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LLVM-EXTRACT(1) | LLVM | LLVM-EXTRACT(1) |
NAME¶
llvm-extract - extract a function from an LLVM moduleSYNOPSIS¶
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 debugging 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 filename is omitted or if filename is -. The output is always written to standard output, unless the -o option is specified (see below).
OPTIONS¶
-fEnable binary output on terminals. Normally,
llvm-extract will refuse to write raw bitcode output if the output
stream is a terminal. With this option, llvm-extract will write raw
bitcode regardless 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¶
bugpointAUTHOR¶
Maintained by The LLVM Team (http://llvm.org/).COPYRIGHT¶
2003-2018, LLVM Project2018-02-02 | 5 |