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.. llvm-extract - extract a function from an LLVM module llvm-extract [options] --func function-name [filename] 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). --alias alias-name NDENT 0.0 NDENT 3.5 Extract the alias named function-name from the LLVM bitcode. May be specified multiple times to extract multiple alias at once. NINDENT NINDENT --ralias alias-regular-expr NDENT 0.0 NDENT 3.5 Extract the alias matching alias-regular-expr from the LLVM bitcode. All alias matching the regular expression will be extracted. May be specified multiple times. NINDENT NINDENT --bb basic-block-specifier NDENT 0.0 NDENT 3.5 Extract basic blocks(s) specified in basic-block-specifier. May be specified multiple times. Each <function:bb[;bb]> specifier pair will create a function. If multiple basic blocks are specified in one pair, the first block in the sequence should dominate the rest. NINDENT NINDENT --delete NDENT 0.0 NDENT 3.5 Delete specified Globals from Module. NINDENT NINDENT -f NDENT 0.0 NDENT 3.5 Enable 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. NINDENT NINDENT --func function-name NDENT 0.0 NDENT 3.5 Extract the function named function-name from the LLVM bitcode. May be specified multiple times to extract multiple functions at once. NINDENT NINDENT --rfunc function-regular-expr NDENT 0.0 NDENT 3.5 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. NINDENT NINDENT --glob global-name NDENT 0.0 NDENT 3.5 Extract the global variable named global-name from the LLVM bitcode. May be specified multiple times to extract multiple global variables at once. NINDENT NINDENT --rglob glob-regular-expr NDENT 0.0 NDENT 3.5 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. NINDENT NINDENT --keep-const-init NDENT 0.0 NDENT 3.5 Preserve the values of constant globals. NINDENT NINDENT --recursive NDENT 0.0 NDENT 3.5 Recursively extract all called functions NINDENT NINDENT -help NDENT 0.0 NDENT 3.5 Print a summary of command line options. NINDENT NINDENT -o filename NDENT 0.0 NDENT 3.5 Specify the output filename. If filename is "-" (the default), then llvm-extract sends its output to standard output. NINDENT NINDENT -S NDENT 0.0 NDENT 3.5 Write output in LLVM intermediate language (instead of bitcode). NINDENT NINDENT If llvm-extract succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with a non-zero value. bugpoint(1) Maintained by the LLVM Team (https://llvm.org/). 2003-2021, LLVM Project Generated by docutils manpage writer.
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