ + return _mm_add_pd(_mm_unpacklo_pd(vecs[0], vecs[1]), _mm_unpackhi_pd(vecs[0], vecs[1])); +} +#endif // SSE3 + +template<> EIGEN_STRONG_INLINE int predux(const Packet4i& a) +{ + Packet4i tmp = _mm_add_epi32(a, _mm_unpackhi_epi64(a,a)); + return pfirst(tmp) + pfirst(_mm_shuffle_epi32(tmp, 1)); +} + +template<> EIGEN_STRONG_INLINE Packet4i preduxp(const Packet4i* vecs) +{ + Packet4i tmp0, tmp1, tmp2; + tmp0 = _mm_unpacklo_epi32(vecs[0], vecs[1]); + tmp1 = _mm_unpackhi_epi32(vecs[0], vecs[1]); + tmp2 = _mm_unpackhi_epi32(vecs[2], vecs[3]); + tmp0 = _mm_add_epi32(tmp0, tmp1); + tmp1 = _mm_unpacklo_epi32(vecs[2], vecs[3]); + tmp1 = _mm_add_epi32(tmp1, tmp2); + tmp2 = _mm_unpacklo_epi64(tmp0, tmp1); + tmp0 = _mm_unpackhi_epi64(tmp0, tmp1); + return _mm_add_epi32(tmp0, tmp2); +} + +// Other reduction functions: + +// mul +template<> EIGEN_STRONG_INLINE float predux_mul(const Packet4f& a) +{ + Packet4f tmp = _mm_mul_ps(a, _mm_movehl_ps(a,a)); + return pfirst(_mm_mul_ss(tmp, _mm_shuffle_ps(tmp,tmp, 1))); +} +template<> EIGEN_STRONG_INLINE double predux_mul(const Packet2d& a) +{ + return pfirst(_mm_mul_sd(a, _mm_unpackhi_pd(a,a))); +} +template<> EIGEN_STRONG_INLINE int predux_mul(const Packet4i& a) +{ + // after some experiments, it is seems this is the fastest way to implement it + // for GCC (eg., reusing pmul is very slow !) + // TODO try to call _mm_mul_epu32 directly + EIGEN_ALIGN16 int aux[4]; + pstore(aux, a); + return (aux[0] * aux[1]) * (aux[2] * aux[3]);; +} + +// min +template<> EIGEN_STRONG_INLINE float predux_min(const Packet4f& a) +{ + Packet4f tmp = _mm_min_ps(a, _mm_movehl_ps(a,a)); + return pfirst(_mm_min_ss(tmp, _mm_shuffle_ps(tmp,tmp, 1))); +} +template<> EIGEN_STRONG_INLINE double predux_min(const Packet2d& a) +{ + return pfirst(_mm_min_sd(a, _mm_unpackhi_pd(a,a))); +} +template<> EIGEN_STRONG_INLINE int predux_min(const Packet4i& a) +{ + // after some experiments, it is seems this is the fastest way to implement it + // for GCC (eg., it does not like using std::min after the pstore !!) + EIGEN_ALIGN16 int aux[4]; + pstore(aux, a); + register int aux0 = aux[0] EIGEN_STRONG_INLINE float predux_max(const Packet4f& a) +{ + Packet4f tmp = _mm_max_ps(a, _mm_movehl_ps(a,a)); + return pfirst(_mm_max_ss(tmp, _mm_shuffle_ps(tmp,tmp, 1))); +} +template<> EIGEN_STRONG_INLINE double predux_max(const Packet2d& a) +{ + return pfirst(_mm_max_sd(a, _mm_unpackhi_pd(a,a))); +} +template<> EIGEN_STRONG_INLINE int predux_max(const Packet4i& a) +{ + // after some experiments, it is seems this is the fastest way to implement it + // for GCC (eg., it does not like using std::min after the pstore !!) + EIGEN_ALIGN16 int aux[4]; + pstore(aux, a); + register int aux0 = aux[0]>aux[1] ? aux[0] : aux[1]; + register int aux2 = aux[2]>aux[3] ? aux[2] : aux[3]; + return aux0>aux2 ? aux0 : aux2; +} + +#if (defined __GNUC__) +// template <> EIGEN_STRONG_INLINE Packet4f pmadd(const Packet4f& a, const Packet4f& b, const Packet4f& c) +// { +// Packet4f res = b; +// asm("mulps %[a], %[b] \n\taddps %[c], %[b]" : [b] "+x" (res) : [a] "x" (a), [c] "x" (c)); +// return res; +// } +// EIGEN_STRONG_INLINE Packet4i _mm_alignr_epi8(const Packet4i& a, const Packet4i& b, const int i) +// { +// Packet4i res = a; +// asm("palignr %[i], %[a], %[b] " : [b] "+x" (res) : [a] "x" (a), [i] "i" (i)); +// return res; +// } +#endif + +#ifdef EIGEN_VECTORIZE_SSSE3 +// SSSE3 versions +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet4f& first, const Packet4f& second) + { + if (Offset!=0) + first = _mm_castsi128_ps(_mm_alignr_epi8(_mm_castps_si128(second), _mm_castps_si128(first), Offset*4)); + } +}; + +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet4i& first, const Packet4i& second) + { + if (Offset!=0) + first = _mm_alignr_epi8(second,first, Offset*4); + } +}; + +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet2d& first, const Packet2d& second) + { + if (Offset==1) + first = _mm_castsi128_pd(_mm_alignr_epi8(_mm_castpd_si128(second), _mm_castpd_si128(first), 8)); + } +}; +#else +// SSE2 versions +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet4f& first, const Packet4f& second) + { + if (Offset==1) + { + first = _mm_move_ss(first,second); + first = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(first),0x39)); + } + else if (Offset==2) + { + first = _mm_movehl_ps(first,first); + first = _mm_movelh_ps(first,second); + } + else if (Offset==3) + { + first = _mm_move_ss(first,second); + first = _mm_shuffle_ps(first,second,0x93); + } + } +}; + +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet4i& first, const Packet4i& second) + { + if (Offset==1) + { + first = _mm_castps_si128(_mm_move_ss(_mm_castsi128_ps(first),_mm_castsi128_ps(second))); + first = _mm_shuffle_epi32(first,0x39); + } + else if (Offset==2) + { + first = _mm_castps_si128(_mm_movehl_ps(_mm_castsi128_ps(first),_mm_castsi128_ps(first))); + first = _mm_castps_si128(_mm_movelh_ps(_mm_castsi128_ps(first),_mm_castsi128_ps(second))); + } + else if (Offset==3) + { + first = _mm_castps_si128(_mm_move_ss(_mm_castsi128_ps(first),_mm_castsi128_ps(second))); + first = _mm_castps_si128(_mm_shuffle_ps(_mm_castsi128_ps(first),_mm_castsi128_ps(second),0x93)); + } + } +}; + +template +struct palign_impl +{ + EIGEN_STRONG_INLINE static void run(Packet2d& first, const Packet2d& second) + { + if (Offset==1) + { + first = _mm_castps_pd(_mm_movehl_ps(_mm_castpd_ps(first),_mm_castpd_ps(first))); + first = _mm_castps_pd(_mm_movelh_ps(_mm_castpd_ps(first),_mm_castpd_ps(second))); + } + } +}; +#endif + +} // end namespace internal + +#endif // EIGEN_PACKET_MATH_SSE_H -- cgit v1.2.3