[fpc-devel] Interesting short article about optimisation

J. Gareth Moreton gareth at moreton-family.com
Sun Nov 26 00:10:13 CET 2023


I just stumbled across this article about micro-architecture-specific 
optimisations in ARM: 
https://www.phoronix.com/news/ARM64-Linux-No-Uarch-Opts

They briefly mention x86_64, and I agree it's good to avoid 
micro-architecture-specific optimisations and now it makes me wonder 
where the line is drawn, like the recent introduction of the optimizer 
hint regarding LEA instructions being slow on some middle-aged CPUs.

Kit



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