man llvm-extract (Commandes) - extract a function from an LLVM module
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 bytecode 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 bytecode 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
- -f
- Force overwrite. Normally, llvm-extract will refuse to overwrite an output file that already exists. With this option, llvm-extract will overwrite the output file and replace it with new bytecode.
- --func function-name
- Extract the function named function-name from the LLVM bytecode.
- --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.
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
AUTHORS
Maintained by the LLVM Team (<http://llvm.cs.uiuc.edu>).