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third-party-mirror / eigen / 8d2cb1a85d07eaff27321661524772e19aeb0e7c / . / Eigen / src / Core / arch / AltiVec / PacketMath.h
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// 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
#include "../../InternalHeaderCheck.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
// 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 Packet8s;
typedef __vector unsigned short int Packet8us;
typedef __vector signed char Packet16c;
typedef __vector unsigned char Packet16uc;
typedef eigen_packet_wrapper<__vector unsigned short int,0> Packet8bf;
// 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 = {X, X, X, X}
#define EIGEN_DECLARE_CONST_FAST_Packet4i(NAME,X) \
Packet4i p4i_##NAME = vec_splat_s32(X)
#define EIGEN_DECLARE_CONST_FAST_Packet4ui(NAME,X) \
Packet4ui p4ui_##NAME = {X, X, X, X}
#define EIGEN_DECLARE_CONST_FAST_Packet8us(NAME,X) \
Packet8us p8us_##NAME = {X, X, X, X, X, X, X, X}
#define EIGEN_DECLARE_CONST_FAST_Packet16uc(NAME,X) \
Packet16uc p16uc_##NAME = {X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, 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))
#define __UNPACK_TYPE__(PACKETNAME) typename unpacket_traits<PACKETNAME>::type
// 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 EIGEN_DECLARE_CONST_FAST_Packet4ui(SIGN, 0x80000000u);
static EIGEN_DECLARE_CONST_FAST_Packet4ui(PREV0DOT5, 0x3EFFFFFFu);
#ifndef __POWER8_VECTOR__
static EIGEN_DECLARE_CONST_FAST_Packet8us(ONE,1); //{ 1, 1, 1, 1, 1, 1, 1, 1}
static EIGEN_DECLARE_CONST_FAST_Packet16uc(ONE,1);
#endif
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 Packet8s p8s_COUNTDOWN = { 0, 1, 2, 3, 4, 5, 6, 7 };
static Packet8us p8us_COUNTDOWN = { 0, 1, 2, 3, 4, 5, 6, 7 };
static Packet16c p16c_COUNTDOWN = { 0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15};
static Packet16uc p16uc_COUNTDOWN = { 0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15};
static Packet16uc p16uc_REVERSE32 = { 12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3 };
static Packet16uc p16uc_REVERSE16 = { 14,15, 12,13, 10,11, 8,9, 6,7, 4,5, 2,3, 0,1 };
#ifndef _ARCH_PWR9
static Packet16uc p16uc_REVERSE8 = { 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 };
#endif
#ifdef _BIG_ENDIAN
static Packet16uc p16uc_DUPLICATE32_HI = { 0,1,2,3, 0,1,2,3, 4,5,6,7, 4,5,6,7 };
#endif
static const Packet16uc p16uc_DUPLICATE16_EVEN= { 0,1 ,0,1, 4,5, 4,5, 8,9, 8,9, 12,13, 12,13 };
static const Packet16uc p16uc_DUPLICATE16_ODD = { 2,3 ,2,3, 6,7, 6,7, 10,11, 10,11, 14,15, 14,15 };
static Packet16uc p16uc_QUADRUPLICATE16_HI = { 0,1,0,1,0,1,0,1, 2,3,2,3,2,3,2,3 };
// Handle endianness properly while loading constants
// Define global static constants:
#ifdef _BIG_ENDIAN
static Packet16uc p16uc_FORWARD = vec_lvsl(0, (float*)0);
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_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 };
#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,
HasTanh = EIGEN_FAST_MATH,
HasErf = EIGEN_FAST_MATH,
#endif
HasRound = 1,
HasFloor = 1,
HasCeil = 1,
HasRint = 1,
HasNegate = 1,
HasBlend = 1
};
};
template <>
struct packet_traits<bfloat16> : default_packet_traits {
typedef Packet8bf type;
typedef Packet8bf half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 8,
HasHalfPacket = 0,
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,
HasTanh = EIGEN_FAST_MATH,
HasErf = EIGEN_FAST_MATH,
#endif
HasRound = 1,
HasFloor = 1,
HasCeil = 1,
HasRint = 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,
HasShift = 1,
HasMul = 1,
HasDiv = 0,
HasBlend = 1
};
};
template <>
struct packet_traits<short int> : default_packet_traits {
typedef Packet8s type;
typedef Packet8s half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 8,
HasHalfPacket = 0,
HasAdd = 1,
HasSub = 1,
HasMul = 1,
HasDiv = 0,
HasBlend = 1
};
};
template <>
struct packet_traits<unsigned short int> : default_packet_traits {
typedef Packet8us type;
typedef Packet8us half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 8,
HasHalfPacket = 0,
HasAdd = 1,
HasSub = 1,
HasMul = 1,
HasDiv = 0,
HasBlend = 1
};
};
template <>
struct packet_traits<signed char> : default_packet_traits {
typedef Packet16c type;
typedef Packet16c half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 16,
HasHalfPacket = 0,
HasAdd = 1,
HasSub = 1,
HasMul = 1,
HasDiv = 0,
HasBlend = 1
};
};
template <>
struct packet_traits<unsigned char> : default_packet_traits {
typedef Packet16uc type;
typedef Packet16uc half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 16,
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=true, masked_load_available=false, masked_store_available=false};
};
template<> struct unpacket_traits<Packet8s>
{
typedef short int type;
typedef Packet8s half;
enum {size=8, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false};
};
template<> struct unpacket_traits<Packet8us>
{
typedef unsigned short int type;
typedef Packet8us half;
enum {size=8, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false};
};
template<> struct unpacket_traits<Packet16c>
{
typedef signed char type;
typedef Packet16c half;
enum {size=16, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false};
};
template<> struct unpacket_traits<Packet16uc>
{
typedef unsigned char type;
typedef Packet16uc half;
enum {size=16, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false};
};
template<> struct unpacket_traits<Packet8bf>
{
typedef bfloat16 type;
typedef Packet8bf half;
enum {size=8, alignment=Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false};
};
inline std::ostream & operator <<(std::ostream & s, const Packet16c & v)
{
union {
Packet16c v;
signed char n[16];
} vt;
vt.v = v;
for (int i=0; i< 16; i++)
s << vt.n[i] << ", ";
return s;
}
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 << 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;
}
template <typename Packet>
EIGEN_STRONG_INLINE Packet pload_common(const __UNPACK_TYPE__(Packet)* from)
{
// some versions of GCC throw "unused-but-set-parameter".
// ignoring these warnings for now.
EIGEN_UNUSED_VARIABLE(from);
EIGEN_DEBUG_ALIGNED_LOAD
#ifdef __VSX__
return vec_xl(0, const_cast<__UNPACK_TYPE__(Packet)*>(from));
#else
return vec_ld(0, from);
#endif
}
// Need to define them first or we get specialization after instantiation errors
template<> EIGEN_STRONG_INLINE Packet4f pload<Packet4f>(const float* from)
{
return pload_common<Packet4f>(from);
}
template<> EIGEN_STRONG_INLINE Packet4i pload<Packet4i>(const int* from)
{
return pload_common<Packet4i>(from);
}
template<> EIGEN_STRONG_INLINE Packet8s pload<Packet8s>(const short int* from)
{
return pload_common<Packet8s>(from);
}
template<> EIGEN_STRONG_INLINE Packet8us pload<Packet8us>(const unsigned short int* from)
{
return pload_common<Packet8us>(from);
}
template<> EIGEN_STRONG_INLINE Packet16c pload<Packet16c>(const signed char* from)
{
return pload_common<Packet16c>(from);
}
template<> EIGEN_STRONG_INLINE Packet16uc pload<Packet16uc>(const unsigned char* from)
{
return pload_common<Packet16uc>(from);
}
template<> EIGEN_STRONG_INLINE Packet8bf pload<Packet8bf>(const bfloat16* from)
{
return pload_common<Packet8us>(reinterpret_cast<const unsigned short int*>(from));
}
template <typename Packet>
EIGEN_STRONG_INLINE void pstore_common(__UNPACK_TYPE__(Packet)* to, const Packet& from){
// some versions of GCC throw "unused-but-set-parameter" (float *to).
// ignoring these warnings for now.
EIGEN_UNUSED_VARIABLE(to);
EIGEN_DEBUG_ALIGNED_STORE
#ifdef __VSX__
vec_xst(from, 0, to);
#else
vec_st(from, 0, to);
#endif
}
template<> EIGEN_STRONG_INLINE void pstore<float>(float* to, const Packet4f& from)
{
pstore_common<Packet4f>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstore<int>(int* to, const Packet4i& from)
{
pstore_common<Packet4i>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstore<short int>(short int* to, const Packet8s& from)
{
pstore_common<Packet8s>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstore<unsigned short int>(unsigned short int* to, const Packet8us& from)
{
pstore_common<Packet8us>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstore<bfloat16>(bfloat16* to, const Packet8bf& from)
{
pstore_common<Packet8us>(reinterpret_cast<unsigned short int*>(to), from);
}
template<> EIGEN_STRONG_INLINE void pstore<signed char>(signed char* to, const Packet16c& from)
{
pstore_common<Packet16c>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstore<unsigned char>(unsigned char* to, const Packet16uc& from)
{
pstore_common<Packet16uc>(to, from);
}
template<typename Packet>
EIGEN_STRONG_INLINE Packet pset1_size4(const __UNPACK_TYPE__(Packet)& from)
{
Packet v = {from, from, from, from};
return v;
}
template<typename Packet>
EIGEN_STRONG_INLINE Packet pset1_size8(const __UNPACK_TYPE__(Packet)& from)
{
Packet v = {from, from, from, from, from, from, from, from};
return v;
}
template<typename Packet>
EIGEN_STRONG_INLINE Packet pset1_size16(const __UNPACK_TYPE__(Packet)& from)
{
Packet v = {from, from, from, from, from, from, from, from, from, from, from, from, from, from, from, from};
return v;
}
template<> EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(const float& from) {
return pset1_size4<Packet4f>(from);
}
template<> EIGEN_STRONG_INLINE Packet4i pset1<Packet4i>(const int& from) {
return pset1_size4<Packet4i>(from);
}
template<> EIGEN_STRONG_INLINE Packet8s pset1<Packet8s>(const short int& from) {
return pset1_size8<Packet8s>(from);
}
template<> EIGEN_STRONG_INLINE Packet8us pset1<Packet8us>(const unsigned short int& from) {
return pset1_size8<Packet8us>(from);
}
template<> EIGEN_STRONG_INLINE Packet16c pset1<Packet16c>(const signed char& from) {
return pset1_size16<Packet16c>(from);
}
template<> EIGEN_STRONG_INLINE Packet16uc pset1<Packet16uc>(const unsigned char& from) {
return pset1_size16<Packet16uc>(from);
}
template<> EIGEN_STRONG_INLINE Packet4f pset1frombits<Packet4f>(unsigned int from) {
return reinterpret_cast<Packet4f>(pset1<Packet4i>(from));
}
template<> EIGEN_STRONG_INLINE Packet8bf pset1<Packet8bf>(const bfloat16& from) {
return pset1_size8<Packet8us>(reinterpret_cast<const unsigned short int&>(from));
}
template<typename Packet> EIGEN_STRONG_INLINE void
pbroadcast4_common(const __UNPACK_TYPE__(Packet) *a,
Packet& a0, Packet& a1, Packet& a2, Packet& a3)
{
a3 = pload<Packet>(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<Packet4f>(const float *a,
Packet4f& a0, Packet4f& a1, Packet4f& a2, Packet4f& a3)
{
pbroadcast4_common<Packet4f>(a, a0, a1, a2, a3);
}
template<> EIGEN_STRONG_INLINE void
pbroadcast4<Packet4i>(const int *a,
Packet4i& a0, Packet4i& a1, Packet4i& a2, Packet4i& a3)
{
pbroadcast4_common<Packet4i>(a, a0, a1, a2, a3);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline Packet pgather_common(const __UNPACK_TYPE__(Packet)* from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[4];
a[0] = from[0*stride];
a[1] = from[1*stride];
a[2] = from[2*stride];
a[3] = from[3*stride];
return pload<Packet>(a);
}
template<> EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const float* from, Index stride)
{
return pgather_common<Packet4f>(from, stride);
}
template<> EIGEN_DEVICE_FUNC inline Packet4i pgather<int, Packet4i>(const int* from, Index stride)
{
return pgather_common<Packet4i>(from, stride);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline Packet pgather_size8(const __UNPACK_TYPE__(Packet)* from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[8];
a[0] = from[0*stride];
a[1] = from[1*stride];
a[2] = from[2*stride];
a[3] = from[3*stride];
a[4] = from[4*stride];
a[5] = from[5*stride];
a[6] = from[6*stride];
a[7] = from[7*stride];
return pload<Packet>(a);
}
template<> EIGEN_DEVICE_FUNC inline Packet8s pgather<short int, Packet8s>(const short int* from, Index stride)
{
return pgather_size8<Packet8s>(from, stride);
}
template<> EIGEN_DEVICE_FUNC inline Packet8us pgather<unsigned short int, Packet8us>(const unsigned short int* from, Index stride)
{
return pgather_size8<Packet8us>(from, stride);
}
template<> EIGEN_DEVICE_FUNC inline Packet8bf pgather<bfloat16, Packet8bf>(const bfloat16* from, Index stride)
{
return pgather_size8<Packet8bf>(from, stride);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline Packet pgather_size16(const __UNPACK_TYPE__(Packet)* from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[16];
a[0] = from[0*stride];
a[1] = from[1*stride];
a[2] = from[2*stride];
a[3] = from[3*stride];
a[4] = from[4*stride];
a[5] = from[5*stride];
a[6] = from[6*stride];
a[7] = from[7*stride];
a[8] = from[8*stride];
a[9] = from[9*stride];
a[10] = from[10*stride];
a[11] = from[11*stride];
a[12] = from[12*stride];
a[13] = from[13*stride];
a[14] = from[14*stride];
a[15] = from[15*stride];
return pload<Packet>(a);
}
template<> EIGEN_DEVICE_FUNC inline Packet16c pgather<signed char, Packet16c>(const signed char* from, Index stride)
{
return pgather_size16<Packet16c>(from, stride);
}
template<> EIGEN_DEVICE_FUNC inline Packet16uc pgather<unsigned char, Packet16uc>(const unsigned char* from, Index stride)
{
return pgather_size16<Packet16uc>(from, stride);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline void pscatter_size4(__UNPACK_TYPE__(Packet)* to, const Packet& from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[4];
pstore<__UNPACK_TYPE__(Packet)>(a, from);
to[0*stride] = a[0];
to[1*stride] = a[1];
to[2*stride] = a[2];
to[3*stride] = a[3];
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<float, Packet4f>(float* to, const Packet4f& from, Index stride)
{
pscatter_size4<Packet4f>(to, from, stride);
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<int, Packet4i>(int* to, const Packet4i& from, Index stride)
{
pscatter_size4<Packet4i>(to, from, stride);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline void pscatter_size8(__UNPACK_TYPE__(Packet)* to, const Packet& from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[8];
pstore<__UNPACK_TYPE__(Packet)>(a, from);
to[0*stride] = a[0];
to[1*stride] = a[1];
to[2*stride] = a[2];
to[3*stride] = a[3];
to[4*stride] = a[4];
to[5*stride] = a[5];
to[6*stride] = a[6];
to[7*stride] = a[7];
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<short int, Packet8s>(short int* to, const Packet8s& from, Index stride)
{
pscatter_size8<Packet8s>(to, from, stride);
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<unsigned short int, Packet8us>(unsigned short int* to, const Packet8us& from, Index stride)
{
pscatter_size8<Packet8us>(to, from, stride);
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<bfloat16, Packet8bf>(bfloat16* to, const Packet8bf& from, Index stride)
{
pscatter_size8<Packet8bf>(to, from, stride);
}
template<typename Packet> EIGEN_DEVICE_FUNC inline void pscatter_size16(__UNPACK_TYPE__(Packet)* to, const Packet& from, Index stride)
{
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) a[16];
pstore<__UNPACK_TYPE__(Packet)>(a, from);
to[0*stride] = a[0];
to[1*stride] = a[1];
to[2*stride] = a[2];
to[3*stride] = a[3];
to[4*stride] = a[4];
to[5*stride] = a[5];
to[6*stride] = a[6];
to[7*stride] = a[7];
to[8*stride] = a[8];
to[9*stride] = a[9];
to[10*stride] = a[10];
to[11*stride] = a[11];
to[12*stride] = a[12];
to[13*stride] = a[13];
to[14*stride] = a[14];
to[15*stride] = a[15];
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<signed char, Packet16c>(signed char* to, const Packet16c& from, Index stride)
{
pscatter_size16<Packet16c>(to, from, stride);
}
template<> EIGEN_DEVICE_FUNC inline void pscatter<unsigned char, Packet16uc>(unsigned char* to, const Packet16uc& from, Index stride)
{
pscatter_size16<Packet16uc>(to, from, stride);
}
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 Packet8s plset<Packet8s>(const short int& a) { return pset1<Packet8s>(a) + p8s_COUNTDOWN; }
template<> EIGEN_STRONG_INLINE Packet8us plset<Packet8us>(const unsigned short int& a) { return pset1<Packet8us>(a) + p8us_COUNTDOWN; }
template<> EIGEN_STRONG_INLINE Packet16c plset<Packet16c>(const signed char& a) { return pset1<Packet16c>(a) + p16c_COUNTDOWN; }
template<> EIGEN_STRONG_INLINE Packet16uc plset<Packet16uc>(const unsigned char& a) { return pset1<Packet16uc>(a) + p16uc_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 Packet4ui padd<Packet4ui> (const Packet4ui& a, const Packet4ui& b) { return a + b; }
template<> EIGEN_STRONG_INLINE Packet8s padd<Packet8s> (const Packet8s& a, const Packet8s& b) { return a + b; }
template<> EIGEN_STRONG_INLINE Packet8us padd<Packet8us> (const Packet8us& a, const Packet8us& b) { return a + b; }
template<> EIGEN_STRONG_INLINE Packet16c padd<Packet16c> (const Packet16c& a, const Packet16c& b) { return a + b; }
template<> EIGEN_STRONG_INLINE Packet16uc padd<Packet16uc>(const Packet16uc& a, const Packet16uc& 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 Packet8s psub<Packet8s> (const Packet8s& a, const Packet8s& b) { return a - b; }
template<> EIGEN_STRONG_INLINE Packet8us psub<Packet8us> (const Packet8us& a, const Packet8us& b) { return a - b; }
template<> EIGEN_STRONG_INLINE Packet16c psub<Packet16c> (const Packet16c& a, const Packet16c& b) { return a - b; }
template<> EIGEN_STRONG_INLINE Packet16uc psub<Packet16uc>(const Packet16uc& a, const Packet16uc& b) { return a - b; }
template<> EIGEN_STRONG_INLINE Packet4f pnegate(const Packet4f& a)
{
#ifdef __POWER8_VECTOR__
return vec_neg(a);
#else
return p4f_ZERO - a;
#endif
}
template<> EIGEN_STRONG_INLINE Packet4i pnegate(const Packet4i& a)
{
#ifdef __POWER8_VECTOR__
return vec_neg(a);
#else
return p4i_ZERO - a;
#endif
}
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 Packet8s pmul<Packet8s> (const Packet8s& a, const Packet8s& b) { return vec_mul(a,b); }
template<> EIGEN_STRONG_INLINE Packet8us pmul<Packet8us> (const Packet8us& a, const Packet8us& b) { return vec_mul(a,b); }
template<> EIGEN_STRONG_INLINE Packet16c pmul<Packet16c> (const Packet16c& a, const Packet16c& b) { return vec_mul(a,b); }
template<> EIGEN_STRONG_INLINE Packet16uc pmul<Packet16uc>(const Packet16uc& a, const Packet16uc& b) { return vec_mul(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 Packet8s pmadd(const Packet8s& a, const Packet8s& b, const Packet8s& c) { return vec_madd(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet8us pmadd(const Packet8us& a, const Packet8us& b, const Packet8us& c) { return vec_madd(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet4f pmsub(const Packet4f& a, const Packet4f& b, const Packet4f& c) { return vec_msub(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet4f pnmadd(const Packet4f& a, const Packet4f& b, const Packet4f& c) { return vec_nmsub(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet4f pnmsub(const Packet4f& a, const Packet4f& b, const Packet4f& c) { return vec_nmadd(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 Packet8s pmin<Packet8s>(const Packet8s& a, const Packet8s& b) { return vec_min(a, b); }
template<> EIGEN_STRONG_INLINE Packet8us pmin<Packet8us>(const Packet8us& a, const Packet8us& b) { return vec_min(a, b); }
template<> EIGEN_STRONG_INLINE Packet16c pmin<Packet16c>(const Packet16c& a, const Packet16c& b) { return vec_min(a, b); }
template<> EIGEN_STRONG_INLINE Packet16uc pmin<Packet16uc>(const Packet16uc& a, const Packet16uc& 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 Packet8s pmax<Packet8s>(const Packet8s& a, const Packet8s& b) { return vec_max(a, b); }
template<> EIGEN_STRONG_INLINE Packet8us pmax<Packet8us>(const Packet8us& a, const Packet8us& b) { return vec_max(a, b); }
template<> EIGEN_STRONG_INLINE Packet16c pmax<Packet16c>(const Packet16c& a, const Packet16c& b) { return vec_max(a, b); }
template<> EIGEN_STRONG_INLINE Packet16uc pmax<Packet16uc>(const Packet16uc& a, const Packet16uc& 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_le(const Packet4i& a, const Packet4i& b) { return reinterpret_cast<Packet4i>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet4i pcmp_lt(const Packet4i& a, const Packet4i& b) { return reinterpret_cast<Packet4i>(vec_cmplt(a,b)); }
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 Packet8s pcmp_le(const Packet8s& a, const Packet8s& b) { return reinterpret_cast<Packet8s>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet8s pcmp_lt(const Packet8s& a, const Packet8s& b) { return reinterpret_cast<Packet8s>(vec_cmplt(a,b)); }
template<> EIGEN_STRONG_INLINE Packet8s pcmp_eq(const Packet8s& a, const Packet8s& b) { return reinterpret_cast<Packet8s>(vec_cmpeq(a,b)); }
template<> EIGEN_STRONG_INLINE Packet8us pcmp_le(const Packet8us& a, const Packet8us& b) { return reinterpret_cast<Packet8us>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet8us pcmp_lt(const Packet8us& a, const Packet8us& b) { return reinterpret_cast<Packet8us>(vec_cmplt(a,b)); }
template<> EIGEN_STRONG_INLINE Packet8us pcmp_eq(const Packet8us& a, const Packet8us& b) { return reinterpret_cast<Packet8us>(vec_cmpeq(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16c pcmp_le(const Packet16c& a, const Packet16c& b) { return reinterpret_cast<Packet16c>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16c pcmp_lt(const Packet16c& a, const Packet16c& b) { return reinterpret_cast<Packet16c>(vec_cmplt(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16c pcmp_eq(const Packet16c& a, const Packet16c& b) { return reinterpret_cast<Packet16c>(vec_cmpeq(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16uc pcmp_le(const Packet16uc& a, const Packet16uc& b) { return reinterpret_cast<Packet16uc>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16uc pcmp_lt(const Packet16uc& a, const Packet16uc& b) { return reinterpret_cast<Packet16uc>(vec_cmplt(a,b)); }
template<> EIGEN_STRONG_INLINE Packet16uc pcmp_eq(const Packet16uc& a, const Packet16uc& b) { return reinterpret_cast<Packet16uc>(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 Packet4ui pand<Packet4ui>(const Packet4ui& a, const Packet4ui& b) { return vec_and(a, b); }
template<> EIGEN_STRONG_INLINE Packet8us pand<Packet8us>(const Packet8us& a, const Packet8us& b) { return vec_and(a, b); }
template<> EIGEN_STRONG_INLINE Packet8bf pand<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
return pand<Packet8us>(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 Packet8s por<Packet8s>(const Packet8s& a, const Packet8s& b) { return vec_or(a, b); }
template<> EIGEN_STRONG_INLINE Packet8us por<Packet8us>(const Packet8us& a, const Packet8us& b) { return vec_or(a, b); }
template<> EIGEN_STRONG_INLINE Packet8bf por<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
return por<Packet8us>(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 Packet8bf pxor<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
return pxor<Packet8us>(a, b);
}
template<> EIGEN_STRONG_INLINE Packet4f pandnot<Packet4f>(const Packet4f& a, const Packet4f& b) { return vec_andc(a, b); }
template<> EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_andc(a, b); }
template<> EIGEN_STRONG_INLINE Packet4f pselect(const Packet4f& mask, const Packet4f& a, const Packet4f& b) {
return vec_sel(b, a, reinterpret_cast<Packet4ui>(mask));
}
template<> EIGEN_STRONG_INLINE Packet4f pround<Packet4f>(const Packet4f& a)
{
Packet4f t = vec_add(reinterpret_cast<Packet4f>(vec_or(vec_and(reinterpret_cast<Packet4ui>(a), p4ui_SIGN), p4ui_PREV0DOT5)), a);
Packet4f res;
#ifdef __VSX__
__asm__("xvrspiz %x0, %x1\n\t"
: "=&wa" (res)
: "wa" (t));
#else
__asm__("vrfiz %0, %1\n\t"
: "=v" (res)
: "v" (t));
#endif
return res;
}
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); }
template<> EIGEN_STRONG_INLINE Packet4f print<Packet4f>(const Packet4f& a)
{
Packet4f res;
__asm__("xvrspic %x0, %x1\n\t"
: "=&wa" (res)
: "wa" (a));
return res;
}
template<typename Packet> EIGEN_STRONG_INLINE Packet ploadu_common(const __UNPACK_TYPE__(Packet)* from)
{
EIGEN_DEBUG_ALIGNED_LOAD
#if defined(__VSX__) || !defined(_BIG_ENDIAN)
EIGEN_DEBUG_UNALIGNED_LOAD
return vec_xl(0, const_cast<__UNPACK_TYPE__(Packet)*>(from));
#else
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
//TODO: Add static_cast here
return (Packet) vec_perm(MSQ, LSQ, mask); // align the data
#endif
}
template<> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from)
{
return ploadu_common<Packet4f>(from);
}
template<> EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(const int* from)
{
return ploadu_common<Packet4i>(from);
}
template<> EIGEN_STRONG_INLINE Packet8s ploadu<Packet8s>(const short int* from)
{
return ploadu_common<Packet8s>(from);
}
template<> EIGEN_STRONG_INLINE Packet8us ploadu<Packet8us>(const unsigned short int* from)
{
return ploadu_common<Packet8us>(from);
}
template<> EIGEN_STRONG_INLINE Packet8bf ploadu<Packet8bf>(const bfloat16* from)
{
return ploadu_common<Packet8us>(reinterpret_cast<const unsigned short int*>(from));
}
template<> EIGEN_STRONG_INLINE Packet16c ploadu<Packet16c>(const signed char* from)
{
return ploadu_common<Packet16c>(from);
}
template<> EIGEN_STRONG_INLINE Packet16uc ploadu<Packet16uc>(const unsigned char* from)
{
return ploadu_common<Packet16uc>(from);
}
template<typename Packet> EIGEN_STRONG_INLINE Packet ploaddup_common(const __UNPACK_TYPE__(Packet)* from)
{
Packet p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet>(from);
else p = ploadu<Packet>(from);
return vec_mergeh(p, p);
}
template<> EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(const float* from)
{
return ploaddup_common<Packet4f>(from);
}
template<> EIGEN_STRONG_INLINE Packet4i ploaddup<Packet4i>(const int* from)
{
return ploaddup_common<Packet4i>(from);
}
template<> EIGEN_STRONG_INLINE Packet8s ploaddup<Packet8s>(const short int* from)
{
Packet8s p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet8s>(from);
else p = ploadu<Packet8s>(from);
return vec_mergeh(p, p);
}
template<> EIGEN_STRONG_INLINE Packet8us ploaddup<Packet8us>(const unsigned short int* from)
{
Packet8us p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet8us>(from);
else p = ploadu<Packet8us>(from);
return vec_mergeh(p, p);
}
template<> EIGEN_STRONG_INLINE Packet8s ploadquad<Packet8s>(const short int* from)
{
Packet8s p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet8s>(from);
else p = ploadu<Packet8s>(from);
return vec_perm(p, p, p16uc_QUADRUPLICATE16_HI);
}
template<> EIGEN_STRONG_INLINE Packet8us ploadquad<Packet8us>(const unsigned short int* from)
{
Packet8us p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet8us>(from);
else p = ploadu<Packet8us>(from);
return vec_perm(p, p, p16uc_QUADRUPLICATE16_HI);
}
template<> EIGEN_STRONG_INLINE Packet8bf ploadquad<Packet8bf>(const bfloat16* from)
{
return ploadquad<Packet8us>(reinterpret_cast<const unsigned short int*>(from));
}
template<> EIGEN_STRONG_INLINE Packet16c ploaddup<Packet16c>(const signed char* from)
{
Packet16c p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet16c>(from);
else p = ploadu<Packet16c>(from);
return vec_mergeh(p, p);
}
template<> EIGEN_STRONG_INLINE Packet16uc ploaddup<Packet16uc>(const unsigned char* from)
{
Packet16uc p;
if((std::ptrdiff_t(from) % 16) == 0) p = pload<Packet16uc>(from);
else p = ploadu<Packet16uc>(from);
return vec_mergeh(p, p);
}
template<typename Packet> EIGEN_STRONG_INLINE void pstoreu_common(__UNPACK_TYPE__(Packet)* to, const Packet& from)
{
EIGEN_DEBUG_UNALIGNED_STORE
#if defined(__VSX__) || !defined(_BIG_ENDIAN)
vec_xst(from, 0, to);
#else
// 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 second
#endif
}
template<> EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet4f& from)
{
pstoreu_common<Packet4f>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<int>(int* to, const Packet4i& from)
{
pstoreu_common<Packet4i>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<short int>(short int* to, const Packet8s& from)
{
pstoreu_common<Packet8s>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<unsigned short int>(unsigned short int* to, const Packet8us& from)
{
pstoreu_common<Packet8us>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<bfloat16>(bfloat16* to, const Packet8bf& from)
{
pstoreu_common<Packet8us>(reinterpret_cast<unsigned short int*>(to), from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<signed char>(signed char* to, const Packet16c& from)
{
pstoreu_common<Packet16c>(to, from);
}
template<> EIGEN_STRONG_INLINE void pstoreu<unsigned char>(unsigned char* to, const Packet16uc& from)
{
pstoreu_common<Packet16uc>(to, from);
}
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<typename Packet> EIGEN_STRONG_INLINE __UNPACK_TYPE__(Packet) pfirst_common(const Packet& a) {
EIGEN_ALIGN16 __UNPACK_TYPE__(Packet) x;
vec_ste(a, 0, &x);
return x;
}
template<> EIGEN_STRONG_INLINE short int pfirst<Packet8s>(const Packet8s& a) {
return pfirst_common<Packet8s>(a);
}
template<> EIGEN_STRONG_INLINE unsigned short int pfirst<Packet8us>(const Packet8us& a) {
return pfirst_common<Packet8us>(a);
}
template<> EIGEN_STRONG_INLINE signed char pfirst<Packet16c>(const Packet16c& a)
{
return pfirst_common<Packet16c>(a);
}
template<> EIGEN_STRONG_INLINE unsigned char pfirst<Packet16uc>(const Packet16uc& a)
{
return pfirst_common<Packet16uc>(a);
}
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 Packet8s preverse(const Packet8s& a)
{
return reinterpret_cast<Packet8s>(vec_perm(reinterpret_cast<Packet16uc>(a), reinterpret_cast<Packet16uc>(a), p16uc_REVERSE16));
}
template<> EIGEN_STRONG_INLINE Packet8us preverse(const Packet8us& a)
{
return reinterpret_cast<Packet8us>(vec_perm(reinterpret_cast<Packet16uc>(a), reinterpret_cast<Packet16uc>(a), p16uc_REVERSE16));
}
template<> EIGEN_STRONG_INLINE Packet16c preverse(const Packet16c& a)
{
#ifdef _ARCH_PWR9
return vec_revb(a);
#else
return vec_perm(a, a, p16uc_REVERSE8);
#endif
}
template<> EIGEN_STRONG_INLINE Packet16uc preverse(const Packet16uc& a)
{
#ifdef _ARCH_PWR9
return vec_revb(a);
#else
return vec_perm(a, a, p16uc_REVERSE8);
#endif
}
template<> EIGEN_STRONG_INLINE Packet8bf preverse(const Packet8bf& a)
{
return preverse<Packet8us>(a);
}
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<> EIGEN_STRONG_INLINE Packet8s pabs(const Packet8s& a) { return vec_abs(a); }
template<> EIGEN_STRONG_INLINE Packet8us pabs(const Packet8us& a) { return a; }
template<> EIGEN_STRONG_INLINE Packet16c pabs(const Packet16c& a) { return vec_abs(a); }
template<> EIGEN_STRONG_INLINE Packet16uc pabs(const Packet16uc& a) { return a; }
template<> EIGEN_STRONG_INLINE Packet8bf pabs(const Packet8bf& a) {
EIGEN_DECLARE_CONST_FAST_Packet8us(abs_mask,0x7FFF);
return pand<Packet8us>(p8us_abs_mask, a);
}
template<int N> EIGEN_STRONG_INLINE Packet4i parithmetic_shift_right(const Packet4i& a)
{ return vec_sra(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); }
template<int N> EIGEN_STRONG_INLINE Packet4i plogical_shift_right(const Packet4i& a)
{ return vec_sr(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); }
template<int N> EIGEN_STRONG_INLINE Packet4i plogical_shift_left(const Packet4i& a)
{ return vec_sl(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); }
template<int N> EIGEN_STRONG_INLINE Packet4f plogical_shift_left(const Packet4f& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet4ui(mask, N);
Packet4ui r = vec_sl(reinterpret_cast<Packet4ui>(a), p4ui_mask);
return reinterpret_cast<Packet4f>(r);
}
template<int N> EIGEN_STRONG_INLINE Packet4f plogical_shift_right(const Packet4f& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet4ui(mask, N);
Packet4ui r = vec_sr(reinterpret_cast<Packet4ui>(a), p4ui_mask);
return reinterpret_cast<Packet4f>(r);
}
template<int N> EIGEN_STRONG_INLINE Packet4ui plogical_shift_right(const Packet4ui& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet4ui(mask, N);
return vec_sr(a, p4ui_mask);
}
template<int N> EIGEN_STRONG_INLINE Packet4ui plogical_shift_left(const Packet4ui& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet4ui(mask, N);
return vec_sl(a, p4ui_mask);
}
template<int N> EIGEN_STRONG_INLINE Packet8us plogical_shift_left(const Packet8us& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet8us(mask, N);
return vec_sl(a, p8us_mask);
}
template<int N> EIGEN_STRONG_INLINE Packet8us plogical_shift_right(const Packet8us& a)
{
const EIGEN_DECLARE_CONST_FAST_Packet8us(mask, N);
return vec_sr(a, p8us_mask);
}
EIGEN_STRONG_INLINE Packet4f Bf16ToF32Even(const Packet8bf& bf){
return plogical_shift_left<16>(reinterpret_cast<Packet4f>(bf.m_val));
}
EIGEN_STRONG_INLINE Packet4f Bf16ToF32Odd(const Packet8bf& bf){
const EIGEN_DECLARE_CONST_FAST_Packet4ui(high_mask, 0xFFFF0000);
return pand<Packet4f>(
reinterpret_cast<Packet4f>(bf.m_val),
reinterpret_cast<Packet4f>(p4ui_high_mask)
);
}
// Simple interleaving of bool masks, prevents true values from being
// converted to NaNs.
EIGEN_STRONG_INLINE Packet8bf F32ToBf16Bool(Packet4f even, Packet4f odd) {
const EIGEN_DECLARE_CONST_FAST_Packet4ui(high_mask, 0xFFFF0000);
Packet4f bf_odd, bf_even;
bf_odd = pand(reinterpret_cast<Packet4f>(p4ui_high_mask), odd);
bf_even = plogical_shift_right<16>(even);
return reinterpret_cast<Packet8us>(por<Packet4f>(bf_even, bf_odd));
}
EIGEN_STRONG_INLINE Packet8bf F32ToBf16(Packet4f p4f){
Packet4ui input = reinterpret_cast<Packet4ui>(p4f);
Packet4ui lsb = plogical_shift_right<16>(input);
lsb = pand<Packet4ui>(lsb, reinterpret_cast<Packet4ui>(p4i_ONE));
EIGEN_DECLARE_CONST_FAST_Packet4ui(BIAS,0x7FFFu);
Packet4ui rounding_bias = padd<Packet4ui>(lsb, p4ui_BIAS);
input = padd<Packet4ui>(input, rounding_bias);
//Test NaN and Subnormal - Begin
const EIGEN_DECLARE_CONST_FAST_Packet4ui(exp_mask, 0x7F800000);
Packet4ui exp = pand<Packet4ui>(p4ui_exp_mask, reinterpret_cast<Packet4ui>(p4f));
const EIGEN_DECLARE_CONST_FAST_Packet4ui(mantissa_mask, 0x7FFFFF);
Packet4ui mantissa = pand<Packet4ui>(p4ui_mantissa_mask, reinterpret_cast<Packet4ui>(p4f));
const EIGEN_DECLARE_CONST_FAST_Packet4ui(max_exp, 0x7F800000);
Packet4bi is_max_exp = vec_cmpeq(exp, p4ui_max_exp);
Packet4bi is_zero_exp = vec_cmpeq(exp, reinterpret_cast<Packet4ui>(p4i_ZERO));
Packet4bi is_mant_zero = vec_cmpeq(mantissa, reinterpret_cast<Packet4ui>(p4i_ZERO));
Packet4ui nan_selector = pandnot<Packet4ui>(
reinterpret_cast<Packet4ui>(is_max_exp),
reinterpret_cast<Packet4ui>(is_mant_zero)
);
Packet4ui subnormal_selector = pandnot<Packet4ui>(
reinterpret_cast<Packet4ui>(is_zero_exp),
reinterpret_cast<Packet4ui>(is_mant_zero)
);
const EIGEN_DECLARE_CONST_FAST_Packet4ui(nan, 0x7FC00000);
input = vec_sel(input, p4ui_nan, nan_selector);
input = vec_sel(input, reinterpret_cast<Packet4ui>(p4f), subnormal_selector);
//Test NaN and Subnormal - End
input = plogical_shift_right<16>(input);
return reinterpret_cast<Packet8us>(input);
}
EIGEN_STRONG_INLINE Packet8bf F32ToBf16(Packet4f even, Packet4f odd){
Packet4f bf_odd, bf_even;
bf_odd = reinterpret_cast<Packet4f>(F32ToBf16(odd).m_val);
bf_odd = plogical_shift_left<16>(bf_odd);
bf_even = reinterpret_cast<Packet4f>(F32ToBf16(even).m_val);
return reinterpret_cast<Packet8us>(por<Packet4f>(bf_even, bf_odd));
}
#define BF16_TO_F32_UNARY_OP_WRAPPER(OP, A) \
Packet4f a_even = Bf16ToF32Even(A);\
Packet4f a_odd = Bf16ToF32Odd(A);\
Packet4f op_even = OP(a_even);\
Packet4f op_odd = OP(a_odd);\
return F32ToBf16(op_even, op_odd);\
#define BF16_TO_F32_BINARY_OP_WRAPPER(OP, A, B) \
Packet4f a_even = Bf16ToF32Even(A);\
Packet4f a_odd = Bf16ToF32Odd(A);\
Packet4f b_even = Bf16ToF32Even(B);\
Packet4f b_odd = Bf16ToF32Odd(B);\
Packet4f op_even = OP(a_even, b_even);\
Packet4f op_odd = OP(a_odd, b_odd);\
return F32ToBf16(op_even, op_odd);\
#define BF16_TO_F32_BINARY_OP_WRAPPER_BOOL(OP, A, B) \
Packet4f a_even = Bf16ToF32Even(A);\
Packet4f a_odd = Bf16ToF32Odd(A);\
Packet4f b_even = Bf16ToF32Even(B);\
Packet4f b_odd = Bf16ToF32Odd(B);\
Packet4f op_even = OP(a_even, b_even);\
Packet4f op_odd = OP(a_odd, b_odd);\
return F32ToBf16Bool(op_even, op_odd);\
template<> EIGEN_STRONG_INLINE Packet8bf padd<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(padd<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pmul<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(pmul<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pdiv<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(pdiv<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pnegate<Packet8bf>(const Packet8bf& a) {
BF16_TO_F32_UNARY_OP_WRAPPER(pnegate<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf psub<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(psub<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf psqrt<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(vec_sqrt, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf prsqrt<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(prsqrt<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pexp<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(pexp_float, a);
}
template<> EIGEN_STRONG_INLINE Packet4f pldexp<Packet4f>(const Packet4f& a, const Packet4f& exponent) {
return pldexp_generic(a,exponent);
}
template<> EIGEN_STRONG_INLINE Packet8bf pldexp<Packet8bf> (const Packet8bf& a, const Packet8bf& exponent){
BF16_TO_F32_BINARY_OP_WRAPPER(pldexp<Packet4f>, a, exponent);
}
template<> EIGEN_STRONG_INLINE Packet4f pfrexp<Packet4f>(const Packet4f& a, Packet4f& exponent) {
return pfrexp_generic(a,exponent);
}
template<> EIGEN_STRONG_INLINE Packet8bf pfrexp<Packet8bf> (const Packet8bf& a, Packet8bf& e){
Packet4f a_even = Bf16ToF32Even(a);
Packet4f a_odd = Bf16ToF32Odd(a);
Packet4f e_even;
Packet4f e_odd;
Packet4f op_even = pfrexp<Packet4f>(a_even, e_even);
Packet4f op_odd = pfrexp<Packet4f>(a_odd, e_odd);
e = F32ToBf16(e_even, e_odd);
return F32ToBf16(op_even, op_odd);
}
template<> EIGEN_STRONG_INLINE Packet8bf psin<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(psin_float, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcos<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(pcos_float, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf plog<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(plog_float, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pfloor<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(pfloor<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pceil<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(pceil<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pround<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(pround<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf print<Packet8bf> (const Packet8bf& a){
BF16_TO_F32_UNARY_OP_WRAPPER(print<Packet4f>, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf pmadd(const Packet8bf& a, const Packet8bf& b, const Packet8bf& c) {
Packet4f a_even = Bf16ToF32Even(a);
Packet4f a_odd = Bf16ToF32Odd(a);
Packet4f b_even = Bf16ToF32Even(b);
Packet4f b_odd = Bf16ToF32Odd(b);
Packet4f c_even = Bf16ToF32Even(c);
Packet4f c_odd = Bf16ToF32Odd(c);
Packet4f pmadd_even = pmadd<Packet4f>(a_even, b_even, c_even);
Packet4f pmadd_odd = pmadd<Packet4f>(a_odd, b_odd, c_odd);
return F32ToBf16(pmadd_even, pmadd_odd);
}
template<> EIGEN_STRONG_INLINE Packet8bf pmin<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(pmin<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pmax<Packet8bf>(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER(pmax<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcmp_lt(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER_BOOL(pcmp_lt<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcmp_lt_or_nan(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER_BOOL(pcmp_lt_or_nan<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcmp_le(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER_BOOL(pcmp_le<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcmp_eq(const Packet8bf& a, const Packet8bf& b) {
BF16_TO_F32_BINARY_OP_WRAPPER_BOOL(pcmp_eq<Packet4f>, a, b);
}
template<> EIGEN_STRONG_INLINE bfloat16 pfirst(const Packet8bf& a) {
return Eigen::bfloat16_impl::raw_uint16_to_bfloat16((pfirst<Packet8us>(a)));
}
template<> EIGEN_STRONG_INLINE Packet8bf ploaddup<Packet8bf>(const bfloat16* from)
{
return ploaddup<Packet8us>(reinterpret_cast<const unsigned short int*>(from));
}
template<> EIGEN_STRONG_INLINE Packet8bf plset<Packet8bf>(const bfloat16& a) {
bfloat16 countdown[8] = { bfloat16(0), bfloat16(1), bfloat16(2), bfloat16(3),
bfloat16(4), bfloat16(5), bfloat16(6), bfloat16(7) };
return padd<Packet8bf>(pset1<Packet8bf>(a), pload<Packet8bf>(countdown));
}
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 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 bfloat16 predux<Packet8bf>(const Packet8bf& a)
{
float redux_even = predux<Packet4f>(Bf16ToF32Even(a));
float redux_odd = predux<Packet4f>(Bf16ToF32Odd(a));
float f32_result = redux_even + redux_odd;
return bfloat16(f32_result);
}
template<typename Packet> EIGEN_STRONG_INLINE __UNPACK_TYPE__(Packet) predux_size8(const Packet& a)
{
union{
Packet v;
__UNPACK_TYPE__(Packet) n[8];
} vt;
vt.v = a;
EIGEN_ALIGN16 int first_loader[4] = { vt.n[0], vt.n[1], vt.n[2], vt.n[3] };
EIGEN_ALIGN16 int second_loader[4] = { vt.n[4], vt.n[5], vt.n[6], vt.n[7] };
Packet4i first_half = pload<Packet4i>(first_loader);
Packet4i second_half = pload<Packet4i>(second_loader);
return static_cast<__UNPACK_TYPE__(Packet)>(predux(first_half) + predux(second_half));
}
template<> EIGEN_STRONG_INLINE short int predux<Packet8s>(const Packet8s& a)
{
return predux_size8<Packet8s>(a);
}
template<> EIGEN_STRONG_INLINE unsigned short int predux<Packet8us>(const Packet8us& a)
{
return predux_size8<Packet8us>(a);
}
template<typename Packet> EIGEN_STRONG_INLINE __UNPACK_TYPE__(Packet) predux_size16(const Packet& a)
{
union{
Packet v;
__UNPACK_TYPE__(Packet) n[16];
} vt;
vt.v = a;
EIGEN_ALIGN16 int first_loader[4] = { vt.n[0], vt.n[1], vt.n[2], vt.n[3] };
EIGEN_ALIGN16 int second_loader[4] = { vt.n[4], vt.n[5], vt.n[6], vt.n[7] };
EIGEN_ALIGN16 int third_loader[4] = { vt.n[8], vt.n[9], vt.n[10], vt.n[11] };
EIGEN_ALIGN16 int fourth_loader[4] = { vt.n[12], vt.n[13], vt.n[14], vt.n[15] };
Packet4i first_quarter = pload<Packet4i>(first_loader);
Packet4i second_quarter = pload<Packet4i>(second_loader);
Packet4i third_quarter = pload<Packet4i>(third_loader);
Packet4i fourth_quarter = pload<Packet4i>(fourth_loader);
return static_cast<__UNPACK_TYPE__(Packet)>(predux(first_quarter) + predux(second_quarter)
+ predux(third_quarter) + predux(fourth_quarter));
}
template<> EIGEN_STRONG_INLINE signed char predux<Packet16c>(const Packet16c& a)
{
return predux_size16<Packet16c>(a);
}
template<> EIGEN_STRONG_INLINE unsigned char predux<Packet16uc>(const Packet16uc& a)
{
return predux_size16<Packet16uc>(a);
}
// 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];
}
template<> EIGEN_STRONG_INLINE short int predux_mul<Packet8s>(const Packet8s& a)
{
Packet8s pair, quad, octo;
pair = vec_mul(a, vec_sld(a, a, 8));
quad = vec_mul(pair, vec_sld(pair, pair, 4));
octo = vec_mul(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE unsigned short int predux_mul<Packet8us>(const Packet8us& a)
{
Packet8us pair, quad, octo;
pair = vec_mul(a, vec_sld(a, a, 8));
quad = vec_mul(pair, vec_sld(pair, pair, 4));
octo = vec_mul(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE bfloat16 predux_mul<Packet8bf>(const Packet8bf& a)
{
float redux_even = predux_mul<Packet4f>(Bf16ToF32Even(a));
float redux_odd = predux_mul<Packet4f>(Bf16ToF32Odd(a));
float f32_result = redux_even * redux_odd;
return bfloat16(f32_result);
}
template<> EIGEN_STRONG_INLINE signed char predux_mul<Packet16c>(const Packet16c& a)
{
Packet16c pair, quad, octo, result;
pair = vec_mul(a, vec_sld(a, a, 8));
quad = vec_mul(pair, vec_sld(pair, pair, 4));
octo = vec_mul(quad, vec_sld(quad, quad, 2));
result = vec_mul(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
template<> EIGEN_STRONG_INLINE unsigned char predux_mul<Packet16uc>(const Packet16uc& a)
{
Packet16uc pair, quad, octo, result;
pair = vec_mul(a, vec_sld(a, a, 8));
quad = vec_mul(pair, vec_sld(pair, pair, 4));
octo = vec_mul(quad, vec_sld(quad, quad, 2));
result = vec_mul(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
// min
template<typename Packet> EIGEN_STRONG_INLINE
__UNPACK_TYPE__(Packet) predux_min4(const Packet& a)
{
Packet 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 float predux_min<Packet4f>(const Packet4f& a)
{
return predux_min4<Packet4f>(a);
}
template<> EIGEN_STRONG_INLINE int predux_min<Packet4i>(const Packet4i& a)
{
return predux_min4<Packet4i>(a);
}
template<> EIGEN_STRONG_INLINE bfloat16 predux_min<Packet8bf>(const Packet8bf& a)
{
float redux_even = predux_min<Packet4f>(Bf16ToF32Even(a));
float redux_odd = predux_min<Packet4f>(Bf16ToF32Odd(a));
float f32_result = (std::min)(redux_even, redux_odd);
return bfloat16(f32_result);
}
template<> EIGEN_STRONG_INLINE short int predux_min<Packet8s>(const Packet8s& a)
{
Packet8s pair, quad, octo;
//pair = { Min(a0,a4), Min(a1,a5), Min(a2,a6), Min(a3,a7) }
pair = vec_min(a, vec_sld(a, a, 8));
//quad = { Min(a0, a4, a2, a6), Min(a1, a5, a3, a7) }
quad = vec_min(pair, vec_sld(pair, pair, 4));
//octo = { Min(a0, a4, a2, a6, a1, a5, a3, a7) }
octo = vec_min(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE unsigned short int predux_min<Packet8us>(const Packet8us& a)
{
Packet8us pair, quad, octo;
//pair = { Min(a0,a4), Min(a1,a5), Min(a2,a6), Min(a3,a7) }
pair = vec_min(a, vec_sld(a, a, 8));
//quad = { Min(a0, a4, a2, a6), Min(a1, a5, a3, a7) }
quad = vec_min(pair, vec_sld(pair, pair, 4));
//octo = { Min(a0, a4, a2, a6, a1, a5, a3, a7) }
octo = vec_min(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE signed char predux_min<Packet16c>(const Packet16c& a)
{
Packet16c pair, quad, octo, result;
pair = vec_min(a, vec_sld(a, a, 8));
quad = vec_min(pair, vec_sld(pair, pair, 4));
octo = vec_min(quad, vec_sld(quad, quad, 2));
result = vec_min(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
template<> EIGEN_STRONG_INLINE unsigned char predux_min<Packet16uc>(const Packet16uc& a)
{
Packet16uc pair, quad, octo, result;
pair = vec_min(a, vec_sld(a, a, 8));
quad = vec_min(pair, vec_sld(pair, pair, 4));
octo = vec_min(quad, vec_sld(quad, quad, 2));
result = vec_min(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
// max
template<typename Packet> EIGEN_STRONG_INLINE __UNPACK_TYPE__(Packet) predux_max4(const Packet& a)
{
Packet 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 float predux_max<Packet4f>(const Packet4f& a)
{
return predux_max4<Packet4f>(a);
}
template<> EIGEN_STRONG_INLINE int predux_max<Packet4i>(const Packet4i& a)
{
return predux_max4<Packet4i>(a);
}
template<> EIGEN_STRONG_INLINE bfloat16 predux_max<Packet8bf>(const Packet8bf& a)
{
float redux_even = predux_max<Packet4f>(Bf16ToF32Even(a));
float redux_odd = predux_max<Packet4f>(Bf16ToF32Odd(a));
float f32_result = (std::max)(redux_even, redux_odd);
return bfloat16(f32_result);
}
template<> EIGEN_STRONG_INLINE short int predux_max<Packet8s>(const Packet8s& a)
{
Packet8s pair, quad, octo;
//pair = { Max(a0,a4), Max(a1,a5), Max(a2,a6), Max(a3,a7) }
pair = vec_max(a, vec_sld(a, a, 8));
//quad = { Max(a0, a4, a2, a6), Max(a1, a5, a3, a7) }
quad = vec_max(pair, vec_sld(pair, pair, 4));
//octo = { Max(a0, a4, a2, a6, a1, a5, a3, a7) }
octo = vec_max(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE unsigned short int predux_max<Packet8us>(const Packet8us& a)
{
Packet8us pair, quad, octo;
//pair = { Max(a0,a4), Max(a1,a5), Max(a2,a6), Max(a3,a7) }
pair = vec_max(a, vec_sld(a, a, 8));
//quad = { Max(a0, a4, a2, a6), Max(a1, a5, a3, a7) }
quad = vec_max(pair, vec_sld(pair, pair, 4));
//octo = { Max(a0, a4, a2, a6, a1, a5, a3, a7) }
octo = vec_max(quad, vec_sld(quad, quad, 2));
return pfirst(octo);
}
template<> EIGEN_STRONG_INLINE signed char predux_max<Packet16c>(const Packet16c& a)
{
Packet16c pair, quad, octo, result;
pair = vec_max(a, vec_sld(a, a, 8));
quad = vec_max(pair, vec_sld(pair, pair, 4));
octo = vec_max(quad, vec_sld(quad, quad, 2));
result = vec_max(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
template<> EIGEN_STRONG_INLINE unsigned char predux_max<Packet16uc>(const Packet16uc& a)
{
Packet16uc pair, quad, octo, result;
pair = vec_max(a, vec_sld(a, a, 8));
quad = vec_max(pair, vec_sld(pair, pair, 4));
octo = vec_max(quad, vec_sld(quad, quad, 2));
result = vec_max(octo, vec_sld(octo, octo, 1));
return pfirst(result);
}
template<> EIGEN_STRONG_INLINE bool predux_any(const Packet4f& x)
{
return vec_any_ne(x, pzero(x));
}
template <typename T> EIGEN_DEVICE_FUNC inline void
ptranpose_common(PacketBlock<T,4>& kernel){
T 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<Packet4f,4>& kernel) {
ptranpose_common<Packet4f>(kernel);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet4i,4>& kernel) {
ptranpose_common<Packet4i>(kernel);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet8s,4>& kernel) {
Packet8s 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<Packet8us,4>& kernel) {
Packet8us 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<Packet8bf,4>& kernel) {
Packet8us t0, t1, t2, t3;
t0 = vec_mergeh(kernel.packet[0].m_val, kernel.packet[2].m_val);
t1 = vec_mergel(kernel.packet[0].m_val, kernel.packet[2].m_val);
t2 = vec_mergeh(kernel.packet[1].m_val, kernel.packet[3].m_val);
t3 = vec_mergel(kernel.packet[1].m_val, kernel.packet[3].m_val);
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<Packet16c,4>& kernel) {
Packet16c 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<Packet16uc,4>& kernel) {
Packet16uc 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<Packet8s,8>& kernel) {
Packet8s v[8], sum[8];
v[0] = vec_mergeh(kernel.packet[0], kernel.packet[4]);
v[1] = vec_mergel(kernel.packet[0], kernel.packet[4]);
v[2] = vec_mergeh(kernel.packet[1], kernel.packet[5]);
v[3] = vec_mergel(kernel.packet[1], kernel.packet[5]);
v[4] = vec_mergeh(kernel.packet[2], kernel.packet[6]);
v[5] = vec_mergel(kernel.packet[2], kernel.packet[6]);
v[6] = vec_mergeh(kernel.packet[3], kernel.packet[7]);
v[7] = vec_mergel(kernel.packet[3], kernel.packet[7]);
sum[0] = vec_mergeh(v[0], v[4]);
sum[1] = vec_mergel(v[0], v[4]);
sum[2] = vec_mergeh(v[1], v[5]);
sum[3] = vec_mergel(v[1], v[5]);
sum[4] = vec_mergeh(v[2], v[6]);
sum[5] = vec_mergel(v[2], v[6]);
sum[6] = vec_mergeh(v[3], v[7]);
sum[7] = vec_mergel(v[3], v[7]);
kernel.packet[0] = vec_mergeh(sum[0], sum[4]);
kernel.packet[1] = vec_mergel(sum[0], sum[4]);
kernel.packet[2] = vec_mergeh(sum[1], sum[5]);
kernel.packet[3] = vec_mergel(sum[1], sum[5]);
kernel.packet[4] = vec_mergeh(sum[2], sum[6]);
kernel.packet[5] = vec_mergel(sum[2], sum[6]);
kernel.packet[6] = vec_mergeh(sum[3], sum[7]);
kernel.packet[7] = vec_mergel(sum[3], sum[7]);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet8us,8>& kernel) {
Packet8us v[8], sum[8];
v[0] = vec_mergeh(kernel.packet[0], kernel.packet[4]);
v[1] = vec_mergel(kernel.packet[0], kernel.packet[4]);
v[2] = vec_mergeh(kernel.packet[1], kernel.packet[5]);
v[3] = vec_mergel(kernel.packet[1], kernel.packet[5]);
v[4] = vec_mergeh(kernel.packet[2], kernel.packet[6]);
v[5] = vec_mergel(kernel.packet[2], kernel.packet[6]);
v[6] = vec_mergeh(kernel.packet[3], kernel.packet[7]);
v[7] = vec_mergel(kernel.packet[3], kernel.packet[7]);
sum[0] = vec_mergeh(v[0], v[4]);
sum[1] = vec_mergel(v[0], v[4]);
sum[2] = vec_mergeh(v[1], v[5]);
sum[3] = vec_mergel(v[1], v[5]);
sum[4] = vec_mergeh(v[2], v[6]);
sum[5] = vec_mergel(v[2], v[6]);
sum[6] = vec_mergeh(v[3], v[7]);
sum[7] = vec_mergel(v[3], v[7]);
kernel.packet[0] = vec_mergeh(sum[0], sum[4]);
kernel.packet[1] = vec_mergel(sum[0], sum[4]);
kernel.packet[2] = vec_mergeh(sum[1], sum[5]);
kernel.packet[3] = vec_mergel(sum[1], sum[5]);
kernel.packet[4] = vec_mergeh(sum[2], sum[6]);
kernel.packet[5] = vec_mergel(sum[2], sum[6]);
kernel.packet[6] = vec_mergeh(sum[3], sum[7]);
kernel.packet[7] = vec_mergel(sum[3], sum[7]);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet8bf,8>& kernel) {
Packet8bf v[8], sum[8];
v[0] = vec_mergeh(kernel.packet[0].m_val, kernel.packet[4].m_val);
v[1] = vec_mergel(kernel.packet[0].m_val, kernel.packet[4].m_val);
v[2] = vec_mergeh(kernel.packet[1].m_val, kernel.packet[5].m_val);
v[3] = vec_mergel(kernel.packet[1].m_val, kernel.packet[5].m_val);
v[4] = vec_mergeh(kernel.packet[2].m_val, kernel.packet[6].m_val);
v[5] = vec_mergel(kernel.packet[2].m_val, kernel.packet[6].m_val);
v[6] = vec_mergeh(kernel.packet[3].m_val, kernel.packet[7].m_val);
v[7] = vec_mergel(kernel.packet[3].m_val, kernel.packet[7].m_val);
sum[0] = vec_mergeh(v[0].m_val, v[4].m_val);
sum[1] = vec_mergel(v[0].m_val, v[4].m_val);
sum[2] = vec_mergeh(v[1].m_val, v[5].m_val);
sum[3] = vec_mergel(v[1].m_val, v[5].m_val);
sum[4] = vec_mergeh(v[2].m_val, v[6].m_val);
sum[5] = vec_mergel(v[2].m_val, v[6].m_val);
sum[6] = vec_mergeh(v[3].m_val, v[7].m_val);
sum[7] = vec_mergel(v[3].m_val, v[7].m_val);
kernel.packet[0] = vec_mergeh(sum[0].m_val, sum[4].m_val);
kernel.packet[1] = vec_mergel(sum[0].m_val, sum[4].m_val);
kernel.packet[2] = vec_mergeh(sum[1].m_val, sum[5].m_val);
kernel.packet[3] = vec_mergel(sum[1].m_val, sum[5].m_val);
kernel.packet[4] = vec_mergeh(sum[2].m_val, sum[6].m_val);
kernel.packet[5] = vec_mergel(sum[2].m_val, sum[6].m_val);
kernel.packet[6] = vec_mergeh(sum[3].m_val, sum[7].m_val);
kernel.packet[7] = vec_mergel(sum[3].m_val, sum[7].m_val);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet16c,16>& kernel) {
Packet16c step1[16], step2[16], step3[16];
step1[0] = vec_mergeh(kernel.packet[0], kernel.packet[8]);
step1[1] = vec_mergel(kernel.packet[0], kernel.packet[8]);
step1[2] = vec_mergeh(kernel.packet[1], kernel.packet[9]);
step1[3] = vec_mergel(kernel.packet[1], kernel.packet[9]);
step1[4] = vec_mergeh(kernel.packet[2], kernel.packet[10]);
step1[5] = vec_mergel(kernel.packet[2], kernel.packet[10]);
step1[6] = vec_mergeh(kernel.packet[3], kernel.packet[11]);
step1[7] = vec_mergel(kernel.packet[3], kernel.packet[11]);
step1[8] = vec_mergeh(kernel.packet[4], kernel.packet[12]);
step1[9] = vec_mergel(kernel.packet[4], kernel.packet[12]);
step1[10] = vec_mergeh(kernel.packet[5], kernel.packet[13]);
step1[11] = vec_mergel(kernel.packet[5], kernel.packet[13]);
step1[12] = vec_mergeh(kernel.packet[6], kernel.packet[14]);
step1[13] = vec_mergel(kernel.packet[6], kernel.packet[14]);
step1[14] = vec_mergeh(kernel.packet[7], kernel.packet[15]);
step1[15] = vec_mergel(kernel.packet[7], kernel.packet[15]);
step2[0] = vec_mergeh(step1[0], step1[8]);
step2[1] = vec_mergel(step1[0], step1[8]);
step2[2] = vec_mergeh(step1[1], step1[9]);
step2[3] = vec_mergel(step1[1], step1[9]);
step2[4] = vec_mergeh(step1[2], step1[10]);
step2[5] = vec_mergel(step1[2], step1[10]);
step2[6] = vec_mergeh(step1[3], step1[11]);
step2[7] = vec_mergel(step1[3], step1[11]);
step2[8] = vec_mergeh(step1[4], step1[12]);
step2[9] = vec_mergel(step1[4], step1[12]);
step2[10] = vec_mergeh(step1[5], step1[13]);
step2[11] = vec_mergel(step1[5], step1[13]);
step2[12] = vec_mergeh(step1[6], step1[14]);
step2[13] = vec_mergel(step1[6], step1[14]);
step2[14] = vec_mergeh(step1[7], step1[15]);
step2[15] = vec_mergel(step1[7], step1[15]);
step3[0] = vec_mergeh(step2[0], step2[8]);
step3[1] = vec_mergel(step2[0], step2[8]);
step3[2] = vec_mergeh(step2[1], step2[9]);
step3[3] = vec_mergel(step2[1], step2[9]);
step3[4] = vec_mergeh(step2[2], step2[10]);
step3[5] = vec_mergel(step2[2], step2[10]);
step3[6] = vec_mergeh(step2[3], step2[11]);
step3[7] = vec_mergel(step2[3], step2[11]);
step3[8] = vec_mergeh(step2[4], step2[12]);
step3[9] = vec_mergel(step2[4], step2[12]);
step3[10] = vec_mergeh(step2[5], step2[13]);
step3[11] = vec_mergel(step2[5], step2[13]);
step3[12] = vec_mergeh(step2[6], step2[14]);
step3[13] = vec_mergel(step2[6], step2[14]);
step3[14] = vec_mergeh(step2[7], step2[15]);
step3[15] = vec_mergel(step2[7], step2[15]);
kernel.packet[0] = vec_mergeh(step3[0], step3[8]);
kernel.packet[1] = vec_mergel(step3[0], step3[8]);
kernel.packet[2] = vec_mergeh(step3[1], step3[9]);
kernel.packet[3] = vec_mergel(step3[1], step3[9]);
kernel.packet[4] = vec_mergeh(step3[2], step3[10]);
kernel.packet[5] = vec_mergel(step3[2], step3[10]);
kernel.packet[6] = vec_mergeh(step3[3], step3[11]);
kernel.packet[7] = vec_mergel(step3[3], step3[11]);
kernel.packet[8] = vec_mergeh(step3[4], step3[12]);
kernel.packet[9] = vec_mergel(step3[4], step3[12]);
kernel.packet[10] = vec_mergeh(step3[5], step3[13]);
kernel.packet[11] = vec_mergel(step3[5], step3[13]);
kernel.packet[12] = vec_mergeh(step3[6], step3[14]);
kernel.packet[13] = vec_mergel(step3[6], step3[14]);
kernel.packet[14] = vec_mergeh(step3[7], step3[15]);
kernel.packet[15] = vec_mergel(step3[7], step3[15]);
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet16uc,16>& kernel) {
Packet16uc step1[16], step2[16], step3[16];
step1[0] = vec_mergeh(kernel.packet[0], kernel.packet[8]);
step1[1] = vec_mergel(kernel.packet[0], kernel.packet[8]);
step1[2] = vec_mergeh(kernel.packet[1], kernel.packet[9]);
step1[3] = vec_mergel(kernel.packet[1], kernel.packet[9]);
step1[4] = vec_mergeh(kernel.packet[2], kernel.packet[10]);
step1[5] = vec_mergel(kernel.packet[2], kernel.packet[10]);
step1[6] = vec_mergeh(kernel.packet[3], kernel.packet[11]);
step1[7] = vec_mergel(kernel.packet[3], kernel.packet[11]);
step1[8] = vec_mergeh(kernel.packet[4], kernel.packet[12]);
step1[9] = vec_mergel(kernel.packet[4], kernel.packet[12]);
step1[10] = vec_mergeh(kernel.packet[5], kernel.packet[13]);
step1[11] = vec_mergel(kernel.packet[5], kernel.packet[13]);
step1[12] = vec_mergeh(kernel.packet[6], kernel.packet[14]);
step1[13] = vec_mergel(kernel.packet[6], kernel.packet[14]);
step1[14] = vec_mergeh(kernel.packet[7], kernel.packet[15]);
step1[15] = vec_mergel(kernel.packet[7], kernel.packet[15]);
step2[0] = vec_mergeh(step1[0], step1[8]);
step2[1] = vec_mergel(step1[0], step1[8]);
step2[2] = vec_mergeh(step1[1], step1[9]);
step2[3] = vec_mergel(step1[1], step1[9]);
step2[4] = vec_mergeh(step1[2], step1[10]);
step2[5] = vec_mergel(step1[2], step1[10]);
step2[6] = vec_mergeh(step1[3], step1[11]);
step2[7] = vec_mergel(step1[3], step1[11]);
step2[8] = vec_mergeh(step1[4], step1[12]);
step2[9] = vec_mergel(step1[4], step1[12]);
step2[10] = vec_mergeh(step1[5], step1[13]);
step2[11] = vec_mergel(step1[5], step1[13]);
step2[12] = vec_mergeh(step1[6], step1[14]);
step2[13] = vec_mergel(step1[6], step1[14]);
step2[14] = vec_mergeh(step1[7], step1[15]);
step2[15] = vec_mergel(step1[7], step1[15]);
step3[0] = vec_mergeh(step2[0], step2[8]);
step3[1] = vec_mergel(step2[0], step2[8]);
step3[2] = vec_mergeh(step2[1], step2[9]);
step3[3] = vec_mergel(step2[1], step2[9]);
step3[4] = vec_mergeh(step2[2], step2[10]);
step3[5] = vec_mergel(step2[2], step2[10]);
step3[6] = vec_mergeh(step2[3], step2[11]);
step3[7] = vec_mergel(step2[3], step2[11]);
step3[8] = vec_mergeh(step2[4], step2[12]);
step3[9] = vec_mergel(step2[4], step2[12]);
step3[10] = vec_mergeh(step2[5], step2[13]);
step3[11] = vec_mergel(step2[5], step2[13]);
step3[12] = vec_mergeh(step2[6], step2[14]);
step3[13] = vec_mergel(step2[6], step2[14]);
step3[14] = vec_mergeh(step2[7], step2[15]);
step3[15] = vec_mergel(step2[7], step2[15]);
kernel.packet[0] = vec_mergeh(step3[0], step3[8]);
kernel.packet[1] = vec_mergel(step3[0], step3[8]);
kernel.packet[2] = vec_mergeh(step3[1], step3[9]);
kernel.packet[3] = vec_mergel(step3[1], step3[9]);
kernel.packet[4] = vec_mergeh(step3[2], step3[10]);
kernel.packet[5] = vec_mergel(step3[2], step3[10]);
kernel.packet[6] = vec_mergeh(step3[3], step3[11]);
kernel.packet[7] = vec_mergel(step3[3], step3[11]);
kernel.packet[8] = vec_mergeh(step3[4], step3[12]);
kernel.packet[9] = vec_mergel(step3[4], step3[12]);
kernel.packet[10] = vec_mergeh(step3[5], step3[13]);
kernel.packet[11] = vec_mergel(step3[5], step3[13]);
kernel.packet[12] = vec_mergeh(step3[6], step3[14]);
kernel.packet[13] = vec_mergel(step3[6], step3[14]);
kernel.packet[14] = vec_mergeh(step3[7], step3[15]);
kernel.packet[15] = vec_mergel(step3[7], step3[15]);
}
template<typename Packet> EIGEN_STRONG_INLINE
Packet pblend4(const Selector<4>& ifPacket, const Packet& thenPacket, const Packet& elsePacket) {
Packet4ui select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3] };
#ifdef __POWER8_VECTOR__
Packet4ui mask = reinterpret_cast<Packet4ui>(vec_neg(reinterpret_cast<Packet4i>(select)));
#else
Packet4ui mask = reinterpret_cast<Packet4ui>(vec_cmpeq(reinterpret_cast<Packet4ui>(select), reinterpret_cast<Packet4ui>(p4i_ONE)));
#endif
return vec_sel(elsePacket, thenPacket, mask);
}
template<> EIGEN_STRONG_INLINE Packet4i pblend(const Selector<4>& ifPacket, const Packet4i& thenPacket, const Packet4i& elsePacket) {
return pblend4<Packet4i>(ifPacket, thenPacket, elsePacket);
}
template<> EIGEN_STRONG_INLINE Packet4f pblend(const Selector<4>& ifPacket, const Packet4f& thenPacket, const Packet4f& elsePacket) {
return pblend4<Packet4f>(ifPacket, thenPacket, elsePacket);
}
template<> EIGEN_STRONG_INLINE Packet8s pblend(const Selector<8>& ifPacket, const Packet8s& thenPacket, const Packet8s& elsePacket) {
Packet8us select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3],
ifPacket.select[4], ifPacket.select[5], ifPacket.select[6], ifPacket.select[7] };
#ifdef __POWER8_VECTOR__
Packet8us mask = reinterpret_cast<Packet8us>(vec_neg(reinterpret_cast<Packet8s>(select)));
#else
Packet8us mask = reinterpret_cast<Packet8us>(vec_cmpeq(select, p8us_ONE));
#endif
Packet8s result = vec_sel(elsePacket, thenPacket, mask);
return result;
}
template<> EIGEN_STRONG_INLINE Packet8us pblend(const Selector<8>& ifPacket, const Packet8us& thenPacket, const Packet8us& elsePacket) {
Packet8us select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3],
ifPacket.select[4], ifPacket.select[5], ifPacket.select[6], ifPacket.select[7] };
#ifdef __POWER8_VECTOR__
Packet8us mask = reinterpret_cast<Packet8us>(vec_neg(reinterpret_cast<Packet8s>(select)));
#else
Packet8us mask = reinterpret_cast<Packet8us>(vec_cmpeq(reinterpret_cast<Packet8us>(select), p8us_ONE));
#endif
return vec_sel(elsePacket, thenPacket, mask);
}
template<> EIGEN_STRONG_INLINE Packet8bf pblend(const Selector<8>& ifPacket, const Packet8bf& thenPacket, const Packet8bf& elsePacket) {
return pblend<Packet8us>(ifPacket, thenPacket, elsePacket);
}
template<> EIGEN_STRONG_INLINE Packet16c pblend(const Selector<16>& ifPacket, const Packet16c& thenPacket, const Packet16c& elsePacket) {
Packet16uc select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3],
ifPacket.select[4], ifPacket.select[5], ifPacket.select[6], ifPacket.select[7],
ifPacket.select[8], ifPacket.select[9], ifPacket.select[10], ifPacket.select[11],
ifPacket.select[12], ifPacket.select[13], ifPacket.select[14], ifPacket.select[15] };
#ifdef __POWER8_VECTOR__
Packet16uc mask = reinterpret_cast<Packet16uc>(vec_neg(reinterpret_cast<Packet16c>(select)));
#else
Packet16uc mask = reinterpret_cast<Packet16uc>(vec_cmpeq(reinterpret_cast<Packet16uc>(select), p16uc_ONE));
#endif
return vec_sel(elsePacket, thenPacket, mask);
}
template<> EIGEN_STRONG_INLINE Packet16uc pblend(const Selector<16>& ifPacket, const Packet16uc& thenPacket, const Packet16uc& elsePacket) {
Packet16uc select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], ifPacket.select[3],
ifPacket.select[4], ifPacket.select[5], ifPacket.select[6], ifPacket.select[7],
ifPacket.select[8], ifPacket.select[9], ifPacket.select[10], ifPacket.select[11],
ifPacket.select[12], ifPacket.select[13], ifPacket.select[14], ifPacket.select[15] };
#ifdef __POWER8_VECTOR__
Packet16uc mask = reinterpret_cast<Packet16uc>(vec_neg(reinterpret_cast<Packet16c>(select)));
#else
Packet16uc mask = reinterpret_cast<Packet16uc>(vec_cmpeq(reinterpret_cast<Packet16uc>(select), p16uc_ONE));
#endif
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 <>
struct type_casting_traits<bfloat16, unsigned short int> {
enum {
VectorizedCast = 1,
SrcCoeffRatio = 1,
TgtCoeffRatio = 1
};
};
template <>
struct type_casting_traits<unsigned short int, bfloat16> {
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 Packet4ui pcast<Packet4f, Packet4ui>(const Packet4f& a) {
return vec_ctu(a,0);
}
template<> EIGEN_STRONG_INLINE Packet4f pcast<Packet4i, Packet4f>(const Packet4i& a) {
return vec_ctf(a,0);
}
template<> EIGEN_STRONG_INLINE Packet4f pcast<Packet4ui, Packet4f>(const Packet4ui& a) {
return vec_ctf(a,0);
}
template<> EIGEN_STRONG_INLINE Packet8us pcast<Packet8bf, Packet8us>(const Packet8bf& a) {
Packet4f float_even = Bf16ToF32Even(a);
Packet4f float_odd = Bf16ToF32Odd(a);
Packet4ui int_even = pcast<Packet4f, Packet4ui>(float_even);
Packet4ui int_odd = pcast<Packet4f, Packet4ui>(float_odd);
const EIGEN_DECLARE_CONST_FAST_Packet4ui(low_mask, 0x0000FFFF);
Packet4ui low_even = pand<Packet4ui>(int_even, p4ui_low_mask);
Packet4ui low_odd = pand<Packet4ui>(int_odd, p4ui_low_mask);
//Check values that are bigger than USHRT_MAX (0xFFFF)
Packet4bi overflow_selector;
if(vec_any_gt(int_even, p4ui_low_mask)){
overflow_selector = vec_cmpgt(int_even, p4ui_low_mask);
low_even = vec_sel(low_even, p4ui_low_mask, overflow_selector);
}
if(vec_any_gt(int_odd, p4ui_low_mask)){
overflow_selector = vec_cmpgt(int_odd, p4ui_low_mask);
low_odd = vec_sel(low_even, p4ui_low_mask, overflow_selector);
}
low_odd = plogical_shift_left<16>(low_odd);
Packet4ui int_final = por<Packet4ui>(low_even, low_odd);
return reinterpret_cast<Packet8us>(int_final);
}
template<> EIGEN_STRONG_INLINE Packet8bf pcast<Packet8us, Packet8bf>(const Packet8us& a) {
//short -> int -> float -> bfloat16
const EIGEN_DECLARE_CONST_FAST_Packet4ui(low_mask, 0x0000FFFF);
Packet4ui int_cast = reinterpret_cast<Packet4ui>(a);
Packet4ui int_even = pand<Packet4ui>(int_cast, p4ui_low_mask);
Packet4ui int_odd = plogical_shift_right<16>(int_cast);
Packet4f float_even = pcast<Packet4ui, Packet4f>(int_even);
Packet4f float_odd = pcast<Packet4ui, Packet4f>(int_odd);
return F32ToBf16(float_even, float_odd);
}
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 Packet2ul p2ul_SIGN = { 0x8000000000000000ull, 0x8000000000000000ull };
static Packet2ul p2ul_PREV0DOT5 = { 0x3FDFFFFFFFFFFFFFull, 0x3FDFFFFFFFFFFFFFull };
static Packet2d p2d_ONE = { 1.0, 1.0 };
static Packet2d p2d_ZERO = reinterpret_cast<Packet2d>(p4f_ZERO);
static Packet2d p2d_MZERO = { numext::bit_cast<double>(0x8000000000000000ull),
numext::bit_cast<double>(0x8000000000000000ull) };
#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)
{
return vec_splat(a, index);
}
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,
HasRint = 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
return vec_xl(0, const_cast<double *>(from)); // cast needed by Clang
}
template<> EIGEN_STRONG_INLINE void pstore<double>(double* to, const Packet2d& from)
{
EIGEN_DEBUG_ALIGNED_STORE
vec_xst(from, 0, to);
}
template<> EIGEN_STRONG_INLINE Packet2d pset1<Packet2d>(const double& from) {
Packet2d v = {from, from};
return v;
}
template<> EIGEN_STRONG_INLINE Packet2d pset1frombits<Packet2d>(unsigned long from) {
Packet2l v = {static_cast<long long>(from), static_cast<long long>(from)};
return reinterpret_cast<Packet2d>(v);
}
template<> EIGEN_STRONG_INLINE void
pbroadcast4<Packet2d>(const double *a,
Packet2d& a0, Packet2d& a1, Packet2d& a2, Packet2d& a3)
{
//This way is faster than vec_splat (at least for doubles in Power 9)
a0 = pset1<Packet2d>(a[0]);
a1 = pset1<Packet2d>(a[1]);
a2 = pset1<Packet2d>(a[2]);
a3 = pset1<Packet2d>(a[3]);
}
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)
{
#ifdef __POWER8_VECTOR__
return vec_neg(a);
#else
return p2d_ZERO - a;
#endif
}
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 pmsub(const Packet2d& a, const Packet2d& b, const Packet2d& c) { return vec_msub(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet2d pnmadd(const Packet2d& a, const Packet2d& b, const Packet2d& c) { return vec_nmsub(a,b,c); }
template<> EIGEN_STRONG_INLINE Packet2d pnmsub(const Packet2d& a, const Packet2d& b, const Packet2d& c) { return vec_nmadd(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 pcmp_le(const Packet2d& a, const Packet2d& b) { return reinterpret_cast<Packet2d>(vec_cmple(a,b)); }
template<> EIGEN_STRONG_INLINE Packet2d pcmp_lt(const Packet2d& a, const Packet2d& b) { return reinterpret_cast<Packet2d>(vec_cmplt(a,b)); }
template<> EIGEN_STRONG_INLINE Packet2d pcmp_eq(const Packet2d& a, const Packet2d& b) { return reinterpret_cast<Packet2d>(vec_cmpeq(a,b)); }
template<> EIGEN_STRONG_INLINE Packet2d pcmp_lt_or_nan(const Packet2d& a, const Packet2d& b) {
Packet2d c = reinterpret_cast<Packet2d>(vec_cmpge(a,b));
return vec_nor(c,c);
}
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)
{
Packet2d t = vec_add(reinterpret_cast<Packet2d>(vec_or(vec_and(reinterpret_cast<Packet2ul>(a), p2ul_SIGN), p2ul_PREV0DOT5)), a);
Packet2d res;
__asm__("xvrdpiz %x0, %x1\n\t"
: "=&wa" (res)
: "wa" (t));
return res;
}
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 print<Packet2d>(const Packet2d& a)
{
Packet2d res;
__asm__("xvrdpic %x0, %x1\n\t"
: "=&wa" (res)
: "wa" (a));
return res;
}
template<> EIGEN_STRONG_INLINE Packet2d ploadu<Packet2d>(const double* from)
{
EIGEN_DEBUG_UNALIGNED_LOAD
return vec_xl(0, const_cast<double*>(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_UNALIGNED_STORE
vec_xst(from, 0, 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 vec_sld(a, a, 8);
}
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
template<>
inline Packet2l pcast<Packet2d, Packet2l>(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<>
inline Packet2d pcast<Packet2l, Packet2d>(const Packet2l& x) {
unsigned long long tmp[2];
memcpy(tmp, &x, sizeof(tmp));
Packet2d d = { static_cast<double>(tmp[0]),
static_cast<double>(tmp[1]) };
return d;
}
// Packet2l shifts.
// For POWER8 we simply use vec_sr/l.
//
// Things are more complicated for POWER7. There is actually a
// vec_xxsxdi intrinsic but it is not supported by some gcc versions.
// So we need to shift by N % 32 and rearrage bytes.
#ifdef __POWER8_VECTOR__
template<int N>
EIGEN_STRONG_INLINE Packet2l plogical_shift_left(const Packet2l& a) {
const Packet2ul shift = { N, N };
return vec_sl(a, shift);
}
template<int N>
EIGEN_STRONG_INLINE Packet2l plogical_shift_right(const Packet2l& a) {
const Packet2ul shift = { N, N };
return vec_sr(a, shift);
}
#else
// Shifts [A, B, C, D] to [B, 0, D, 0].
// Used to implement left shifts for Packet2l.
EIGEN_ALWAYS_INLINE Packet4i shift_even_left(const Packet4i& a) {
static const Packet16uc perm = {
0x14, 0x15, 0x16, 0x17, 0x00, 0x01, 0x02, 0x03,
0x1c, 0x1d, 0x1e, 0x1f, 0x08, 0x09, 0x0a, 0x0b };
#ifdef _BIG_ENDIAN
return vec_perm(p4i_ZERO, a, perm);
#else
return vec_perm(a, p4i_ZERO, perm);
#endif
}
// Shifts [A, B, C, D] to [0, A, 0, C].
// Used to implement right shifts for Packet2l.
EIGEN_ALWAYS_INLINE Packet4i shift_odd_right(const Packet4i& a) {
static const Packet16uc perm = {
0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13,
0x0c, 0x0d, 0x0e, 0x0f, 0x18, 0x19, 0x1a, 0x1b };
#ifdef _BIG_ENDIAN
return vec_perm(p4i_ZERO, a, perm);
#else
return vec_perm(a, p4i_ZERO, perm);
#endif
}
template<int N, typename EnableIf = void>
struct plogical_shift_left_impl;
template<int N>
struct plogical_shift_left_impl<N, std::enable_if_t<(N < 32) && (N >= 0)>> {
static EIGEN_STRONG_INLINE Packet2l run(const Packet2l& a) {
static const unsigned n = static_cast<unsigned>(N);
const Packet4ui shift = {n, n, n, n};
const Packet4i ai = reinterpret_cast<Packet4i>(a);
static const unsigned m = static_cast<unsigned>(32 - N);
const Packet4ui shift_right = {m, m, m, m};
const Packet4i out_hi = vec_sl(ai, shift);
const Packet4i out_lo = shift_even_left(vec_sr(ai, shift_right));
return reinterpret_cast<Packet2l>(por<Packet4i>(out_hi, out_lo));
}
};
template<int N>
struct plogical_shift_left_impl<N, std::enable_if_t<(N >= 32)>> {
static EIGEN_STRONG_INLINE Packet2l run(const Packet2l& a) {
static const unsigned m = static_cast<unsigned>(N - 32);
const Packet4ui shift = {m, m, m, m};
const Packet4i ai = reinterpret_cast<Packet4i>(a);
return reinterpret_cast<Packet2l>(shift_even_left(vec_sl(ai, shift)));
}
};
template<int N>
EIGEN_STRONG_INLINE Packet2l plogical_shift_left(const Packet2l& a) {
return plogical_shift_left_impl<N>::run(a);
}
template<int N, typename EnableIf = void>
struct plogical_shift_right_impl;
template<int N>
struct plogical_shift_right_impl<N, std::enable_if_t<(N < 32) && (N >= 0)>> {
static EIGEN_STRONG_INLINE Packet2l run(const Packet2l& a) {
static const unsigned n = static_cast<unsigned>(N);
const Packet4ui shift = {n, n, n, n};
const Packet4i ai = reinterpret_cast<Packet4i>(a);
static const unsigned m = static_cast<unsigned>(32 - N);
const Packet4ui shift_left = {m, m, m, m};
const Packet4i out_lo = vec_sr(ai, shift);
const Packet4i out_hi = shift_odd_right(vec_sl(ai, shift_left));
return reinterpret_cast<Packet2l>(por<Packet4i>(out_hi, out_lo));
}
};
template<int N>
struct plogical_shift_right_impl<N, std::enable_if_t<(N >= 32)>> {
static EIGEN_STRONG_INLINE Packet2l run(const Packet2l& a) {
static const unsigned m = static_cast<unsigned>(N - 32);
const Packet4ui shift = {m, m, m, m};
const Packet4i ai = reinterpret_cast<Packet4i>(a);
return reinterpret_cast<Packet2l>(shift_odd_right(vec_sr(ai, shift)));
}
};
template<int N>
EIGEN_STRONG_INLINE Packet2l plogical_shift_right(const Packet2l& a) {
return plogical_shift_right_impl<N>::run(a);
}
#endif
template<> EIGEN_STRONG_INLINE Packet2d pldexp<Packet2d>(const Packet2d& a, const Packet2d& exponent) {
// Clamp exponent to [-2099, 2099]
const Packet2d max_exponent = pset1<Packet2d>(2099.0);
const Packet2l e = pcast<Packet2d, Packet2l>(pmin(pmax(exponent, pnegate(max_exponent)), max_exponent));
// Split 2^e into four factors and multiply:
const Packet2l bias = { 1023, 1023 };
Packet2l b = plogical_shift_right<2>(e); // floor(e/4)
Packet2d c = reinterpret_cast<Packet2d>(plogical_shift_left<52>(b + bias));
Packet2d out = pmul(pmul(pmul(a, c), c), c); // a * 2^(3b)
b = psub(psub(psub(e, b), b), b); // e - 3b
c = reinterpret_cast<Packet2d>(plogical_shift_left<52>(b + bias)); // 2^(e - 3b)
out = pmul(out, c); // a * 2^e
return out;
}
// Extract exponent without existence of Packet2l.
template<>
EIGEN_STRONG_INLINE
Packet2d pfrexp_generic_get_biased_exponent(const Packet2d& a) {
return pcast<Packet2l, Packet2d>(plogical_shift_right<52>(reinterpret_cast<Packet2l>(pabs(a))));
}
template<> EIGEN_STRONG_INLINE Packet2d pfrexp<Packet2d> (const Packet2d& a, Packet2d& exponent) {
return pfrexp_generic(a, exponent);
}
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);
}
// 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))));
}
EIGEN_DEVICE_FUNC inline void
ptranspose(PacketBlock<Packet2d,2>& kernel) {
Packet2d t0, t1;
t0 = vec_mergeh(kernel.packet[0], kernel.packet[1]);
t1 = vec_mergel(kernel.packet[0], kernel.packet[1]);
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