<html>
<head>
<base href="https://llvm.org/bugs/" />
</head>
<body><span class="vcard"><a class="email" href="mailto:wenzel.jakob@epfl.ch" title="Wenzel Jakob <wenzel.jakob@epfl.ch>"> <span class="fn">Wenzel Jakob</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - AVX512 Regression: KNL backend does not use KNL processor features, SKX works"
href="https://llvm.org/bugs/show_bug.cgi?id=31817">bug 31817</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - AVX512 Regression: KNL backend does not use KNL processor features, SKX works"
href="https://llvm.org/bugs/show_bug.cgi?id=31817#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - AVX512 Regression: KNL backend does not use KNL processor features, SKX works"
href="https://llvm.org/bugs/show_bug.cgi?id=31817">bug 31817</a>
from <span class="vcard"><a class="email" href="mailto:wenzel.jakob@epfl.ch" title="Wenzel Jakob <wenzel.jakob@epfl.ch>"> <span class="fn">Wenzel Jakob</span></a>
</span></b>
<pre>You are right! -- and my bug report was nonsense. I had always assumed that the
extension to 32 registers and broadcasting were part of the EVEX encoding in
AVX512F and thus also applied to XMM* and YMM* on KNL. But they clearly aren't
(my KNL machine nicely confirms this by generating segfaults when it executes
these instructions).
Thank you for the clarification, and sorry about the noise!</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>