alt Hacker NewsI haven't seen a strcpy use a scalar loop in ages. Is this an ARM thing?
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manwe150 • yesterday at 7:38 PM
The spec and some sanitizers use a scalar loop (because they need to avoid mistakenly detecting UB), but real world libc seem unlikely to use a scalar loop.
Modern x86 CPUs have actual instructions for strcpy that work fairly well. There were several false starts along the way, but the performance is fine now.