1LLVM-EXTRACT(1)               LLVM Command Guide               LLVM-EXTRACT(1)
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NAME

6       llvm-extract - extract a function from an LLVM module
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SYNOPSIS

9       llvm-extract [options] --func function-name [filename]
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DESCRIPTION

12       The llvm-extract command takes the name of a function and extracts it
13       from the specified LLVM bitcode file.  It is primarily used as a
14       debugging tool to reduce test cases from larger programs that are
15       triggering a bug.
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17       In addition to extracting the bitcode of the specified function, llvm-
18       extract will also remove unreachable global variables, prototypes, and
19       unused types.
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21       The llvm-extract command reads its input from standard input if
22       filename is omitted or if filename is -.  The output is always written
23       to standard output, unless the -o option is specified (see below).
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OPTIONS

26       -f  Enable binary output on terminals.  Normally, llvm-extract will
27           refuse to write raw bitcode output if the output stream is a
28           terminal. With this option, llvm-extract will write raw bitcode
29           regardless of the output device.
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31       --func function-name
32           Extract the function named function-name from the LLVM bitcode. May
33           be specified multiple times to extract multiple functions at once.
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35       --glob global-name
36           Extract the global variable named global-name from the LLVM
37           bitcode. May be specified multiple times to extract multiple global
38           variables at once.
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40       -help
41           Print a summary of command line options.
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43       -o filename
44           Specify the output filename.  If filename is "-" (the default),
45           then llvm-extract sends its output to standard output.
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47       -S  Write output in LLVM intermediate language (instead of bitcode).
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EXIT STATUS

50       If llvm-extract succeeds, it will exit with 0.  Otherwise, if an error
51       occurs, it will exit with a non-zero value.
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SEE ALSO

54       bugpoint
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AUTHORS

57       Maintained by the LLVM Team (<http://llvm.org>).
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61CVS                               2010-05-07                   LLVM-EXTRACT(1)