Myth: Your compiler is always smarter than you
Truth: No it's not for some "you", and you CAN acquire the knowledge to (frequently) beat it in your domain.
A 2h demonstration by @cmuratori
https://www.youtube.com/watch?v=R5tBY9Zyw6o …
I'd love a commentary by @rygorous on the inidividual findings.
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I don't think there were any "findings" here, it was just a CLANG optimizer bug.
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(Although obviously I support the original intent of the tweet as well, since the only way you know when the optimizer is doing poorly is if you know better than it in the first place :)
2:52 PM - 3 Oct 2020
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