<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Nov 3, 2017, at 10:23 PM, Slava Pestov via swift-dev <<a href="mailto:swift-dev@swift.org" class="">swift-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On Nov 3, 2017, at 8:57 PM, Chris Lattner via swift-dev <<a href="mailto:swift-dev@swift.org" class="">swift-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">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.</span></div></blockquote></div><br class=""><div class="">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.</div></div></div></blockquote><br class=""></div><div>I don’t think there is an official policy, but IMO, all major new user visible features are in scope for evolution.</div><div><br class=""></div><div>-Chris</div><div><br class=""></div><br class=""></body></html>