chore: import upstream snapshot with attribution

2026-07-13 12:40:42 +08:00
commit e25996e7db
15472 changed files with 3536181 additions and 0 deletions
@@ -0,0 +1,74 @@
+// Copyright (c) 2023 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/as_strided_kernel.h"
+#include "paddle/common/flags.h"
+#include "paddle/phi/backends/all_context.h"
+#include "paddle/phi/core/kernel_registry.h"
+
+COMMON_DECLARE_bool(use_stride_kernel);
+
+namespace phi {
+void ValidateZeroSizeTensorShape(const std::vector<int64_t>& dims,
+                                 const std::vector<int64_t>& strides,
+                                 const DenseTensor& input) {
+  if (input.numel() != 0) {
+    return;
+  }
+  PADDLE_ENFORCE_EQ(dims.size(),
+                    strides.size(),
+                    common::errors::InvalidArgument(
+                        "The size of dims and strides should be equal."));
+  for (size_t i = 0; i < dims.size(); i++) {
+    if (dims[i] == 0) {
+      return;
+    }
+  }
+
+  PADDLE_THROW(common::errors::InvalidArgument(
+      "When input is zero-size tensor, the shape attribute must also be "
+      "zero-size."));
+}
+
+template <typename Context>
+void AsStridedKernel(const Context& dev_ctx,
+                     const DenseTensor& input,
+                     const std::vector<int64_t>& dims,
+                     const std::vector<int64_t>& stride,
+                     int64_t offset,
+                     DenseTensor* out) {
+  if (!FLAGS_use_stride_kernel) {
+    PADDLE_THROW(common::errors::Fatal(
+        "FLAGS_use_stride_kernel is closed. Strided kernel "
+        "be called, something wrong has happened!"));
+  }
+  auto meta = out->meta();
+  meta.dims = DDim(dims.data(), static_cast<int>(dims.size()));
+  meta.strides = DDim(stride.data(), static_cast<int>(stride.size()));
+  meta.offset = offset;
+  ValidateZeroSizeTensorShape(dims, stride, input);
+  PADDLE_ENFORCE_GE(
+      offset,
+      0,
+      common::errors::InvalidArgument(
+          "The offset must be non-negative, but got %d.", offset));
+  out->set_meta(meta);
+  out->ResetHolder(input.Holder());
+  out->ShareInplaceVersionCounterWith(input);
+}
+
+}  // namespace phi
+
+PD_REGISTER_KERNEL_FOR_ALL_BACKEND_DTYPE(as_strided,
+                                         STRIDED,
+                                         phi::AsStridedKernel) {}