| =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> |
| |
| Enable binary output on terminals. Normally, B<llvm-extract> will refuse to |
| write raw bitcode output if the output stream is a terminal. With this option, |
| B<llvm-extract> will write raw bitcode regardless of the output device. |
| |
| =item B<--func> I<function-name> |
| |
| Extract the function named I<function-name> from the LLVM bitcode. May be |
| specified multiple times to extract multiple functions at once. |
| |
| =item B<--rfunc> I<function-regular-expr> |
| |
| Extract the function(s) matching I<function-regular-expr> from the LLVM bitcode. |
| All functions matching the regular expression will be extracted. May be |
| specified multiple times. |
| |
| =item B<--glob> I<global-name> |
| |
| Extract the global variable named I<global-name> from the LLVM bitcode. May be |
| specified multiple times to extract multiple global variables at once. |
| |
| =item B<--rglob> I<glob-regular-expr> |
| |
| Extract the global variable(s) matching I<global-regular-expr> from the LLVM |
| bitcode. All global variables matching the regular expression will be extracted. |
| May be specified multiple times. |
| |
| =item B<-help> |
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| 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. |
| |
| =item B<-S> |
| |
| Write output in LLVM intermediate language (instead of bitcode). |
| |
| =back |
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| =head1 EXIT STATUS |
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| 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 |
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| Maintained by the LLVM Team (L<http://llvm.org/>). |
| |
| =cut |
