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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Add neon_cnt and neon_addv8 for 64-bit ARM for parity with MSVC"
href="https://bugs.llvm.org/show_bug.cgi?id=51488">51488</a>
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<th>Summary</th>
<td>Add neon_cnt and neon_addv8 for 64-bit ARM for parity with MSVC
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>12.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</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
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>fsb4000@yandex.ru
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Hello.
I started to work on popcount optimization on ARM64:
<a href="https://github.com/microsoft/STL/pull/2127">https://github.com/microsoft/STL/pull/2127</a>
and I found linking errors with clang-cl.
Could you provide neon_cnt and neon_addv8? (Also neon_cntq, neon_addvq8 for
future optimizing bitset:
<a href="https://github.com/microsoft/STL/issues/2129#issuecomment-899300269">https://github.com/microsoft/STL/issues/2129#issuecomment-899300269</a>)
```
__n64 neon_cnt(__n64);
__n128 neon_cntq(__n128);
__n8 neon_addv8(__n64);
__n8 neon_addvq8(__n128);
```
Or do you already provide similar intrinsics with different names?
I am slightly worried that they are not _Ugly.
So maybe I should ask Microsoft as well, maybe they should rename it if you
already have it with suitable names...
I used Windows 10 x86-64, Visual Studio 2022 Preview 3, Clang 12 from Visual
Studio.</pre>
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