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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Infinite loop in AlwaysInliner pass"
href="http://llvm.org/bugs/show_bug.cgi?id=18955">18955</a>
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<th>Summary</th>
<td>Infinite loop in AlwaysInliner pass
</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>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>Interprocedural Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>anthony.louis.eden@gmail.com
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Attached is a tarball of two LLVM code modules which are nearly identical. When
running
opt -O2 -o bad.bc bad.ll
opt rapidly consumes GiB's of memory and seems to run indefinitely (>10min).
When running
opt -O2 -o good.bc good.ll
opt exits quickly. The difference between the two modules is 599 removals of
the alwaysinline function attribute; therefore I believe the problem is in the
AlwaysInliner pass. I also wrote code to only run the AlwaysInliner pass, and
that produced the same result.
I have also experimentally observed this bug in the LLVM 3.4 and LLVM 3.0
releases.</pre>
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</p>
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