dataflow_matcher.h

Go to the documentation of this file.

/*
 * 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
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#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_