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docs: command guide: cleanups, no text changes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188627 91177308-0d34-0410-b5e6-96231b3b80d8
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Dmitri Gribenko
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llvm-extract - extract a function from an LLVM module
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=====================================================
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SYNOPSIS
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--------
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**llvm-extract** [*options*] **--func** *function-name* [*filename*]
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:program:`llvm-extract` [*options*] **--func** *function-name* [*filename*]
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DESCRIPTION
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-----------
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The **llvm-extract** command takes the name of a function and extracts it from
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the specified LLVM bitcode file. It is primarily used as a debugging tool to
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reduce test cases from larger programs that are triggering a bug.
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The :program:`llvm-extract` command takes the name of a function and extracts
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it from the specified LLVM bitcode file. It is primarily used as a debugging
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tool to reduce test cases from larger programs that are triggering a bug.
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In addition to extracting the bitcode of the specified function,
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**llvm-extract** will also remove unreachable global variables, prototypes, and
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unused types.
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The **llvm-extract** command reads its input from standard input if filename is
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omitted or if filename is -. The output is always written to standard output,
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unless the **-o** option is specified (see below).
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:program:`llvm-extract` will also remove unreachable global variables,
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prototypes, and unused types.
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The :program:`llvm-extract` command reads its input from standard input if
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filename is omitted or if filename is ``-``. The output is always written to
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standard output, unless the **-o** option is specified (see below).
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OPTIONS
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-------
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**-f**
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Enable binary output on terminals. Normally, **llvm-extract** will refuse to
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write raw bitcode output if the output stream is a terminal. With this option,
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**llvm-extract** will write raw bitcode regardless of the output device.
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Enable binary output on terminals. Normally, :program:`llvm-extract` will
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refuse to write raw bitcode output if the output stream is a terminal. With
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this option, :program:`llvm-extract` will write raw bitcode regardless of the
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output device.
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**--func** *function-name*
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Extract the function named *function-name* from the LLVM bitcode. May be
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Extract the function named *function-name* from the LLVM bitcode. May be
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specified multiple times to extract multiple functions at once.
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**--rfunc** *function-regular-expr*
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Extract the function(s) matching *function-regular-expr* from the LLVM bitcode.
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All functions matching the regular expression will be extracted. May be
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specified multiple times.
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**--glob** *global-name*
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Extract the global variable named *global-name* from the LLVM bitcode. May be
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Extract the global variable named *global-name* from the LLVM bitcode. May be
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specified multiple times to extract multiple global variables at once.
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**--rglob** *glob-regular-expr*
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Extract the global variable(s) matching *global-regular-expr* from the LLVM
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bitcode. All global variables matching the regular expression will be extracted.
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May be specified multiple times.
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bitcode. All global variables matching the regular expression will be
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extracted. May be specified multiple times.
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**-help**
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Print a summary of command line options.
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**-o** *filename*
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Specify the output filename. If filename is "-" (the default), then
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**llvm-extract** sends its output to standard output.
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:program:`llvm-extract` sends its output to standard output.
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**-S**
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Write output in LLVM intermediate language (instead of bitcode).
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EXIT STATUS
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-----------
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If **llvm-extract** succeeds, it will exit with 0. Otherwise, if an error
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If :program:`llvm-extract` succeeds, it will exit with 0. Otherwise, if an error
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occurs, it will exit with a non-zero value.
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SEE ALSO
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--------
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bugpoint
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bugpoint|bugpoint
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@ -1,189 +1,146 @@
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llvm-nm - list LLVM bitcode and object file's symbol table
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==========================================================
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SYNOPSIS
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--------
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:program:`llvm-nm` [*options*] [*filenames...*]
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DESCRIPTION
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-----------
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The :program:`llvm-nm` utility lists the names of symbols from the LLVM bitcode
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files, object files, or :program:`ar` archives containing them, named on the
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command line. Each symbol is listed along with some simple information about its
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provenance. If no file name is specified, or *-* is used as a file name,
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command line. Each symbol is listed along with some simple information about
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its provenance. If no file name is specified, or *-* is used as a file name,
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:program:`llvm-nm` will process a file on its standard input stream.
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:program:`llvm-nm`'s default output format is the traditional BSD :program:`nm`
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output format. Each such output record consists of an (optional) 8-digit
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output format. Each such output record consists of an (optional) 8-digit
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hexadecimal address, followed by a type code character, followed by a name, for
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each symbol. One record is printed per line; fields are separated by spaces.
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each symbol. One record is printed per line; fields are separated by spaces.
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When the address is omitted, it is replaced by 8 spaces.
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Type code characters currently supported, and their meanings, are as follows:
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U
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Named object is referenced but undefined in this bitcode file
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C
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Common (multiple definitions link together into one def)
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W
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Weak reference (multiple definitions link together into zero or one definitions)
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t
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Local function (text) object
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T
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Global function (text) object
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d
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Local data object
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D
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Global data object
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?
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Something unrecognizable
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Because LLVM bitcode files typically contain objects that are not considered to
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have addresses until they are linked into an executable image or dynamically
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compiled "just-in-time", :program:`llvm-nm` does not print an address for any
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symbol in an LLVM bitcode file, even symbols which are defined in the bitcode
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file.
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OPTIONS
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-------
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.. program:: llvm-nm
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.. option:: -B (default)
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Use BSD output format. Alias for :option:`--format=bsd`.
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Use BSD output format. Alias for :option:`--format=bsd`.
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.. option:: -P
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Use POSIX.2 output format. Alias for :option:`--format=posix`.
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Use POSIX.2 output format. Alias for :option:`--format=posix`.
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.. option:: --debug-syms, -a
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Show all symbols, even debugger only.
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.. option:: --defined-only
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Print only symbols defined in this file (as opposed to
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symbols which may be referenced by objects in this file, but not
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defined in this file.)
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.. option:: --dynamic, -D
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Display dynamic symbols instead of normal symbols.
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.. option:: --extern-only, -g
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Print only symbols whose definitions are external; that is, accessible
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from other files.
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.. option:: --format=format, -f format
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Select an output format; *format* may be *sysv*, *posix*, or *bsd*. The default
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Select an output format; *format* may be *sysv*, *posix*, or *bsd*. The default
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is *bsd*.
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.. option:: -help
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Print a summary of command-line options and their meanings.
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.. option:: --no-sort, -p
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Shows symbols in order encountered.
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.. option:: --numeric-sort, -n, -v
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Sort symbols by address.
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.. option:: --print-file-name, -A, -o
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Precede each symbol with the file it came from.
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.. option:: --print-size, -S
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Show symbol size instead of address.
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.. option:: --size-sort
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Sort symbols by size.
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.. option:: --undefined-only, -u
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Print only symbols referenced but not defined in this file.
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BUGS
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----
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* :program:`llvm-nm` cannot demangle C++ mangled names, like GNU :program:`nm`
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can.
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* :program:`llvm-nm` does not support the full set of arguments that GNU
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:program:`nm` does.
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EXIT STATUS
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-----------
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:program:`llvm-nm` exits with an exit code of zero.
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SEE ALSO
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--------
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llvm-dis|llvm-dis, ar(1), nm(1)
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llvm-dis, ar(1), nm(1)
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