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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Regression 3.9.1] Wrong colors in icons when using radeonsi + LLVM 3.9.1"
href="https://llvm.org/bugs/show_bug.cgi?id=31722">31722</a>
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<th>Summary</th>
<td>[Regression 3.9.1] Wrong colors in icons when using radeonsi + LLVM 3.9.1
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>3.9
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: AMDGPU
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nhaehnle@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>See the reports at:
<a href="https://bugs.freedesktop.org/show_bug.cgi?id=99078">https://bugs.freedesktop.org/show_bug.cgi?id=99078</a>
<a href="https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-3.9/+bug/1656620?comments=all">https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-3.9/+bug/1656620?comments=all</a>
This has been tracked down to r288105, the backport of "AMDGPU: Fix an
interaction between WQM and polygon stippling".
Looking at shader dumps from the bug reports, there are shaders affected by the
bug that was fixed by "AMDGPU: Do not clobber SCC in SIWholeQuadMode" in trunk.
I think it's reasonably low-risk to back-port
AMDGPU: Reduce the duration of whole-quad-mode
AMDGPU: Do not clobber SCC in SIWholeQuadMode
since they've been in trunk and hence the Padoka PPA for Ubuntu for several
months and I'm not aware of any bugs reported since then. Alternatively, we
could revert
AMDGPU: Fix an interaction between WQM and polygon stippling
to go back to how things were in 3.9 -- this re-introduces a low-impact bug,
but would fix this high-impact bug.</pre>
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