ARM64: override all the things.

Actually, mostly only those in the top-level directory that already
had a "virtual" attached. But it's the thought that counts and it's
been a long day.

llvm-svn: 205131
diff --git a/llvm/lib/Target/ARM64/ARM64SelectionDAGInfo.h b/llvm/lib/Target/ARM64/ARM64SelectionDAGInfo.h
index 027b393..770775f 100644
--- a/llvm/lib/Target/ARM64/ARM64SelectionDAGInfo.h
+++ b/llvm/lib/Target/ARM64/ARM64SelectionDAGInfo.h
@@ -27,11 +27,10 @@
   explicit ARM64SelectionDAGInfo(const TargetMachine &TM);
   ~ARM64SelectionDAGInfo();
 
-  virtual SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc dl,
-                                          SDValue Chain, SDValue Dst,
-                                          SDValue Src, SDValue Size,
-                                          unsigned Align, bool isVolatile,
-                                          MachinePointerInfo DstPtrInfo) const;
+  SDValue EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc dl, SDValue Chain,
+                                  SDValue Dst, SDValue Src, SDValue Size,
+                                  unsigned Align, bool isVolatile,
+                                  MachinePointerInfo DstPtrInfo) const override;
 };
 }