private static void unrollLoops(OPT_IR ir) {
void unrollLoops(OPT_IR ir) {
  private static void unrollLoops(OPT_IR ir) {    OPT_LSTGraph lstg = ir.HIRInfo.LoopStructureTree;        for (int i = 1;  lstg != null && i <= 1;  ++i) {      unrollLoopTree((OPT_LSTNode)lstg.firstNode(), ir, i);      (new OPT_BuildLST()).perform(ir);    }  }