4'd6:begin count_r1=count<<2; count_r2=count_r1+count; // if(count<64) begin if(count[7:6]==0) begin raddr_data1<=count_r1; raddr_data2<=(count_r1)+1; raddr_data3<=(count_r1)+2; raddr_data4<=(count_r1)+3; raddr_w1<=(count_r2)+105; raddr_w2<=(count_r2)+106; raddr_w3<=(count_r2)+107; raddr_w4<=(count_r2)+108; raddr_w5<=(count_r2)+109; end else begin raddr_data1<=0; raddr_data2<=0; raddr_data3<=0; raddr_data4<=0; raddr_w1<=0; raddr_w2<=0; raddr_w3<=0; raddr_w4<=0; raddr_w5<=0; end end 可以怎么优化?
时间: 2024-02-10 17:11:49 浏览: 96
计算优化1
这段代码中,可以发现对于 `count` 的值,如果其高 2 位为 0,就会执行一些操作,否则会执行另一些操作。那么可以将这个分支语句改写为使用三目运算符的方式,这样可以减少分支语句的数量,从而提高代码的可读性和执行效率。改写后的代码如下:
```
raddr_data1 <= (count[7:6] == 0) ? count << 2 : 0;
raddr_data2 <= (count[7:6] == 0) ? (count << 2) + 1 : 0;
raddr_data3 <= (count[7:6] == 0) ? (count << 2) + 2 : 0;
raddr_data4 <= (count[7:6] == 0) ? (count << 2) + 3 : 0;
raddr_w1 <= (count[7:6] == 0) ? count_r2 + 105 : 0;
raddr_w2 <= (count[7:6] == 0) ? count_r2 + 106 : 0;
raddr_w3 <= (count[7:6] == 0) ? count_r2 + 107 : 0;
raddr_w4 <= (count[7:6] == 0) ? count_r2 + 108 : 0;
raddr_w5 <= (count[7:6] == 0) ? count_r2 + 109 : 0;
```
这样可以减少代码中的分支语句数量,同时也可以提高代码的可读性和执行效率。
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