More consts on TargetLowering references.

llvm-svn: 62262
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 34f33b0..b83d537 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -4982,7 +4982,7 @@
       return "<<Unknown Machine Node>>";
     }
     if (G) {
-      TargetLowering &TLI = G->getTargetLoweringInfo();
+      const TargetLowering &TLI = G->getTargetLoweringInfo();
       const char *Name = TLI.getTargetNodeName(getOpcode());
       if (Name) return Name;
       return "<<Unknown Target Node>>";