chore: import upstream snapshot with attribution

paddle/phi/kernels/impl/inverse_kernel_impl.h

@@ -0,0 +1,38 @@
+// 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/inverse_kernel.h"
+
+#include "paddle/phi/backends/cpu/cpu_context.h"
+#include "paddle/phi/backends/gpu/gpu_context.h"
+#include "paddle/phi/core/dense_tensor.h"
+#include "paddle/phi/kernels/funcs/matrix_inverse.h"
+
+namespace phi {
+
+template <typename T, typename Context>
+void InverseKernel(const Context& dev_ctx,
+                   const DenseTensor& x,
+                   DenseTensor* out) {
+  dev_ctx.template Alloc<T>(out);
+  if (x.numel() == 0) {
+    return;
+  }
+  funcs::MatrixInverseFunctor<Context, T> mat_inv;
+  mat_inv(dev_ctx, x, out);
+}
+
+}  // namespace phi