1 files changed, 5 insertions, 3 deletions
diff --git a/tensorflow/core/kernels/xent_op.cc b/tensorflow/core/kernels/xent_op.cc
index 639bad5f04..2a0ef63eab 100644
--- a/tensorflow/core/kernels/xent_op.cc
+++ b/tensorflow/core/kernels/xent_op.cc
@@ -61,9 +61,11 @@ class SoftmaxXentWithLogitsOp : public OpKernel {
                    context->allocate_output(
                        0, TensorShape({logits_in.dim_size(0)}), &loss_out));
     Tensor* back_out = nullptr;
-    OP_REQUIRES_OK(context,
-                   context->allocate_output(1, logits_in.shape(), &back_out));
-
+    // Try to reuse the logits_in buffer for the backprop output.
+    if (!context->forward_input_to_output(0, 1, &back_out)) {
+      OP_REQUIRES_OK(context,
+                     context->allocate_output(1, logits_in.shape(), &back_out));
+    }
     functor::XentFunctor<Device, T> functor;
     functor(context->eigen_device<Device>(), logits_in.matrix<T>(),
             labels_in.matrix<T>(), scratch.matrix<T>(), loss_out->vec<T>(),