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author | Misha Brukman <brukman+llvm@gmail.com> | 2004-07-01 15:25:04 +0000 |
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committer | Misha Brukman <brukman+llvm@gmail.com> | 2004-07-01 15:25:04 +0000 |
commit | 6998517a9cac5f51bba6c02f09acee945ffb9c0f (patch) | |
tree | abeb5ab4095676ab7e7d59800df8e754faf52154 /docs/CommandGuide/opt.pod | |
parent | f19aa2e67e67a70fb6f2089206701f6fca32ad4b (diff) |
Fresh from the LLVM baker's oven: opt and analyze pods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14529 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/CommandGuide/opt.pod')
-rw-r--r-- | docs/CommandGuide/opt.pod | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/docs/CommandGuide/opt.pod b/docs/CommandGuide/opt.pod new file mode 100644 index 0000000000..bd27ec17f9 --- /dev/null +++ b/docs/CommandGuide/opt.pod @@ -0,0 +1,99 @@ + +=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 + |