diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index bfe0a0e..5cb42e6 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -426,6 +426,8 @@
   virtual void doAddressOptOther() {}
   virtual void doAddressOptLoad() {}
   virtual void doAddressOptStore() {}
+  virtual void doAddressOptLoadSubVector() {}
+  virtual void doAddressOptStoreSubVector() {}
   virtual void doMockBoundsCheck(Operand *) {}
   virtual void randomlyInsertNop(float Probability,
                                  RandomNumberGenerator &RNG) = 0;