doc/guide/localhost/ToSSA2

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  26 <h1>ToSSA2</h1>
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  29 <div id="preamble">
  30 <div class="sectionbody">
  31 <div class="paragraph"><p><a href="ToSSA2">ToSSA2</a> is a translation pass from the <a href="SSA">SSA</a>
  32 <a href="IntermediateLanguage">IntermediateLanguage</a> to the <a href="SSA2">SSA2</a> <a href="IntermediateLanguage">IntermediateLanguage</a>.</p></div>
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  35 <div class="sect1">
  36 <h2 id="_description">Description</h2>
  37 <div class="sectionbody">
  38 <div class="paragraph"><p>This pass is a simple conversion from a <a href="SSA">SSA</a> program into a
  39 <a href="SSA2">SSA2</a> program.</p></div>
  40 <div class="paragraph"><p>The only interesting portions of the translation are:</p></div>
  41 <div class="ulist"><ul>
  42 <li>
  43 <p>
  44 an <a href="SSA">SSA</a> <span class="monospaced">ref</span> type becomes an object with a single mutable field
  45 </p>
  46 </li>
  47 <li>
  48 <p>
  49 <span class="monospaced">array</span>, <span class="monospaced">vector</span>, and <span class="monospaced">ref</span> are eliminated in favor of select and updates
  50 </p>
  51 </li>
  52 <li>
  53 <p>
  54 <span class="monospaced">Case</span> transfers separate discrimination and constructor argument selects
  55 </p>
  56 </li>
  57 </ul></div>
  58 </div>
  59 </div>
  60 <div class="sect1">
  61 <h2 id="_implementation">Implementation</h2>
  62 <div class="sectionbody">
  63 <div class="ulist"><ul>
  64 <li>
  65 <p>
  66 <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/ssa-to-ssa2.sig"><span class="monospaced">ssa-to-ssa2.sig</span></a>
  67 </p>
  68 </li>
  69 <li>
  70 <p>
  71 <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/ssa-to-ssa2.fun"><span class="monospaced">ssa-to-ssa2.fun</span></a>
  72 </p>
  73 </li>
  74 </ul></div>
  75 </div>
  76 </div>
  77 <div class="sect1">
  78 <h2 id="_details_and_notes">Details and Notes</h2>
  79 <div class="sectionbody">
  80 <div class="paragraph"><p></p></div>
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