Add the actual constant to the hash for ConstantPool nodes.  Thanks to
Rafael Espindola for pointing this out.

llvm-svn: 29669
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 72a7d33..6fd8ba2 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -583,6 +583,7 @@
   SelectionDAGCSEMap::NodeID ID(Opc, getNodeValueTypes(VT));
   ID.AddInteger(Alignment);
   ID.AddInteger(Offset);
+  ID.AddPointer(C);
   void *IP = 0;
   if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
     return SDOperand(E, 0);