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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Mehdi Goli Codeplay Software Ltd.
// Ralph Potter Codeplay Software Ltd.
// Luke Iwanski Codeplay Software Ltd.
// Contact: <eigen@codeplay.com>
//
// 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/.
/*****************************************************************
* InteropHeaders.h
*
* \brief:
* InteropHeaders
*
*****************************************************************/
#ifndef EIGEN_INTEROP_HEADERS_SYCL_H
#define EIGEN_INTEROP_HEADERS_SYCL_H
namespace Eigen {
#if !defined(EIGEN_DONT_VECTORIZE_SYCL)
namespace internal {
template <int has_blend, int lengths>
struct sycl_packet_traits : default_packet_traits {
enum {
Vectorizable = 1,
AlignedOnScalar = 1,
size = lengths,
HasHalfPacket = 0,
HasDiv = 1,
HasLog = 1,
HasExp = 1,
HasSqrt = 1,
HasRsqrt = 1,
HasSin = 1,
HasCos = 1,
HasTan = 1,
HasASin = 1,
HasACos = 1,
HasATan = 1,
HasSinh = 1,
HasCosh = 1,
HasTanh = 1,
HasLGamma = 0,
HasDiGamma = 0,
HasZeta = 0,
HasPolygamma = 0,
HasErf = 0,
HasErfc = 0,
HasNdtri = 0,
HasIGamma = 0,
HasIGammac = 0,
HasBetaInc = 0,
HasBlend = has_blend,
// This flag is used to indicate whether packet comparison is supported.
// pcmp_eq, pcmp_lt and pcmp_le should be defined for it to be true.
HasCmp = 1,
HasMax = 1,
HasMin = 1,
HasMul = 1,
HasAdd = 1,
HasFloor = 1,
HasRound = 1,
HasRint = 1,
HasLog1p = 1,
HasExpm1 = 1,
HasCeil = 1,
};
};
#ifdef SYCL_DEVICE_ONLY
#define SYCL_PACKET_TRAITS(packet_type, has_blend, unpacket_type, lengths) \
template <> \
struct packet_traits<unpacket_type> \
: sycl_packet_traits<has_blend, lengths> { \
typedef packet_type type; \
typedef packet_type half; \
};
SYCL_PACKET_TRAITS(cl::sycl::cl_float4, 1, float, 4)
SYCL_PACKET_TRAITS(cl::sycl::cl_float4, 1, const float, 4)
SYCL_PACKET_TRAITS(cl::sycl::cl_double2, 0, double, 2)
SYCL_PACKET_TRAITS(cl::sycl::cl_double2, 0, const double, 2)
#undef SYCL_PACKET_TRAITS
// Make sure this is only available when targeting a GPU: we don't want to
// introduce conflicts between these packet_traits definitions and the ones
// we'll use on the host side (SSE, AVX, ...)
#define SYCL_ARITHMETIC(packet_type) \
template <> \
struct is_arithmetic<packet_type> { \
enum { value = true }; \
};
SYCL_ARITHMETIC(cl::sycl::cl_float4)
SYCL_ARITHMETIC(cl::sycl::cl_double2)
#undef SYCL_ARITHMETIC
#define SYCL_UNPACKET_TRAITS(packet_type, unpacket_type, lengths) \
template <> \
struct unpacket_traits<packet_type> { \
typedef unpacket_type type; \
enum { size = lengths, vectorizable = true, alignment = Aligned16 }; \
typedef packet_type half; \
};
SYCL_UNPACKET_TRAITS(cl::sycl::cl_float4, float, 4)
SYCL_UNPACKET_TRAITS(cl::sycl::cl_double2, double, 2)
#undef SYCL_UNPACKET_TRAITS
#endif
} // end namespace internal
#endif
namespace TensorSycl {
namespace internal {
template <typename PacketReturnType, int PacketSize>
struct PacketWrapper;
// This function should never get called on the device
#ifndef SYCL_DEVICE_ONLY
template <typename PacketReturnType, int PacketSize>
struct PacketWrapper {
typedef typename ::Eigen::internal::unpacket_traits<PacketReturnType>::type
Scalar;
template <typename Index>
EIGEN_DEVICE_FUNC static Scalar scalarize(Index, PacketReturnType &) {
eigen_assert(false && "THERE IS NO PACKETIZE VERSION FOR THE CHOSEN TYPE");
abort();
}
EIGEN_DEVICE_FUNC static PacketReturnType convert_to_packet_type(Scalar in,
Scalar) {
return ::Eigen::internal::template plset<PacketReturnType>(in);
}
EIGEN_DEVICE_FUNC static void set_packet(PacketReturnType, Scalar *) {
eigen_assert(false && "THERE IS NO PACKETIZE VERSION FOR THE CHOSEN TYPE");
abort();
}
};
#elif defined(SYCL_DEVICE_ONLY)
template <typename PacketReturnType>
struct PacketWrapper<PacketReturnType, 4> {
typedef typename ::Eigen::internal::unpacket_traits<PacketReturnType>::type
Scalar;
template <typename Index>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static Scalar scalarize(Index index, PacketReturnType &in) {
switch (index) {
case 0:
return in.x();
case 1:
return in.y();
case 2:
return in.z();
case 3:
return in.w();
default:
//INDEX MUST BE BETWEEN 0 and 3.There is no abort function in SYCL kernel. so we cannot use abort here.
// The code will never reach here
__builtin_unreachable();
}
__builtin_unreachable();
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static PacketReturnType convert_to_packet_type(
Scalar in, Scalar other) {
return PacketReturnType(in, other, other, other);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static void set_packet(PacketReturnType &lhs, Scalar *rhs) {
lhs = PacketReturnType(rhs[0], rhs[1], rhs[2], rhs[3]);
}
};
template <typename PacketReturnType>
struct PacketWrapper<PacketReturnType, 1> {
typedef typename ::Eigen::internal::unpacket_traits<PacketReturnType>::type
Scalar;
template <typename Index>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static Scalar scalarize(Index, PacketReturnType &in) {
return in;
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static PacketReturnType convert_to_packet_type(Scalar in,
Scalar) {
return PacketReturnType(in);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static void set_packet(PacketReturnType &lhs, Scalar *rhs) {
lhs = rhs[0];
}
};
template <typename PacketReturnType>
struct PacketWrapper<PacketReturnType, 2> {
typedef typename ::Eigen::internal::unpacket_traits<PacketReturnType>::type
Scalar;
template <typename Index>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static Scalar scalarize(Index index, PacketReturnType &in) {
switch (index) {
case 0:
return in.x();
case 1:
return in.y();
default:
//INDEX MUST BE BETWEEN 0 and 1.There is no abort function in SYCL kernel. so we cannot use abort here.
// The code will never reach here
__builtin_unreachable();
}
__builtin_unreachable();
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static PacketReturnType convert_to_packet_type(
Scalar in, Scalar other) {
return PacketReturnType(in, other);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE static void set_packet(PacketReturnType &lhs, Scalar *rhs) {
lhs = PacketReturnType(rhs[0], rhs[1]);
}
};
#endif
} // end namespace internal
} // end namespace TensorSycl
} // end namespace Eigen
#endif // EIGEN_INTEROP_HEADERS_SYCL_H
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