eliminate the ability to remove global nodes from deadNodeElminate... for now.

This slows stuff down a bit, but it should get much better before it gets any
worse.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4666 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/DataStructure/Steensgaard.cpp

@@ -194,7 +194,7 @@ bool Steens::run(Module &M) {
   ResultGraph->markIncompleteNodes(false);
 
   // Remove any nodes that are dead after all of the merging we have done...
-  ResultGraph->removeDeadNodes(true);
+  ResultGraph->removeDeadNodes();
 
   DEBUG(print(std::cerr, &M));
   return false;