<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=""><div class="">My understanding is that -Ounchecked removes integer overflow checks and array bound checks.</div><div class=""><br class=""></div>What type of optimizations would -Oloop and -Ofunction do?<br class=""><div class="">
<br class="Apple-interchange-newline"><span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none;" class="">Félix</span>
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<br class=""><div><blockquote type="cite" class=""><div class="">Le 7 août 2016 à 19:27:56, Muse M via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="">I'm not sure if this is the right channel to discuss on optimization switch</div><div class=""><br class=""></div><div class="">We are aware the 3 options:</div>-O<div class="">-Ofast</div><div class="">-Ounchecked</div><div class=""><br class=""></div><div class="">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.</div><div class=""><br class=""></div><div class="">-OLoop (Optimize loop with safety)</div><div class="">-OFunc (Optimize function calls)<br class=""></div><div class="">and so on.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div>
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