Add a forgotten VireReg2IndexFunctor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123123 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index 180b43b..cbc96bb 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -80,7 +80,7 @@
 
     /// Virt2SplitKillMap - This is splitted virtual register to its last use
     /// (kill) index mapping.
-    IndexedMap<SlotIndex> Virt2SplitKillMap;
+    IndexedMap<SlotIndex, VirtReg2IndexFunctor> Virt2SplitKillMap;
 
     /// ReMatMap - This is virtual register to re-materialized instruction
     /// mapping. Each virtual register whose definition is going to be