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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
//
//
// 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_FP16_AVX512_H
#define EIGEN_PACKET_MATH_FP16_AVX512_H
// IWYU pragma: private
#include "../../InternalHeaderCheck.h"
namespace Eigen {
namespace internal {
typedef __m512h Packet32h;
typedef eigen_packet_wrapper<__m256i, 1> Packet16h;
typedef eigen_packet_wrapper<__m128i, 2> Packet8h;
template <>
struct is_arithmetic<Packet8h> {
enum { value = true };
};
template <>
struct packet_traits<half> : default_packet_traits {
typedef Packet32h type;
typedef Packet16h half;
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = 32,
HasCmp = 1,
HasAdd = 1,
HasSub = 1,
HasMul = 1,
HasDiv = 1,
HasNegate = 1,
HasAbs = 1,
HasAbs2 = 0,
HasMin = 1,
HasMax = 1,
HasConj = 1,
HasSetLinear = 0,
HasLog = 1,
HasLog1p = 1,
HasExp = 1,
HasExpm1 = 1,
HasSqrt = 1,
HasRsqrt = 1,
// These ones should be implemented in future
HasBessel = 0,
HasNdtri = 0,
HasSin = EIGEN_FAST_MATH,
HasCos = EIGEN_FAST_MATH,
HasTanh = EIGEN_FAST_MATH,
HasErf = 0, // EIGEN_FAST_MATH,
HasBlend = 0,
HasRound = 1,
HasFloor = 1,
HasCeil = 1,
HasRint = 1
};
};
template <>
struct unpacket_traits<Packet32h> {
typedef Eigen::half type;
typedef Packet16h half;
enum {
size = 32,
alignment = Aligned64,
vectorizable = true,
masked_load_available = false,
masked_store_available = false
};
};
template <>
struct unpacket_traits<Packet16h> {
typedef Eigen::half type;
typedef Packet8h half;
enum {
size = 16,
alignment = Aligned32,
vectorizable = true,
masked_load_available = false,
masked_store_available = false
};
};
template <>
struct unpacket_traits<Packet8h> {
typedef Eigen::half type;
typedef Packet8h half;
enum {
size = 8,
alignment = Aligned16,
vectorizable = true,
masked_load_available = false,
masked_store_available = false
};
};
// Memory functions
// pset1
template <>
EIGEN_STRONG_INLINE Packet32h pset1<Packet32h>(const Eigen::half& from) {
return _mm512_set1_ph(static_cast<_Float16>(from));
}
// pset1frombits
template <>
EIGEN_STRONG_INLINE Packet32h pset1frombits<Packet32h>(unsigned short from) {
return _mm512_castsi512_ph(_mm512_set1_epi16(from));
}
// pfirst
template <>
EIGEN_STRONG_INLINE Eigen::half pfirst<Packet32h>(const Packet32h& from) {
#ifdef EIGEN_VECTORIZE_AVX512DQ
return half_impl::raw_uint16_to_half(
static_cast<unsigned short>(_mm256_extract_epi16(_mm512_extracti32x8_epi32(_mm512_castph_si512(from), 0), 0)));
#else
Eigen::half dest[32];
_mm512_storeu_ph(dest, from);
return dest[0];
#endif
}
// pload
template <>
EIGEN_STRONG_INLINE Packet32h pload<Packet32h>(const Eigen::half* from) {
EIGEN_DEBUG_ALIGNED_LOAD return _mm512_load_ph(from);
}
// ploadu
template <>
EIGEN_STRONG_INLINE Packet32h ploadu<Packet32h>(const Eigen::half* from) {
EIGEN_DEBUG_UNALIGNED_LOAD return _mm512_loadu_ph(from);
}
// pstore
template <>
EIGEN_STRONG_INLINE void pstore<half>(Eigen::half* to, const Packet32h& from) {
EIGEN_DEBUG_ALIGNED_STORE _mm512_store_ph(to, from);
}
// pstoreu
template <>
EIGEN_STRONG_INLINE void pstoreu<half>(Eigen::half* to, const Packet32h& from) {
EIGEN_DEBUG_UNALIGNED_STORE _mm512_storeu_ph(to, from);
}
// ploaddup
template <>
EIGEN_STRONG_INLINE Packet32h ploaddup<Packet32h>(const Eigen::half* from) {
__m512h a = _mm512_castph256_ph512(_mm256_loadu_ph(from));
return _mm512_permutexvar_ph(_mm512_set_epi16(15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6,
5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 0, 0),
a);
}
// ploadquad
template <>
EIGEN_STRONG_INLINE Packet32h ploadquad<Packet32h>(const Eigen::half* from) {
__m512h a = _mm512_castph128_ph512(_mm_loadu_ph(from));
return _mm512_permutexvar_ph(
_mm512_set_epi16(7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0),
a);
}
// pabs
template <>
EIGEN_STRONG_INLINE Packet32h pabs<Packet32h>(const Packet32h& a) {
return _mm512_abs_ph(a);
}
// psignbit
template <>
EIGEN_STRONG_INLINE Packet32h psignbit<Packet32h>(const Packet32h& a) {
return _mm512_castsi512_ph(_mm512_srai_epi16(_mm512_castph_si512(a), 15));
}
// pmin
template <>
EIGEN_STRONG_INLINE Packet32h pmin<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_min_ph(a, b);
}
// pmax
template <>
EIGEN_STRONG_INLINE Packet32h pmax<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_max_ph(a, b);
}
// plset
template <>
EIGEN_STRONG_INLINE Packet32h plset<Packet32h>(const half& a) {
return _mm512_add_ph(_mm512_set1_ph(a),
_mm512_set_ph(31.0f, 30.0f, 29.0f, 28.0f, 27.0f, 26.0f, 25.0f, 24.0f, 23.0f, 22.0f, 21.0f, 20.0f,
19.0f, 18.0f, 17.0f, 16.0f, 15.0f, 14.0f, 13.0f, 12.0f, 11.0f, 10.0f, 9.0f, 8.0f,
7.0f, 6.0f, 5.0f, 4.0f, 3.0f, 2.0f, 1.0f, 0.0f));
}
// por
template <>
EIGEN_STRONG_INLINE Packet32h por(const Packet32h& a, const Packet32h& b) {
return _mm512_castsi512_ph(_mm512_or_si512(_mm512_castph_si512(a), _mm512_castph_si512(b)));
}
// pxor
template <>
EIGEN_STRONG_INLINE Packet32h pxor(const Packet32h& a, const Packet32h& b) {
return _mm512_castsi512_ph(_mm512_xor_si512(_mm512_castph_si512(a), _mm512_castph_si512(b)));
}
// pand
template <>
EIGEN_STRONG_INLINE Packet32h pand(const Packet32h& a, const Packet32h& b) {
return _mm512_castsi512_ph(_mm512_and_si512(_mm512_castph_si512(a), _mm512_castph_si512(b)));
}
// pandnot
template <>
EIGEN_STRONG_INLINE Packet32h pandnot(const Packet32h& a, const Packet32h& b) {
return _mm512_castsi512_ph(_mm512_andnot_si512(_mm512_castph_si512(b), _mm512_castph_si512(a)));
}
// pselect
template <>
EIGEN_DEVICE_FUNC inline Packet32h pselect(const Packet32h& mask, const Packet32h& a, const Packet32h& b) {
__mmask32 mask32 = _mm512_cmp_epi16_mask(_mm512_castph_si512(mask), _mm512_setzero_epi32(), _MM_CMPINT_EQ);
return _mm512_mask_blend_ph(mask32, a, b);
}
// pcmp_eq
template <>
EIGEN_STRONG_INLINE Packet32h pcmp_eq(const Packet32h& a, const Packet32h& b) {
__mmask32 mask = _mm512_cmp_ph_mask(a, b, _CMP_EQ_OQ);
return _mm512_castsi512_ph(_mm512_mask_set1_epi16(_mm512_set1_epi32(0), mask, 0xffffu));
}
// pcmp_le
template <>
EIGEN_STRONG_INLINE Packet32h pcmp_le(const Packet32h& a, const Packet32h& b) {
__mmask32 mask = _mm512_cmp_ph_mask(a, b, _CMP_LE_OQ);
return _mm512_castsi512_ph(_mm512_mask_set1_epi16(_mm512_set1_epi32(0), mask, 0xffffu));
}
// pcmp_lt
template <>
EIGEN_STRONG_INLINE Packet32h pcmp_lt(const Packet32h& a, const Packet32h& b) {
__mmask32 mask = _mm512_cmp_ph_mask(a, b, _CMP_LT_OQ);
return _mm512_castsi512_ph(_mm512_mask_set1_epi16(_mm512_set1_epi32(0), mask, 0xffffu));
}
// pcmp_lt_or_nan
template <>
EIGEN_STRONG_INLINE Packet32h pcmp_lt_or_nan(const Packet32h& a, const Packet32h& b) {
__mmask32 mask = _mm512_cmp_ph_mask(a, b, _CMP_NGE_UQ);
return _mm512_castsi512_ph(_mm512_mask_set1_epi16(_mm512_set1_epi16(0), mask, 0xffffu));
}
// padd
template <>
EIGEN_STRONG_INLINE Packet32h padd<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_add_ph(a, b);
}
template <>
EIGEN_STRONG_INLINE Packet16h padd<Packet16h>(const Packet16h& a, const Packet16h& b) {
return _mm256_castph_si256(_mm256_add_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b)));
}
template <>
EIGEN_STRONG_INLINE Packet8h padd<Packet8h>(const Packet8h& a, const Packet8h& b) {
return _mm_castph_si128(_mm_add_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b)));
}
// psub
template <>
EIGEN_STRONG_INLINE Packet32h psub<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_sub_ph(a, b);
}
template <>
EIGEN_STRONG_INLINE Packet16h psub<Packet16h>(const Packet16h& a, const Packet16h& b) {
return _mm256_castph_si256(_mm256_sub_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b)));
}
template <>
EIGEN_STRONG_INLINE Packet8h psub<Packet8h>(const Packet8h& a, const Packet8h& b) {
return _mm_castph_si128(_mm_sub_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b)));
}
// pmul
template <>
EIGEN_STRONG_INLINE Packet32h pmul<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_mul_ph(a, b);
}
template <>
EIGEN_STRONG_INLINE Packet16h pmul<Packet16h>(const Packet16h& a, const Packet16h& b) {
return _mm256_castph_si256(_mm256_mul_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pmul<Packet8h>(const Packet8h& a, const Packet8h& b) {
return _mm_castph_si128(_mm_mul_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b)));
}
// pdiv
template <>
EIGEN_STRONG_INLINE Packet32h pdiv<Packet32h>(const Packet32h& a, const Packet32h& b) {
return _mm512_div_ph(a, b);
}
template <>
EIGEN_STRONG_INLINE Packet16h pdiv<Packet16h>(const Packet16h& a, const Packet16h& b) {
return _mm256_castph_si256(_mm256_div_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pdiv<Packet8h>(const Packet8h& a, const Packet8h& b) {
return _mm_castph_si128(_mm_div_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b)));
}
// pround
template <>
EIGEN_STRONG_INLINE Packet32h pround<Packet32h>(const Packet32h& a) {
// Work-around for default std::round rounding mode.
// Mask for the sign bit
const Packet32h signMask = pset1frombits<Packet32h>(static_cast<numext::uint16_t>(0x8000u));
// The largest half-preicision float less than 0.5
const Packet32h prev0dot5 = pset1frombits<Packet32h>(static_cast<numext::uint16_t>(0x37FFu));
return _mm512_roundscale_ph(padd(por(pand(a, signMask), prev0dot5), a), _MM_FROUND_TO_ZERO);
}
// print
template <>
EIGEN_STRONG_INLINE Packet32h print<Packet32h>(const Packet32h& a) {
return _mm512_roundscale_ph(a, _MM_FROUND_CUR_DIRECTION);
}
// pceil
template <>
EIGEN_STRONG_INLINE Packet32h pceil<Packet32h>(const Packet32h& a) {
return _mm512_roundscale_ph(a, _MM_FROUND_TO_POS_INF);
}
// pfloor
template <>
EIGEN_STRONG_INLINE Packet32h pfloor<Packet32h>(const Packet32h& a) {
return _mm512_roundscale_ph(a, _MM_FROUND_TO_NEG_INF);
}
// predux
template <>
EIGEN_STRONG_INLINE half predux<Packet32h>(const Packet32h& a) {
return (half)_mm512_reduce_add_ph(a);
}
template <>
EIGEN_STRONG_INLINE half predux<Packet16h>(const Packet16h& a) {
return (half)_mm256_reduce_add_ph(_mm256_castsi256_ph(a));
}
template <>
EIGEN_STRONG_INLINE half predux<Packet8h>(const Packet8h& a) {
return (half)_mm_reduce_add_ph(_mm_castsi128_ph(a));
}
// predux_half_dowto4
template <>
EIGEN_STRONG_INLINE Packet16h predux_half_dowto4<Packet32h>(const Packet32h& a) {
#ifdef EIGEN_VECTORIZE_AVX512DQ
__m256i lowHalf = _mm256_castps_si256(_mm512_extractf32x8_ps(_mm512_castph_ps(a), 0));
__m256i highHalf = _mm256_castps_si256(_mm512_extractf32x8_ps(_mm512_castph_ps(a), 1));
return Packet16h(padd<Packet16h>(lowHalf, highHalf));
#else
Eigen::half data[32];
_mm512_storeu_ph(data, a);
__m256i lowHalf = _mm256_castph_si256(_mm256_loadu_ph(data));
__m256i highHalf = _mm256_castph_si256(_mm256_loadu_ph(data + 16));
return Packet16h(padd<Packet16h>(lowHalf, highHalf));
#endif
}
// predux_max
// predux_min
// predux_mul
#ifdef EIGEN_VECTORIZE_FMA
// pmadd
template <>
EIGEN_STRONG_INLINE Packet32h pmadd(const Packet32h& a, const Packet32h& b, const Packet32h& c) {
return _mm512_fmadd_ph(a, b, c);
}
template <>
EIGEN_STRONG_INLINE Packet16h pmadd(const Packet16h& a, const Packet16h& b, const Packet16h& c) {
return _mm256_castph_si256(_mm256_fmadd_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b), _mm256_castsi256_ph(c)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pmadd(const Packet8h& a, const Packet8h& b, const Packet8h& c) {
return _mm_castph_si128(_mm_fmadd_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b), _mm_castsi128_ph(c)));
}
// pmsub
template <>
EIGEN_STRONG_INLINE Packet32h pmsub(const Packet32h& a, const Packet32h& b, const Packet32h& c) {
return _mm512_fmsub_ph(a, b, c);
}
template <>
EIGEN_STRONG_INLINE Packet16h pmsub(const Packet16h& a, const Packet16h& b, const Packet16h& c) {
return _mm256_castph_si256(_mm256_fmsub_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b), _mm256_castsi256_ph(c)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pmsub(const Packet8h& a, const Packet8h& b, const Packet8h& c) {
return _mm_castph_si128(_mm_fmsub_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b), _mm_castsi128_ph(c)));
}
// pnmadd
template <>
EIGEN_STRONG_INLINE Packet32h pnmadd(const Packet32h& a, const Packet32h& b, const Packet32h& c) {
return _mm512_fnmadd_ph(a, b, c);
}
template <>
EIGEN_STRONG_INLINE Packet16h pnmadd(const Packet16h& a, const Packet16h& b, const Packet16h& c) {
return _mm256_castph_si256(_mm256_fnmadd_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b), _mm256_castsi256_ph(c)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pnmadd(const Packet8h& a, const Packet8h& b, const Packet8h& c) {
return _mm_castph_si128(_mm_fnmadd_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b), _mm_castsi128_ph(c)));
}
// pnmsub
template <>
EIGEN_STRONG_INLINE Packet32h pnmsub(const Packet32h& a, const Packet32h& b, const Packet32h& c) {
return _mm512_fnmsub_ph(a, b, c);
}
template <>
EIGEN_STRONG_INLINE Packet16h pnmsub(const Packet16h& a, const Packet16h& b, const Packet16h& c) {
return _mm256_castph_si256(_mm256_fnmsub_ph(_mm256_castsi256_ph(a), _mm256_castsi256_ph(b), _mm256_castsi256_ph(c)));
}
template <>
EIGEN_STRONG_INLINE Packet8h pnmsub(const Packet8h& a, const Packet8h& b, const Packet8h& c) {
return _mm_castph_si128(_mm_fnmsub_ph(_mm_castsi128_ph(a), _mm_castsi128_ph(b), _mm_castsi128_ph(c)));
}
#endif
// pnegate
template <>
EIGEN_STRONG_INLINE Packet32h pnegate<Packet32h>(const Packet32h& a) {
return _mm512_sub_ph(_mm512_set1_ph(0.0), a);
}
// pconj
template <>
EIGEN_STRONG_INLINE Packet32h pconj<Packet32h>(const Packet32h& a) {
return a;
}
// psqrt
template <>
EIGEN_STRONG_INLINE Packet32h psqrt<Packet32h>(const Packet32h& a) {
return _mm512_sqrt_ph(a);
}
// prsqrt
template <>
EIGEN_STRONG_INLINE Packet32h prsqrt<Packet32h>(const Packet32h& a) {
return _mm512_rsqrt_ph(a);
}
// preciprocal
template <>
EIGEN_STRONG_INLINE Packet32h preciprocal<Packet32h>(const Packet32h& a) {
return _mm512_rcp_ph(a);
}
// ptranspose
EIGEN_DEVICE_FUNC inline void ptranspose(PacketBlock<Packet32h, 32>& a) {
__m512i t[32];
EIGEN_UNROLL_LOOP
for (int i = 0; i < 16; i++) {
t[2 * i] = _mm512_unpacklo_epi16(_mm512_castph_si512(a.packet[2 * i]), _mm512_castph_si512(a.packet[2 * i + 1]));
t[2 * i + 1] =
_mm512_unpackhi_epi16(_mm512_castph_si512(a.packet[2 * i]), _mm512_castph_si512(a.packet[2 * i + 1]));
}
__m512i p[32];
EIGEN_UNROLL_LOOP
for (int i = 0; i < 8; i++) {
p[4 * i] = _mm512_unpacklo_epi32(t[4 * i], t[4 * i + 2]);
p[4 * i + 1] = _mm512_unpackhi_epi32(t[4 * i], t[4 * i + 2]);
p[4 * i + 2] = _mm512_unpacklo_epi32(t[4 * i + 1], t[4 * i + 3]);
p[4 * i + 3] = _mm512_unpackhi_epi32(t[4 * i + 1], t[4 * i + 3]);
}
__m512i q[32];
EIGEN_UNROLL_LOOP
for (int i = 0; i < 4; i++) {
q[8 * i] = _mm512_unpacklo_epi64(p[8 * i], p[8 * i + 4]);
q[8 * i + 1] = _mm512_unpackhi_epi64(p[8 * i], p[8 * i + 4]);
q[8 * i + 2] = _mm512_unpacklo_epi64(p[8 * i + 1], p[8 * i + 5]);
q[8 * i + 3] = _mm512_unpackhi_epi64(p[8 * i + 1], p[8 * i + 5]);
q[8 * i + 4] = _mm512_unpacklo_epi64(p[8 * i + 2], p[8 * i + 6]);
q[8 * i + 5] = _mm512_unpackhi_epi64(p[8 * i + 2], p[8 * i + 6]);
q[8 * i + 6] = _mm512_unpacklo_epi64(p[8 * i + 3], p[8 * i + 7]);
q[8 * i + 7] = _mm512_unpackhi_epi64(p[8 * i + 3], p[8 * i + 7]);
}
__m512i f[32];
#define PACKET32H_TRANSPOSE_HELPER(X, Y) \
do { \
f[Y * 8] = _mm512_inserti32x4(f[Y * 8], _mm512_extracti32x4_epi32(q[X * 8], Y), X); \
f[Y * 8 + 1] = _mm512_inserti32x4(f[Y * 8 + 1], _mm512_extracti32x4_epi32(q[X * 8 + 1], Y), X); \
f[Y * 8 + 2] = _mm512_inserti32x4(f[Y * 8 + 2], _mm512_extracti32x4_epi32(q[X * 8 + 2], Y), X); \
f[Y * 8 + 3] = _mm512_inserti32x4(f[Y * 8 + 3], _mm512_extracti32x4_epi32(q[X * 8 + 3], Y), X); \
f[Y * 8 + 4] = _mm512_inserti32x4(f[Y * 8 + 4], _mm512_extracti32x4_epi32(q[X * 8 + 4], Y), X); \
f[Y * 8 + 5] = _mm512_inserti32x4(f[Y * 8 + 5], _mm512_extracti32x4_epi32(q[X * 8 + 5], Y), X); \
f[Y * 8 + 6] = _mm512_inserti32x4(f[Y * 8 + 6], _mm512_extracti32x4_epi32(q[X * 8 + 6], Y), X); \
f[Y * 8 + 7] = _mm512_inserti32x4(f[Y * 8 + 7], _mm512_extracti32x4_epi32(q[X * 8 + 7], Y), X); \
} while (false);
PACKET32H_TRANSPOSE_HELPER(0, 0);
PACKET32H_TRANSPOSE_HELPER(1, 1);
PACKET32H_TRANSPOSE_HELPER(2, 2);
PACKET32H_TRANSPOSE_HELPER(3, 3);
PACKET32H_TRANSPOSE_HELPER(1, 0);
PACKET32H_TRANSPOSE_HELPER(2, 0);
PACKET32H_TRANSPOSE_HELPER(3, 0);
PACKET32H_TRANSPOSE_HELPER(2, 1);
PACKET32H_TRANSPOSE_HELPER(3, 1);
PACKET32H_TRANSPOSE_HELPER(3, 2);
PACKET32H_TRANSPOSE_HELPER(0, 1);
PACKET32H_TRANSPOSE_HELPER(0, 2);
PACKET32H_TRANSPOSE_HELPER(0, 3);
PACKET32H_TRANSPOSE_HELPER(1, 2);
PACKET32H_TRANSPOSE_HELPER(1, 3);
PACKET32H_TRANSPOSE_HELPER(2, 3);
#undef PACKET32H_TRANSPOSE_HELPER
EIGEN_UNROLL_LOOP
for (int i = 0; i < 32; i++) {
a.packet[i] = _mm512_castsi512_ph(f[i]);
}
}
EIGEN_DEVICE_FUNC inline void ptranspose(PacketBlock<Packet32h, 4>& a) {
__m512i p0, p1, p2, p3, t0, t1, t2, t3, a0, a1, a2, a3;
t0 = _mm512_unpacklo_epi16(_mm512_castph_si512(a.packet[0]), _mm512_castph_si512(a.packet[1]));
t1 = _mm512_unpackhi_epi16(_mm512_castph_si512(a.packet[0]), _mm512_castph_si512(a.packet[1]));
t2 = _mm512_unpacklo_epi16(_mm512_castph_si512(a.packet[2]), _mm512_castph_si512(a.packet[3]));
t3 = _mm512_unpackhi_epi16(_mm512_castph_si512(a.packet[2]), _mm512_castph_si512(a.packet[3]));
p0 = _mm512_unpacklo_epi32(t0, t2);
p1 = _mm512_unpackhi_epi32(t0, t2);
p2 = _mm512_unpacklo_epi32(t1, t3);
p3 = _mm512_unpackhi_epi32(t1, t3);
a0 = p0;
a1 = p1;
a2 = p2;
a3 = p3;
a0 = _mm512_inserti32x4(a0, _mm512_extracti32x4_epi32(p1, 0), 1);
a1 = _mm512_inserti32x4(a1, _mm512_extracti32x4_epi32(p0, 1), 0);
a0 = _mm512_inserti32x4(a0, _mm512_extracti32x4_epi32(p2, 0), 2);
a2 = _mm512_inserti32x4(a2, _mm512_extracti32x4_epi32(p0, 2), 0);
a0 = _mm512_inserti32x4(a0, _mm512_extracti32x4_epi32(p3, 0), 3);
a3 = _mm512_inserti32x4(a3, _mm512_extracti32x4_epi32(p0, 3), 0);
a1 = _mm512_inserti32x4(a1, _mm512_extracti32x4_epi32(p2, 1), 2);
a2 = _mm512_inserti32x4(a2, _mm512_extracti32x4_epi32(p1, 2), 1);
a2 = _mm512_inserti32x4(a2, _mm512_extracti32x4_epi32(p3, 2), 3);
a3 = _mm512_inserti32x4(a3, _mm512_extracti32x4_epi32(p2, 3), 2);
a1 = _mm512_inserti32x4(a1, _mm512_extracti32x4_epi32(p3, 1), 3);
a3 = _mm512_inserti32x4(a3, _mm512_extracti32x4_epi32(p1, 3), 1);
a.packet[0] = _mm512_castsi512_ph(a0);
a.packet[1] = _mm512_castsi512_ph(a1);
a.packet[2] = _mm512_castsi512_ph(a2);
a.packet[3] = _mm512_castsi512_ph(a3);
}
// preverse
template <>
EIGEN_STRONG_INLINE Packet32h preverse(const Packet32h& a) {
return _mm512_permutexvar_ph(_mm512_set_epi16(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31),
a);
}
// pscatter
template <>
EIGEN_STRONG_INLINE void pscatter<half, Packet32h>(half* to, const Packet32h& from, Index stride) {
EIGEN_ALIGN64 half aux[32];
pstore(aux, from);
EIGEN_UNROLL_LOOP
for (int i = 0; i < 32; i++) {
to[stride * i] = aux[i];
}
}
// pgather
template <>
EIGEN_STRONG_INLINE Packet32h pgather<Eigen::half, Packet32h>(const Eigen::half* from, Index stride) {
return _mm512_castsi512_ph(_mm512_set_epi16(
from[31 * stride].x, from[30 * stride].x, from[29 * stride].x, from[28 * stride].x, from[27 * stride].x,
from[26 * stride].x, from[25 * stride].x, from[24 * stride].x, from[23 * stride].x, from[22 * stride].x,
from[21 * stride].x, from[20 * stride].x, from[19 * stride].x, from[18 * stride].x, from[17 * stride].x,
from[16 * stride].x, from[15 * stride].x, from[14 * stride].x, from[13 * stride].x, from[12 * stride].x,
from[11 * stride].x, from[10 * stride].x, from[9 * stride].x, from[8 * stride].x, from[7 * stride].x,
from[6 * stride].x, from[5 * stride].x, from[4 * stride].x, from[3 * stride].x, from[2 * stride].x,
from[1 * stride].x, from[0 * stride].x));
}
template <>
EIGEN_STRONG_INLINE Packet16h pcos<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h psin<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h plog<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h plog2<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h plog1p<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h pexp<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h pexpm1<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h ptanh<Packet16h>(const Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h pfrexp<Packet16h>(const Packet16h&, Packet16h&);
template <>
EIGEN_STRONG_INLINE Packet16h pldexp<Packet16h>(const Packet16h&, const Packet16h&);
EIGEN_STRONG_INLINE Packet32h combine2Packet16h(const Packet16h& a, const Packet16h& b) {
__m512d result = _mm512_undefined_pd();
result = _mm512_insertf64x4(result, _mm256_castsi256_pd(a), 0);
result = _mm512_insertf64x4(result, _mm256_castsi256_pd(b), 1);
return _mm512_castpd_ph(result);
}
EIGEN_STRONG_INLINE void extract2Packet16h(const Packet32h& x, Packet16h& a, Packet16h& b) {
a = _mm256_castpd_si256(_mm512_extractf64x4_pd(_mm512_castph_pd(x), 0));
b = _mm256_castpd_si256(_mm512_extractf64x4_pd(_mm512_castph_pd(x), 1));
}
// psin
template <>
EIGEN_STRONG_INLINE Packet32h psin<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = psin(low);
Packet16h highOut = psin(high);
return combine2Packet16h(lowOut, highOut);
}
// pcos
template <>
EIGEN_STRONG_INLINE Packet32h pcos<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = pcos(low);
Packet16h highOut = pcos(high);
return combine2Packet16h(lowOut, highOut);
}
// plog
template <>
EIGEN_STRONG_INLINE Packet32h plog<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = plog(low);
Packet16h highOut = plog(high);
return combine2Packet16h(lowOut, highOut);
}
// plog2
template <>
EIGEN_STRONG_INLINE Packet32h plog2<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = plog2(low);
Packet16h highOut = plog2(high);
return combine2Packet16h(lowOut, highOut);
}
// plog1p
template <>
EIGEN_STRONG_INLINE Packet32h plog1p<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = plog1p(low);
Packet16h highOut = plog1p(high);
return combine2Packet16h(lowOut, highOut);
}
// pexp
template <>
EIGEN_STRONG_INLINE Packet32h pexp<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = pexp(low);
Packet16h highOut = pexp(high);
return combine2Packet16h(lowOut, highOut);
}
// pexpm1
template <>
EIGEN_STRONG_INLINE Packet32h pexpm1<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = pexpm1(low);
Packet16h highOut = pexpm1(high);
return combine2Packet16h(lowOut, highOut);
}
// ptanh
template <>
EIGEN_STRONG_INLINE Packet32h ptanh<Packet32h>(const Packet32h& a) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h lowOut = ptanh(low);
Packet16h highOut = ptanh(high);
return combine2Packet16h(lowOut, highOut);
}
// pfrexp
template <>
EIGEN_STRONG_INLINE Packet32h pfrexp<Packet32h>(const Packet32h& a, Packet32h& exponent) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h exp1 = _mm256_undefined_si256();
Packet16h exp2 = _mm256_undefined_si256();
Packet16h lowOut = pfrexp(low, exp1);
Packet16h highOut = pfrexp(high, exp2);
exponent = combine2Packet16h(exp1, exp2);
return combine2Packet16h(lowOut, highOut);
}
// pldexp
template <>
EIGEN_STRONG_INLINE Packet32h pldexp<Packet32h>(const Packet32h& a, const Packet32h& exponent) {
Packet16h low;
Packet16h high;
extract2Packet16h(a, low, high);
Packet16h exp1;
Packet16h exp2;
extract2Packet16h(exponent, exp1, exp2);
Packet16h lowOut = pldexp(low, exp1);
Packet16h highOut = pldexp(high, exp2);
return combine2Packet16h(lowOut, highOut);
}
} // end namespace internal
} // end namespace Eigen
#endif // EIGEN_PACKET_MATH_FP16_AVX512_H