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还有这些函数应该是支持原地替换的。如果参数不需要留着的话还能再省下分配响应切片的时间和空间。 |
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把函数里那两个 tmp 切片删了,换成了 out 和 inData 的对应下标。内存使用次数明显下降了,而且性能也稍微高了一点。Sm4Cbc 那边感觉应该也可以这么改。
优化前:
优化后: