<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Dec 23, 2011, at 3:00 AM, Chandler Carruth wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div class="gmail_quote">On Thu, Dec 22, 2011 at 1:06 PM, Chad Rosier <span dir="ltr"><<a href="mailto:mcrosier@apple.com">mcrosier@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":2au">Reinstate r146578; it doesn't appear to be the cause of some recent execution-<br>
time regressions.</div></blockquote></div><br><div>FYI, I'm also tracking down some recent execution time regressions on x86...</div><div><br></div><div>I've got a firm lead on least some of them, and they stem from my CTTZ / CTLZ work. I should have fixes in tomorrow I suspect for the specific bad code I've spotted coming out of these, but any benchmark data or test cases you come across would likely help.</div>
</blockquote></div><br><div>Thanks, Chandler. I'll keep an eye out for related regressions.</div><div><br></div><div> Chad</div></body></html>