<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/155812>155812</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang] VectorExprEvaluator::VisitCallExpr - add MMX/SSE/AVX2 PSIGN intrinsics to be used in constexpr
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            good first issue,
            backend:X86,
            clang:frontend,
            clang:headers,
            constexpr,
            clang:bytecode
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          RKSimon
      </td>
    </tr>
</table>

<pre>
    Similar to #152524 - add handling for __builtin_ia32_psignd to VectorExprEvaluator::VisitCallExpr and InterBuiltin.cpp
```
_mm_sign_pi8 _mm_sign_epi8  _mm256_sign_epi8
_mm_sign_pi16 _mm_sign_epi16 _mm256_sign_epi16
_mm_sign_pi32 _mm_sign_epi32 _mm256_sign_epi32
```
</pre>
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