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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - GVN incorrectly forwards a load across a clobbering store."
href="https://llvm.org/bugs/show_bug.cgi?id=31761">31761</a>
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<th>Summary</th>
<td>GVN incorrectly forwards a load across a clobbering store.
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>3.9
</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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>mehdi.amini@apple.com
</td>
</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>Created <span class=""><a href="attachment.cgi?id=17896" name="attach_17896" title="GVN Bug">attachment 17896</a> <a href="attachment.cgi?id=17896&action=edit" title="GVN Bug">[details]</a></span>
GVN Bug
See attached IR. This is a single-block sequence of:
%0 = Load ptr ; original load
store null, ptr ; clobber...
%1 = load ptr ; reload
The original value is forwarded to the user of the reload.
Reproduces on trunk with opt -gvn repro.ll</pre>
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