[swift-evolution] More fine tuning optimization to swift compiler

Félix Cloutier felixcca at yahoo.ca
Tue Aug 9 10:21:32 CDT 2016

My understanding is that -Ounchecked removes integer overflow checks and array bound checks.

What type of optimizations would -Oloop and -Ofunction do?


> Le 7 août 2016 à 19:27:56, Muse M via swift-evolution <swift-evolution at swift.org> a écrit :
> I'm not sure if this is the right channel to discuss on optimization switch
> We are aware the 3 options:
> -O
> -Ofast
> -Ounchecked
> As we can see, we rarely use -Ounchecked for safety reason and there aren't much info on what are the tradeoff. if there are performance reason that will need to improve loop or maths optimization or allow developers to fine-tuning in various area, we could add more options to compiler.
> -OLoop (Optimize loop with safety)
> -OFunc (Optimize function calls)
> and so on.
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