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<html>
<title>
LLVM: llvm-as tool
</title>
<body bgcolor=white>
<center><h1>LLVM: <tt>llvm-as</tt> tool</h1></center>
<HR>
<h3>NAME</h3>
<tt>llvm-as</tt>
<h3>SYNOPSIS</h3>
<tt>llvm-as [options] [filename]</tt>
<h3>DESCRIPTION</h3>
The <tt>llvm-as</tt> command is the LLVM assembler. It reads a file containing
human readable LLVM assembly language, translates it to LLVM bytecode, and
writes the result into a file or to standard output.
<p>
If filename is omitted or is -, then <tt>llvm-as</tt> reads its input from
standard input.
<p>
If an output file is not specified with the <tt>-o</tt> option, then
<tt>llvm-as</tt> sends its output to a file or standard output by the following
logic:
<ul>
<li>
If the input is standard input, then the output is standard output.
<p>
<li>
If the input is a file that ends with .ll, then the output file is of
the same name, except that the suffix is changed to .bc.
<p>
<li>
If the input is a file that does not end with the .ll suffix, then the
output file has the same name as the input file, except that the .bc
suffix is appended.
<p>
</ul>
<h3>OPTIONS</h3>
<ul>
<li> -f
<br>
Force overwrite. Normally, <tt>llvm-as</tt> will refuse to overwrite an
output file that already exists. With this option, <tt>llvm-as</tt>
will overwrite the output file and replace it with new bytecode.
<p>
<li> -help
<br>
Print a summary of command line options.
<p>
<li> -o <filename>
<br>
Specify the output filename. If filename is -, then <tt>llvm-as</tt>
sends its output to standard output.
<p>
<li> -stats
<br>
Print statistics.
<p>
<li> -time-passes
<br>
Record the amount of time needed for each pass and print it to standard
error.
<p>
</ul>
<h3>EXIT STATUS</h3>
If <tt>llvm-as</tt> succeeds, it will exit with 0. Otherwise, if an error
occurs, it will exit with a non-zero value.
<h3>SEE ALSO</h3>
<a href="llvm-dis.html"><tt>llvm-dis</tt></a>
<a href="gccas.html"><tt>gccas</tt></a>
<HR>
Maintained by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a>.
</body>
</html>
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