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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Alias handles case of "0+pointertoint" incorrect"
href="http://llvm.org/bugs/show_bug.cgi?id=18813">18813</a>
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<th>Summary</th>
<td>Alias handles case of "0+pointertoint" incorrect
</td>
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<th>Product</th>
<td>tools
</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>Linux
</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>opt
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>ili.filippov@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>This issue is reproducible with LLVM trunk.
The reproducer is attached.
Command to reproduce: opt reproducer_load.ll -dse -basicaa > temp.bc
Optimizer deletes first "store" instruction (dead store elimination stage)
although it is needed for subsequent "load" instruction. It seems that it is an
alias problem. Alias analysis doesn't understand that "a" and "ptr" locations
are the same.</pre>
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