<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/60752>60752</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang generates wrong code for very large alignment
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          efriedma-quic
      </td>
    </tr>
</table>

<pre>
    Testcase:

```
int a[1LL<<32] __attribute((aligned(1ULL<<32))) = {};
```

Currently generates `@a = dso_local global [4294967296 x i32] zeroinitializer, align 16`, somehow discarding the alignment.

See also discussion at https://reviews.llvm.org/D142584#inline-1386122 ; apparently we're truncating an integer at https://github.com/llvm/llvm-project/blob/main/clang/utils/TableGen/ClangAttrEmitter.cpp#L532 .
</pre>
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