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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - r241927 caused some minor regressions on x86" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24085&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=0H-QpfVXQ5ZpiOU0nr7q1bq-FaX2AI6JuHkOFXGB1YE&s=Z_5O-Se7Q9IQ7z3JGVRXCLDnR17Aa8y89nz69MfCvlw&e=">24085</a>
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<th>Summary</th>
<td>r241927 caused some minor regressions on x86
</td>
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<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>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>escha@apple.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>This improvement to computeKnownBits allowed SelectionDAG to shrink some
constants more than before, which caused some minor regressions on x86 (see the
changes to tests in the commit). As in the Phabricator review of that patch,
this is a suboptimality in the x86 backend (presumably).</pre>
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</p>
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