VirtRegMap.cpp

            InvalidateKills(MI, RegKills, KillOps);
            VRM.RemoveMachineInstrFromMaps(&MI);
            MBB.erase(&MI);
            Erased = true;
            UpdateKills(*LastStore, RegKills, KillOps, TRI);
            goto ProcessNextInst;
          }
        }
      }    
    }
  ProcessNextInst:
    DistanceMap.insert(std::make_pair(&MI, Dist++));
    if (!Erased && !BackTracked) {
      for (MachineBasicBlock::iterator II = &MI; II != NextMII; ++II)
        UpdateKills(*II, RegKills, KillOps, TRI);
    }
    MII = NextMII;
  }

}

llvm::Spiller* llvm::createSpiller() {
  switch (SpillerOpt) {
  default: assert(0 && "Unreachable!");
  case local:
    return new LocalSpiller();
  case simple:
    return new SimpleSpiller();
  }
}