1 /*
2 * Copyright (c) Meta Platforms, Inc. and affiliates.
3 * All rights reserved.
4 *
5 * This source code is licensed under the BSD-style license found in the
6 * LICENSE file in the root directory of this source tree.
7 */
8
9 #include <cstdint>
10 #include <cstring>
11
12 #include <executorch/kernels/portable/cpu/util/copy_ops_util.h>
13 #include <executorch/runtime/kernel/kernel_includes.h>
14
15 namespace torch {
16 namespace executor {
17 namespace native {
18
19 using Tensor = exec_aten::Tensor;
20
21 // view_copy.out(Tensor self, int[] size, *, Tensor(a!) out) -> Tensor(a!)
view_copy_out(KernelRuntimeContext & ctx,const Tensor & self,exec_aten::ArrayRef<int64_t> size_int64_t,Tensor & out)22 Tensor& view_copy_out(
23 KernelRuntimeContext& ctx,
24 const Tensor& self,
25 exec_aten::ArrayRef<int64_t> size_int64_t,
26 Tensor& out) {
27 (void)ctx;
28
29 Tensor::SizesType expected_output_size[16];
30 ET_KERNEL_CHECK(
31 ctx,
32 get_view_copy_target_size(
33 self, size_int64_t, out.dim(), expected_output_size),
34 InvalidArgument,
35 out);
36
37 // Resize for dynamic shape
38 ET_KERNEL_CHECK_MSG(
39 ctx,
40 resize_tensor(
41 out, {expected_output_size, static_cast<size_t>(out.dim())}) ==
42 Error::Ok,
43 InvalidArgument,
44 out,
45 "Failed to resize output tensor.");
46
47 ET_KERNEL_CHECK(
48 ctx, tensors_have_same_dim_order(self, out), InvalidArgument, out);
49
50 ET_KERNEL_CHECK(ctx, tensor_is_default_dim_order(self), InvalidArgument, out);
51
52 ET_KERNEL_CHECK(
53 ctx, check_view_copy_args(self, size_int64_t, out), InvalidArgument, out);
54
55 if (self.nbytes() > 0) {
56 memcpy(out.mutable_data_ptr(), self.const_data_ptr(), self.nbytes());
57 }
58 return out;
59 }
60
61 } // namespace native
62 } // namespace executor
63 } // namespace torch
64