| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2008-2016 Konstantinos Margaritis <markos@freevec.org> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla |
| // Public License v. 2.0. If a copy of the MPL was not distributed |
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| #ifndef EIGEN_PACKET_MATH_ALTIVEC_H |
| #define EIGEN_PACKET_MATH_ALTIVEC_H |
| |
| namespace Eigen { |
| |
| namespace internal { |
| |
| #ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD |
| #define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 4 |
| #endif |
| |
| #ifndef EIGEN_HAS_SINGLE_INSTRUCTION_MADD |
| #define EIGEN_HAS_SINGLE_INSTRUCTION_MADD |
| #endif |
| |
| #ifndef EIGEN_HAS_SINGLE_INSTRUCTION_CJMADD |
| #define EIGEN_HAS_SINGLE_INSTRUCTION_CJMADD |
| #endif |
| |
| // NOTE Altivec has 32 registers, but Eigen only accepts a value of 8 or 16 |
| #ifndef EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS |
| #define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS 32 |
| #endif |
| |
| typedef __vector float Packet4f; |
| typedef __vector int Packet4i; |
| typedef __vector unsigned int Packet4ui; |
| typedef __vector __bool int Packet4bi; |
| typedef __vector short int Packet8i; |
| typedef __vector unsigned char Packet16uc; |
| |
| // We don't want to write the same code all the time, but we need to reuse the constants |
| // and it doesn't really work to declare them global, so we define macros instead |
| |
| #define _EIGEN_DECLARE_CONST_FAST_Packet4f(NAME,X) \ |
| Packet4f p4f_##NAME = reinterpret_cast<Packet4f>(vec_splat_s32(X)) |
| |
| #define _EIGEN_DECLARE_CONST_FAST_Packet4i(NAME,X) \ |
| Packet4i p4i_##NAME = vec_splat_s32(X) |
| |
| #define _EIGEN_DECLARE_CONST_Packet4f(NAME,X) \ |
| Packet4f p4f_##NAME = pset1<Packet4f>(X) |
| |
| #define _EIGEN_DECLARE_CONST_Packet4i(NAME,X) \ |
| Packet4i p4i_##NAME = pset1<Packet4i>(X) |
| |
| #define _EIGEN_DECLARE_CONST_Packet2d(NAME,X) \ |
| Packet2d p2d_##NAME = pset1<Packet2d>(X) |
| |
| #define _EIGEN_DECLARE_CONST_Packet2l(NAME,X) \ |
| Packet2l p2l_##NAME = pset1<Packet2l>(X) |
| |
| #define _EIGEN_DECLARE_CONST_Packet4f_FROM_INT(NAME,X) \ |
| const Packet4f p4f_##NAME = reinterpret_cast<Packet4f>(pset1<Packet4i>(X)) |
| |
| #define DST_CHAN 1 |
| #define DST_CTRL(size, count, stride) (((size) << 24) | ((count) << 16) | (stride)) |
| |
| |
| // These constants are endian-agnostic |
| static _EIGEN_DECLARE_CONST_FAST_Packet4f(ZERO, 0); //{ 0.0, 0.0, 0.0, 0.0} |
| static _EIGEN_DECLARE_CONST_FAST_Packet4i(ZERO, 0); //{ 0, 0, 0, 0,} |
| static _EIGEN_DECLARE_CONST_FAST_Packet4i(ONE,1); //{ 1, 1, 1, 1} |
| static _EIGEN_DECLARE_CONST_FAST_Packet4i(MINUS16,-16); //{ -16, -16, -16, -16} |
| static _EIGEN_DECLARE_CONST_FAST_Packet4i(MINUS1,-1); //{ -1, -1, -1, -1} |
| static Packet4f p4f_MZERO = (Packet4f) vec_sl((Packet4ui)p4i_MINUS1, (Packet4ui)p4i_MINUS1); //{ 0x80000000, 0x80000000, 0x80000000, 0x80000000} |
| #ifndef __VSX__ |
| static Packet4f p4f_ONE = vec_ctf(p4i_ONE, 0); //{ 1.0, 1.0, 1.0, 1.0} |
| #endif |
| |
| static Packet4f p4f_COUNTDOWN = { 0.0, 1.0, 2.0, 3.0 }; |
| static Packet4i p4i_COUNTDOWN = { 0, 1, 2, 3 }; |
| |
| static Packet16uc p16uc_REVERSE32 = { 12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3 }; |
| static Packet16uc p16uc_DUPLICATE32_HI = { 0,1,2,3, 0,1,2,3, 4,5,6,7, 4,5,6,7 }; |
| |
| // Mask alignment |
| #ifdef __PPC64__ |
| #define _EIGEN_MASK_ALIGNMENT 0xfffffffffffffff0 |
| #else |
| #define _EIGEN_MASK_ALIGNMENT 0xfffffff0 |
| #endif |
| |
| #define _EIGEN_ALIGNED_PTR(x) ((std::ptrdiff_t)(x) & _EIGEN_MASK_ALIGNMENT) |
| |
| // Handle endianness properly while loading constants |
| // Define global static constants: |
| #ifdef _BIG_ENDIAN |
| static Packet16uc p16uc_FORWARD = vec_lvsl(0, (float*)0); |
| #ifdef __VSX__ |
| static Packet16uc p16uc_REVERSE64 = { 8,9,10,11, 12,13,14,15, 0,1,2,3, 4,5,6,7 }; |
| #endif |
| static Packet16uc p16uc_PSET32_WODD = vec_sld((Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 0), (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 2), 8);//{ 0,1,2,3, 0,1,2,3, 8,9,10,11, 8,9,10,11 }; |
| static Packet16uc p16uc_PSET32_WEVEN = vec_sld(p16uc_DUPLICATE32_HI, (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 3), 8);//{ 4,5,6,7, 4,5,6,7, 12,13,14,15, 12,13,14,15 }; |
| static Packet16uc p16uc_HALF64_0_16 = vec_sld((Packet16uc)p4i_ZERO, vec_splat((Packet16uc) vec_abs(p4i_MINUS16), 3), 8); //{ 0,0,0,0, 0,0,0,0, 16,16,16,16, 16,16,16,16}; |
| #else |
| static Packet16uc p16uc_FORWARD = p16uc_REVERSE32; |
| static Packet16uc p16uc_REVERSE64 = { 8,9,10,11, 12,13,14,15, 0,1,2,3, 4,5,6,7 }; |
| static Packet16uc p16uc_PSET32_WODD = vec_sld((Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 1), (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 3), 8);//{ 0,1,2,3, 0,1,2,3, 8,9,10,11, 8,9,10,11 }; |
| static Packet16uc p16uc_PSET32_WEVEN = vec_sld((Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 0), (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 2), 8);//{ 4,5,6,7, 4,5,6,7, 12,13,14,15, 12,13,14,15 }; |
| static Packet16uc p16uc_HALF64_0_16 = vec_sld(vec_splat((Packet16uc) vec_abs(p4i_MINUS16), 0), (Packet16uc)p4i_ZERO, 8); //{ 0,0,0,0, 0,0,0,0, 16,16,16,16, 16,16,16,16}; |
| #endif // _BIG_ENDIAN |
| |
| static Packet16uc p16uc_PSET64_HI = (Packet16uc) vec_mergeh((Packet4ui)p16uc_PSET32_WODD, (Packet4ui)p16uc_PSET32_WEVEN); //{ 0,1,2,3, 4,5,6,7, 0,1,2,3, 4,5,6,7 }; |
| static Packet16uc p16uc_PSET64_LO = (Packet16uc) vec_mergel((Packet4ui)p16uc_PSET32_WODD, (Packet4ui)p16uc_PSET32_WEVEN); //{ 8,9,10,11, 12,13,14,15, 8,9,10,11, 12,13,14,15 }; |
| static Packet16uc p16uc_TRANSPOSE64_HI = p16uc_PSET64_HI + p16uc_HALF64_0_16; //{ 0,1,2,3, 4,5,6,7, 16,17,18,19, 20,21,22,23}; |
| static Packet16uc p16uc_TRANSPOSE64_LO = p16uc_PSET64_LO + p16uc_HALF64_0_16; //{ 8,9,10,11, 12,13,14,15, 24,25,26,27, 28,29,30,31}; |
| |
| static Packet16uc p16uc_COMPLEX32_REV = vec_sld(p16uc_REVERSE32, p16uc_REVERSE32, 8); //{ 4,5,6,7, 0,1,2,3, 12,13,14,15, 8,9,10,11 }; |
| |
| #ifdef _BIG_ENDIAN |
| static Packet16uc p16uc_COMPLEX32_REV2 = vec_sld(p16uc_FORWARD, p16uc_FORWARD, 8); //{ 8,9,10,11, 12,13,14,15, 0,1,2,3, 4,5,6,7 }; |
| #else |
| static Packet16uc p16uc_COMPLEX32_REV2 = vec_sld(p16uc_PSET64_HI, p16uc_PSET64_LO, 8); //{ 8,9,10,11, 12,13,14,15, 0,1,2,3, 4,5,6,7 }; |
| #endif // _BIG_ENDIAN |
| |
| #if EIGEN_HAS_BUILTIN(__builtin_prefetch) || EIGEN_COMP_GNUC |
| #define EIGEN_PPC_PREFETCH(ADDR) __builtin_prefetch(ADDR); |
| #else |
| #define EIGEN_PPC_PREFETCH(ADDR) asm( " dcbt [%[addr]]\n" :: [addr] "r" (ADDR) : "cc" ); |
| #endif |
| |
| template<> struct packet_traits<float> : default_packet_traits |
| { |
| typedef Packet4f type; |
| typedef Packet4f half; |
| enum { |
| Vectorizable = 1, |
| AlignedOnScalar = 1, |
| size=4, |
| HasHalfPacket = 1, |
| |
| HasAdd = 1, |
| HasSub = 1, |
| HasMul = 1, |
| HasDiv = 1, |
| HasMin = 1, |
| HasMax = 1, |
| HasAbs = 1, |
| HasSin = EIGEN_FAST_MATH, |
| HasCos = EIGEN_FAST_MATH, |
| HasLog = 1, |
| HasExp = 1, |
| #ifdef __VSX__ |
| HasSqrt = 1, |
| #if !EIGEN_COMP_CLANG |
| HasRsqrt = 1, |
| #else |
| HasRsqrt = 0, |
| #endif |
| #else |
| HasSqrt = 0, |
| HasRsqrt = 0, |
| #endif |
| HasRound = 1, |
| HasFloor = 1, |
| HasCeil = 1, |
| HasNegate = 1, |
| HasBlend = 1 |
| }; |
| }; |
| template<> struct packet_traits<int> : default_packet_traits |
| { |
| typedef Packet4i type; |
| typedef Packet4i half; |
| enum { |
| Vectorizable = 1, |
| AlignedOnScalar = 1, |
| size = 4, |
| HasHalfPacket = 0, |
| |
| HasAdd = 1, |
| HasSub = 1, |
| HasMul = 1, |
| HasDiv = 0, |
| HasBlend = 1 |
| }; |
| }; |
| |
| |
| template<> struct unpacket_traits<Packet4f> |
| { |
| typedef float type; |
| typedef Packet4f half; |
| typedef Packet4i integer_packet; |
| enum {size=4, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false}; |
| }; |
| template<> struct unpacket_traits<Packet4i> |
| { |
| typedef int type; |
| typedef Packet4i half; |
| enum {size=4, alignment=Aligned16, vectorizable=false, masked_load_available=false, masked_store_available=false}; |
| }; |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet16uc & v) |
| { |
| union { |
| Packet16uc v; |
| unsigned char n[16]; |
| } vt; |
| vt.v = v; |
| for (int i=0; i< 16; i++) |
| s << (int)vt.n[i] << ", "; |
| return s; |
| } |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet4f & v) |
| { |
| union { |
| Packet4f v; |
| float n[4]; |
| } vt; |
| vt.v = v; |
| s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; |
| return s; |
| } |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet4i & v) |
| { |
| union { |
| Packet4i v; |
| int n[4]; |
| } vt; |
| vt.v = v; |
| s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; |
| return s; |
| } |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet4ui & v) |
| { |
| union { |
| Packet4ui v; |
| unsigned int n[4]; |
| } vt; |
| vt.v = v; |
| s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; |
| return s; |
| } |
| |
| // Need to define them first or we get specialization after instantiation errors |
| template<> EIGEN_STRONG_INLINE Packet4f pload<Packet4f>(const float* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| #ifdef __VSX__ |
| return vec_vsx_ld(0, from); |
| #else |
| return vec_ld(0, from); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i pload<Packet4i>(const int* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| #ifdef __VSX__ |
| return vec_vsx_ld(0, from); |
| #else |
| return vec_ld(0, from); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE void pstore<float>(float* to, const Packet4f& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| #ifdef __VSX__ |
| vec_vsx_st(from, 0, to); |
| #else |
| vec_st(from, 0, to); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE void pstore<int>(int* to, const Packet4i& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| #ifdef __VSX__ |
| vec_vsx_st(from, 0, to); |
| #else |
| vec_st(from, 0, to); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(const float& from) { |
| Packet4f v = {from, from, from, from}; |
| return v; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i pset1<Packet4i>(const int& from) { |
| Packet4i v = {from, from, from, from}; |
| return v; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pset1frombits<Packet4f>(unsigned int from) { |
| return reinterpret_cast<Packet4f>(pset1<Packet4i>(from)); |
| } |
| |
| template<> EIGEN_STRONG_INLINE void |
| pbroadcast4<Packet4f>(const float *a, |
| Packet4f& a0, Packet4f& a1, Packet4f& a2, Packet4f& a3) |
| { |
| a3 = pload<Packet4f>(a); |
| a0 = vec_splat(a3, 0); |
| a1 = vec_splat(a3, 1); |
| a2 = vec_splat(a3, 2); |
| a3 = vec_splat(a3, 3); |
| } |
| template<> EIGEN_STRONG_INLINE void |
| pbroadcast4<Packet4i>(const int *a, |
| Packet4i& a0, Packet4i& a1, Packet4i& a2, Packet4i& a3) |
| { |
| a3 = pload<Packet4i>(a); |
| a0 = vec_splat(a3, 0); |
| a1 = vec_splat(a3, 1); |
| a2 = vec_splat(a3, 2); |
| a3 = vec_splat(a3, 3); |
| } |
| |
| template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const float* from, Index stride) |
| { |
| EIGEN_ALIGN16 float af[4]; |
| af[0] = from[0*stride]; |
| af[1] = from[1*stride]; |
| af[2] = from[2*stride]; |
| af[3] = from[3*stride]; |
| return pload<Packet4f>(af); |
| } |
| template<> EIGEN_DEVICE_FUNC inline Packet4i pgather<int, Packet4i>(const int* from, Index stride) |
| { |
| EIGEN_ALIGN16 int ai[4]; |
| ai[0] = from[0*stride]; |
| ai[1] = from[1*stride]; |
| ai[2] = from[2*stride]; |
| ai[3] = from[3*stride]; |
| return pload<Packet4i>(ai); |
| } |
| template<> EIGEN_DEVICE_FUNC inline void pscatter<float, Packet4f>(float* to, const Packet4f& from, Index stride) |
| { |
| EIGEN_ALIGN16 float af[4]; |
| pstore<float>(af, from); |
| to[0*stride] = af[0]; |
| to[1*stride] = af[1]; |
| to[2*stride] = af[2]; |
| to[3*stride] = af[3]; |
| } |
| template<> EIGEN_DEVICE_FUNC inline void pscatter<int, Packet4i>(int* to, const Packet4i& from, Index stride) |
| { |
| EIGEN_ALIGN16 int ai[4]; |
| pstore<int>((int *)ai, from); |
| to[0*stride] = ai[0]; |
| to[1*stride] = ai[1]; |
| to[2*stride] = ai[2]; |
| to[3*stride] = ai[3]; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f plset<Packet4f>(const float& a) { return pset1<Packet4f>(a) + p4f_COUNTDOWN; } |
| template<> EIGEN_STRONG_INLINE Packet4i plset<Packet4i>(const int& a) { return pset1<Packet4i>(a) + p4i_COUNTDOWN; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f padd<Packet4f>(const Packet4f& a, const Packet4f& b) { return a + b; } |
| template<> EIGEN_STRONG_INLINE Packet4i padd<Packet4i>(const Packet4i& a, const Packet4i& b) { return a + b; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f psub<Packet4f>(const Packet4f& a, const Packet4f& b) { return a - b; } |
| template<> EIGEN_STRONG_INLINE Packet4i psub<Packet4i>(const Packet4i& a, const Packet4i& b) { return a - b; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pnegate(const Packet4f& a) { return p4f_ZERO - a; } |
| template<> EIGEN_STRONG_INLINE Packet4i pnegate(const Packet4i& a) { return p4i_ZERO - a; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pconj(const Packet4f& a) { return a; } |
| template<> EIGEN_STRONG_INLINE Packet4i pconj(const Packet4i& a) { return a; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pmul<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_madd(a,b, p4f_MZERO); } |
| template<> EIGEN_STRONG_INLINE Packet4i pmul<Packet4i>(const Packet4i& a, const Packet4i& b) { return a * b; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pdiv<Packet4f>(const Packet4f& a, const Packet4f& b) |
| { |
| #ifndef __VSX__ // VSX actually provides a div instruction |
| Packet4f t, y_0, y_1; |
| |
| // Altivec does not offer a divide instruction, we have to do a reciprocal approximation |
| y_0 = vec_re(b); |
| |
| // Do one Newton-Raphson iteration to get the needed accuracy |
| t = vec_nmsub(y_0, b, p4f_ONE); |
| y_1 = vec_madd(y_0, t, y_0); |
| |
| return vec_madd(a, y_1, p4f_MZERO); |
| #else |
| return vec_div(a, b); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i pdiv<Packet4i>(const Packet4i& /*a*/, const Packet4i& /*b*/) |
| { eigen_assert(false && "packet integer division are not supported by AltiVec"); |
| return pset1<Packet4i>(0); |
| } |
| |
| // for some weird raisons, it has to be overloaded for packet of integers |
| template<> EIGEN_STRONG_INLINE Packet4f pmadd(const Packet4f& a, const Packet4f& b, const Packet4f& c) { return vec_madd(a,b,c); } |
| template<> EIGEN_STRONG_INLINE Packet4i pmadd(const Packet4i& a, const Packet4i& b, const Packet4i& c) { return a*b + c; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pmin<Packet4f>(const Packet4f& a, const Packet4f& b) |
| { |
| #ifdef __VSX__ |
| // NOTE: about 10% slower than vec_min, but consistent with std::min and SSE regarding NaN |
| Packet4f ret; |
| __asm__ ("xvcmpgesp %x0,%x1,%x2\n\txxsel %x0,%x1,%x2,%x0" : "=&wa" (ret) : "wa" (a), "wa" (b)); |
| return ret; |
| #else |
| return vec_min(a, b); |
| #endif |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i pmin<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_min(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pmax<Packet4f>(const Packet4f& a, const Packet4f& b) |
| { |
| #ifdef __VSX__ |
| // NOTE: about 10% slower than vec_max, but consistent with std::max and SSE regarding NaN |
| Packet4f ret; |
| __asm__ ("xvcmpgtsp %x0,%x2,%x1\n\txxsel %x0,%x1,%x2,%x0" : "=&wa" (ret) : "wa" (a), "wa" (b)); |
| return ret; |
| #else |
| return vec_max(a, b); |
| #endif |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i pmax<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_max(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pcmp_le(const Packet4f& a, const Packet4f& b) { return reinterpret_cast<Packet4f>(vec_cmple(a,b)); } |
| template<> EIGEN_STRONG_INLINE Packet4f pcmp_lt(const Packet4f& a, const Packet4f& b) { return reinterpret_cast<Packet4f>(vec_cmplt(a,b)); } |
| template<> EIGEN_STRONG_INLINE Packet4f pcmp_eq(const Packet4f& a, const Packet4f& b) { return reinterpret_cast<Packet4f>(vec_cmpeq(a,b)); } |
| template<> EIGEN_STRONG_INLINE Packet4f pcmp_lt_or_nan(const Packet4f& a, const Packet4f& b) { |
| Packet4f c = reinterpret_cast<Packet4f>(vec_cmpge(a,b)); |
| return vec_nor(c,c); |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i pcmp_eq(const Packet4i& a, const Packet4i& b) { return reinterpret_cast<Packet4i>(vec_cmpeq(a,b)); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pand<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_and(a, b); } |
| template<> EIGEN_STRONG_INLINE Packet4i pand<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_and(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f por<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_or(a, b); } |
| template<> EIGEN_STRONG_INLINE Packet4i por<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_or(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pxor<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_xor(a, b); } |
| template<> EIGEN_STRONG_INLINE Packet4i pxor<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_xor(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pandnot<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_and(a, vec_nor(b, b)); } |
| template<> EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_and(a, vec_nor(b, b)); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pselect(const Packet4f& mask, const Packet4f& a, const Packet4f& b) { |
| return vec_sel(b, a, mask); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pround<Packet4f>(const Packet4f& a) { return vec_round(a); } |
| template<> EIGEN_STRONG_INLINE Packet4f pceil<Packet4f>(const Packet4f& a) { return vec_ceil(a); } |
| template<> EIGEN_STRONG_INLINE Packet4f pfloor<Packet4f>(const Packet4f& a) { return vec_floor(a); } |
| |
| #ifdef _BIG_ENDIAN |
| template<> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| Packet16uc MSQ, LSQ; |
| Packet16uc mask; |
| MSQ = vec_ld(0, (unsigned char *)from); // most significant quadword |
| LSQ = vec_ld(15, (unsigned char *)from); // least significant quadword |
| mask = vec_lvsl(0, from); // create the permute mask |
| return (Packet4f) vec_perm(MSQ, LSQ, mask); // align the data |
| |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(const int* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html |
| Packet16uc MSQ, LSQ; |
| Packet16uc mask; |
| MSQ = vec_ld(0, (unsigned char *)from); // most significant quadword |
| LSQ = vec_ld(15, (unsigned char *)from); // least significant quadword |
| mask = vec_lvsl(0, from); // create the permute mask |
| return (Packet4i) vec_perm(MSQ, LSQ, mask); // align the data |
| } |
| #else |
| // We also need to redefine little endian loading of Packet4i/Packet4f using VSX |
| template<> EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(const int* from) |
| { |
| EIGEN_DEBUG_UNALIGNED_LOAD |
| return (Packet4i) vec_vsx_ld((long)from & 15, (const int*) _EIGEN_ALIGNED_PTR(from)); |
| } |
| template<> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from) |
| { |
| EIGEN_DEBUG_UNALIGNED_LOAD |
| return (Packet4f) vec_vsx_ld((long)from & 15, (const float*) _EIGEN_ALIGNED_PTR(from)); |
| } |
| #endif |
| |
| template<> EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(const float* from) |
| { |
| Packet4f p; |
| if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet4f>(from); |
| else p = ploadu<Packet4f>(from); |
| return vec_perm(p, p, p16uc_DUPLICATE32_HI); |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i ploaddup<Packet4i>(const int* from) |
| { |
| Packet4i p; |
| if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet4i>(from); |
| else p = ploadu<Packet4i>(from); |
| return vec_perm(p, p, p16uc_DUPLICATE32_HI); |
| } |
| |
| #ifdef _BIG_ENDIAN |
| template<> EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet4f& from) |
| { |
| EIGEN_DEBUG_UNALIGNED_STORE |
| // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html |
| // Warning: not thread safe! |
| Packet16uc MSQ, LSQ, edges; |
| Packet16uc edgeAlign, align; |
| |
| MSQ = vec_ld(0, (unsigned char *)to); // most significant quadword |
| LSQ = vec_ld(15, (unsigned char *)to); // least significant quadword |
| edgeAlign = vec_lvsl(0, to); // permute map to extract edges |
| edges=vec_perm(LSQ,MSQ,edgeAlign); // extract the edges |
| align = vec_lvsr( 0, to ); // permute map to misalign data |
| MSQ = vec_perm(edges,(Packet16uc)from,align); // misalign the data (MSQ) |
| LSQ = vec_perm((Packet16uc)from,edges,align); // misalign the data (LSQ) |
| vec_st( LSQ, 15, (unsigned char *)to ); // Store the LSQ part first |
| vec_st( MSQ, 0, (unsigned char *)to ); // Store the MSQ part |
| } |
| template<> EIGEN_STRONG_INLINE void pstoreu<int>(int* to, const Packet4i& from) |
| { |
| EIGEN_DEBUG_UNALIGNED_STORE |
| // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html |
| // Warning: not thread safe! |
| Packet16uc MSQ, LSQ, edges; |
| Packet16uc edgeAlign, align; |
| |
| MSQ = vec_ld(0, (unsigned char *)to); // most significant quadword |
| LSQ = vec_ld(15, (unsigned char *)to); // least significant quadword |
| edgeAlign = vec_lvsl(0, to); // permute map to extract edges |
| edges=vec_perm(LSQ, MSQ, edgeAlign); // extract the edges |
| align = vec_lvsr( 0, to ); // permute map to misalign data |
| MSQ = vec_perm(edges, (Packet16uc) from, align); // misalign the data (MSQ) |
| LSQ = vec_perm((Packet16uc) from, edges, align); // misalign the data (LSQ) |
| vec_st( LSQ, 15, (unsigned char *)to ); // Store the LSQ part first |
| vec_st( MSQ, 0, (unsigned char *)to ); // Store the MSQ part |
| } |
| #else |
| // We also need to redefine little endian loading of Packet4i/Packet4f using VSX |
| template<> EIGEN_STRONG_INLINE void pstoreu<int>(int* to, const Packet4i& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| vec_vsx_st(from, (long)to & 15, (int*) _EIGEN_ALIGNED_PTR(to)); |
| } |
| template<> EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet4f& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| vec_vsx_st(from, (long)to & 15, (float*) _EIGEN_ALIGNED_PTR(to)); |
| } |
| #endif |
| |
| template<> EIGEN_STRONG_INLINE void prefetch<float>(const float* addr) { EIGEN_PPC_PREFETCH(addr); } |
| template<> EIGEN_STRONG_INLINE void prefetch<int>(const int* addr) { EIGEN_PPC_PREFETCH(addr); } |
| |
| template<> EIGEN_STRONG_INLINE float pfirst<Packet4f>(const Packet4f& a) { EIGEN_ALIGN16 float x; vec_ste(a, 0, &x); return x; } |
| template<> EIGEN_STRONG_INLINE int pfirst<Packet4i>(const Packet4i& a) { EIGEN_ALIGN16 int x; vec_ste(a, 0, &x); return x; } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f preverse(const Packet4f& a) |
| { |
| return reinterpret_cast<Packet4f>(vec_perm(reinterpret_cast<Packet16uc>(a), reinterpret_cast<Packet16uc>(a), p16uc_REVERSE32)); |
| } |
| template<> EIGEN_STRONG_INLINE Packet4i preverse(const Packet4i& a) |
| { |
| return reinterpret_cast<Packet4i>(vec_perm(reinterpret_cast<Packet16uc>(a), reinterpret_cast<Packet16uc>(a), p16uc_REVERSE32)); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pabs(const Packet4f& a) { return vec_abs(a); } |
| template<> EIGEN_STRONG_INLINE Packet4i pabs(const Packet4i& a) { return vec_abs(a); } |
| |
| template<int N> EIGEN_STRONG_INLINE Packet4i pshiftright(Packet4i a) |
| { return vec_sr(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); } |
| template<int N> EIGEN_STRONG_INLINE Packet4i pshiftleft(Packet4i a) |
| { return vec_sl(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pfrexp<Packet4f>(const Packet4f& a, Packet4f& exponent) { |
| return pfrexp_float(a,exponent); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pldexp<Packet4f>(const Packet4f& a, const Packet4f& exponent) { |
| return pldexp_float(a,exponent); |
| } |
| |
| template<> EIGEN_STRONG_INLINE float predux<Packet4f>(const Packet4f& a) |
| { |
| Packet4f b, sum; |
| b = vec_sld(a, a, 8); |
| sum = a + b; |
| b = vec_sld(sum, sum, 4); |
| sum += b; |
| return pfirst(sum); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f preduxp<Packet4f>(const Packet4f* vecs) |
| { |
| Packet4f v[4], sum[4]; |
| |
| // It's easier and faster to transpose then add as columns |
| // Check: http://www.freevec.org/function/matrix_4x4_transpose_floats for explanation |
| // Do the transpose, first set of moves |
| v[0] = vec_mergeh(vecs[0], vecs[2]); |
| v[1] = vec_mergel(vecs[0], vecs[2]); |
| v[2] = vec_mergeh(vecs[1], vecs[3]); |
| v[3] = vec_mergel(vecs[1], vecs[3]); |
| // Get the resulting vectors |
| sum[0] = vec_mergeh(v[0], v[2]); |
| sum[1] = vec_mergel(v[0], v[2]); |
| sum[2] = vec_mergeh(v[1], v[3]); |
| sum[3] = vec_mergel(v[1], v[3]); |
| |
| // Now do the summation: |
| // Lines 0+1 |
| sum[0] = sum[0] + sum[1]; |
| // Lines 2+3 |
| sum[1] = sum[2] + sum[3]; |
| // Add the results |
| sum[0] = sum[0] + sum[1]; |
| |
| return sum[0]; |
| } |
| |
| template<> EIGEN_STRONG_INLINE int predux<Packet4i>(const Packet4i& a) |
| { |
| Packet4i sum; |
| sum = vec_sums(a, p4i_ZERO); |
| #ifdef _BIG_ENDIAN |
| sum = vec_sld(sum, p4i_ZERO, 12); |
| #else |
| sum = vec_sld(p4i_ZERO, sum, 4); |
| #endif |
| return pfirst(sum); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i preduxp<Packet4i>(const Packet4i* vecs) |
| { |
| Packet4i v[4], sum[4]; |
| |
| // It's easier and faster to transpose then add as columns |
| // Check: http://www.freevec.org/function/matrix_4x4_transpose_floats for explanation |
| // Do the transpose, first set of moves |
| v[0] = vec_mergeh(vecs[0], vecs[2]); |
| v[1] = vec_mergel(vecs[0], vecs[2]); |
| v[2] = vec_mergeh(vecs[1], vecs[3]); |
| v[3] = vec_mergel(vecs[1], vecs[3]); |
| // Get the resulting vectors |
| sum[0] = vec_mergeh(v[0], v[2]); |
| sum[1] = vec_mergel(v[0], v[2]); |
| sum[2] = vec_mergeh(v[1], v[3]); |
| sum[3] = vec_mergel(v[1], v[3]); |
| |
| // Now do the summation: |
| // Lines 0+1 |
| sum[0] = sum[0] + sum[1]; |
| // Lines 2+3 |
| sum[1] = sum[2] + sum[3]; |
| // Add the results |
| sum[0] = sum[0] + sum[1]; |
| |
| return sum[0]; |
| } |
| |
| // Other reduction functions: |
| // mul |
| template<> EIGEN_STRONG_INLINE float predux_mul<Packet4f>(const Packet4f& a) |
| { |
| Packet4f prod; |
| prod = pmul(a, vec_sld(a, a, 8)); |
| return pfirst(pmul(prod, vec_sld(prod, prod, 4))); |
| } |
| |
| template<> EIGEN_STRONG_INLINE int predux_mul<Packet4i>(const Packet4i& a) |
| { |
| 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<Packet4f>(const Packet4f& a) |
| { |
| Packet4f b, res; |
| b = vec_min(a, vec_sld(a, a, 8)); |
| res = vec_min(b, vec_sld(b, b, 4)); |
| return pfirst(res); |
| } |
| |
| template<> EIGEN_STRONG_INLINE int predux_min<Packet4i>(const Packet4i& a) |
| { |
| Packet4i b, res; |
| b = vec_min(a, vec_sld(a, a, 8)); |
| res = vec_min(b, vec_sld(b, b, 4)); |
| return pfirst(res); |
| } |
| |
| // max |
| template<> EIGEN_STRONG_INLINE float predux_max<Packet4f>(const Packet4f& a) |
| { |
| Packet4f b, res; |
| b = vec_max(a, vec_sld(a, a, 8)); |
| res = vec_max(b, vec_sld(b, b, 4)); |
| return pfirst(res); |
| } |
| |
| template<> EIGEN_STRONG_INLINE int predux_max<Packet4i>(const Packet4i& a) |
| { |
| Packet4i b, res; |
| b = vec_max(a, vec_sld(a, a, 8)); |
| res = vec_max(b, vec_sld(b, b, 4)); |
| return pfirst(res); |
| } |
| |
| template<> EIGEN_STRONG_INLINE bool predux_any(const Packet4f& x) |
| { |
| return vec_any_ne(x, pzero(x)); |
| } |
| |
| template<int Offset> |
| struct palign_impl<Offset,Packet4f> |
| { |
| static EIGEN_STRONG_INLINE void run(Packet4f& first, const Packet4f& second) |
| { |
| #ifdef _BIG_ENDIAN |
| switch (Offset % 4) { |
| case 1: |
| first = vec_sld(first, second, 4); break; |
| case 2: |
| first = vec_sld(first, second, 8); break; |
| case 3: |
| first = vec_sld(first, second, 12); break; |
| } |
| #else |
| switch (Offset % 4) { |
| case 1: |
| first = vec_sld(second, first, 12); break; |
| case 2: |
| first = vec_sld(second, first, 8); break; |
| case 3: |
| first = vec_sld(second, first, 4); break; |
| } |
| #endif |
| } |
| }; |
| |
| template<int Offset> |
| struct palign_impl<Offset,Packet4i> |
| { |
| static EIGEN_STRONG_INLINE void run(Packet4i& first, const Packet4i& second) |
| { |
| #ifdef _BIG_ENDIAN |
| switch (Offset % 4) { |
| case 1: |
| first = vec_sld(first, second, 4); break; |
| case 2: |
| first = vec_sld(first, second, 8); break; |
| case 3: |
| first = vec_sld(first, second, 12); break; |
| } |
| #else |
| switch (Offset % 4) { |
| case 1: |
| first = vec_sld(second, first, 12); break; |
| case 2: |
| first = vec_sld(second, first, 8); break; |
| case 3: |
| first = vec_sld(second, first, 4); break; |
| } |
| #endif |
| } |
| }; |
| |
| EIGEN_DEVICE_FUNC inline void |
| ptranspose(PacketBlock<Packet4f,4>& kernel) { |
| Packet4f t0, t1, t2, t3; |
| t0 = vec_mergeh(kernel.packet[0], kernel.packet[2]); |
| t1 = vec_mergel(kernel.packet[0], kernel.packet[2]); |
| t2 = vec_mergeh(kernel.packet[1], kernel.packet[3]); |
| t3 = vec_mergel(kernel.packet[1], kernel.packet[3]); |
| kernel.packet[0] = vec_mergeh(t0, t2); |
| kernel.packet[1] = vec_mergel(t0, t2); |
| kernel.packet[2] = vec_mergeh(t1, t3); |
| kernel.packet[3] = vec_mergel(t1, t3); |
| } |
| |
| EIGEN_DEVICE_FUNC inline void |
| ptranspose(PacketBlock<Packet4i,4>& kernel) { |
| Packet4i t0, t1, t2, t3; |
| t0 = vec_mergeh(kernel.packet[0], kernel.packet[2]); |
| t1 = vec_mergel(kernel.packet[0], kernel.packet[2]); |
| t2 = vec_mergeh(kernel.packet[1], kernel.packet[3]); |
| t3 = vec_mergel(kernel.packet[1], kernel.packet[3]); |
| kernel.packet[0] = vec_mergeh(t0, t2); |
| kernel.packet[1] = vec_mergel(t0, t2); |
| kernel.packet[2] = vec_mergeh(t1, t3); |
| kernel.packet[3] = vec_mergel(t1, t3); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i pblend(const Selector<4>& ifPacket, const Packet4i& thenPacket, const Packet4i& elsePacket) { |
| Packet4ui select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3] }; |
| Packet4ui mask = reinterpret_cast<Packet4ui>(vec_cmpeq(reinterpret_cast<Packet4ui>(select), reinterpret_cast<Packet4ui>(p4i_ONE))); |
| return vec_sel(elsePacket, thenPacket, mask); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pblend(const Selector<4>& ifPacket, const Packet4f& thenPacket, const Packet4f& elsePacket) { |
| Packet4ui select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3] }; |
| Packet4ui mask = reinterpret_cast<Packet4ui>(vec_cmpeq(reinterpret_cast<Packet4ui>(select), reinterpret_cast<Packet4ui>(p4i_ONE))); |
| return vec_sel(elsePacket, thenPacket, mask); |
| } |
| |
| |
| template <> |
| struct type_casting_traits<float, int> { |
| enum { |
| VectorizedCast = 1, |
| SrcCoeffRatio = 1, |
| TgtCoeffRatio = 1 |
| }; |
| }; |
| |
| template <> |
| struct type_casting_traits<int, float> { |
| enum { |
| VectorizedCast = 1, |
| SrcCoeffRatio = 1, |
| TgtCoeffRatio = 1 |
| }; |
| }; |
| |
| |
| template<> EIGEN_STRONG_INLINE Packet4i pcast<Packet4f, Packet4i>(const Packet4f& a) { |
| return vec_cts(a,0); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f pcast<Packet4i, Packet4f>(const Packet4i& a) { |
| return vec_ctf(a,0); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4i preinterpret<Packet4i,Packet4f>(const Packet4f& a) { |
| return reinterpret_cast<Packet4i>(a); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet4f preinterpret<Packet4f,Packet4i>(const Packet4i& a) { |
| return reinterpret_cast<Packet4f>(a); |
| } |
| |
| |
| |
| //---------- double ---------- |
| #ifdef __VSX__ |
| typedef __vector double Packet2d; |
| typedef __vector unsigned long long Packet2ul; |
| typedef __vector long long Packet2l; |
| #if EIGEN_COMP_CLANG |
| typedef Packet2ul Packet2bl; |
| #else |
| typedef __vector __bool long Packet2bl; |
| #endif |
| |
| static Packet2l p2l_ONE = { 1, 1 }; |
| static Packet2l p2l_ZERO = reinterpret_cast<Packet2l>(p4i_ZERO); |
| static Packet2d p2d_ONE = { 1.0, 1.0 }; |
| static Packet2d p2d_ZERO = reinterpret_cast<Packet2d>(p4f_ZERO); |
| static Packet2d p2d_MZERO = { -0.0, -0.0 }; |
| |
| #ifdef _BIG_ENDIAN |
| static Packet2d p2d_COUNTDOWN = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(p2d_ZERO), reinterpret_cast<Packet4f>(p2d_ONE), 8)); |
| #else |
| static Packet2d p2d_COUNTDOWN = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(p2d_ONE), reinterpret_cast<Packet4f>(p2d_ZERO), 8)); |
| #endif |
| |
| template<int index> Packet2d vec_splat_dbl(Packet2d& a); |
| |
| template<> EIGEN_STRONG_INLINE Packet2d vec_splat_dbl<0>(Packet2d& a) |
| { |
| return reinterpret_cast<Packet2d>(vec_perm(a, a, p16uc_PSET64_HI)); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d vec_splat_dbl<1>(Packet2d& a) |
| { |
| return reinterpret_cast<Packet2d>(vec_perm(a, a, p16uc_PSET64_LO)); |
| } |
| |
| template<> struct packet_traits<double> : default_packet_traits |
| { |
| typedef Packet2d type; |
| typedef Packet2d half; |
| enum { |
| Vectorizable = 1, |
| AlignedOnScalar = 1, |
| size=2, |
| HasHalfPacket = 1, |
| |
| HasAdd = 1, |
| HasSub = 1, |
| HasMul = 1, |
| HasDiv = 1, |
| HasMin = 1, |
| HasMax = 1, |
| HasAbs = 1, |
| HasSin = 0, |
| HasCos = 0, |
| HasLog = 0, |
| HasExp = 1, |
| HasSqrt = 1, |
| HasRsqrt = 1, |
| HasRound = 1, |
| HasFloor = 1, |
| HasCeil = 1, |
| HasNegate = 1, |
| HasBlend = 1 |
| }; |
| }; |
| |
| template<> struct unpacket_traits<Packet2d> { typedef double type; enum {size=2, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false}; typedef Packet2d half; }; |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet2l & v) |
| { |
| union { |
| Packet2l v; |
| int64_t n[2]; |
| } vt; |
| vt.v = v; |
| s << vt.n[0] << ", " << vt.n[1]; |
| return s; |
| } |
| |
| inline std::ostream & operator <<(std::ostream & s, const Packet2d & v) |
| { |
| union { |
| Packet2d v; |
| double n[2]; |
| } vt; |
| vt.v = v; |
| s << vt.n[0] << ", " << vt.n[1]; |
| return s; |
| } |
| |
| // Need to define them first or we get specialization after instantiation errors |
| template<> EIGEN_STRONG_INLINE Packet2d pload<Packet2d>(const double* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| #ifdef __VSX__ |
| return vec_vsx_ld(0, from); |
| #else |
| return vec_ld(0, from); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE void pstore<double>(double* to, const Packet2d& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| #ifdef __VSX__ |
| vec_vsx_st(from, 0, to); |
| #else |
| vec_st(from, 0, to); |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pset1<Packet2d>(const double& from) { |
| Packet2d v = {from, from}; |
| return v; |
| } |
| |
| template<> EIGEN_STRONG_INLINE void |
| pbroadcast4<Packet2d>(const double *a, |
| Packet2d& a0, Packet2d& a1, Packet2d& a2, Packet2d& a3) |
| { |
| a1 = pload<Packet2d>(a); |
| a0 = vec_splat_dbl<0>(a1); |
| a1 = vec_splat_dbl<1>(a1); |
| a3 = pload<Packet2d>(a+2); |
| a2 = vec_splat_dbl<0>(a3); |
| a3 = vec_splat_dbl<1>(a3); |
| } |
| |
| template<> EIGEN_DEVICE_FUNC inline Packet2d pgather<double, Packet2d>(const double* from, Index stride) |
| { |
| EIGEN_ALIGN16 double af[2]; |
| af[0] = from[0*stride]; |
| af[1] = from[1*stride]; |
| return pload<Packet2d>(af); |
| } |
| template<> EIGEN_DEVICE_FUNC inline void pscatter<double, Packet2d>(double* to, const Packet2d& from, Index stride) |
| { |
| EIGEN_ALIGN16 double af[2]; |
| pstore<double>(af, from); |
| to[0*stride] = af[0]; |
| to[1*stride] = af[1]; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d plset<Packet2d>(const double& a) { return pset1<Packet2d>(a) + p2d_COUNTDOWN; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d padd<Packet2d>(const Packet2d& a, const Packet2d& b) { return a + b; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d psub<Packet2d>(const Packet2d& a, const Packet2d& b) { return a - b; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pnegate(const Packet2d& a) { return p2d_ZERO - a; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pconj(const Packet2d& a) { return a; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pmul<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_madd(a,b,p2d_MZERO); } |
| template<> EIGEN_STRONG_INLINE Packet2d pdiv<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_div(a,b); } |
| |
| // for some weird raisons, it has to be overloaded for packet of integers |
| template<> EIGEN_STRONG_INLINE Packet2d pmadd(const Packet2d& a, const Packet2d& b, const Packet2d& c) { return vec_madd(a, b, c); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pmin<Packet2d>(const Packet2d& a, const Packet2d& b) |
| { |
| // NOTE: about 10% slower than vec_min, but consistent with std::min and SSE regarding NaN |
| Packet2d ret; |
| __asm__ ("xvcmpgedp %x0,%x1,%x2\n\txxsel %x0,%x1,%x2,%x0" : "=&wa" (ret) : "wa" (a), "wa" (b)); |
| return ret; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pmax<Packet2d>(const Packet2d& a, const Packet2d& b) |
| { |
| // NOTE: about 10% slower than vec_max, but consistent with std::max and SSE regarding NaN |
| Packet2d ret; |
| __asm__ ("xvcmpgtdp %x0,%x2,%x1\n\txxsel %x0,%x1,%x2,%x0" : "=&wa" (ret) : "wa" (a), "wa" (b)); |
| return ret; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pand<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_and(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d por<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_or(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pxor<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_xor(a, b); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pandnot<Packet2d>(const Packet2d& a, const Packet2d& b) { return vec_and(a, vec_nor(b, b)); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pround<Packet2d>(const Packet2d& a) { return vec_round(a); } |
| template<> EIGEN_STRONG_INLINE Packet2d pceil<Packet2d>(const Packet2d& a) { return vec_ceil(a); } |
| template<> EIGEN_STRONG_INLINE Packet2d pfloor<Packet2d>(const Packet2d& a) { return vec_floor(a); } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d ploadu<Packet2d>(const double* from) |
| { |
| EIGEN_DEBUG_ALIGNED_LOAD |
| return (Packet2d) vec_vsx_ld((long)from & 15, (const double*) _EIGEN_ALIGNED_PTR(from)); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d ploaddup<Packet2d>(const double* from) |
| { |
| Packet2d p; |
| if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet2d>(from); |
| else p = ploadu<Packet2d>(from); |
| return vec_splat_dbl<0>(p); |
| } |
| |
| template<> EIGEN_STRONG_INLINE void pstoreu<double>(double* to, const Packet2d& from) |
| { |
| EIGEN_DEBUG_ALIGNED_STORE |
| vec_vsx_st((Packet4f)from, (long)to & 15, (float*) _EIGEN_ALIGNED_PTR(to)); |
| } |
| |
| template<> EIGEN_STRONG_INLINE void prefetch<double>(const double* addr) { EIGEN_PPC_PREFETCH(addr); } |
| |
| template<> EIGEN_STRONG_INLINE double pfirst<Packet2d>(const Packet2d& a) { EIGEN_ALIGN16 double x[2]; pstore<double>(x, a); return x[0]; } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d preverse(const Packet2d& a) |
| { |
| return reinterpret_cast<Packet2d>(vec_perm(reinterpret_cast<Packet16uc>(a), reinterpret_cast<Packet16uc>(a), p16uc_REVERSE64)); |
| } |
| template<> EIGEN_STRONG_INLINE Packet2d pabs(const Packet2d& a) { return vec_abs(a); } |
| |
| // VSX support varies between different compilers and even different |
| // versions of the same compiler. For gcc version >= 4.9.3, we can use |
| // vec_cts to efficiently convert Packet2d to Packet2l. Otherwise, use |
| // a slow version that works with older compilers. |
| // Update: apparently vec_cts/vec_ctf intrinsics for 64-bit doubles |
| // are buggy, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70963 |
| static inline Packet2l ConvertToPacket2l(const Packet2d& x) { |
| #if EIGEN_GNUC_AT_LEAST(5, 4) || \ |
| (EIGEN_GNUC_AT(6, 1) && __GNUC_PATCHLEVEL__ >= 1) |
| return vec_cts(x, 0); // TODO: check clang version. |
| #else |
| double tmp[2]; |
| memcpy(tmp, &x, sizeof(tmp)); |
| Packet2l l = { static_cast<long long>(tmp[0]), |
| static_cast<long long>(tmp[1]) }; |
| return l; |
| #endif |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pldexp<Packet2d>(const Packet2d& a, const Packet2d& exponent) { |
| |
| // build 2^n |
| Packet2l emm0 = ConvertToPacket2l(exponent); |
| |
| #ifdef __POWER8_VECTOR__ |
| const Packet2l p2l_1023 = { 1023, 1023 }; |
| const Packet2ul p2ul_52 = { 52, 52 }; |
| emm0 = vec_add(emm0, p2l_1023); |
| emm0 = vec_sl(emm0, p2ul_52); |
| #else |
| // Code is a bit complex for POWER7. There is actually a |
| // vec_xxsldi intrinsic but it is not supported by some gcc versions. |
| // So we shift (52-32) bits and do a word swap with zeros. |
| const Packet4i p4i_1023 = pset1<Packet4i>(1023); |
| const Packet4i p4i_20 = pset1<Packet4i>(20); // 52 - 32 |
| |
| Packet4i emm04i = reinterpret_cast<Packet4i>(emm0); |
| emm04i = vec_add(emm04i, p4i_1023); |
| emm04i = vec_sl(emm04i, reinterpret_cast<Packet4ui>(p4i_20)); |
| static const Packet16uc perm = { |
| 0x14, 0x15, 0x16, 0x17, 0x00, 0x01, 0x02, 0x03, |
| 0x1c, 0x1d, 0x1e, 0x1f, 0x08, 0x09, 0x0a, 0x0b }; |
| #ifdef _BIG_ENDIAN |
| emm0 = reinterpret_cast<Packet2l>(vec_perm(p4i_ZERO, emm04i, perm)); |
| #else |
| emm0 = reinterpret_cast<Packet2l>(vec_perm(emm04i, p4i_ZERO, perm)); |
| #endif |
| |
| #endif |
| |
| return pmul(a, reinterpret_cast<Packet2d>(emm0)); |
| } |
| |
| template<> EIGEN_STRONG_INLINE double predux<Packet2d>(const Packet2d& a) |
| { |
| Packet2d b, sum; |
| b = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(a), reinterpret_cast<Packet4f>(a), 8)); |
| sum = a + b; |
| return pfirst<Packet2d>(sum); |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d preduxp<Packet2d>(const Packet2d* vecs) |
| { |
| Packet2d v[2], sum; |
| v[0] = vecs[0] + reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(vecs[0]), reinterpret_cast<Packet4f>(vecs[0]), 8)); |
| v[1] = vecs[1] + reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(vecs[1]), reinterpret_cast<Packet4f>(vecs[1]), 8)); |
| |
| #ifdef _BIG_ENDIAN |
| sum = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(v[0]), reinterpret_cast<Packet4f>(v[1]), 8)); |
| #else |
| sum = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(v[1]), reinterpret_cast<Packet4f>(v[0]), 8)); |
| #endif |
| |
| return sum; |
| } |
| // Other reduction functions: |
| // mul |
| template<> EIGEN_STRONG_INLINE double predux_mul<Packet2d>(const Packet2d& a) |
| { |
| return pfirst(pmul(a, reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4ui>(a), reinterpret_cast<Packet4ui>(a), 8)))); |
| } |
| |
| // min |
| template<> EIGEN_STRONG_INLINE double predux_min<Packet2d>(const Packet2d& a) |
| { |
| return pfirst(pmin(a, reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4ui>(a), reinterpret_cast<Packet4ui>(a), 8)))); |
| } |
| |
| // max |
| template<> EIGEN_STRONG_INLINE double predux_max<Packet2d>(const Packet2d& a) |
| { |
| return pfirst(pmax(a, reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4ui>(a), reinterpret_cast<Packet4ui>(a), 8)))); |
| } |
| |
| template<int Offset> |
| struct palign_impl<Offset,Packet2d> |
| { |
| static EIGEN_STRONG_INLINE void run(Packet2d& first, const Packet2d& second) |
| { |
| if (Offset == 1) |
| #ifdef _BIG_ENDIAN |
| first = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4ui>(first), reinterpret_cast<Packet4ui>(second), 8)); |
| #else |
| first = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4ui>(second), reinterpret_cast<Packet4ui>(first), 8)); |
| #endif |
| } |
| }; |
| |
| EIGEN_DEVICE_FUNC inline void |
| ptranspose(PacketBlock<Packet2d,2>& kernel) { |
| Packet2d t0, t1; |
| t0 = vec_perm(kernel.packet[0], kernel.packet[1], p16uc_TRANSPOSE64_HI); |
| t1 = vec_perm(kernel.packet[0], kernel.packet[1], p16uc_TRANSPOSE64_LO); |
| kernel.packet[0] = t0; |
| kernel.packet[1] = t1; |
| } |
| |
| template<> EIGEN_STRONG_INLINE Packet2d pblend(const Selector<2>& ifPacket, const Packet2d& thenPacket, const Packet2d& elsePacket) { |
| Packet2l select = { ifPacket.select[0], ifPacket.select[1] }; |
| Packet2bl mask = reinterpret_cast<Packet2bl>( vec_cmpeq(reinterpret_cast<Packet2d>(select), reinterpret_cast<Packet2d>(p2l_ONE)) ); |
| return vec_sel(elsePacket, thenPacket, mask); |
| } |
| #endif // __VSX__ |
| } // end namespace internal |
| |
| } // end namespace Eigen |
| |
| #endif // EIGEN_PACKET_MATH_ALTIVEC_H |