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 | |
20 | /*! |
21 | * \file extract_operators.cc |
22 | * \brief Extract unique operators from an IRModule |
23 | */ |
24 | #include <tvm/node/structural_hash.h> |
25 | #include <tvm/relay/analysis.h> |
26 | #include <tvm/relay/expr.h> |
27 | #include <tvm/relay/expr_functor.h> |
28 | |
29 | namespace tvm { |
30 | namespace relay { |
31 | |
32 | class OperatorExtractorWrapper : private MixedModeVisitor { |
33 | public: |
34 | explicit OperatorExtractorWrapper(const IRModule& mod) : mod_(mod) {} |
35 | |
36 | Map<String, tvm::Integer> Extract() { |
37 | VisitExpr(this->mod_->Lookup("main")); |
38 | |
39 | return operator_freqs_; |
40 | } |
41 | |
42 | private: |
43 | using MixedModeVisitor::VisitExpr_; |
44 | |
45 | const IRModule mod_; |
46 | /*! \brief Map of operator to frequency. */ |
47 | Map<String, tvm::Integer> operator_freqs_; |
48 | |
49 | void VisitExpr_(const CallNode* n) final { |
50 | VisitExpr(n->op); |
51 | |
52 | auto op = n->op.as<OpNode>(); |
53 | if (op) { |
54 | auto it = operator_freqs_.find(op->name); |
55 | ICHECK(it != operator_freqs_.end()) |
56 | << "Call's OpNode must be visited and registered before access"; |
57 | operator_freqs_.Set(op->name, 1 + operator_freqs_.at(op->name).IntValue()); |
58 | } |
59 | |
60 | MixedModeVisitor::VisitExpr_(n); |
61 | } |
62 | |
63 | void VisitExpr_(const OpNode* n) final { |
64 | // NOTE: OpNode is visited only once for every operator kind |
65 | // regardless of how many times that op appears in the graph. |
66 | operator_freqs_.Set(n->name, 0U); |
67 | } |
68 | }; |
69 | |
70 | Map<String, tvm::Integer> ExtractOperatorsPacked(const IRModule& mod) { |
71 | return OperatorExtractorWrapper(mod).Extract(); |
72 | } |
73 | |
74 | TVM_REGISTER_GLOBAL("relay.analysis.ExtractOperators").set_body_typed(ExtractOperatorsPacked); |
75 | |
76 | } // namespace relay |
77 | } // namespace tvm |
78 |