<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="generator" content="AsciiDoc 8.6.8"> <title>ToSSA2</title> <link rel="stylesheet" href="./asciidoc.css" type="text/css"> <link rel="stylesheet" href="./pygments.css" type="text/css"> <script type="text/javascript" src="./asciidoc.js"></script> <script type="text/javascript"> /*<![CDATA[*/ asciidoc.install(); /*]]>*/ </script> <link rel="stylesheet" href="./mlton.css" type="text/css"/> </head> <body class="article"> <div id="banner"> <div id="banner-home"> <a href="./Home">MLton 20130715</a> </div> </div> <div id="header"> <h1>ToSSA2</h1> </div> <div id="content"> <div id="preamble"> <div class="sectionbody"> <div class="paragraph"><p><a href="ToSSA2">ToSSA2</a> is a translation pass from the <a href="SSA">SSA</a> <a href="IntermediateLanguage">IntermediateLanguage</a> to the <a href="SSA2">SSA2</a> <a href="IntermediateLanguage">IntermediateLanguage</a>.</p></div> </div> </div> <div class="sect1"> <h2 id="_description">Description</h2> <div class="sectionbody"> <div class="paragraph"><p>This pass is a simple conversion from a <a href="SSA">SSA</a> program into a <a href="SSA2">SSA2</a> program.</p></div> <div class="paragraph"><p>The only interesting portions of the translation are:</p></div> <div class="ulist"><ul> <li> <p> an <a href="SSA">SSA</a> <span class="monospaced">ref</span> type becomes an object with a single mutable field </p> </li> <li> <p> <span class="monospaced">array</span>, <span class="monospaced">vector</span>, and <span class="monospaced">ref</span> are eliminated in favor of select and updates </p> </li> <li> <p> <span class="monospaced">Case</span> transfers separate discrimination and constructor argument selects </p> </li> </ul></div> </div> </div> <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/ssa-to-ssa2.sig"><span class="monospaced">ssa-to-ssa2.sig</span></a> </p> </li> <li> <p> <a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/ssa-to-ssa2.fun"><span class="monospaced">ssa-to-ssa2.fun</span></a> </p> </li> </ul></div> </div> </div> <div class="sect1"> <h2 id="_details_and_notes">Details and Notes</h2> <div class="sectionbody"> <div class="paragraph"><p></p></div> </div> </div> </div> <div id="footnotes"><hr></div> <div id="footer"> <div id="footer-text"> </div> <div id="footer-badges"> </div> </div> </body> </html>
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