Reworked the expression evaluation mechanism in order to make it possible to efficiently compute convolutions and contractions in the future:

 * The scheduling of computation is moved out the the assignment code and into a new TensorExecutor class
 * The assignment itself is now a regular node on the expression tree
 * The expression evaluators start by recursively evaluating all their subexpressions if needed

1 files changed, 4 insertions, 1 deletions

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
index 27bfe1d73..c0dffbd0c 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
@@ -25,13 +25,16 @@ template<typename XprType> class TensorReductionOp;
 template<typename Dimensions, typename LeftXprType, typename RightXprType> class TensorContractionOp;
 template<typename Dimensions, typename InputXprType, typename KernelXprType> class TensorConvolutionOp;
 template<typename NewDimensions, typename XprType> class TensorReshapingOp;
+template<typename LeftXprType, typename RightXprType> class TensorAssignOp;
+
+template<typename XprType> class TensorEvalToOp;
 template<typename XprType> class TensorForcedEvalOp;
 
 template<typename ExpressionType, typename DeviceType> class TensorDevice;
 template<typename Derived, typename Device> struct TensorEvaluator;
 
 namespace internal {
-template<typename Derived, typename OtherDerived, typename Device, bool Vectorizable> struct TensorAssign;
+template<typename Expression, typename Device, bool Vectorizable> class TensorExecutor;
 }  // end namespace internal
 
 }  // end namespace Eigen