return MOVE_REDUCED;
return DefUseEffect.MOVE_FOLDED;
  private static byte getClassTib(OPT_Instruction s) {    if (CF_TIB) {      OPT_TypeOperand typeOp = Unary.getVal(s).asType();      if(typeOp.getTypeRef().isResolved()) {        Move.mutate(s, REF_MOVE,                    Unary.getClearResult(s),                    new OPT_TIBConstantOperand(typeOp.getTypeRef().peekResolvedType()));        return MOVE_REDUCED;      }    }    return UNCHANGED;  }