<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 Sep 5, 2014, at 4:05 PM, Mark Lam <<a href="mailto:mark.lam@apple.com" class="">mark.lam@apple.com</a>> wrote:</div><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><div class=""><blockquote type="cite" class=""><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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;"><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 11pt; font-family: Calibri, sans-serif; text-indent: -0.25in;" class=""><span class="">4)<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Should I actually expect a performance increase compared to the “C LOOP”?</div></div></div></blockquote><div class=""><br class=""></div><div class="">Yes. The ASM LLINT should be faster than the C LOOP LLINT.</div></div></div></div></div></blockquote></div><br class=""><div class="">To clarify, the C LOOP LLINT emulated a CPU’s behavior using emitted C instructions. As a result, it incurs a performance penalty that is under 10% (vs the ASM LLINT) if I remember correctly. So, the perf gain you’ll get comes from recuperating the losses due to the C loop being a CPU emulator. You should not expect to see any of the more substantive gains that come from the JITs.</div><div class=""><br class=""></div><div class="">Regards,</div><div class="">Mark</div><div class=""><br class=""></div></body></html>