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 src/relay/transforms/fake_quantization_to_integer.h
22 * \brief Extract subgraph of a fake quantized region.
23 */
24#ifndef TVM_RELAY_TRANSFORMS_FAKE_QUANTIZATION_TO_INTEGER_H_
25#define TVM_RELAY_TRANSFORMS_FAKE_QUANTIZATION_TO_INTEGER_H_
26
27#include <tvm/ir/affine_type.h>
28#include <tvm/relay/expr_functor.h>
29
30#include <unordered_set>
31
32namespace tvm {
33namespace relay {
34
35class SubgraphExtractor : public ExprVisitor {
36 public:
37 const std::unordered_set<Expr, ObjectPtrHash, ObjectPtrEqual> GetSubgraph(const Expr& expr);
38 const Map<Expr, AffineType> GetAffineTypes();
39 void VisitExpr(const Expr& expr) override;
40
41 protected:
42 void VisitExpr_(const CallNode* call_node) override;
43
44 private:
45 const Op quantize_op_ = Op::Get("qnn.quantize");
46 const Op dequantize_op_ = Op::Get("qnn.dequantize");
47 bool is_fake_quantized_ = true;
48 Map<Expr, AffineType> affine_types_;
49};
50
51} // namespace relay
52} // namespace tvm
53
54#endif // TVM_RELAY_TRANSFORMS_FAKE_QUANTIZATION_TO_INTEGER_H_
55