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| author | Bill Wendling <isanbard@gmail.com> | 2009-04-29 00:15:41 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2009-04-29 00:15:41 +0000 |
| commit | 084669a1c94ec215e8366ec827ffec21d5a4afeb (patch) | |
| tree | 2e42e4bcd5ed3fc32d36f4b0db1bcaa6a800dc4b /llvm/docs/CommandGuide | |
| parent | d4eb8424044bf1c1d2b9e9a5fb4596a014765cdf (diff) | |
| download | bcm5719-llvm-084669a1c94ec215e8366ec827ffec21d5a4afeb.tar.gz bcm5719-llvm-084669a1c94ec215e8366ec827ffec21d5a4afeb.zip | |
Second attempt:
Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.
Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.
llvm-svn: 70343
Diffstat (limited to 'llvm/docs/CommandGuide')
| -rw-r--r-- | llvm/docs/CommandGuide/llc.pod | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/docs/CommandGuide/llc.pod b/llvm/docs/CommandGuide/llc.pod index f5fd34f01ab..eba7859e288 100644 --- a/llvm/docs/CommandGuide/llc.pod +++ b/llvm/docs/CommandGuide/llc.pod @@ -41,6 +41,12 @@ Other B<llc> options are as follows: Print a summary of command line options. +=item B<-O>=I<uint> + +Generate code at different optimization levels. These correspond to the I<-O0>, +I<-O1>, I<-O2>, I<-O3>, and I<-O4> optimization levels used by B<llvm-gcc> and +B<clang>. + =item B<-f> Overwrite output files. By default, B<llc> will refuse to overwrite |
