"Today we're gonna talk about how memcpy is implemented..." *opens source code for a typical memcpy* *stares dumbfounded for 10 seconds, closes file* "Today we'll talk about file systems."
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I didn't want to jmp in a tweet. But indeed even on a 386 rep movsd is the way to go
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implement all the fancy high performance memcpy stuff in microcode for rep movsb send tweet
End of conversation
New conversation -
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Oh why is that the case? Is it µC optimized? I mean just intuitively I would think that copying in double the word size would be faster
Thanks. Twitter will use this to make your timeline better. UndoUndo
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