:::{program} llvm-size :::
{program}llvm-size [options] [input...]
{program}llvm-size is a tool that prints size information for binary files. It is intended to be a drop-in replacement for GNU's {program}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, {program}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.
:::{option} -A Equivalent to {option}--format with a value of sysv. :::
:::{option} --arch= Architecture(s) from Mach-O universal binaries to display information for. :::
:::{option} -B Equivalent to {option}--format with a value of berkeley. :::
:::{option} --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. :::
:::{option} --exclude-pagezero Do not include the __PAGEZERO segment when calculating size information for Mach-O files. The __PAGEZERO segment is a virtual memory region used for memory protection that does not contribute to actual size, and excluding can provide a better representation of actual size. :::
:::{option} -d Equivalent to {option}--radix with a value of 10. :::
:::{option} -l Display verbose address and offset information for segments and sections in Mach-O files in darwin format. :::
:::{option} --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, {program}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
:::
:::{option} --help, -h Display a summary of command line options. :::
:::{option} -m Equivalent to {option}--format with a value of darwin. :::
:::{option} -o Equivalent to {option}--radix with a value of 8. :::
:::{option} --radix= 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
:::
:::{option} --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)
:::
:::{option} --version Display the version of the {program}llvm-size executable. :::
:::{option} -x Equivalent to {option}--radix with a value of 16. :::
:::{option} @ Read command-line options from response file <FILE>. :::
{program}llvm-size exits with a non-zero exit code if there is an error. Otherwise, it exits with code 0.
To report bugs, please visit <https://github.com/llvm/llvm-project/labels/tools:llvm-size/>.