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75 lines
1.6 KiB
Plaintext
75 lines
1.6 KiB
Plaintext
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=pod
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=head1 NAME
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extract - extract a function from an LLVM module
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=head1 SYNOPSIS
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extract [options] --func function-name [filename]
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=head1 DESCRIPTION
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The B<extract> 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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In addition to extracting the bytecode of the specified function,
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B<extract> will also remove unreachable global variables, prototypes, and
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unused types.
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The B<extract> 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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unless the B<-o> option is specified (see below).
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=head1 OPTIONS
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=over
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=item B<-f>
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Force overwrite. Normally, B<extract> will refuse to overwrite an
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output file that already exists. With this option, B<extract>
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will overwrite the output file and replace it with new bytecode.
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=item B<--func> I<function-name>
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Extract the function named I<function-name> from the LLVM bytecode.
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=item B<--help>
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Print a summary of command line options.
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=item B<-o> I<filename>
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Specify the output filename. If filename is "-" (the default), then
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B<extract> sends its output to standard output.
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=item B<--stats>
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Print statistics.
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=item B<--time-passes>
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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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=back
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=head1 EXIT STATUS
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If B<extract> 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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=head1 SEE ALSO
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L<bugpoint>
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=head1 AUTHORS
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Maintained by the LLVM Team (L<http://llvm.cs.uiuc.edu>).
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=cut
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