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<div class="title">Optimizer.cpp</div> </div>
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<a href="_optimizer_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright © 2017 Arm Ltd. All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// SPDX-License-Identifier: MIT</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "<a class="code" href="_optimizer_8hpp.html">Optimizer.hpp</a>"</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="_observable_8hpp.html">Observable.hpp</a>"</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "<a class="code" href="_all_8hpp.html">optimizations/All.hpp</a>"</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">namespace </span><a class="code" href="namespacearmnn.html">armnn</a></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> {</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> Optimizer::Optimizer()</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> }</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
<div class="line"><a name="l00016"></a><span class="lineno"><a class="line" href="classarmnn_1_1_optimizer.html#a1f48ba622b76ea04d15c9b62f642bf08"> 16</a></span> <span class="keywordtype">void</span> <a class="code" href="classarmnn_1_1_optimizer.html#a1f48ba622b76ea04d15c9b62f642bf08">Optimizer::Pass</a>(<a class="code" href="classarmnn_1_1_graph.html">Graph</a>& graph, <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_optimizer.html#ad1794808004025d6e06c176507197b24">Optimizations</a>& optimizations)</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <a class="code" href="_profiling_8hpp.html#a5ccc65e2c464ac05ce311fdae7ede03a">ARMNN_SCOPED_PROFILING_EVENT</a>(<a class="code" href="namespacearmnn.html#ae2f04a162585c0a5222a537efd5456aeaec0fc0100c4fc1ce4eea230c3dc10360">Compute::Undefined</a>, <span class="stringliteral">"Optimizer_Pass"</span>);</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="comment">// Create observables to observe changes to the graph</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <a class="code" href="classarmnn_1_1_added_layer_observable.html">AddedLayerObservable</a> addedLayerObservable(graph);</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <a class="code" href="classarmnn_1_1_erased_layer_names_observable.html">ErasedLayerNamesObservable</a> erasedLayerNamesObservable(graph);</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordtype">bool</span> graphNeedsSorting = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">auto</span> it = graph.<a class="code" href="classarmnn_1_1_graph.html#af497e16cf92179b5e55543741351b8bf">TopologicalSort</a>().<a class="code" href="classarmnn_1_1_graph.html#ab45dae688fc5d8983727abffa4389003">end</a>();</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="comment">// Calls TopologicalSort() for every iteration to re-order the list in case layers were added/removed.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordflow">while</span> (it != graph.<a class="code" href="classarmnn_1_1_graph.html#af497e16cf92179b5e55543741351b8bf">TopologicalSort</a>().<a class="code" href="classarmnn_1_1_graph.html#a2387033802383edbdc95f9bbb12a707e">begin</a>())</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  --it;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>&& optimization : optimizations)</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="_assert_8hpp.html#a5698be69cbd5dfe6c28fcd9867e8cbed">ARMNN_ASSERT</a>(*it);</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  optimization->Run(graph, **it);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">if</span> ((*it)->IsOutputUnconnected())</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">auto</span> next = std::next(graph.<a class="code" href="classarmnn_1_1_graph.html#ac7ed5efddd83499ff642cc65f3f66a14">GetPosInGraph</a>(**it));</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  graph.<a class="code" href="classarmnn_1_1_graph.html#a96d76fd10af39fbfabfd0caf0d1439fa">EraseLayer</a>(it);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  it = next;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  graphNeedsSorting = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Add the names of erased layers as related layers to the new added layers</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& erasedLayerName : erasedLayerNamesObservable)</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& addedLayer : addedLayerObservable)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  addedLayer->AddRelatedLayerName(erasedLayerName);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  erasedLayerNamesObservable.Clear();</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  addedLayerObservable.<a class="code" href="classarmnn_1_1_graph_observable.html#aa71d36872f416feaa853788a7a7a7ef8">Clear</a>();</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (graphNeedsSorting)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  graphNeedsSorting = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> } <span class="comment">// namespace armnn</span></div>
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