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CCS 软件的Opt Level 优化问题?????



为了测试功能,在   while(1)  {  i++;  },  进行累加,然后定时串口输出 i 值。当我Opt Level 开none 时, 变量 i 是有值得 ,但是当Opt Level 开  File(-o3)  时,变量 i 就一直等于 0;这是为什么??????

还有当 Opt Level 开  File(-o3)  时,dsp是否是八级流水线工作模式???????