From 4df8b5a75e76a2f99e623da2a59cb9d6f591b914 Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Wed, 25 Mar 2015 14:36:07 -0700
Subject: [PATCH] Avoid making an unecessary copy of the tensor expression when
 evaluating it on a GPU device

---
 unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
index b6ea655f3..17f10c07b 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDevice.h
@@ -144,7 +144,7 @@ template <typename ExpressionType> class TensorDevice<ExpressionType, GpuDevice>
 
   protected:
     const GpuDevice& m_device;
-    ExpressionType m_expression;
+    ExpressionType& m_expression;
 };
 #endif