:program:`llvm-nm` [options] [filenames...]
The :program:`llvm-nm` utility lists the names of symbols from the LLVM bitcode files, object files, or :program:`ar` archives containing them, named on the command line. Each symbol is listed along with some simple information about its provenance. If no file name is specified, or - is used as a file name, :program:`llvm-nm` will process a file on its standard input stream.
:program:`llvm-nm`'s default output format is the traditional BSD :program:`nm` output format. Each such output record consists of an (optional) 8-digit hexadecimal address, followed by a type code character, followed by a name, for each symbol. One record is printed per line; fields are separated by spaces. When the address is omitted, it is replaced by 8 spaces.
Type code characters currently supported, and their meanings, are as follows:
U
Named object is referenced but undefined in this bitcode file
C
Common (multiple definitions link together into one def)
W
Weak reference (multiple definitions link together into zero or one definitions)
t
Local function (text) object
T
Global function (text) object
d
Local data object
D
Global data object
?
Something unrecognizable
Because LLVM bitcode files typically contain objects that are not considered to have addresses until they are linked into an executable image or dynamically compiled "just-in-time", :program:`llvm-nm` does not print an address for any symbol in an LLVM bitcode file, even symbols which are defined in the bitcode file.
.. program:: llvm-nm
.. option:: -B (default) Use BSD output format. Alias for :option:`--format=bsd`.
.. option:: -P Use POSIX.2 output format. Alias for :option:`--format=posix`.
.. option:: --debug-syms, -a Show all symbols, even debugger only.
.. option:: --defined-only Print only symbols defined in this file (as opposed to symbols which may be referenced by objects in this file, but not defined in this file.)
.. option:: --dynamic, -D Display dynamic symbols instead of normal symbols.
.. option:: --extern-only, -g Print only symbols whose definitions are external; that is, accessible from other files.
.. option:: --format=format, -f format Select an output format; *format* may be *sysv*, *posix*, or *bsd*. The default is *bsd*.
.. option:: -help Print a summary of command-line options and their meanings.
.. option:: --no-sort, -p Shows symbols in order encountered.
.. option:: --numeric-sort, -n, -v Sort symbols by address.
.. option:: --print-file-name, -A, -o Precede each symbol with the file it came from.
.. option:: --print-size, -S Show symbol size instead of address.
.. option:: --size-sort Sort symbols by size.
.. option:: --undefined-only, -u Print only symbols referenced but not defined in this file.
- :program:`llvm-nm` cannot demangle C++ mangled names, like GNU :program:`nm` can.
- :program:`llvm-nm` does not support the full set of arguments that GNU :program:`nm` does.
:program:`llvm-nm` exits with an exit code of zero.
llvm-dis, ar(1), nm(1)