dataflow_matcher.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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#ifndef TVM_RELAY_DATAFLOW_MATCHER_H_
#define TVM_RELAY_DATAFLOW_MATCHER_H_
 
#include <tvm/relay/dataflow_pattern.h>
#include <tvm/relay/dataflow_pattern_functor.h>
 
#include <string>
#include <unordered_map>
#include <utility>
 
namespace tvm {
namespace relay {
 
class DFPatternCallback;
class DFPatternCallbackNode : public Object {
 public:
  DFPattern pattern;
  PackedFunc function;
  bool require_type;
  bool rewrite_once;
 
  void VisitAttrs(tvm::AttrVisitor* v) {
    v->Visit("pattern", &pattern);
    v->Visit("require_type", &require_type);
    v->Visit("rewrite_once", &rewrite_once);
  }
 
  static constexpr const char* _type_key = "DFPatternCallbackNode";
  TVM_DECLARE_BASE_OBJECT_INFO(DFPatternCallbackNode, Object);
};
 
class DFPatternCallback : public ObjectRef {
 public:
  TVM_DLL DFPatternCallback(DFPattern pattern, PackedFunc callback, bool require_type,
                            bool rewrite_once = false);
  TVM_DEFINE_OBJECT_REF_METHODS(DFPatternCallback, ObjectRef, DFPatternCallbackNode);
};
 
bool MatchPattern(DFPattern pattern, Expr expr);
 
Expr RewritePatterns(Array<DFPatternCallback> callbacks, Expr expr, IRModule mod = IRModule());
 
Expr PartitionPattern(DFPattern pattern, Expr expr, Map<String, ObjectRef> attrs, PackedFunc check);
 
Expr InferType(const Expr& expr);
 
}  // namespace relay
}  // namespace tvm
 
#endif  // TVM_RELAY_DATAFLOW_MATCHER_H_