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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - NewGVN is likely screwing up in the presence of lifetime.start and end"
href="https://llvm.org/bugs/show_bug.cgi?id=31511">31511</a>
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<th>Summary</th>
<td>NewGVN is likely screwing up in the presence of lifetime.start and end
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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>Scalar Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>dberlin@dberlin.org
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>MemorySSA is smart enough to understand that lifetime.start and lifetime.end
don't actually alias anything.
However, this means when we make replacements of loads with stores, etc, we
probably have situations where we are extending the life part the
lifetime.start or end on either side.
I'll work up some testcases and test them</pre>
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