Header warning patrol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122152 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/ValueHandle.h b/include/llvm/Support/ValueHandle.h
index 3fdef6b54500a6cb46a1467c7d3e07df86d1fad6..7e5bc1b4cf451495265443f8c5017700ae15db6e 100644 (file)
--- a/include/llvm/Support/ValueHandle.h
+++ b/include/llvm/Support/ValueHandle.h
@@ -394,7 +394,7 @@ public:
   /// Called when a new Use is added to the use-list of this->getValPtr(),
   /// after the Use has been appended to the list.  Other VH kinds would ignore
   /// this callback, but clients can use it to trigger re-analysis of Values.
-  virtual void addedUse(Use &U) {}
+  virtual void addedUse(Use &) {}
 };
 
 // Specialize simplify_type to allow CallbackVH to participate in