OPT_Options options = ir.options;
    public final void perform (OPT_IR ir) {      OPT_Options options = ir.options;      if (OPT_IR.SANITY_CHECK) {        ir.verify("right before Final MIR Expansion", true);      }      ir.MIRInfo.mcSizeEstimate = OPT_FinalMIRExpansion.expand(ir);    }