<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Apr 7, 2012, at 12:22 PM, Chandler Carruth wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-converted-space"> </span>As<br>a consequence (and this how I got to this yak) any profiling of<br>performance problems should be treated with deep suspicion -- they may<br>have been wildly innacurate of debug info was enabled for profiling. =/</span></blockquote></div><br><div>I know some people did an audit of the passes a while ago to make sure</div><div>that debug information didn't affect the output of the pass. Looks like they</div><div>missed a few, but in general it shouldn't be too widespread.</div><div><br></div><div>-eric</div></body></html>