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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Debug info not maintained in AutoFDO"
href="https://llvm.org/bugs/show_bug.cgi?id=25482">25482</a>
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<th>Summary</th>
<td>Debug info not maintained in AutoFDO
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>DebugInfo
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
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<th>Reporter</th>
<td>danielcdh@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>If -fprofile-sample-use is specified, clang will set
CodeGenOptions::LocTrackingOnly and make the FE emit debug info. However, as
the debug info is not emitted in the final binary, there are several issues
that prevents the debug info from being updated correctly:
* The discriminator will not be applied due to !hasDebugInfo(F) check
* Inline stack is not maintained during function inlining
In general, we need frontend to pass down a parameter to let backend
optimization know that debug info still needs to be maintained.</pre>
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