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Diffstat (limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorArgMaxSycl.h')
-rw-r--r-- | unsupported/Eigen/CXX11/src/Tensor/TensorArgMaxSycl.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorArgMaxSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorArgMaxSycl.h new file mode 100644 index 000000000..8f76b8254 --- /dev/null +++ b/unsupported/Eigen/CXX11/src/Tensor/TensorArgMaxSycl.h @@ -0,0 +1,146 @@ +// 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/. + +/***************************************************************** + * TensorArgMaxSycl.h + * \brief: + * TensorArgMaxSycl + * +*****************************************************************/ + +#ifndef UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_ARGMAX_SYCL_HPP +#define UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_ARGMAX_SYCL_HPP +namespace Eigen { +namespace internal { + template<typename Dims, typename XprType> + struct eval<TensorTupleReducerDeviceOp<Dims, XprType>, Eigen::Dense> + { + typedef const TensorTupleReducerDeviceOp<Dims, XprType>& type; + }; + + template<typename Dims, typename XprType> + struct nested<TensorTupleReducerDeviceOp<Dims, XprType>, 1, + typename eval<TensorTupleReducerDeviceOp<Dims, XprType> >::type> + { + typedef TensorTupleReducerDeviceOp<Dims, XprType> type; + }; + +template<typename StrideDims, typename XprType> +struct traits<TensorTupleReducerDeviceOp<StrideDims, XprType> > : public traits<XprType> +{ + typedef traits<XprType> XprTraits; + typedef typename XprTraits::StorageKind StorageKind; + typedef typename XprTraits::Index Index; + typedef typename XprType::Scalar Scalar; + typedef typename XprType::Nested Nested; + typedef typename remove_reference<Nested>::type _Nested; + static const int NumDimensions = XprTraits::NumDimensions; + static const int Layout = XprTraits::Layout; +}; + + +}// end namespace internal +template<typename StrideDims, typename XprType> +class TensorTupleReducerDeviceOp : public TensorBase<TensorTupleReducerDeviceOp<StrideDims, XprType>, ReadOnlyAccessors> +{ + public: + typedef typename Eigen::internal::traits<TensorTupleReducerDeviceOp>::Scalar Scalar; + typedef typename Eigen::NumTraits<Scalar>::Real RealScalar; + typedef typename Eigen::internal::nested<TensorTupleReducerDeviceOp>::type Nested; + typedef typename Eigen::internal::traits<TensorTupleReducerDeviceOp>::StorageKind StorageKind; + typedef typename Eigen::internal::traits<TensorTupleReducerDeviceOp>::Index Index; + typedef typename XprType::CoeffReturnType CoeffReturnType; + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorTupleReducerDeviceOp(XprType expr, + const Index return_dim, + const StrideDims strides, + const Index stride_mod, const Index stride_div) + :m_xpr(expr), m_return_dim(return_dim), m_strides(strides), m_stride_mod(stride_mod), m_stride_div(stride_div) {} + + EIGEN_DEVICE_FUNC + const typename internal::remove_all<typename XprType::Nested>::type& + expression() const { return m_xpr; } + + EIGEN_DEVICE_FUNC + Index return_dim() const { return m_return_dim; } + + EIGEN_DEVICE_FUNC + const StrideDims& strides() const { return m_strides; } + + EIGEN_DEVICE_FUNC + const Index& stride_mod() const { return m_stride_mod; } + + EIGEN_DEVICE_FUNC + const Index& stride_div() const { return m_stride_div; } + + protected: + typename Eigen::internal::remove_all<typename + XprType::Nested + >::type m_xpr; + const Index m_return_dim; + const StrideDims m_strides; + const Index m_stride_mod; + const Index m_stride_div; +}; + + +// Eval as rvalue +template<typename StrideDims, typename ArgType> +struct TensorEvaluator<const TensorTupleReducerDeviceOp<StrideDims, ArgType>, SyclKernelDevice> +{ + typedef TensorTupleReducerDeviceOp<StrideDims, ArgType> XprType; + typedef typename XprType::Index Index; + typedef typename XprType::Index Scalar; + typedef Index CoeffReturnType; + typedef typename XprType::CoeffReturnType TupleType; + typedef typename TensorEvaluator<ArgType, SyclKernelDevice>::Dimensions Dimensions; + + enum { + IsAligned = false, + PacketAccess = false, + BlockAccess = false, + Layout = TensorEvaluator<ArgType, SyclKernelDevice>::Layout, + CoordAccess = false, + RawAccess = false + }; + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorEvaluator(const XprType& op, const SyclKernelDevice& device) + : m_impl(op.expression(), device), m_return_dim(op.return_dim()), m_strides(op.strides()), m_stride_mod(op.stride_mod()), + m_stride_div(op.stride_div()){} + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const Dimensions& dimensions() const { + return m_impl.dimensions(); + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded(Scalar*) { + m_impl.evalSubExprsIfNeeded(NULL); + return true; + } + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() { + m_impl.cleanup(); + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const { + const TupleType v = m_impl.coeff(index); + return (m_return_dim < 0) ? v.first : (v.first % m_stride_mod) / m_stride_div; + } +typedef typename MakeGlobalPointer<typename TensorEvaluator<ArgType , SyclKernelDevice>::CoeffReturnType >::Type ptr_Dev_type; + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ptr_Dev_type data() const { return const_cast<ptr_Dev_type>(m_impl.data()); } + +protected: + TensorEvaluator<ArgType , SyclKernelDevice> m_impl; + const Index m_return_dim; + const StrideDims m_strides; + const Index m_stride_mod; + const Index m_stride_div; +}; +} // end namespace Eigen +#endif //UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_ARGMAX_SYCL_HPP |