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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - MemorySSA crashing with Assertion `!MSSA.isLiveOnEntryDef(MA) && "Hit liveOnEntry before clobber?"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=45976">45976</a>
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<th>Summary</th>
<td>MemorySSA crashing with Assertion `!MSSA.isLiveOnEntryDef(MA) && "Hit liveOnEntry before clobber?"' failed.
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<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>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Global Analyses
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>mikael.holmen@ericsson.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23503" name="attach_23503" title="bbi-42991.ll reproducer">attachment 23503</a> <a href="attachment.cgi?id=23503&action=edit" title="bbi-42991.ll reproducer">[details]</a></span>
bbi-42991.ll reproducer
llvm commit: 87b235db63a3
If I compile with EXPENSIVE_CHECKS turned on and then run
opt -S -o - bbi-42991.ll -early-cse-memssa
I hit the following assertion:
opt: ../lib/Analysis/MemorySSA.cpp:447: void checkClobberSanity(const
llvm::MemoryAccess *, llvm::MemoryAccess *, const llvm::MemoryLocation &, const
llvm::MemorySSA &, const (anonymous namespace)::UpwardsMemoryQuery &,
AliasAnalysisType &, bool) [AliasAnalysisType = llvm::AAResults]: Assertion
`!MSSA.isLiveOnEntryDef(MA) && "Hit liveOnEntry before clobber?"' failed.</pre>
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