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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - aarch64: Cannot select v8i8 = cttz"
href="https://bugs.llvm.org/show_bug.cgi?id=39729">39729</a>
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<th>Summary</th>
<td>aarch64: Cannot select v8i8 = cttz
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</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>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>danielwatson311@gmail.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>aarch64 llvm.cttz.v8i8 gets this error:
LLVM ERROR: Cannot select: 0x5642a6b49e70: v8i8 = cttz 0x5642a6b49c68
0x5642a6b49c68: v8i8,ch = CopyFromReg 0x5642a6ae17c8, Register:v8i8 %0
0x5642a6b49c00: v8i8 = Register %0
build with -march=aarch64
<a href="https://godbolt.org/z/kKAPMl">https://godbolt.org/z/kKAPMl</a>
llvm: 8.0.0svn</pre>
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