diff --git a/llvm/lib/IR/AttributeImpl.h b/llvm/lib/IR/AttributeImpl.h
index 46eb4a1660280..1306c81adf4f2 100644
--- a/llvm/lib/IR/AttributeImpl.h
+++ b/llvm/lib/IR/AttributeImpl.h
@@ -253,8 +253,6 @@ class AttributeSetNode final
   }
 };
 
-using IndexAttrPair = std::pair<unsigned, AttributeSet>;
-
 //===----------------------------------------------------------------------===//
 /// \class
 /// This class represents a set of attributes that apply to the function,