> On Nov 3, 2017, at 10:23 PM, Slava Pestov via swift-dev <swift-dev@swift.org> 
> wrote:
> 
> 
> 
>> On Nov 3, 2017, at 8:57 PM, Chris Lattner via swift-dev <swift-dev@swift.org 
>> <mailto:swift-dev@swift.org>> wrote:
>> 
>> Random question: when did you introduce -Osize, and why didn’t it go through 
>> the evolution process?  If this is a major flag that you expect users to 
>> interact with (not some obscure debugging feature) then it is part of the 
>> “UI" of Swift and seems subject to swift-evolution’s process.
> 
> Are compiler flags within the scope of the evolution process? -Osize has no 
> effect on source compatibility or any other user-visible aspect of the 
> language itself.

I don’t think there is an official policy, but IMO, all major new user visible 
features are in scope for evolution.

-Chris


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