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/SelectionDAGCSEMap.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGCSEMap.cpp
index de5302a..b42c70b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGCSEMap.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGCSEMap.cpp
@@ -64,6 +64,7 @@
     case ISD::TargetConstantPool:
       AddInteger(cast<ConstantPoolSDNode>(N)->getAlignment());
       AddInteger(cast<ConstantPoolSDNode>(N)->getOffset());
+      AddPointer(cast<ConstantPoolSDNode>(N)->get());
       break;
     }
   }