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 <executorch/kernels/portable/cpu/util/reduce_util.h>
10 #include <executorch/runtime/kernel/kernel_includes.h>
11 #include <executorch/runtime/platform/assert.h>
12
13 namespace torch {
14 namespace executor {
15 namespace native {
16
17 using Tensor = exec_aten::Tensor;
18 using ScalarType = exec_aten::ScalarType;
19
sum_dim_out(KernelRuntimeContext & ctx,const Tensor & in,optional<ArrayRef<int64_t>> dim_list,bool keepdim,optional<ScalarType> dtype,Tensor & out)20 Tensor& sum_dim_out(
21 KernelRuntimeContext& ctx,
22 const Tensor& in,
23 optional<ArrayRef<int64_t>> dim_list,
24 bool keepdim,
25 optional<ScalarType> dtype,
26 Tensor& out) {
27 (void)ctx;
28
29 ET_KERNEL_CHECK(
30 ctx,
31 check_reduction_args(in, dim_list, keepdim, dtype, out),
32 InvalidArgument,
33 out);
34
35 ET_KERNEL_CHECK(
36 ctx,
37 resize_reduction_out(in, dim_list, keepdim, out) == Error::Ok,
38 InvalidArgument,
39 out);
40
41 ET_KERNEL_CHECK(
42 ctx, tensors_have_same_dim_order(in, out), InvalidArgument, out);
43
44 ET_KERNEL_CHECK(ctx, tensor_is_default_dim_order(in), InvalidArgument, out);
45
46 ET_SWITCH_REAL_TYPES_AND(
47 Bool, in.scalar_type(), ctx, "sum.IntList_out", CTYPE_IN, [&] {
48 ET_SWITCH_REAL_TYPES_AND(
49 Bool, out.scalar_type(), ctx, "sum.IntList_out", CTYPE_OUT, [&] {
50 CTYPE_OUT* out_data = out.mutable_data_ptr<CTYPE_OUT>();
51 for (size_t out_ix = 0; out_ix < out.numel(); ++out_ix) {
52 CTYPE_OUT sum = 0;
53 if (in.numel() > 0) {
54 sum = map_reduce_over_dim_list<CTYPE_IN, CTYPE_OUT>(
55 [](CTYPE_IN v) { return static_cast<CTYPE_OUT>(v); },
56 [](CTYPE_OUT outv, CTYPE_OUT acc) { return acc + outv; },
57 in,
58 dim_list,
59 out_ix);
60 }
61 out_data[out_ix] = sum;
62 }
63 });
64 });
65
66 return out;
67 }
68
69 } // namespace native
70 } // namespace executor
71 } // namespace torch
72