llvm-extract-4.0 man page on Kali

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LLVM-EXTRACT(1)			     LLVM		       LLVM-EXTRACT(1)

NAME
       llvm-extract - extract a function from an LLVM module

SYNOPSIS
       llvm-extract [options] –func function-name [filename]

DESCRIPTION
       The  llvm-extract  command takes the name of a function and extracts it
       from the specified LLVM bitcode file.  It is primarily used as a debug‐
       ging tool to reduce test cases from larger programs that are triggering
       a bug.

       In addition to  extracting  the	bitcode	 of  the  specified  function,
       llvm-extract will also remove unreachable global variables, prototypes,
       and unused types.

       The llvm-extract command reads its input from standard input  if	 file‐
       name  is	 omitted or if filename is -.  The output is always written to
       standard output, unless the -o option is specified (see below).

OPTIONS
       -f
	  Enable binary output	on  terminals.	 Normally,  llvm-extract  will
	  refuse  to write raw bitcode output if the output stream is a termi‐
	  nal.	With this option, llvm-extract will write raw bitcode  regard‐
	  less of the output device.

       –func function-name
	  Extract the function named function-name from the LLVM bitcode.  May
	  be specified multiple times to extract multiple functions at once.

       –rfunc function-regular-expr
	  Extract the function(s) matching function-regular-expr from the LLVM
	  bitcode.   All  functions  matching  the  regular expression will be
	  extracted.  May be specified multiple times.

       –glob global-name
	  Extract the global variable named global-name from the LLVM bitcode.
	  May be specified multiple times to extract multiple global variables
	  at once.

       –rglob glob-regular-expr
	  Extract the global variable(s) matching global-regular-expr from the
	  LLVM	bitcode.  All global variables matching the regular expression
	  will be extracted.  May be specified multiple times.

       -help
	  Print a summary of command line options.

       -o filename
	  Specify the output filename.	If filename is “-” (the default), then
	  llvm-extract sends its output to standard output.

       -S
	  Write output in LLVM intermediate language (instead of bitcode).

EXIT STATUS
       If  llvm-extract succeeds, it will exit with 0.	Otherwise, if an error
       occurs, it will exit with a non-zero value.

SEE ALSO
       bugpoint

AUTHOR
       Maintained by The LLVM Team (http://llvm.org/).

COPYRIGHT
       2003-2017, LLVM Project

4				  2017-10-18		       LLVM-EXTRACT(1)
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