diff --git a/llvm/lib/CodeGen/StrongPHIElimination.cpp b/llvm/lib/CodeGen/StrongPHIElimination.cpp
index 0fabd8e..76e6c99 100644
--- a/llvm/lib/CodeGen/StrongPHIElimination.cpp
+++ b/llvm/lib/CodeGen/StrongPHIElimination.cpp
@@ -674,7 +674,7 @@
     if (PHIColor && SrcColor == PHIColor) {
       LiveInterval &SrcInterval = LI->getInterval(SrcReg);
       SlotIndex PredIndex = LI->getMBBEndIdx(PredBB);
-      VNInfo *SrcVNI = SrcInterval.getVNInfoAt(PredIndex.getPrevIndex());
+      VNInfo *SrcVNI = SrcInterval.getVNInfoAt(PredIndex.getPrevSlot());
       assert(SrcVNI);
       SrcVNI->setHasPHIKill(true);
       continue;