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Ancient Spirit

ASM and C question

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Yes, but there's not much point. If you use std::copy() the compiler will likely generate the same or better code than you would using assembly.

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Try this:
__asm {
lea esi,arr1
lea edi,arr2
mov ecx,20
rep movsd
Still.. It's pretty pointless in itself, an intrinsic memcpy should be equally fast (probably even faster since it can interleave the instructions freely with nearby code).

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