--- a/mercurial/debugcommands.py	Sat Jul 21 16:16:44 2018 +0900
+++ b/mercurial/debugcommands.py	Sat Jul 21 15:52:26 2018 +0900
@@ -902,6 +902,7 @@
     stages = [
         ('parsed', pycompat.identity),
         ('analyzed', filesetlang.analyze),
+        ('optimized', filesetlang.optimize),
     ]
     stagenames = set(n for n, f in stages)