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<body><span class="vcard"><a class="email" href="mailto:trass3r@gmail.com" title="Trass3r <trass3r@gmail.com>"> <span class="fn">Trass3r</span></a>
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<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Loop Vectorizer does not handle masked gather"
href="https://bugs.llvm.org/show_bug.cgi?id=35879">bug 35879</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<tr>
<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
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<td style="text-align:right;">Resolution</td>
<td>INVALID
</td>
<td>---
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Loop Vectorizer does not handle masked gather"
href="https://bugs.llvm.org/show_bug.cgi?id=35879#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Loop Vectorizer does not handle masked gather"
href="https://bugs.llvm.org/show_bug.cgi?id=35879">bug 35879</a>
from <span class="vcard"><a class="email" href="mailto:trass3r@gmail.com" title="Trass3r <trass3r@gmail.com>"> <span class="fn">Trass3r</span></a>
</span></b>
<pre>Not exactly. Let's forget about the int return type:
<a href="https://godbolt.org/g/dm8nvd">https://godbolt.org/g/dm8nvd</a>
control flow cannot be substituted for a select
value that could not be identified as reduction is used outside the loop
cannot identify array bounds
I disabled loop unroll to actually see some vectorizer analysis results.
Is it intentional that the unroller "overrides" the loop vectorizer?
Does the SLP vectorizer kick in after that? I couldn't find any analysis option
for it.</pre>
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