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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - neon: vqshl scalar functions use wrong type for b parameter"
href="https://bugs.llvm.org/show_bug.cgi?id=48114">48114</a>
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<th>Summary</th>
<td>neon: vqshl scalar functions use wrong type for b parameter
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>11.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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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>
<div>
<pre>According to Arm's documentation
(<<a href="https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics">https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics</a>>),
the second parameter should be signed for the following functions:
vqshlb_u8
vqshlh_u16
vqshls_u32
vqshld_u64
However, clang-11 uses unsigned values.
The vector versions are signed (e.g., vqshl_u8 uses int8x8_t not uint8x8_t),
and passing negative values is completely sensible.
GCC also has the same problem, I'll file a bug there soon. I don't currently
have access to armcc.</pre>
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