diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index e23024c..f2168b6 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -1400,7 +1400,7 @@
       // Otherwise, this is a load-store case, so DCE them.
       for (SmallPtrSet<MachineInstr*, 4>::iterator UI = 
            VNUseCount[CurrVN].begin(), UE = VNUseCount[CurrVN].end();
-           UI != UI; ++UI) {
+           UI != UE; ++UI) {
         LIs->RemoveMachineInstrFromMaps(*UI);
         (*UI)->eraseFromParent();
       }