chore: import upstream snapshot with attribution

paddle/phi/kernels/impl/increment_kernel_impl.h

@@ -0,0 +1,40 @@
+/* Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#pragma once
+
+#include "paddle/phi/kernels/funcs/eigen/common.h"
+#include "paddle/phi/kernels/funcs/eigen/eigen_function.h"
+#include "paddle/phi/kernels/increment_kernel.h"
+
+namespace phi {
+
+template <typename T, typename Context>
+void IncrementKernel(const Context& dev_ctx,
+                     const DenseTensor& x,
+                     float value,
+                     DenseTensor* out) {
+  dev_ctx.template Alloc<T>(out);
+  if (x.numel() == 0) {
+    return;
+  }
+  auto& dev = *dev_ctx.eigen_device();
+  funcs::EigenAdd<std::decay_t<decltype(dev)>, T>::Eval(
+      dev,
+      EigenScalar<T>::From(*out),
+      EigenScalar<T>::From(x),
+      static_cast<T>(value));
+}
+
+}  // namespace phi