Fix how we are handling unreachable functions. This DRAMATICALLY improves efficiency

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7082 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/DataStructure/BottomUpClosure.cpp

@@ -15,6 +15,7 @@
 namespace {
   Statistic<> MaxSCC("budatastructure", "Maximum SCC Size in Call Graph");
   Statistic<> NumBUInlines("budatastructures", "Number of graphs inlined");
+  Statistic<> NumCallEdges("budatastructures", "Number of 'actual' call edges");
   
   RegisterAnalysis<BUDataStructures>
   X("budatastructure", "Bottom-up Data Structure Analysis");
@@ -44,6 +45,8 @@ bool BUDataStructures::run(Module &M) {
 #endif
       calculateReachableGraphs(I);    // Calculate all graphs...
     }
+
+  NumCallEdges += ActualCallees.size();
   return false;
 }