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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - neon: vmovn_high_* missing on Arm"
href="https://bugs.llvm.org/show_bug.cgi?id=48194">48194</a>
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<th>Summary</th>
<td>neon: vmovn_high_* missing on Arm
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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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>clang@evan.coeusgroup.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
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<pre>According to Arm's documentation, vmovn_high_* are should be present on arm,
not just aarch64. See:
<a href="https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics?search=vmovn_high">https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics?search=vmovn_high</a>
While clang support them on AArch64, they're missing on arm. Example:
<a href="https://godbolt.org/z/7TE9G3">https://godbolt.org/z/7TE9G3</a>
I'm working around it by using something like (for vmovn_high_s16)
vcombine_s8(r, vmovn_s16(a)).
FWIW they're missing on gcc, too.</pre>
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