doc/guide/localhost/RemoveUnused

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  26 <h1>RemoveUnused</h1>
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  28 <div id="content">
  29 <div id="preamble">
  30 <div class="sectionbody">
  31 <div class="paragraph"><p><a href="RemoveUnused">RemoveUnused</a> is an optimization pass for both the <a href="SSA">SSA</a> and
  32 <a href="SSA2">SSA2</a> <a href="IntermediateLanguage">IntermediateLanguage</a>s, invoked from <a href="SSASimplify">SSASimplify</a> and
  33 <a href="SSA2Simplify">SSA2Simplify</a>.</p></div>
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  35 </div>
  36 <div class="sect1">
  37 <h2 id="_description">Description</h2>
  38 <div class="sectionbody">
  39 <div class="paragraph"><p>This pass aggressively removes unused:</p></div>
  40 <div class="ulist"><ul>
  41 <li>
  42 <p>
  43 datatypes
  44 </p>
  45 </li>
  46 <li>
  47 <p>
  48 datatype constructors
  49 </p>
  50 </li>
  51 <li>
  52 <p>
  53 datatype constructor arguments
  54 </p>
  55 </li>
  56 <li>
  57 <p>
  58 functions
  59 </p>
  60 </li>
  61 <li>
  62 <p>
  63 function arguments
  64 </p>
  65 </li>
  66 <li>
  67 <p>
  68 function returns
  69 </p>
  70 </li>
  71 <li>
  72 <p>
  73 blocks
  74 </p>
  75 </li>
  76 <li>
  77 <p>
  78 block arguments
  79 </p>
  80 </li>
  81 <li>
  82 <p>
  83 statements (variable bindings)
  84 </p>
  85 </li>
  86 <li>
  87 <p>
  88 handlers from non-tail calls (mayRaise analysis)
  89 </p>
  90 </li>
  91 <li>
  92 <p>
  93 continuations from non-tail calls (mayReturn analysis)
  94 </p>
  95 </li>
  96 </ul></div>
  97 </div>
  98 </div>
  99 <div class="sect1">
 100 <h2 id="_implementation">Implementation</h2>
 101 <div class="sectionbody">
 102 <div class="ulist"><ul>
 103 <li>
 104 <p>
 105 <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/remove-unused.fun"><span class="monospaced">remove-unused.fun</span></a>
 106 </p>
 107 </li>
 108 <li>
 109 <p>
 110 <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/remove-unused2.fun"><span class="monospaced">remove-unused2.fun</span></a>
 111 </p>
 112 </li>
 113 </ul></div>
 114 </div>
 115 </div>
 116 <div class="sect1">
 117 <h2 id="_details_and_notes">Details and Notes</h2>
 118 <div class="sectionbody">
 119 <div class="paragraph"><p></p></div>
 120 </div>
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