<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></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 Feb 11, 2016, at 4:19 PM, Jordan Rose <<a href="mailto:jordan_rose@apple.com" class="">jordan_rose@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" class=""><div class=""><br class="Apple-interchange-newline">On Feb 11, 2016, at 15:56, David Owens II <<a href="mailto:david@owensd.io" class="">david@owensd.io</a>> wrote:</div></blockquote></div></div></blockquote><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><blockquote type="cite" class=""><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="">Do you have any metrics on how often the disable safety metrics are used when compiling swift code?</div><div class=""><br class=""></div><div class="">C++ isn't know for being the bastion of doing versioning correctly. I agree it has the speed target that hopefully Swift can get to.</div><div class=""><br class=""></div><div class="">As for C#, unless you are talking about something I don't know about, ngen and JIT (runtime) are the only ways that the code will be inlined. However, when the assembly changes, that should invalidate the ngen'd image forcing it to be regenerated. Hence the entire feature for the TargetedPatchingOptOut on system framework dlls (selective replacement of the ngen'd images).</div><div class=""><br class=""></div><div class="">In any case, for apps, the scenario is largely irrelevant. To ship and update to that, I must do a recompile. This is mostly true for all ship mechanism on Apple platforms now any because.</div><div class=""><br class=""></div><div class="">Maybe it's a narrow enough surface area where this would actually be a practical issue such that it's largely irrelevant...</div></div></div></blockquote><br class=""></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Well,<span class="Apple-converted-space"> </span><i class="">Apple itself</i> will be using this model, so if there's a bug in an inlineable function<span class="Apple-converted-space"> </span><i class="">in Cocoa,</i> this could make a difference.</div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Unfortunately, I can't share any metrics about -O vs. -Ounchecked.</div></div></blockquote><br class=""></div><div>Sounds like you'll already need to plan for a `TargetedPatchingOptOut` feature then... it's a good question on how apps that consume inlineable framework code get updates without a recompile, especially for critical security fixes.</div><div><br class=""></div><div>-David</div><br class=""></body></html>