OPT_BasicBlock block = useBlock (use, op); lateBlock = commonDominator (block, lateBlock);
OPT_BasicBlock _block = useBlock (use, op); lateBlock = commonDominator (_block, lateBlock);
  private OPT_BasicBlock scheduleScalarUsesLate(OPT_Instruction inst, OPT_BasicBlock lateBlock) {    OPT_Operand resOp = getResult (inst);    if (resOp == null || !(resOp instanceof OPT_RegisterOperand))      return lateBlock;    OPT_Register res = ((OPT_RegisterOperand) resOp).register;    OPT_RegisterOperandEnumeration e = OPT_DefUse.uses (res);        while (e.hasMoreElements()) {      OPT_Operand op = e.next();      OPT_Instruction use = op.instruction;      OPT_BasicBlock block = useBlock (use, op);      lateBlock = commonDominator (block, lateBlock);    }    return  lateBlock;  }