alm.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
 * "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 MXNET_COMMON_ALM_H_
#define MXNET_COMMON_ALM_H_
 
#include <mxnet/base.h>
#include <nnvm/graph.h>
#include <nnvm/node.h>
#include <functional>
#include <string>
#include <unordered_map>
#include <vector>
 
namespace mxnet {
namespace alm {
 
struct ALMParams {
  bool optimize = false;
 
  static ALMParams& get() {
    static ALMParams alm;
    return alm;
  }
};
 
nnvm::Graph OptimizeLayout(nnvm::Graph&& g);
 
using Transpose = std::vector<size_t>;
 
bool IsIdentity(const Transpose& t);
Transpose Reverse(const Transpose& axes);
 
Transpose Compose(const Transpose& lhs, const Transpose& rhs);
 
mshadow::LayoutFlag ApplyTranspose(mshadow::LayoutFlag layout, const Transpose& axes);
std::string ApplyTranspose(const std::string& layout, const Transpose& axes);
 
Transpose FromTShape(const mxnet::TShape& s);
 
using FChangeLayout = std::function<bool(nnvm::NodeAttrs*,
                                         mshadow::LayoutFlag target_layout,
                                         std::vector<Transpose>* in_axes,
                                         std::vector<Transpose>* out_axes)>;
 
Transpose FactorCommonTranspose(std::vector<Transpose>* axes);
 
}  // namespace alm
}  // namespace mxnet
 
#endif  // MXNET_COMMON_ALM_H_