1 | /* |
2 | * Licensed to the Apache Software Foundation (ASF) under one |
3 | * or more contributor license agreements. See the NOTICE file |
4 | * distributed with this work for additional information |
5 | * regarding copyright ownership. The ASF licenses this file |
6 | * to you under the Apache License, Version 2.0 (the |
7 | * "License"); you may not use this file except in compliance |
8 | * with the License. You may obtain a copy of the License at |
9 | * |
10 | * http://www.apache.org/licenses/LICENSE-2.0 |
11 | * |
12 | * Unless required by applicable law or agreed to in writing, |
13 | * software distributed under the License is distributed on an |
14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
15 | * KIND, either express or implied. See the License for the |
16 | * specific language governing permissions and limitations |
17 | * under the License. |
18 | */ |
19 | #include <tvm/meta_schedule/schedule/generic/winograd.h> |
20 | |
21 | namespace tvm { |
22 | namespace meta_schedule { |
23 | |
24 | using namespace tvm::tir; |
25 | |
26 | /*! |
27 | * \brief Get the producer block of a given block. |
28 | * If there is a constant winograd transform matrix, inline it. |
29 | * \return The only producer block. |
30 | */ |
31 | BlockRV GetWinogradProducerAndInlineConst(Schedule sch, BlockRV block) { |
32 | Array<BlockRV> producers = sch->GetProducers(block); |
33 | Array<BlockRV> results; |
34 | for (const BlockRV& producer : producers) { |
35 | if (sch->Get(producer)->reads.empty()) { |
36 | sch->ComputeInline(producer); |
37 | } else { |
38 | results.push_back(producer); |
39 | } |
40 | } |
41 | ICHECK_EQ(results.size(), 1); |
42 | return results[0]; |
43 | } |
44 | |
45 | } // namespace meta_schedule |
46 | } // namespace tvm |
47 | |