chore: import upstream snapshot with attribution

paddle/phi/kernels/strings/strings_empty_kernel.cc

@@ -0,0 +1,59 @@
+// 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.
+
+#include "paddle/phi/kernels/strings/strings_empty_kernel.h"
+
+#include "paddle/phi/backends/all_context.h"
+#include "paddle/phi/core/kernel_registry.h"
+
+namespace phi::strings {
+
+template <typename Context>
+void EmptyKernel(const Context& dev_ctx,
+                 const IntArray& shape,
+                 StringTensor* out) {
+  out->Resize(shape.GetData());
+  dev_ctx.template Alloc<dtype::pstring>(out);
+}
+
+template <typename Context>
+void EmptyLikeKernel(const Context& dev_ctx, StringTensor* out) {
+  dev_ctx.template Alloc<dtype::pstring>(out);
+}
+
+}  // namespace phi::strings
+
+PD_REGISTER_KERNEL_FOR_ALL_DTYPE(strings_empty,
+                                 CPU,
+                                 ALL_LAYOUT,
+                                 phi::strings::EmptyKernel<phi::CPUContext>) {}
+
+PD_REGISTER_KERNEL_FOR_ALL_DTYPE(
+    strings_empty_like,
+    CPU,
+    ALL_LAYOUT,
+    phi::strings::EmptyLikeKernel<phi::CPUContext>) {}
+
+#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
+PD_REGISTER_KERNEL_FOR_ALL_DTYPE(strings_empty,
+                                 GPU,
+                                 ALL_LAYOUT,
+                                 phi::strings::EmptyKernel<phi::GPUContext>) {}
+
+PD_REGISTER_KERNEL_FOR_ALL_DTYPE(
+    strings_empty_like,
+    GPU,
+    ALL_LAYOUT,
+    phi::strings::EmptyLikeKernel<phi::GPUContext>) {}
+#endif