diff --git a/llvm/lib/CodeGen/MachineCopyPropagation.cpp b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
index 602c1fa..a686341 100644
--- a/llvm/lib/CodeGen/MachineCopyPropagation.cpp
+++ b/llvm/lib/CodeGen/MachineCopyPropagation.cpp
@@ -54,7 +54,6 @@
                                  SourceMap &SrcMap,
                                  DenseMap<unsigned, MachineInstr*> &AvailCopyMap);
     bool CopyPropagateBlock(MachineBasicBlock &MBB);
-    void removeCopy(MachineInstr *MI);
   };
 }
 char MachineCopyPropagation::ID = 0;
@@ -127,13 +126,6 @@
   return false;
 }
 
-// Remove MI from the function because it has been determined it is dead.
-// Turn it into a noop KILL instruction as opposed to removing it to
-// maintain imp-use/imp-def chains.
-void MachineCopyPropagation::removeCopy(MachineInstr *MI) {
-  MI->setDesc(TII->get(TargetOpcode::KILL));
-}
-
 bool MachineCopyPropagation::CopyPropagateBlock(MachineBasicBlock &MBB) {
   SmallSetVector<MachineInstr*, 8> MaybeDeadCopies;  // Candidates for deletion
   DenseMap<unsigned, MachineInstr*> AvailCopyMap;    // Def -> available copies map
@@ -183,7 +175,7 @@
           for (MachineBasicBlock::iterator I = CopyMI, E = MI; I != E; ++I)
             I->clearRegisterKills(Def, TRI);
 
-          removeCopy(MI);
+          MI->eraseFromParent();
           Changed = true;
           ++NumDeletes;
           continue;
@@ -291,7 +283,7 @@
           continue;
         DEBUG(dbgs() << "MCP: Removing copy due to regmask clobbering: ";
               (*DI)->dump());
-        removeCopy(*DI);
+        (*DI)->eraseFromParent();
         Changed = true;
         ++NumDeletes;
       }
@@ -327,7 +319,7 @@
            DI = MaybeDeadCopies.begin(), DE = MaybeDeadCopies.end();
          DI != DE; ++DI) {
       if (!MRI->isReserved((*DI)->getOperand(0).getReg())) {
-        removeCopy(*DI);
+        (*DI)->eraseFromParent();
         Changed = true;
         ++NumDeletes;
       }