Now that the dead ctor is gone, nothing uses the old node mapping exported by
cloneInto: make it an internally used mapping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20760 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/BottomUpClosure.cpp b/lib/Analysis/DataStructure/BottomUpClosure.cpp
index acb4b30..0a9994c 100644
--- a/lib/Analysis/DataStructure/BottomUpClosure.cpp
+++ b/lib/Analysis/DataStructure/BottomUpClosure.cpp
@@ -267,10 +267,8 @@
            E = SCCGraphs.end(); I != E; ++I) {
       DSGraph &G = **I;
       if (&G != SCCGraph) {
-        {
-          DSGraph::NodeMapTy NodeMap;
-          SCCGraph->cloneInto(G, NodeMap);
-        }
+        SCCGraph->cloneInto(G);
+
         // Update the DSInfo map and delete the old graph...
         for (DSGraph::retnodes_iterator I = G.retnodes_begin(),
                E = G.retnodes_end(); I != E; ++I)
@@ -412,8 +410,7 @@
             // If the graph already contains the nodes for the function, don't
             // bother merging it in again.
             if (!GI->containsFunction(*I)) {
-              DSGraph::NodeMapTy NodeMap;
-              GI->cloneInto(getDSGraph(**I), NodeMap);
+              GI->cloneInto(getDSGraph(**I));
               ++NumBUInlines;
             }
 
diff --git a/lib/Analysis/DataStructure/CompleteBottomUp.cpp b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
index 7b7e62f..103c6bf 100644
--- a/lib/Analysis/DataStructure/CompleteBottomUp.cpp
+++ b/lib/Analysis/DataStructure/CompleteBottomUp.cpp
@@ -175,10 +175,7 @@
     DSGraph *NG = Stack.back();
     ValMap[NG] = ~0U;
 
-    {
-      DSGraph::NodeMapTy NodeMap;
-      FG.cloneInto(*NG, NodeMap);
-    }
+    FG.cloneInto(*NG);
 
     // Update the DSInfo map and delete the old graph...
     for (DSGraph::retnodes_iterator I = NG->retnodes_begin();
diff --git a/lib/Analysis/DataStructure/DataStructure.cpp b/lib/Analysis/DataStructure/DataStructure.cpp
index f76811a..b190b92 100644
--- a/lib/Analysis/DataStructure/DataStructure.cpp
+++ b/lib/Analysis/DataStructure/DataStructure.cpp
@@ -1168,8 +1168,7 @@
                  unsigned CloneFlags)
   : GlobalsGraph(0), ScalarMap(ECs), TD(G.TD) {
   PrintAuxCalls = false;
-  NodeMapTy NodeMap;
-  cloneInto(G, NodeMap, CloneFlags);
+  cloneInto(G, CloneFlags);
 }
 
 DSGraph::~DSGraph() {
@@ -1235,12 +1234,12 @@
 ///
 /// The CloneFlags member controls various aspects of the cloning process.
 ///
-void DSGraph::cloneInto(const DSGraph &G, NodeMapTy &OldNodeMap,
-                        unsigned CloneFlags) {
+void DSGraph::cloneInto(const DSGraph &G, unsigned CloneFlags) {
   TIME_REGION(X, "cloneInto");
-  assert(OldNodeMap.empty() && "Returned OldNodeMap should be empty!");
   assert(&G != this && "Cannot clone graph into itself!");
 
+  NodeMapTy OldNodeMap;
+
   // Remove alloca or mod/ref bits as specified...
   unsigned BitsToClear = ((CloneFlags & StripAllocaBit)? DSNode::AllocaNode : 0)
     | ((CloneFlags & StripModRefBits)? (DSNode::Modified | DSNode::Read) : 0)
diff --git a/lib/Analysis/DataStructure/EquivClassGraphs.cpp b/lib/Analysis/DataStructure/EquivClassGraphs.cpp
index a778d94..7632200 100644
--- a/lib/Analysis/DataStructure/EquivClassGraphs.cpp
+++ b/lib/Analysis/DataStructure/EquivClassGraphs.cpp
@@ -270,8 +270,7 @@
         }
         
         // Clone this member of the equivalence class into MergedG.
-        DSGraph::NodeMapTy NodeMap;    
-        MergedG.cloneInto(CBUGraph, NodeMap);
+        MergedG.cloneInto(CBUGraph);
       }
       
       // Merge the return nodes of all functions together.
@@ -362,10 +361,7 @@
 
     // If the SCC found is not the same as those found in CBU, make sure to
     // merge the graphs as appropriate.
-    {
-      DSGraph::NodeMapTy NodeMap;
-      FG.cloneInto(*NG, NodeMap);
-    }
+    FG.cloneInto(*NG);
 
     // Update the DSInfo map and delete the old graph...
     for (DSGraph::retnodes_iterator I = NG->retnodes_begin();
diff --git a/lib/Analysis/DataStructure/Steensgaard.cpp b/lib/Analysis/DataStructure/Steensgaard.cpp
index 734f26b..17863d1 100644
--- a/lib/Analysis/DataStructure/Steensgaard.cpp
+++ b/lib/Analysis/DataStructure/Steensgaard.cpp
@@ -123,10 +123,8 @@
   // into this graph.
   //
   for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
-    if (!I->isExternal()) {
-      DSGraph::NodeMapTy NodeMap;
-      ResultGraph->cloneInto(LDS.getDSGraph(*I), NodeMap, 0);
-    }
+    if (!I->isExternal())
+      ResultGraph->cloneInto(LDS.getDSGraph(*I));
 
   ResultGraph->removeTriviallyDeadNodes();