On Saturday, 27 November 2021 at 11:15:45 UTC, Igor wrote:
Two years ago there was a [Google Summer of Code
project](https://forum.dlang.org/thread/izaufklyvmktnwsrm...@forum.dlang.org) to implement these primitives in pure D for various reason. It was concluded the project isn't viable and was abandoned, but there were some interesting learnings. I now stumbled on some new work in C land about these that might be interesting to people that were following the original project so I am sharing it here:
Custom ASM implementation that outperforms libc:
https://github.com/nadavrot/memset_benchmark
Paper on automatic implementation of these primitives:
https://dl.acm.org/doi/pdf/10.1145/3459898.3463904
Also LLVM has intrinsics or special instructions for those libc
stuff. I suppose that there are special optimz that are tried and
if not possible that falls back to the libc version.
