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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - CSSPGO support in LLVM isn't complete"
href="https://bugs.llvm.org/show_bug.cgi?id=49011">49011</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>CSSPGO support in LLVM isn't complete
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>11.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>wenlei@fb.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Blocks</th>
<td>48902
</td>
</tr></table>
<p>
<div>
<pre>We’ve been working on bringing up context-sensitive sample PGO
(<a href="https://lists.llvm.org/pipermail/llvm-dev/2020-August/144101.html">https://lists.llvm.org/pipermail/llvm-dev/2020-August/144101.html</a>) in LLVM
since last year. With the cut point for 12 release, clang-12 will have
incomplete (~90%) CSSPGO that is buggy.
Porting over the following patches will enable 12 release to have complete
CSSPGO support. The patches should be very low risk and have zero impact on
mainstream stability as it’s purely new functionality.
<a href="https://reviews.llvm.org/rG7e99bddfeaab2713a8bb6ca538da25b66e6efc59">https://reviews.llvm.org/rG7e99bddfeaab2713a8bb6ca538da25b66e6efc59</a>
<a href="https://reviews.llvm.org/rG224fee8219bb3aed34f13ce40935e1b3ede90a0f">https://reviews.llvm.org/rG224fee8219bb3aed34f13ce40935e1b3ede90a0f</a>
<a href="https://reviews.llvm.org/rGd3e2e3740d0730cb6788c771bb01a8f3e935bf2e">https://reviews.llvm.org/rGd3e2e3740d0730cb6788c771bb01a8f3e935bf2e</a>
<a href="https://reviews.llvm.org/rG3d89b3cbec230633e8228787819b15116c1a1730">https://reviews.llvm.org/rG3d89b3cbec230633e8228787819b15116c1a1730</a>
<a href="https://reviews.llvm.org/rG6bae5973c476e16dbbc82030d65c7859a6628e89">https://reviews.llvm.org/rG6bae5973c476e16dbbc82030d65c7859a6628e89</a>
<a href="https://reviews.llvm.org/rG1645f465be85223e9f5b6303a3e5e0e491fd819f">https://reviews.llvm.org/rG1645f465be85223e9f5b6303a3e5e0e491fd819f</a>
The last few patches in this stack <a href="https://reviews.llvm.org/D92998">https://reviews.llvm.org/D92998</a> (expect to
be pushed to trunk in the next few days)</pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - [meta] 12.0.0 Release Blockers"
href="https://bugs.llvm.org/show_bug.cgi?id=48902">Bug 48902</a>] [meta] 12.0.0 Release Blockers
</li>
</ul>
</div>
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