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<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 - [AVX] opportunity for better code with masked stores"
href="https://bugs.llvm.org/show_bug.cgi?id=11210">bug 11210</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;">CC</td>
<td>
</td>
<td>craig.topper@gmail.com
</td>
</tr>
<tr>
<td style="text-align:right;">Fixed By Commit(s)</td>
<td>
</td>
<td>3170d5484265,e2dee9af8db6
</td>
</tr>
<tr>
<td style="text-align:right;">Component</td>
<td>Scalar Optimizations
</td>
<td>Backend: X86
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [AVX] opportunity for better code with masked stores"
href="https://bugs.llvm.org/show_bug.cgi?id=11210#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [AVX] opportunity for better code with masked stores"
href="https://bugs.llvm.org/show_bug.cgi?id=11210">bug 11210</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>Tentatively resolving this - test cases were added at rGe2dee9af8db6 to show
@kparzysz's DSE fixes in action.
I played with auto upgrading the intrinsics but the non-optimized codegen was
really awful - I can revisit it if people think its worth it.
Instead, I've just extended the instcombine handling at rG3170d5484265 - where
before we just folded constant masks to generic masked loads/stores, we now do
it for any sign-extended bool vector. This already worked nicely for
BLENDV->SELECT combines (which have a similar sign-bit selection mask
mechanism) so should be fine for masked loads/stores as well.</pre>
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