Index: llvm/docs/CommandGuide/opt.rst
===================================================================
--- llvm/docs/CommandGuide/opt.rst
+++ llvm/docs/CommandGuide/opt.rst
@@ -117,6 +117,10 @@
 
  Print module after each transformation.
 
+.. option:: -print-passes
+
+ Print all available passes and exit.
+
 EXIT STATUS
 -----------