Add one that I missed


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11179 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/CompleteBottomUp.cpp b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
index 5832701..1755c85 100644
--- a/lib/Analysis/DataStructure/CompleteBottomUp.cpp
+++ b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
@@ -77,6 +77,7 @@
     if (!I->isExternal() && !DSInfo.count(I))
       calculateSCCGraphs(getOrCreateGraph(*I), Stack, NextID, ValMap);
 
+  GlobalsGraph->removeTriviallyDeadNodes();
   return false;
 }