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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - refactor metadata propagation for consistency and completeness"
href="https://llvm.org/bugs/show_bug.cgi?id=31518">31518</a>
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<th>Summary</th>
<td>refactor metadata propagation for consistency and completeness
</td>
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<th>Product</th>
<td>libraries
</td>
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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
</td>
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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
</td>
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<th>Component</th>
<td>Transformation Utilities
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>spatel+llvm@rotateright.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>As Davide noted in the post-commit thread for r290844:
<a href="http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170102/416121.html">http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170102/416121.html</a>
...we have many implementations/variations for propagating metadata in
individual passes. Some of these may require different behavior, but there must
be some functionality that can be shared amongst:
GVN::patchReplacementInstruction()
GVNHoist::combineKnownMetadata()
SimplifyCFG::HoistThenElseCodeToIf()
BBVectorize::fuseChosenPairs()
VectorUtils:propagateMetadata()
We have Local.cpp -> llvm::combineMetadataForCSE(). Can it be used in these
cases?</pre>
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