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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Big shuffle crashes X86 backend"
href="https://bugs.llvm.org/show_bug.cgi?id=47534">47534</a>
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<th>Summary</th>
<td>Big shuffle crashes X86 backend
</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>All
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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>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>benny.kra@gmail.com
</td>
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<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23964" name="attach_23964" title="reduced test case">attachment 23964</a> <a href="attachment.cgi?id=23964&action=edit" title="reduced test case">[details]</a></span>
reduced test case
$ llc < bugpoint-reduced-simplified.ll -mcpu=skylake-avx512
llc: llvm/lib/Target/X86/X86ISelLowering.cpp:10987: unsigned int
getV4X86ShuffleImm(ArrayRef<int>): Assertion `Mask[1] >= -1 && Mask[1] < 4 &&
"Out of bound mask element!"' failed.</pre>
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