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关于boxFilter的测试 #8

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xgbj opened this issue Jun 27, 2022 · 1 comment

xgbj commented Jun 27, 2022

求问为啥后面的neon指令看上去并没有加速很多？这里面的原因是为啥？

Owner

Ldpe2G commented Oct 20, 2022

其实加速收益很大部分来自于行列分离，就是算法上的改进，。因为编译器也会自己用上一些向量化的指令，而且boxfiler也没有什么复杂的计算，所以再加上neon指令收益就不大了。

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