<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/87523>87523</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            -fno-unsafe-math-optimizations enables constrained intrinsics
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    I expected -fno-unsafe-math-optimizations would be the default behavior and only undo -funsafe-math-optimizations. Instead it enables constrained intrinsics. https://godbolt.org/z/ooYdY4Kox

I checked with @andykaylor who thought this behavior might be because gcc documentation says -fno-unsafe-math-optimizations implies -ftrapping-math. gcc has -ftrapping-math by default, but clang does not.
</pre>
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