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94 lines
1.8 KiB
HTML
94 lines
1.8 KiB
HTML
<html>
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<title>
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LLVM: extract tool
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</title>
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<body bgcolor=white>
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<center>
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<h1>LLVM: <tt>extract</tt> tool</h1>
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</center>
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<HR>
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<h3>NAME</h3>
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<tt>extract</tt>
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<h3>
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SYNOPSIS
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</h3>
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<tt>extract [options] [filename]</tt>
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<h3>
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DESCRIPTION
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</h3>
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The <tt>extract</tt> command takes the name of a function and extracts it from
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the specified LLVM bytecode file. It is primarily used as a debugging tool to
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reduce test cases from larger programs that are triggering a bug.
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<p>
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In addition to extracting the bytecode of the specified function,
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<tt>extract</tt> will also remove unreachable global variables, prototypes, and
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unused types.
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<p>
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The <tt>extract</tt> command reads its input from standard input if filename is
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omitted or if filename is -. The output is always written to standard output.
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<h3>OPTIONS</h3>
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<ul>
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<ul>
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<li> -f
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<br>
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Force overwrite. Normally, <tt>extract</tt> will refuse to overwrite an
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output file that already exists. With this option, <tt>extract</tt>
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will overwrite the output file and replace it with new bytecode.
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<p>
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<li>-func <function>
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<br>
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Extract the specified function from the LLVM bytecode.
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<p>
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<li> -help
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<br>
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Print a summary of command line options.
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<p>
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<li> -o <filename>
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<br>
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Specify the output filename. If filename is "-" (the default), then
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<tt>extract</tt> sends its output to standard output.
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<p>
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<li> -stats
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<br>
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Print statistics.
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<p>
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<li> -time-passes
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<br>
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Record the amount of time needed for each pass and print it to standard
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error.
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<p>
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</ul>
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<h3>
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EXIT STATUS
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</h3>
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If <tt>extract</tt> succeeds, it will exit with 0. Otherwise, if an error
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occurs, it will exit with a non-zero value.
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<h3>
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SEE ALSO
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</h3>
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<a href="bugpoint.html"><tt>bugpoint</tt></a>
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<HR>
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Maintained by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a>.
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</body>
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</html>
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