<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>llvm-as - LLVM assembler — LLVM 8 documentation</title> <link rel="stylesheet" href="../_static/llvm-theme.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/language_data.js"></script> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="next" title="llvm-dis - LLVM disassembler" href="llvm-dis.html" /> <link rel="prev" title="LLVM Command Guide" href="index.html" /> <style type="text/css"> table.right { float: right; margin-left: 20px; } table.right td { border: 1px solid #ccc; } </style> </head><body> <div class="logo"> <a href="../index.html"> <img src="../_static/logo.png" alt="LLVM Logo" width="250" height="88"/></a> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="llvm-dis.html" title="llvm-dis - LLVM disassembler" accesskey="N">next</a> |</li> <li class="right" > <a href="index.html" title="LLVM Command Guide" accesskey="P">previous</a> |</li> <li><a href="http://llvm.org/">LLVM Home</a> | </li> <li><a href="../index.html">Documentation</a>»</li> <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">LLVM Command Guide</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="body" role="main"> <div class="section" id="llvm-as-llvm-assembler"> <h1>llvm-as - LLVM assembler<a class="headerlink" href="#llvm-as-llvm-assembler" title="Permalink to this headline">¶</a></h1> <div class="section" id="synopsis"> <h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2> <p><strong>llvm-as</strong> [<em>options</em>] [<em>filename</em>]</p> </div> <div class="section" id="description"> <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2> <p><strong>llvm-as</strong> is the LLVM assembler. It reads a file containing human-readable LLVM assembly language, translates it to LLVM bitcode, and writes the result into a file or to standard output.</p> <p>If <em>filename</em> is omitted or is <code class="docutils literal notranslate"><span class="pre">-</span></code>, then <strong>llvm-as</strong> reads its input from standard input.</p> <p>If an output file is not specified with the <strong>-o</strong> option, then <strong>llvm-as</strong> sends its output to a file or standard output by following these rules:</p> <ul class="simple"> <li>If the input is standard input, then the output is standard output.</li> <li>If the input is a file that ends with <code class="docutils literal notranslate"><span class="pre">.ll</span></code>, then the output file is of the same name, except that the suffix is changed to <code class="docutils literal notranslate"><span class="pre">.bc</span></code>.</li> <li>If the input is a file that does not end with the <code class="docutils literal notranslate"><span class="pre">.ll</span></code> suffix, then the output file has the same name as the input file, except that the <code class="docutils literal notranslate"><span class="pre">.bc</span></code> suffix is appended.</li> </ul> </div> <div class="section" id="options"> <h2>OPTIONS<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2> <dl class="docutils"> <dt><strong>-f</strong></dt> <dd>Enable binary output on terminals. Normally, <strong>llvm-as</strong> will refuse to write raw bitcode output if the output stream is a terminal. With this option, <strong>llvm-as</strong> will write raw bitcode regardless of the output device.</dd> <dt><strong>-help</strong></dt> <dd>Print a summary of command line options.</dd> <dt><strong>-o</strong> <em>filename</em></dt> <dd>Specify the output file name. If <em>filename</em> is <code class="docutils literal notranslate"><span class="pre">-</span></code>, then <strong>llvm-as</strong> sends its output to standard output.</dd> </dl> </div> <div class="section" id="exit-status"> <h2>EXIT STATUS<a class="headerlink" href="#exit-status" title="Permalink to this headline">¶</a></h2> <p>If <strong>llvm-as</strong> succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with a non-zero value.</p> </div> <div class="section" id="see-also"> <h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2> <p>llvm-dis|llvm-dis, gccas|gccas</p> </div> </div> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="llvm-dis.html" title="llvm-dis - LLVM disassembler" >next</a> |</li> <li class="right" > <a href="index.html" title="LLVM Command Guide" >previous</a> |</li> <li><a href="http://llvm.org/">LLVM Home</a> | </li> <li><a href="../index.html">Documentation</a>»</li> <li class="nav-item nav-item-1"><a href="index.html" >LLVM Command Guide</a> »</li> </ul> </div> <div class="footer" role="contentinfo"> © Copyright 2003-2020, LLVM Project. 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