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<a href="./Home">MLton 20180207</a>
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<h1>RemoveUnused</h1>
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<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p><a href="RemoveUnused">RemoveUnused</a> is an optimization pass for both the <a href="SSA">SSA</a> and
<a href="SSA2">SSA2</a> <a href="IntermediateLanguage">IntermediateLanguage</a>s, invoked from <a href="SSASimplify">SSASimplify</a> and
<a href="SSA2Simplify">SSA2Simplify</a>.</p></div>
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<div class="sect1">
<h2 id="_description">Description</h2>
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<div class="paragraph"><p>This pass aggressively removes unused:</p></div>
<div class="ulist"><ul>
<li>
<p>
datatypes
</p>
</li>
<li>
<p>
datatype constructors
</p>
</li>
<li>
<p>
datatype constructor arguments
</p>
</li>
<li>
<p>
functions
</p>
</li>
<li>
<p>
function arguments
</p>
</li>
<li>
<p>
function returns
</p>
</li>
<li>
<p>
blocks
</p>
</li>
<li>
<p>
block arguments
</p>
</li>
<li>
<p>
statements (variable bindings)
</p>
</li>
<li>
<p>
handlers from non-tail calls (mayRaise analysis)
</p>
</li>
<li>
<p>
continuations from non-tail calls (mayReturn analysis)
</p>
</li>
</ul></div>
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<div class="sect1">
<h2 id="_implementation">Implementation</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/remove-unused.fun"><span class="monospaced">remove-unused.fun</span></a>
</p>
</li>
<li>
<p>
<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/remove-unused2.fun"><span class="monospaced">remove-unused2.fun</span></a>
</p>
</li>
</ul></div>
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<div class="sect1">
<h2 id="_details_and_notes">Details and Notes</h2>
<div class="sectionbody">
<div class="paragraph"><p></p></div>
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