<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Thanks, I’ll try that. Any reason why it’d only affect older (but only by a few months) kernels?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:cfe-dev@lists.llvm.org">Joerg Sonnenberger via cfe-dev</a><br><b>Sent: </b>Sunday, August 14, 2016 1:59 PM<br><b>To: </b><a href="mailto:cfe-dev@lists.llvm.org">cfe-dev@lists.llvm.org</a><br><b>Subject: </b>Re: [cfe-dev] Weird ud2 generation</p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal>On Sun, Aug 14, 2016 at 01:43:43PM -0500, via cfe-dev wrote:</p><p class=MsoNormal>> I’m wondering if either a) someone recognizes this off the bat as</p><p class=MsoNormal>> something Clang uses for some purpose, or b) if someone with more</p><p class=MsoNormal>> experience with Clang, or the V8 codebase could help with solving?</p><p class=MsoNormal>> The part where it’s related to the kernel version is what’s really throwing me off... </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>ud2 is used for __builtin_trap() and a few other cases of implicit stop</p><p class=MsoNormal>instructions. But the most likely candidate is the former. A good start</p><p class=MsoNormal>for further debugging on your part is the -save-temps output. It should</p><p class=MsoNormal>created annotated assembly, giving you some clue for where the</p><p class=MsoNormal>instruction comes from.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Joerg</p><p class=MsoNormal>_______________________________________________</p><p class=MsoNormal>cfe-dev mailing list</p><p class=MsoNormal>cfe-dev@lists.llvm.org</p><p class=MsoNormal>http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>