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¶
- --arch=<arch>¶
- Architecture(s) from Mach-O universal binaries to display information for. 
- --common¶
- Include ELF common symbol sizes in bss size for - berkeleyoutput format, or as a separate section entry for- sysvoutput. If not specified, these symbols are ignored.
- -l¶
- Display verbose address and offset information for segments and sections in Mach-O files in - darwinformat.
- --format=<format>¶
- Set the output format to the - <format>specified. Available- <format>options are- berkeley(the default),- sysvand- 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 - darwinformat only affects Mach-O input files. If an input of a different file format is specified, llvm-size falls back to- berkeleyformat. When producing- darwinformat, 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. 
- --radix=<value>¶
- Display size information in the specified radix. Permitted values are - 8,- 10(the default) and- 16for 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 - berkeleyoutput 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. 
- @<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/>.
