opt(1)
SECCIÓN: 1 - Comandos de usuario
OPT(1) LLVM OPT(1)
NAME
opt - LLVM optimizer
SYNOPSIS
opt [options] [filename]
DESCRIPTION
The opt command is the modular LLVM optimizer and analyzer. It takes
LLVM source files as input, runs the specified optimizations or analyses
on it, and then outputs the optimized file. The optimizations available
via opt depend upon what libraries were linked into it as well as any
additional libraries that have been loaded with the -load option. Use
the -help option to determine what optimizations you can use.
If filename is omitted from the command line or is "-", opt reads its
input from standard input. Inputs can be in either the LLVM assembly
language format (.ll) or the LLVM bitcode format (.bc).
If an output filename is not specified with the -o option, opt writes
its output to the standard output.
OPTIONS
Enable binary output on terminals. Normally, opt will refuse to
write raw bitcode output if the output stream is a terminal.
With this option, opt will write raw bitcode regardless of the
output device.
Print a summary of command line options.
Specify the output filename.
Write output in LLVM intermediate language (instead of bitcode).
-{passname}
opt provides the ability to run any of LLVM's optimization or
analysis passes in any order. The -help option lists all the
passes available. The order in which the options occur on the
command line are the order in which they are executed (within
pass constraints).
This option causes opt to strip debug information from the module
before applying other optimizations. It is essentially the same
as -strip but it ensures that stripping of debug information is
done first.
This option causes opt to add a verify pass after every pass oth‐
erwise specified on the command line (including -verify). This
is useful for cases where it is suspected that a pass is creating
an invalid module but it is not clear which pass is doing it.
Record the amount of time needed for each pass and print it to
standard error.
If this is a debug build, this option will enable debug printouts
from passes which use the LLVM_DEBUG() macro. See the LLVM Pro‐
grammer's Manual, section #DEBUG for more information.
Load the dynamic object plugin. This object should register new
optimization or analysis passes. Once loaded, the object will
add new command line options to enable various optimizations or
analyses. To see the new complete list of optimizations, use the
and -load options together. For example:
opt -load=plugin.so -help
Print all available passes and exit.
EXIT STATUS
If opt succeeds, it will exit with 0. Otherwise, if an error occurs, it
will exit with a non-zero value.
AUTHOR
Maintained by the LLVM Team (https://llvm.org/).
COPYRIGHT
2003‐2024, LLVM Project
19 2024‐12‐18 OPT(1)
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