public override bool Optimize(List <BaseBlock> codeBlocks)
        {
            var code = BaseBlockHelper.JoinBaseBlocks(codeBlocks);

            int startsz = code.Count;

            BaseBlockHelper.FixLabelsNumeration(code);

            var ncodeBlocks = BaseBlockHelper.GenBaseBlocks(code);
            var CFG         = new ControlFlowGraph(ncodeBlocks);

            ncodeBlocks = CFG.GetAliveBlocks();

            code = BaseBlockHelper.JoinBaseBlocks(ncodeBlocks);
            BaseBlockHelper.FixLabelsNumeration(code);
            codeBlocks.Clear();
            codeBlocks.InsertRange(0, BaseBlockHelper.GenBaseBlocks(code));
            return(startsz != code.Count);
        }