diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp
--- a/llvm/lib/CodeGen/RegisterCoalescer.cpp
+++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp
@@ -1359,7 +1359,7 @@
   MachineBasicBlock *MBB = CopyMI->getParent();
   MachineBasicBlock::iterator MII =
     std::next(MachineBasicBlock::iterator(CopyMI));
-  TII->reMaterialize(*MBB, MII, DstReg, SrcIdx, *DefMI, *TRI);
+  TII->reMaterialize(*MBB, MII, DstReg, DstIdx, *DefMI, *TRI);
   MachineInstr &NewMI = *std::prev(MII);
   NewMI.setDebugLoc(DL);