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<li class="toctree-l1"><a class="reference internal" href="Lib.Errors.html">Base library - Errors</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">SSA form - Dominance frontier</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#Lib.Dominators.computeDom"><code class="docutils literal notranslate"><span class="pre">computeDom()</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="#Lib.Dominators.printDT"><code class="docutils literal notranslate"><span class="pre">printDT()</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="#Lib.Dominators.computeDT"><code class="docutils literal notranslate"><span class="pre">computeDT()</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="#Lib.Dominators.computeDF"><code class="docutils literal notranslate"><span class="pre">computeDF()</span></code></a></li>
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<section id="module-Lib.Dominators">
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<span id="lib-dominators-module"></span><h1>Lib.Dominators module<a class="headerlink" href="#module-Lib.Dominators" title="Permalink to this heading"></a></h1>
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<p>Utility functions to work with dominators in a <a class="reference internal" href="Lib.CFG.html#Lib.CFG.CFG" title="Lib.CFG.CFG"><code class="xref py py-class docutils literal notranslate"><span class="pre">CFG</span></code></a>.</p>
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<p>Do not hesitate to look at the source of the functions
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to get a better understanding of the algorithms.</p>
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<dl class="py function">
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<dt class="sig sig-object py" id="Lib.Dominators.computeDom">
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<span class="sig-prename descclassname"><span class="pre">Lib.Dominators.</span></span><span class="sig-name descname"><span class="pre">computeDom</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">cfg</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.CFG.html#Lib.CFG.CFG" title="Lib.CFG.CFG"><span class="pre">CFG</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/Dominators.html#computeDom"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.Dominators.computeDom" title="Permalink to this definition"></a></dt>
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<dd><p><cite>computeDom(cfg)</cite> computes the table associating blocks to their
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dominators in <cite>cfg</cite>.
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It works by solving the equation system.</p>
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<p>This is an helper function called during SSA entry.</p>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="Lib.Dominators.printDT">
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<span class="sig-prename descclassname"><span class="pre">Lib.Dominators.</span></span><span class="sig-name descname"><span class="pre">printDT</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">filename</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">graph</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="reference internal" href="../_modules/Lib/Dominators.html#printDT"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.Dominators.printDT" title="Permalink to this definition"></a></dt>
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<dd><p>Display a graphical rendering of the given domination tree.</p>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="Lib.Dominators.computeDT">
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<span class="sig-prename descclassname"><span class="pre">Lib.Dominators.</span></span><span class="sig-name descname"><span class="pre">computeDT</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">cfg</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.CFG.html#Lib.CFG.CFG" title="Lib.CFG.CFG"><span class="pre">CFG</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">dominators</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">dom_graphs</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">basename</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/Dominators.html#computeDT"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.Dominators.computeDT" title="Permalink to this definition"></a></dt>
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<dd><p><cite>computeDT(cfg, dominators)</cite> computes the domination tree of <cite>cfg</cite>
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using the previously computed <cite>dominators</cite>.
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It returns <cite>DT</cite>, a dictionary which associates a block with its children
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in the dominator tree.</p>
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<p>This is an helper function called during SSA entry.</p>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="Lib.Dominators.computeDF">
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<span class="sig-prename descclassname"><span class="pre">Lib.Dominators.</span></span><span class="sig-name descname"><span class="pre">computeDF</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">cfg</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.CFG.html#Lib.CFG.CFG" title="Lib.CFG.CFG"><span class="pre">CFG</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">dominators</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">DT</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">dom_graphs</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">basename</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">Set</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><span class="pre">Block</span></a><span class="p"><span class="pre">]</span></span><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/Dominators.html#computeDF"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.Dominators.computeDF" title="Permalink to this definition"></a></dt>
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<dd><p><cite>computeDF(…)</cite> computes the dominance frontier of a CFG.
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It returns <cite>DF</cite> which associates a block to its frontier.</p>
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<p>This is an helper function called during SSA entry.</p>
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</dd></dl>
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