LLVM-SIZE(1) LLVM LLVM-SIZE(1)
NAME
llvm-size - print size information
SYNOPSIS
llvm-size [options] [input...]
DESCRIPTION
llvm-size is a tool that prints size information for binary files. It is
intended to be a drop-in replacement for GNU's size.
The tool prints size information for each input specified. If no input is
specified, the program prints size information for a.out. If "-" is
specified as an input file, llvm-size reads a file from the standard
input stream. If an input is an archive, size information will be
displayed for all its members.
OPTIONS
-A Equivalent to --format with a value of sysv.
--arch=<arch>
Architecture(s) from Mach-O universal binaries to display
information for.
-B Equivalent to --format with a value of berkeley.
--common
Include ELF common symbol sizes in bss size for berkeley output
format, or as a separate section entry for sysv output. If not
specified, these symbols are ignored.
-d Equivalent to --radix with a value of 10.
-l Display verbose address and offset information for segments and
sections in Mach-O files in darwin format.
--format=<format>
Set the output format to the <format> specified. Available
<format> options are berkeley (the default), sysv and darwin.
Berkeley output summarises text, data and bss sizes in each file,
as shown below for a typical pair of ELF files:
$ llvm-size --format=berkeley test.o test2.o
text data bss dec hex filename
182 16 5 203 cb test.elf
82 8 1 91 5b test2.o
For Mach-O files, the output format is slightly different:
$ llvm-size --format=berkeley macho.obj macho2.obj
__TEXT __DATA __OBJC others dec hex
4 8 0 0 12 c macho.obj
16 32 0 0 48 30 macho2.obj
Sysv output displays size and address information for most
sections, with each file being listed separately:
$ llvm-size --format=sysv test.elf test2.o
test.elf :
section size addr
.eh_frame 92 2097496
.text 90 2101248
.data 16 2105344
.bss 5 2105360
.comment 209 0
Total 412
test2.o :
section size addr
.text 26 0
.data 8 0
.bss 1 0
.comment 106 0
.note.GNU-stack 0 0
.eh_frame 56 0
.llvm_addrsig 2 0
Total 199
darwin format only affects Mach-O input files. If an input of a
different file format is specified, llvm-size falls back to
berkeley format. When producing darwin format, the tool displays
information about segments and sections:
$ llvm-size --format=darwin macho.obj macho2.obj
macho.obj:
Segment : 12
Section (__TEXT, __text): 4
Section (__DATA, __data): 8
total 12
total 12
macho2.obj:
Segment : 48
Section (__TEXT, __text): 16
Section (__DATA, __data): 32
total 48
total 48
--help, -h
Display a summary of command line options.
-m Equivalent to --format with a value of darwin.
-o Equivalent to --radix with a value of 8.
--radix=<value>
Display size information in the specified radix. Permitted values
are 8, 10 (the default) and 16 for octal, decimal and hexadecimal
output respectively.
Example:
$ llvm-size --radix=8 test.o
text data bss oct hex filename
0152 04 04 162 72 test.o
$ llvm-size --radix=10 test.o
text data bss dec hex filename
106 4 4 114 72 test.o
$ llvm-size --radix=16 test.o
text data bss dec hex filename
0x6a 0x4 0x4 114 72 test.o
--totals, -t
Applies only to berkeley output format. Display the totals for all
listed fields, in addition to the individual file listings.
Example:
$ llvm-size --totals test.elf test2.o
text data bss dec hex filename
182 16 5 203 cb test.elf
82 8 1 91 5b test2.o
264 24 6 294 126 (TOTALS)
--version
Display the version of the llvm-size executable.
-x Equivalent to --radix with a value of 16.
@<FILE>
Read command-line options from response file <FILE>.
EXIT STATUS
llvm-size exits with a non-zero exit code if there is an error.
Otherwise, it exits with code 0.
BUGS
To report bugs, please visit
<https://github.com/llvm/llvm-project/labels/tools:llvm-size/>.
AUTHOR
Maintained by the LLVM Team (https://llvm.org/).
COPYRIGHT
2003-2023, LLVM Project
16 2023-05-24 LLVM-SIZE(1)