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<body><span class="vcard"><a class="email" href="mailto:spatel+llvm@rotateright.com" title="Sanjay Patel <spatel+llvm@rotateright.com>"> <span class="fn">Sanjay Patel</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [x86] shuffle lowering should try harder to match unpack"
href="https://bugs.llvm.org/show_bug.cgi?id=40434">bug 40434</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Fixed By Commit(s)</td>
<td>
</td>
<td>r352380
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [x86] shuffle lowering should try harder to match unpack"
href="https://bugs.llvm.org/show_bug.cgi?id=40434#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [x86] shuffle lowering should try harder to match unpack"
href="https://bugs.llvm.org/show_bug.cgi?id=40434">bug 40434</a>
from <span class="vcard"><a class="email" href="mailto:spatel+llvm@rotateright.com" title="Sanjay Patel <spatel+llvm@rotateright.com>"> <span class="fn">Sanjay Patel</span></a>
</span></b>
<pre>This turns out to be more complicated than I was imagining, and it's at least
partly my fault. :)
I added code to form 256-bit vperm with:
<a href="https://reviews.llvm.org/rL351346">https://reviews.llvm.org/rL351346</a>
So now we have to dance around that to avoid infinite-looping reverse
transforms:
<a href="https://reviews.llvm.org/rL352333">https://reviews.llvm.org/rL352333</a>
This particular case should be fixed with:
<a href="https://reviews.llvm.org/rL352380">https://reviews.llvm.org/rL352380</a></pre>
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