doc/guide/localhost/SSA2Simplify

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  26 <h1>SSA2Simplify</h1>
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  29 <div id="preamble">
  30 <div class="sectionbody">
  31 <div class="paragraph"><p>The optimization passes for the <a href="SSA2">SSA2</a> <a href="IntermediateLanguage">IntermediateLanguage</a> are
  32 collected and controlled by the <span class="monospaced">Simplify2</span> functor
  33 (<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/simplify2.sig"><span class="monospaced">simplify2.sig</span></a>,
  34 <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/simplify2.fun"><span class="monospaced">simplify2.fun</span></a>).</p></div>
  35 <div class="paragraph"><p>The following optimization passes are implemented:</p></div>
  36 <div class="ulist"><ul>
  37 <li>
  38 <p>
  39 <a href="DeepFlatten">DeepFlatten</a>
  40 </p>
  41 </li>
  42 <li>
  43 <p>
  44 <a href="RefFlatten">RefFlatten</a>
  45 </p>
  46 </li>
  47 <li>
  48 <p>
  49 <a href="RemoveUnused">RemoveUnused</a>
  50 </p>
  51 </li>
  52 <li>
  53 <p>
  54 <a href="Zone">Zone</a>
  55 </p>
  56 </li>
  57 </ul></div>
  58 <div class="paragraph"><p>There are additional analysis and rewrite passes that augment many of the other optimization passes:</p></div>
  59 <div class="ulist"><ul>
  60 <li>
  61 <p>
  62 <a href="Restore">Restore</a>
  63 </p>
  64 </li>
  65 <li>
  66 <p>
  67 <a href="Shrink">Shrink</a>
  68 </p>
  69 </li>
  70 </ul></div>
  71 <div class="paragraph"><p>The optimization passes can be controlled from the command-line by the options</p></div>
  72 <div class="ulist"><ul>
  73 <li>
  74 <p>
  75 <span class="monospaced">-diag-pass &lt;pass&gt;</span>&#8201;&#8212;&#8201;keep diagnostic info for pass
  76 </p>
  77 </li>
  78 <li>
  79 <p>
  80 <span class="monospaced">-disable-pass &lt;pass&gt;</span>&#8201;&#8212;&#8201;skip optimization pass (if normally performed)
  81 </p>
  82 </li>
  83 <li>
  84 <p>
  85 <span class="monospaced">-enable-pass &lt;pass&gt;</span>&#8201;&#8212;&#8201;perform optimization pass (if normally skipped)
  86 </p>
  87 </li>
  88 <li>
  89 <p>
  90 <span class="monospaced">-keep-pass &lt;pass&gt;</span>&#8201;&#8212;&#8201;keep the results of pass
  91 </p>
  92 </li>
  93 <li>
  94 <p>
  95 <span class="monospaced">-loop-passes &lt;n&gt;</span>&#8201;&#8212;&#8201;loop optimization passes
  96 </p>
  97 </li>
  98 <li>
  99 <p>
 100 <span class="monospaced">-ssa2-passes &lt;passes&gt;</span>&#8201;&#8212;&#8201;ssa optimization passes
 101 </p>
 102 </li>
 103 </ul></div>
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