memcpy 2 4 maybe slower than "repeat2_incr"

[wj5449]

Please use English to communicate so that people from other countries can understand it. i heared about memcpy when copy little string is slower than = because of the memcpy use call instrustion. on my computer memcpy 2 is slower than "repeat2_incr" memcpytest.txt

[wj5449]

i don't know about what value of strlength choose which function is faster

[ibireme]

The compiler will do the optimization for you, and usually they produce the exact same instructions, see: https://godbolt.org/z/4nEr4bKbT