<!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>Flatten</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>Flatten</h1> </div> <div id="content"> <div id="preamble"> <div class="sectionbody"> <div class="paragraph"><p><a href="Flatten">Flatten</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> </div> </div> <div class="sect1"> <h2 id="_description">Description</h2> <div class="sectionbody"> <div class="paragraph"><p>This pass flattens arguments to <a href="SSA">SSA</a> constructors, blocks, and functions.</p></div> <div class="paragraph"><p>If a tuple is explicitly available at all uses of a function (resp. block), then:</p></div> <div class="ulist"><ul> <li> <p> The formals and call sites are changed so that the components of the tuple are passed. </p> </li> <li> <p> The tuple is reconstructed at the beginning of the body of the function (resp. block). </p> </li> </ul></div> <div class="paragraph"><p>Similarly, if a tuple is explicitly available at all uses of a constructor, then:</p></div> <div class="ulist"><ul> <li> <p> The constructor argument datatype is changed to flatten the tuple type. </p> </li> <li> <p> The tuple is passed flat at each <span class="monospaced">ConApp</span>. </p> </li> <li> <p> The tuple is reconstructed at each <span class="monospaced">Case</span> transfer target. </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/flatten.fun"><span class="monospaced">flatten.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>
distrib
>
Fedora
>
18
>
x86_64
>
media
>
updates
>
by-pkgid
>
171636fb720078ab07822dd4a76f1938
>
files
>
2322
