- Add "ResolvingCaller" to the CallSite record. This keeps track of which

function was finally able to resolve the function call.  Adding this allows
    the TD pass to actually work right!
  - Temporarily disable dead node pruning.  This will be reenabled soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4252 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/DataStructure/BottomUpClosure.cpp

@@ -143,7 +143,9 @@ DSGraph &BUDataStructures::calculateGraph(Function &F) {
             // Record that the original DSCallSite was a call site of FI.
             // This may or may not have been known when the DSCallSite was
             // originally created.
-            CallSites[&FI].push_back(Call);
+            std::vector<DSCallSite> &CallSitesForFunc = CallSites[&FI];
+            CallSitesForFunc.push_back(Call);
+            CallSitesForFunc.back().setResolvingCaller(&F);
 
             // Clone the callee's graph into the current graph, keeping
             // track of where scalars in the old graph _used_ to point,