ngraph/test/runtime/pass/like_replacement.cpp

   1 //*****************************************************************************
   2 // Copyright 2017-2020 Intel Corporation
   3 //
   4 // Licensed under the Apache License, Version 2.0 (the "License");
   5 // you may not use this file except in compliance with the License.
   6 // You may obtain a copy of the License at
   7 //
   8 //     http://www.apache.org/licenses/LICENSE-2.0
   9 //
  10 // Unless required by applicable law or agreed to in writing, software
  11 // distributed under the License is distributed on an "AS IS" BASIS,
  12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 // See the License for the specific language governing permissions and
  14 // limitations under the License.
  15 //*****************************************************************************
  16
  17 #include <functional>
  18 #include <memory>
  19 #include <typeindex>
  20 #include <typeinfo>
  21 #include <unordered_map>
  22
  23 #include "like_replacement.hpp"
  24 #include "ngraph/op/broadcast.hpp"
  25 #include "ngraph/op/constant.hpp"
  26 #include "ngraph/op/convert.hpp"
  27 #include "ngraph/op/pad.hpp"
  28 #include "ngraph/op/slice.hpp"
  29 #include "ngraph/op/stop_gradient.hpp"
  30 #include "ngraph/op/sum.hpp"
  31 #include "ngraph/util.hpp"
  32
  33 NGRAPH_SUPPRESS_DEPRECATED_START
  34
  35 using namespace std;
  36 using namespace ngraph;
  37
  38 static bool replace_broadcast_like(const std::shared_ptr<ngraph::Node>& node)
  39 {
  40     // Replace a broadcast like with the broadcast to eliminate the pseudo-dependency on the "like"
  41     // argument
  42     auto broadcast_like = as_type_ptr<op::BroadcastLike>(node);
  43     replace_node(node,
  44                  make_shared<op::Broadcast>(broadcast_like->input_value(0),
  45                                             broadcast_like->get_broadcast_shape(),
  46                                             broadcast_like->get_broadcast_axes()));
  47     return true;
  48 }
  49
  50 static const map<NodeTypeInfo, function<bool(const shared_ptr<Node>&)>> dispatcher{
  51     {op::BroadcastLike::type_info, replace_broadcast_like}};
  52
  53 bool pass::LikeReplacement::run_on_function(shared_ptr<Function> function_ptr)
  54 {
  55     static const map<NodeTypeInfo, function<bool(const shared_ptr<Node>&)>> dispatcher{
  56         {op::BroadcastLike::type_info, replace_broadcast_like}};
  57
  58     bool clobbered = false;
  59     for (const auto& n : function_ptr->get_ops())
  60     {
  61         // Work around a warning [-Wpotentially-evaluated-expression]
  62         auto handler = dispatcher.find(n->get_type_info());
  63         if (handler != dispatcher.end())
  64         {
  65             clobbered = handler->second(n) || clobbered;
  66         }
  67     }
  68
  69     return clobbered;
  70 }