title: What does "strip Swift symbols" in Xcode actually do?
body: <p>When exporting an archive of a project containing Swift, we get the option to "strip Swift symbols". I haven't seen any difference in app size though in a project with just one dummy Swift file, thus a perfect case for maximum stripping.</p>
  
  <p>What does this do exactly and how does it affect the final app size (.ipa)?</p>
  
  <p><a href="https://i.stack.imgur.com/w8ukq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/w8ukq.png" alt="enter image description here"></a></p>
  
  <p>P.S: as seen in Xcode 9 beta 6</p>
  
  <p>UPDATE: actually I can observe a slight ipa size reduction (3.4 MB uncompressed) when looking at specific devices variants (not for universal variant though) </p>