private ScratchRegister getCurrentScratchRegister(OPT_Register r) {
private ScratchRegister getCurrentScratchRegister(OPT_Register r,OPT_Instruction s) {
  private ScratchRegister getCurrentScratchRegister(OPT_Register r) {    ScratchRegister result = null;    for (Iterator i = scratchInUse.iterator(); i.hasNext(); ) {      ScratchRegister sr = (ScratchRegister)i.next();      if (sr.currentContents == r) {        return sr;      }      int location = OPT_RegisterAllocatorState.getSpill(sr.currentContents);      int location2 = OPT_RegisterAllocatorState.getSpill(r);       if (location == location2) {        return sr;      }    }    return null;  }