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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash in SLP Vectorizer"
href="https://bugs.llvm.org/show_bug.cgi?id=44954">44954</a>
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<th>Summary</th>
<td>Crash in SLP Vectorizer
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>unspecified
</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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>clang@evan.coeusgroup.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23139" name="attach_23139" title="clang output, including backtrace">attachment 23139</a> <a href="attachment.cgi?id=23139&action=edit" title="clang output, including backtrace">[details]</a></span>
clang output, including backtrace
When attempting to compile libaom with emscripten using SIMDe
(<<a href="https://github.com/nemequ/simde/">https://github.com/nemequ/simde/</a>>), the compiler crashes in the SLP
Vectorizer. I managed to reduce the test case to a manageable size, and after
reporting it to emscripten
(<<a href="https://github.com/emscripten-core/emscripten/issues/10425">https://github.com/emscripten-core/emscripten/issues/10425</a>>) they said the
bug appears to not to be specific to emscripten and should be reported to LLVM,
so here it is.
You can find the non-preprocessed test case as well as details on how to
reproduce in emscripten (basically, -O2 -s SIMD=1) on the emscripten bug
report, which may be helpful; it's pretty small, and only pulls in stddef.h,
stdint.h, and string.h.
I'll attach the preprocessed source and script generated by clang, as well as
the full clang output (including the backtrace).
Please let me know if you need any additional information.</pre>
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