=pod =head1 NAME llvm-extract - extract a function from an LLVM module =head1 SYNOPSIS B<llvm-extract> [I<options>] B<--func> I<function-name> [I<filename>] =head1 DESCRIPTION The B<llvm-extract> command takes the name of a function and extracts it from the specified LLVM bitcode file. It is primarily used as a debugging tool to reduce test cases from larger programs that are triggering a bug. In addition to extracting the bitcode of the specified function, B<llvm-extract> will also remove unreachable global variables, prototypes, and unused types. The B<llvm-extract> command reads its input from standard input if filename is omitted or if filename is -. The output is always written to standard output, unless the B<-o> option is specified (see below). =head1 OPTIONS =over =item B<-f> Force overwrite. Normally, B<llvm-extract> will refuse to overwrite an output file that already exists. With this option, B<llvm-extract> will overwrite the output file and replace it with new bitcode. =item B<--func> I<function-name> Extract the function named I<function-name> from the LLVM bitcode. =item B<--help> Print a summary of command line options. =item B<-o> I<filename> Specify the output filename. If filename is "-" (the default), then B<llvm-extract> sends its output to standard output. =back =head1 EXIT STATUS If B<llvm-extract> succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with a non-zero value. =head1 SEE ALSO L<bugpoint|bugpoint> =head1 AUTHORS Maintained by the LLVM Team (L<http://llvm.org>). =cut