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author | Daniel Dunbar <daniel@zuster.org> | 2009-09-15 20:31:28 +0000 |
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committer | Daniel Dunbar <daniel@zuster.org> | 2009-09-15 20:31:28 +0000 |
commit | 6db36f3ce9df64d3ce29c42b1b365338965cd89d (patch) | |
tree | 60c01d72d860708358448741b6dfc16d7b39e450 /docs/CommandGuide/opt.pod | |
parent | 504f9a61e61ee274fe50d8300825bdc2e5adb9b0 (diff) |
Update llc/opt PODs to clarify they support .ll input.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81910 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/CommandGuide/opt.pod')
-rw-r--r-- | docs/CommandGuide/opt.pod | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/docs/CommandGuide/opt.pod b/docs/CommandGuide/opt.pod index a6c18b1872..d1d1db5ef6 100644 --- a/docs/CommandGuide/opt.pod +++ b/docs/CommandGuide/opt.pod @@ -11,24 +11,25 @@ B<opt> [I<options>] [I<filename>] =head1 DESCRIPTION The B<opt> command is the modular LLVM optimizer and analyzer. It takes LLVM -bitcode as input, runs the specified optimizations or analyses on it, and then -outputs the optimized LLVM bitcode or the analysis results. The function of +source files as input, runs the specified optimizations or analyses on it, and then +outputs the optimized file or the analysis results. The function of B<opt> depends on whether the B<-analyze> option is given. -When B<-analyze> is specified, B<opt> performs various analyses of LLVM -bitcode. It will usually print the results on standard output, but in a few -cases, it will print output to standard error or generate a file with the -analysis output, which is usually done when the output is meant for another -program. +When B<-analyze> is specified, B<opt> performs various analyses of the input +source. It will usually print the results on standard output, but in a few +cases, it will print output to standard error or generate a file with the +analysis output, which is usually done when the output is meant for another +program. While B<-analyze> is I<not> given, B<opt> attempts to produce an optimized -bitcode file. The optimizations available via B<opt> depend upon what +output file. 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 I<filename> is omitted from the command line or is I<->, B<opt> reads its -input from standard input. The input must be an LLVM bitcode file. +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 B<-o> option, B<opt> writes its output to the standard output. |