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<a href="./Home">MLton 20201002</a>
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<h1>SplitTypes</h1>
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<div class="paragraph"><p><a href="SplitTypes">SplitTypes</a> is an optimization pass for the <a href="SSA">SSA</a> <a href="IntermediateLanguage">IntermediateLanguage</a>,
invoked from <a href="SSASimplify">SSASimplify</a>.</p></div>
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<h2 id="_description">Description</h2>
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<div class="paragraph"><p><a href="SplitTypes">SplitTypes</a> performs a unification-based analysis to split a datatype into
distinct instances for constructed values that are not unified.  Because
datatypes are recursive, other analyses often conflate all defs and uses of
<span class="monospaced">ConApp</span>-s; <span class="monospaced">SplitTypes</span> allows non-unified instances of a datatype to be
analyzed separately.</p></div>
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<h2 id="_implementation">Implementation</h2>
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<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/split-types.fun"><span class="monospaced">split-types.fun</span></a>
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<h2 id="_details_and_notes">Details and Notes</h2>
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