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