Added -b option to override the default bitcode output file name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76768 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CommandGuide/llvm-ld.pod b/docs/CommandGuide/llvm-ld.pod
index 224939c..536ab0f 100644
--- a/docs/CommandGuide/llvm-ld.pod
+++ b/docs/CommandGuide/llvm-ld.pod
@@ -104,6 +104,12 @@
 F<a.out> for compatibility with B<ld>. The output will be written to
 F<filename>.
 
+=item B<-b> F<filename>
+
+This option can be used to override the output bitcode file name. By default, 
+the name of the bitcode output file is one more ".bc" suffix added to the name 
+specified by B<-o filename> option.
+
 =item B<-l>F<name>
 
 This option specifies the F<name> of a library to search when resolving symbols