message: BEGIN_PUBLIC
  It's desirable to run int64 compute on GPU. Rolling back the folowing CL.
  *** Original change description ***
  Register a new Sum op for T:int64 and Tidx:int32
  END_PUBLIC
  Automated rollback of commit
diff: @@ -76,15 +76,7 @@ REGISTER_KERNEL_BUILDER(
  .HostMemory("output")
  .HostMemory("reduction_indices"),
  ReductionOp<CPUDevice, int32, int64, Eigen::internal::SumReducer<int32>>);
  -REGISTER_KERNEL_BUILDER(
  - Name("Sum")
  - .Device(DEVICE_GPU)
  - .TypeConstraint<int64>("T")
  - .TypeConstraint<int32>("Tidx")
  - .HostMemory("input")
  - .HostMemory("output")
  - .HostMemory("reduction_indices"),
  - ReductionOp<CPUDevice, int64, int32, Eigen::internal::SumReducer<int64>>);
  +
  #endif
  #ifdef TENSORFLOW_USE_SYCL
  