diff --git a/llvm/lib/CodeGen/PreAllocSplitting.cpp b/llvm/lib/CodeGen/PreAllocSplitting.cpp
index 2f49e25..6b37637 100644
--- a/llvm/lib/CodeGen/PreAllocSplitting.cpp
+++ b/llvm/lib/CodeGen/PreAllocSplitting.cpp
@@ -846,9 +846,9 @@
     VNInfo* NewVN = LI->getNextValue(DefIdx, 0, Alloc);
     
     // If the def is a move, set the copy field.
-    unsigned source, dest;
-    if (TII->isMoveInstr(*DI, source, dest))
-      if (dest == LI->reg)
+    unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
+    if (TII->isMoveInstr(*DI, SrcReg, DstReg, SrcSubIdx, DstSubIdx))
+      if (DstReg == LI->reg)
         NewVN->copy = &*DI;
     
     NewVNs[&*DI] = NewVN;