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.TH "LLVM-NM" "1" "2017-12-23" "3.8" "LLVM"
.SH NAME
llvm-nm \- list LLVM bitcode and object file's symbol table
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.SH SYNOPSIS
.sp
\fBllvm\-nm\fP [\fIoptions\fP] [\fIfilenames…\fP]
.SH DESCRIPTION
.sp
The \fBllvm\-nm\fP utility lists the names of symbols from the LLVM bitcode
files, object files, or \fBar\fP 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 \fI\-\fP is used as a file name,
\fBllvm\-nm\fP will process a file on its standard input stream.
.sp
\fBllvm\-nm\fP’s default output format is the traditional BSD \fBnm\fP
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.
.sp
Type code characters currently supported, and their meanings, are as follows:
.sp
U
.INDENT 0.0
.INDENT 3.5
Named object is referenced but undefined in this bitcode file
.UNINDENT
.UNINDENT
.sp
C
.INDENT 0.0
.INDENT 3.5
Common (multiple definitions link together into one def)
.UNINDENT
.UNINDENT
.sp
W
.INDENT 0.0
.INDENT 3.5
Weak reference (multiple definitions link together into zero or one definitions)
.UNINDENT
.UNINDENT
.sp
t
.INDENT 0.0
.INDENT 3.5
Local function (text) object
.UNINDENT
.UNINDENT
.sp
T
.INDENT 0.0
.INDENT 3.5
Global function (text) object
.UNINDENT
.UNINDENT
.sp
d
.INDENT 0.0
.INDENT 3.5
Local data object
.UNINDENT
.UNINDENT
.sp
D
.INDENT 0.0
.INDENT 3.5
Global data object
.UNINDENT
.UNINDENT
.sp
?
.INDENT 0.0
.INDENT 3.5
Something unrecognizable
.UNINDENT
.UNINDENT
.sp
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”, \fBllvm\-nm\fP does not print an address for any
symbol in an LLVM bitcode file, even symbols which are defined in the bitcode
file.
.SH OPTIONS
.INDENT 0.0
.TP
.B \-B    (default)
Use BSD output format.  Alias for \fB\-\-format=bsd\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-P
Use POSIX.2 output format.  Alias for \fB\-\-format=posix\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-debug\-syms, \-a
Show all symbols, even debugger only.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-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.)
.UNINDENT
.INDENT 0.0
.TP
.B \-\-dynamic, \-D
Display dynamic symbols instead of normal symbols.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-extern\-only, \-g
Print only symbols whose definitions are external; that is, accessible
from other files.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-format=format, \-f format
Select an output format; \fIformat\fP may be \fIsysv\fP, \fIposix\fP, or \fIbsd\fP\&.  The default
is \fIbsd\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-help
Print a summary of command\-line options and their meanings.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-no\-sort, \-p
Shows symbols in order encountered.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-numeric\-sort, \-n, \-v
Sort symbols by address.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-print\-file\-name, \-A, \-o
Precede each symbol with the file it came from.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-print\-size, \-S
Show symbol size instead of address.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-size\-sort
Sort symbols by size.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-undefined\-only, \-u
Print only symbols referenced but not defined in this file.
.UNINDENT
.SH BUGS
.INDENT 0.0
.INDENT 3.5
.INDENT 0.0
.IP \(bu 2
\fBllvm\-nm\fP cannot demangle C++ mangled names, like GNU \fBnm\fP
can.
.IP \(bu 2
\fBllvm\-nm\fP does not support the full set of arguments that GNU
\fBnm\fP does.
.UNINDENT
.UNINDENT
.UNINDENT
.SH EXIT STATUS
.sp
\fBllvm\-nm\fP exits with an exit code of zero.
.SH SEE ALSO
.sp
llvm\-dis, ar(1), nm(1)
.SH AUTHOR
Maintained by The LLVM Team (http://llvm.org/).
.SH COPYRIGHT
2003-2017, LLVM Project
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