Update documentation for the -f change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79996 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CommandGuide/llc.pod b/docs/CommandGuide/llc.pod
index eba7859..7a7bbca 100644
--- a/docs/CommandGuide/llc.pod
+++ b/docs/CommandGuide/llc.pod
@@ -49,8 +49,9 @@
=item B<-f>
-Overwrite output files. By default, B<llc> will refuse to overwrite
-an output file which already exists.
+Enable binary output on terminals. Normally, B<llvm-extract> will refuse to
+write raw bitcode output if the output stream is a terminal. With this option,
+B<llvm-extract> will write raw bitcode regardless of the output device.
=item B<-mtriple>=I<target triple>