text: /*
   * 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.
   */
  
  /*!
   * \file tvm/relay/qnn/transform.h
   *
   * This file implements a pass manager for QNN ops using Relay Pass manager.
   */
  #ifndef TVM_RELAY_QNN_TRANSFORM_H_
  #define TVM_RELAY_QNN_TRANSFORM_H_
  
  #include <tvm/relay/transform.h>
  #include <tvm/runtime/c_runtime_api.h>
  
  namespace tvm {
  namespace relay {
  
  using relay::transform::Pass;
  
  namespace qnn {
  namespace transform {
  
  /*!
   * \brief Legalizes a QNN expr. Contains specifically two types of Legalizations. First,
   * converts/Lowers an expression containing QNN ops to an expression containing only core Relay ops.
   * Each QNN op is lowered to a sequence of exisiting Relay ops. This is a target-independent pass.
   * One can register the lowering/transformation function for this op using FTVMQnnCanonicalize
   * attr_name for FTVMLegalize op attribute. Second, as opposed to Relay Legalize, this one legalizes
   * only QNN ops. One can register a transformation/legalization function for an op by using the
   * FTVMQnnLegalize attr_name for FTVMLegalize op attribute. The isolation of QNN and Relay Legalize
   * gives us separation of concerns, leading to a better software practice. The legalization can be
   * configured to happen per target.
   *
   * \return The pass.
   */
  TVM_DLL Pass Legalize();
  
  }  // namespace transform
  
  }  // namespace qnn
  }  // namespace relay
  }  // namespace tvm
  
  #endif  // TVM_RELAY_QNN_TRANSFORM_H_
  