mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-29 23:12:55 +01:00
100 lines
2.1 KiB
Plaintext
100 lines
2.1 KiB
Plaintext
|
|
||
|
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
opt - LLVM optimizer
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
opt [options] [filename]
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
The B<opt> command is the modular LLVM optimizer. It takes LLVM
|
||
|
|
bytecode as input, runs the specified optimizations on it, and then
|
||
|
|
outputs the optimized LLVM bytecode.
|
||
|
|
|
||
|
|
The optimizations available via B<opt> depend upon what libraries
|
||
|
|
were linked into it as well as any additional libraries that have
|
||
|
|
been loaded with the B<-load> option. Use the B<-help> option to
|
||
|
|
determine what optimizations you can use.
|
||
|
|
|
||
|
|
If no filename is specified on the command line, B<opt> reads its
|
||
|
|
input from standard input.
|
||
|
|
|
||
|
|
If an output filename is not specified with the B<-o> option, B<opt>
|
||
|
|
writes its output to the standard output.
|
||
|
|
|
||
|
|
=head1 OPTIONS
|
||
|
|
|
||
|
|
=over
|
||
|
|
|
||
|
|
=item B<-f>
|
||
|
|
|
||
|
|
Force overwrite. Normally, B<opt> will refuse to overwrite an
|
||
|
|
output file that already exists. With this option, B<opt> will
|
||
|
|
overwrite the output file and replace it with new bytecode.
|
||
|
|
|
||
|
|
=item B<-help>
|
||
|
|
|
||
|
|
Print a summary of command line options.
|
||
|
|
|
||
|
|
=item B<-o> I<filename>
|
||
|
|
|
||
|
|
Specify the output filename.
|
||
|
|
|
||
|
|
=item B<-profile-info-file> I<filename>
|
||
|
|
|
||
|
|
Specify the name of the file loaded by the -profile-loader option.
|
||
|
|
|
||
|
|
=item B<-stats>
|
||
|
|
|
||
|
|
Print statistics.
|
||
|
|
|
||
|
|
=item B<-time-passes>
|
||
|
|
|
||
|
|
Record the amount of time needed for each pass and print it to standard
|
||
|
|
error.
|
||
|
|
|
||
|
|
=item B<-debug>
|
||
|
|
|
||
|
|
If this is a debug build, this option will enable debug printouts
|
||
|
|
from passes which use the I<DEBUG()> macro. See the B<LLVM Programmer's
|
||
|
|
Manual>, section I<#DEBUG> for more information.
|
||
|
|
|
||
|
|
=item B<-load>=I<plugin>
|
||
|
|
|
||
|
|
Load the dynamic object I<plugin>. This object should register new
|
||
|
|
optimization passes. Once loaded, the object will add new command line
|
||
|
|
options to enable various optimizations. To see the new complete list
|
||
|
|
of optimizations, use the B<-help> and B<-load> options together:
|
||
|
|
|
||
|
|
=over
|
||
|
|
|
||
|
|
B<opt -load>=I<plugin> B<-help>
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=item B<-p>
|
||
|
|
|
||
|
|
Print module after each transformation.
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 EXIT STATUS
|
||
|
|
|
||
|
|
If B<opt> succeeds, it will exit with 0. Otherwise, if an error
|
||
|
|
occurs, it will exit with a non-zero value.
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<analyze>
|
||
|
|
|
||
|
|
=head1 AUTHORS
|
||
|
|
|
||
|
|
Maintained by the LLVM Team (L<http://llvm.cs.uiuc.edu>).
|
||
|
|
|
||
|
|
=cut
|
||
|
|
|