From e289f44c565aa6d12d21a498ef34a515891cf520 Mon Sep 17 00:00:00 2001
From: Rasmus Munk Larsen <rmlarsen@google.com>
Date: Tue, 11 Sep 2018 14:09:00 -0700
Subject: Don't vectorize the MeanReducer unless pdiv is available.

---
 unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
index 9fd276075..51572f9e7 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
@@ -158,7 +158,8 @@ template <typename T, typename Device>
 struct reducer_traits<MeanReducer<T>, Device> {
   enum {
     Cost = NumTraits<T>::AddCost,
-    PacketAccess = PacketType<T, Device>::HasAdd && !NumTraits<T>::IsInteger,
+    PacketAccess = PacketType<T, Device>::HasAdd &&
+                   PacketType<T, Device>::HasDiv && !NumTraits<T>::IsInteger,
     IsStateful = true,
     IsExactlyAssociative = NumTraits<T>::IsInteger
   };
-- 
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