<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><span class="vcard"><a class="email" href="mailto:llvm-dev@redking.me.uk" title="Simon Pilgrim <llvm-dev@redking.me.uk>"> <span class="fn">Simon Pilgrim</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [X86] reduceBuildVecExtToExtBuildVec breaks uses of opportunity to use broadcast"
href="https://bugs.llvm.org/show_bug.cgi?id=46461">bug 46461</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;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr>
<tr>
<td style="text-align:right;">Fixed By Commit(s)</td>
<td>
</td>
<td>6bdb3ce4529ffbaad0354b052f2e9f06b4431085
</td>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [X86] reduceBuildVecExtToExtBuildVec breaks uses of opportunity to use broadcast"
href="https://bugs.llvm.org/show_bug.cgi?id=46461#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [X86] reduceBuildVecExtToExtBuildVec breaks uses of opportunity to use broadcast"
href="https://bugs.llvm.org/show_bug.cgi?id=46461">bug 46461</a>
from <span class="vcard"><a class="email" href="mailto:llvm-dev@redking.me.uk" title="Simon Pilgrim <llvm-dev@redking.me.uk>"> <span class="fn">Simon Pilgrim</span></a>
</span></b>
<pre>(In reply to Craig Topper from <a href="show_bug.cgi?id=46461#c0">comment #0</a>)
<span class="quote">> Should we disable reduceBuildVecExtToExtBuildVec for splat vectors or should
> we improve our broadcast matching? I kind of think that even without native
> broadcast we could still use pshufd to broadcast instead of multiple inserts.</span >
Fixed by
<a href="https://github.com/llvm/llvm-project/commit/6bdb3ce4529ffbaad0354b052f2e9f06b4431085">https://github.com/llvm/llvm-project/commit/6bdb3ce4529ffbaad0354b052f2e9f06b4431085</a>
Restricting reduceBuildVecExtToExtBuildVec zext cases to non-splat buildvectors
helped improve some broadcastm codegen as well.</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>