diff --git a/llvm/include/llvm/IR/DerivedTypes.h b/llvm/include/llvm/IR/DerivedTypes.h
--- a/llvm/include/llvm/IR/DerivedTypes.h
+++ b/llvm/include/llvm/IR/DerivedTypes.h
@@ -515,10 +515,6 @@
     return EC;
   }
 
-  /// Returns whether or not this is a scalable vector (meaning the total
-  /// element count is a multiple of the minimum).
-  bool isScalable() const { return EC.Scalable; }
-
   /// Methods for support type inquiry through isa, cast, and dyn_cast.
   static bool classof(const Type *T) {
     return T->getTypeID() == FixedVectorTyID ||