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<li class="toctree-l1 current"><a class="current reference internal" href="#">SSA form - Phi Nodes</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#Lib.PhiNode.PhiNode"><code class="docutils literal notranslate"><span class="pre">PhiNode</span></code></a><ul>
<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.var"><code class="docutils literal notranslate"><span class="pre">PhiNode.var</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.srcs"><code class="docutils literal notranslate"><span class="pre">PhiNode.srcs</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.defined"><code class="docutils literal notranslate"><span class="pre">PhiNode.defined()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.get_srcs"><code class="docutils literal notranslate"><span class="pre">PhiNode.get_srcs()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.used"><code class="docutils literal notranslate"><span class="pre">PhiNode.used()</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="#Lib.PhiNode.PhiNode.rename_from"><code class="docutils literal notranslate"><span class="pre">PhiNode.rename_from()</span></code></a></li>
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<section id="module-Lib.PhiNode">
<span id="lib-phinode-module"></span><h1>Lib.PhiNode module<a class="headerlink" href="#module-Lib.PhiNode" title="Permalink to this heading"></a></h1>
<p>Classes for φ nodes in a RiscV CFG <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> under SSA Form:
<a class="reference internal" href="#Lib.PhiNode.PhiNode" title="Lib.PhiNode.PhiNode"><code class="xref py py-class docutils literal notranslate"><span class="pre">PhiNode</span></code></a> for a statement of the form temp_x = φ(temp_0, …, temp_n).
These particular kinds of statements are expected to be in the field
b._phis for a <a class="reference internal" href="Lib.CFG.html#Lib.CFG.Block" title="Lib.CFG.Block"><code class="xref py py-class docutils literal notranslate"><span class="pre">Block</span></code></a> b.</p>
<dl class="py class">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">Lib.PhiNode.</span></span><span class="sig-name descname"><span class="pre">PhiNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">var</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.Operands.html#Lib.Operands.DataLocation" title="Lib.Operands.DataLocation"><span class="pre">DataLocation</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">srcs</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.Statement.html#Lib.Statement.Label" title="Lib.Statement.Label"><span class="pre">Label</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Operand" title="Lib.Operands.Operand"><span class="pre">Operand</span></a><span class="p"><span class="pre">]</span></span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="Lib.Statement.html#Lib.Statement.Statement" title="Lib.Statement.Statement"><code class="xref py py-class docutils literal notranslate"><span class="pre">Statement</span></code></a></p>
<p>A φ node is a renaming in the CFG, of the form temp_x = φ(temp_0, …, temp_n).
The field var contains the variable temp_x.
mise à jour lab5b
2024-11-03 18:04:44 +01:00
The field srcs links each corresponding predecessor in the CFG
—identified by its label—, to the variable temp_i of the φ
node.</p>
mise à jour pour tp5a
2024-10-20 19:14:34 +02:00
<dl class="py attribute">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.var">
<span class="sig-name descname"><span class="pre">var</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.DataLocation" title="Lib.Operands.DataLocation"><span class="pre">DataLocation</span></a></em><a class="headerlink" href="#Lib.PhiNode.PhiNode.var" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.srcs">
<span class="sig-name descname"><span class="pre">srcs</span></span><em class="property"><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.Statement.html#Lib.Statement.Label" title="Lib.Statement.Label"><span class="pre">Label</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Operand" title="Lib.Operands.Operand"><span class="pre">Operand</span></a><span class="p"><span class="pre">]</span></span></em><a class="headerlink" href="#Lib.PhiNode.PhiNode.srcs" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.defined">
<span class="sig-name descname"><span class="pre">defined</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">List</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Operand" title="Lib.Operands.Operand"><span class="pre">Operand</span></a><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.defined"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.defined" title="Permalink to this definition"></a></dt>
<dd><p>Return the variable defined by the φ node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.get_srcs">
<span class="sig-name descname"><span class="pre">get_srcs</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</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.Statement.html#Lib.Statement.Label" title="Lib.Statement.Label"><span class="pre">Label</span></a><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Operand" title="Lib.Operands.Operand"><span class="pre">Operand</span></a><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.get_srcs"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.get_srcs" title="Permalink to this definition"></a></dt>
<dd><p>Return the dictionnary associating for each previous block the corresponding variable.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.used">
<span class="sig-name descname"><span class="pre">used</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">List</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Operand" title="Lib.Operands.Operand"><span class="pre">Operand</span></a><span class="p"><span class="pre">]</span></span></span></span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.used"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.used" title="Permalink to this definition"></a></dt>
<dd><p>Return the variables used by the statement.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.rename">
<span class="sig-name descname"><span class="pre">rename</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">renamer</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Renamer" title="Lib.Operands.Renamer"><span class="pre">Renamer</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.rename"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.rename" title="Permalink to this definition"></a></dt>
<dd><p>Rename the variable defined by the φ node with a fresh name.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.rename_from">
<span class="sig-name descname"><span class="pre">rename_from</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">renamer</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.Operands.html#Lib.Operands.Renamer" title="Lib.Operands.Renamer"><span class="pre">Renamer</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">label</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="Lib.Statement.html#Lib.Statement.Label" title="Lib.Statement.Label"><span class="pre">Label</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.rename_from"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.rename_from" title="Permalink to this definition"></a></dt>
<dd><p>Rename the variable associated to the block identified by <cite>label</cite>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="Lib.PhiNode.PhiNode.printIns">
<span class="sig-name descname"><span class="pre">printIns</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">stream</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/Lib/PhiNode.html#PhiNode.printIns"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#Lib.PhiNode.PhiNode.printIns" title="Permalink to this definition"></a></dt>
<dd><p>Print the statement on the given output.
Should never be called on the base class.</p>
</dd></dl>
</dd></dl>
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