Index: include/llvm/Object/ELFObjectFile.h
===================================================================
--- include/llvm/Object/ELFObjectFile.h
+++ include/llvm/Object/ELFObjectFile.h
@@ -74,9 +74,9 @@
 
   SubtargetFeatures getFeatures() const override;
 
-  SubtargetFeatures getMIPSFeatures() const override;
+  SubtargetFeatures getMIPSFeatures() const;
 
-  SubtargetFeatures getARMFeatures() const override;
+  SubtargetFeatures getARMFeatures() const;
 
   void setARMSubArch(Triple &TheTriple) const override;
 };
Index: include/llvm/Object/ObjectFile.h
===================================================================
--- include/llvm/Object/ObjectFile.h
+++ include/llvm/Object/ObjectFile.h
@@ -267,8 +267,6 @@
   virtual StringRef getFileFormatName() const = 0;
   virtual /* Triple::ArchType */ unsigned getArch() const = 0;
   virtual SubtargetFeatures getFeatures() const = 0;
-  virtual SubtargetFeatures getMIPSFeatures() const { return SubtargetFeatures(); }
-  virtual SubtargetFeatures getARMFeatures() const { return SubtargetFeatures(); }
   virtual void setARMSubArch(Triple &TheTriple) const { }
 
   /// Returns platform-specific object flags, if any.