diff options
Diffstat (limited to 'Eigen/src/Core/PacketMath.h')
| -rw-r--r-- | Eigen/src/Core/PacketMath.h | 205 |
1 files changed, 20 insertions, 185 deletions
diff --git a/Eigen/src/Core/PacketMath.h b/Eigen/src/Core/PacketMath.h index cfa19eb6a..59c143ede 100644 --- a/Eigen/src/Core/PacketMath.h +++ b/Eigen/src/Core/PacketMath.h @@ -26,7 +26,7 @@ #define EIGEN_PACKET_MATH_H #ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 16 +#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 16 #endif // Default implementation for types not supported by the vectorization. @@ -35,211 +35,46 @@ // called, TODO so sould we raise an assertion or not ? /** \internal \returns a + b (coeff-wise) */ template <typename Scalar> inline Scalar ei_padd(const Scalar& a, const Scalar& b) { return a + b; } + /** \internal \returns a - b (coeff-wise) */ template <typename Scalar> inline Scalar ei_psub(const Scalar& a, const Scalar& b) { return a - b; } + /** \internal \returns a * b (coeff-wise) */ template <typename Scalar> inline Scalar ei_pmul(const Scalar& a, const Scalar& b) { return a * b; } + /** \internal \returns a * b - c (coeff-wise) */ template <typename Scalar> inline Scalar ei_pmadd(const Scalar& a, const Scalar& b, const Scalar& c) { return ei_padd(ei_pmul(a, b),c); } + /** \internal \returns the min of \a a and \a b (coeff-wise) */ template <typename Scalar> inline Scalar ei_pmin(const Scalar& a, const Scalar& b) { return std::min(a,b); } + /** \internal \returns the max of \a a and \a b (coeff-wise) */ template <typename Scalar> inline Scalar ei_pmax(const Scalar& a, const Scalar& b) { return std::max(a,b); } + /** \internal \returns a packet version of \a *from, from must be 16 bytes aligned */ template <typename Scalar> inline Scalar ei_pload(const Scalar* from) { return *from; } + +/** \internal \returns a packet version of \a *from, (un-aligned load) */ +template <typename Scalar> inline Scalar ei_ploadu(const Scalar* from) { return *from; } + /** \internal \returns a packet with constant coefficients \a a, e.g.: (a,a,a,a) */ template <typename Scalar> inline Scalar ei_pset1(const Scalar& a) { return a; } + /** \internal copy the packet \a from to \a *to, \a to must be 16 bytes aligned */ template <typename Scalar> inline void ei_pstore(Scalar* to, const Scalar& from) { (*to) = from; } -/** \internal \returns the first element of a packet */ -template <typename Scalar> inline Scalar ei_pfirst(const Scalar& a) { return a; } -/** \internal \returns a packet where the element i contains the sum of the packet of \a vec[i] */ -template <typename Scalar> inline Scalar ei_predux(const Scalar vecs[1]) { return vecs[0]; } -/** \internal \returns the sum of the elements of \a a*/ -template <typename Scalar> inline Scalar ei_predux(const Scalar& a) { return a; } - -#ifdef EIGEN_VECTORIZE_SSE - -#ifdef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#undef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 16 -#endif -template<> struct ei_packet_traits<float> { typedef __m128 type; enum {size=4}; }; -template<> struct ei_packet_traits<double> { typedef __m128d type; enum {size=2}; }; -template<> struct ei_packet_traits<int> { typedef __m128i type; enum {size=4}; }; - -template<> inline __m128 ei_padd(const __m128& a, const __m128& b) { return _mm_add_ps(a,b); } -template<> inline __m128d ei_padd(const __m128d& a, const __m128d& b) { return _mm_add_pd(a,b); } -template<> inline __m128i ei_padd(const __m128i& a, const __m128i& b) { return _mm_add_epi32(a,b); } - -template<> inline __m128 ei_psub(const __m128& a, const __m128& b) { return _mm_sub_ps(a,b); } -template<> inline __m128d ei_psub(const __m128d& a, const __m128d& b) { return _mm_sub_pd(a,b); } -template<> inline __m128i ei_psub(const __m128i& a, const __m128i& b) { return _mm_sub_epi32(a,b); } - -template<> inline __m128 ei_pmul(const __m128& a, const __m128& b) { return _mm_mul_ps(a,b); } -template<> inline __m128d ei_pmul(const __m128d& a, const __m128d& b) { return _mm_mul_pd(a,b); } -template<> inline __m128i ei_pmul(const __m128i& a, const __m128i& b) -{ - return _mm_or_si128( - _mm_and_si128( - _mm_mul_epu32(a,b), - _mm_setr_epi32(0xffffffff,0,0xffffffff,0)), - _mm_slli_si128( - _mm_and_si128( - _mm_mul_epu32(_mm_srli_si128(a,4),_mm_srli_si128(b,4)), - _mm_setr_epi32(0xffffffff,0,0xffffffff,0)), 4)); -} - -// for some weird raisons, it has to be overloaded for packet integer -template<> inline __m128i ei_pmadd(const __m128i& a, const __m128i& b, const __m128i& c) { return ei_padd(ei_pmul(a,b), c); } - -template<> inline __m128 ei_pmin(const __m128& a, const __m128& b) { return _mm_min_ps(a,b); } -template<> inline __m128d ei_pmin(const __m128d& a, const __m128d& b) { return _mm_min_pd(a,b); } -// FIXME this vectorized min operator is likely to be slower than the standard one -template<> inline __m128i ei_pmin(const __m128i& a, const __m128i& b) -{ - __m128i mask = _mm_cmplt_epi32(a,b); - return _mm_or_si128(_mm_and_si128(mask,a),_mm_andnot_si128(mask,b)); -} - -template<> inline __m128 ei_pmax(const __m128& a, const __m128& b) { return _mm_max_ps(a,b); } -template<> inline __m128d ei_pmax(const __m128d& a, const __m128d& b) { return _mm_max_pd(a,b); } -// FIXME this vectorized max operator is likely to be slower than the standard one -template<> inline __m128i ei_pmax(const __m128i& a, const __m128i& b) -{ - __m128i mask = _mm_cmpgt_epi32(a,b); - return _mm_or_si128(_mm_and_si128(mask,a),_mm_andnot_si128(mask,b)); -} - -inline __m128 ei_pload(const float* from) { return _mm_load_ps(from); } -inline __m128d ei_pload(const double* from) { return _mm_load_pd(from); } -inline __m128i ei_pload(const int* from) { return _mm_load_si128(reinterpret_cast<const __m128i*>(from)); } - -inline __m128 ei_ploadu(const float* from) { return _mm_loadu_ps(from); } -inline __m128d ei_ploadu(const double* from) { return _mm_loadu_pd(from); } -inline __m128i ei_ploadu(const int* from) { return _mm_loadu_si128(reinterpret_cast<const __m128i*>(from)); } - -inline __m128 ei_pset1(const float& from) { return _mm_set1_ps(from); } -inline __m128d ei_pset1(const double& from) { return _mm_set1_pd(from); } -inline __m128i ei_pset1(const int& from) { return _mm_set1_epi32(from); } - -inline void ei_pstore(float* to, const __m128& from) { _mm_store_ps(to, from); } -inline void ei_pstore(double* to, const __m128d& from) { _mm_store_pd(to, from); } -inline void ei_pstore(int* to, const __m128i& from) { _mm_store_si128(reinterpret_cast<__m128i*>(to), from); } - -inline void ei_pstoreu(float* to, const __m128& from) { _mm_storeu_ps(to, from); } -inline void ei_pstoreu(double* to, const __m128d& from) { _mm_storeu_pd(to, from); } -inline void ei_pstoreu(int* to, const __m128i& from) { _mm_store_si128(reinterpret_cast<__m128i*>(to), from); } - -inline float ei_pfirst(const __m128& a) { return _mm_cvtss_f32(a); } -inline double ei_pfirst(const __m128d& a) { return _mm_cvtsd_f64(a); } -inline int ei_pfirst(const __m128i& a) { return _mm_cvtsi128_si32(a); } - -#ifdef __SSE3__ -// TODO implement SSE2 versions as well as integer versions -inline __m128 ei_predux(const __m128* vecs) -{ - return _mm_hadd_ps(_mm_hadd_ps(vecs[0], vecs[1]),_mm_hadd_ps(vecs[2], vecs[3])); -} -inline __m128d ei_predux(const __m128d* vecs) -{ - return _mm_hadd_pd(vecs[0], vecs[1]); -} - -inline float ei_predux(const __m128& a) -{ - __m128 tmp0 = _mm_hadd_ps(a,a); - return ei_pfirst(_mm_hadd_ps(tmp0, tmp0)); -} - -inline double ei_predux(const __m128d& a) { return ei_pfirst(_mm_hadd_pd(a, a)); } -#endif +/** \internal copy the packet \a from to \a *to, (un-aligned store) */ +template <typename Scalar> inline void ei_pstoreu(Scalar* to, const Scalar& from) { (*to) = from; } -#elif defined(EIGEN_VECTORIZE_ALTIVEC) +/** \internal \returns the first element of a packet */ +template <typename Scalar> inline Scalar ei_pfirst(const Scalar& a) { return a; } -#ifdef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#undef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 4 -#endif +/** \internal \returns a packet where the element i contains the sum of the packet of \a vec[i] */ +// template <typename Scalar> inline Scalar ei_predux(const Scalar* vecs) { return vecs[0]; } -static const vector int v0i = vec_splat_u32(0); -static const vector int v16i_ = vec_splat_u32(-16); -static const vector float v0f = (vector float) v0i; - -template<> struct ei_packet_traits<float> { typedef vector float type; enum {size=4}; }; -template<> struct ei_packet_traits<int> { typedef vector int type; enum {size=4}; }; - -inline vector float ei_padd(const vector float a, const vector float b) { return vec_add(a,b); } -inline vector int ei_padd(const vector int a, const vector int b) { return vec_add(a,b); } - -inline vector float ei_psub(const vector float a, const vector float b) { return vec_sub(a,b); } -inline vector int ei_psub(const vector int a, const vector int b) { return vec_sub(a,b); } - -inline vector float ei_pmul(const vector float a, const vector float b) { return vec_madd(a,b, v0f); } -inline vector int ei_pmul(const vector int a, const vector int b) -{ - // Taken from http:// - - //Set up constants - vector int bswap, lowProduct, highProduct; - - //Do real work - bswap = vec_rl( (vector unsigned int)b, (vector unsigned int)v16i_ ); - lowProduct = vec_mulo( (vector short)a,(vector short)b ); - highProduct = vec_msum((vector short)a,(vector short)bswap, v0i); - highProduct = vec_sl( (vector unsigned int)highProduct, (vector unsigned int)v16i_ ); - return vec_add( lowProduct, highProduct ); -} - -inline vector float ei_pmadd(const vector float a, const vector float b, const vector float c) { return vec_madd(a, b, c); } - -inline vector float ei_pmin(const vector float a, const vector float b) { return vec_min(a,b); } -inline vector int ei_pmin(const vector int a, const vector int b) { return vec_min(a,b); } - -inline vector float ei_pmax(const vector float a, const vector float b) { return vec_max(a,b); } -inline vector int ei_pmax(const vector int a, const vector int b) { return vec_max(a,b); } - -inline vector float ei_pload(const float* from) { return vec_ld(0, from); } -inline vector int ei_pload(const int* from) { return vec_ld(0, from); } - -inline vector float ei_pset1(const float& from) -{ - static float __attribute__(aligned(16)) af[4]; - af[0] = from; - vector float vc = vec_ld(0, af); - vc = vec_splat(vc, 0); - return vc; -} - -inline vector int ei_pset1(const int& from) -{ - static int __attribute__(aligned(16)) ai[4]; - ai[0] = from; - vector int vc = vec_ld(0, ai); - vc = vec_splat(vc, 0); - return vc; -} - -inline void ei_pstore(float* to, const vector float from) { vec_st(from, 0, to); } -inline void ei_pstore(int* to, const vector int from) { vec_st(from, 0, to); } - -inline float ei_pfirst(const vector float a) -{ - static float __attribute__(aligned(16)) af[4]; - vec_st(a, 0, af); - return af[0]; -} - -inline int ei_pfirst(const vector int a) -{ - static int __attribute__(aligned(16)) ai[4]; - vec_st(a, 0, ai); - return ai[0]; -} - -#endif // EIGEN_VECTORIZE_ALTIVEC & SSE +/** \internal \returns the sum of the elements of \a a*/ +// template <typename Scalar> inline Scalar ei_predux(const Scalar& a) { return a; } #endif // EIGEN_PACKET_MATH_H |