<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/56681>56681</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [TTI] crash as target TTI doen't take active
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

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

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

<pre>
    opt --loop-data-prefetch --prefetch-distance=3000 for case, see detail https://gcc.godbolt.org/z/fo699r385
```
define void @calc() {
entry:
  ret void
}
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJxdUcuO3CAQ_Bq4IFsML8OBw25GkXLfH8DQttmwZgR4pM3Xh3F2FGmlRnQVreqie87h0-ZbI8OQcr4NwTU33Aos0PzWyWc6hFib2z0gfuWUUrLkQryrgNgPUgFIgOZiIltrt4r4C2I_e6zej2sOc05tzGXtzJ9-lqyMKVxLRK-IviBFv-KEAZa4A7nnGAgS1LvkEdOIGYKm138lsLfy-WhyIkIKtLP-S2-6fhPGYC9KaimENBMOlgfDjcMttgQWyde3t19IXokvrm7EVdJcWbtkp0nIsCM2tc79BuJ8i3fAR0n220dj24559Pmjg5Tuz6vPL7-Dbx3GWg-oPZFK6QveLOdzEIpzo5nSXhhBJV28nuisxeXiAk5uhlQfBrs7HC2jjNGJccqEkWrsW_A6eKUUTEFo04cFH30H46PxY9y42NPDfKy1P6a-wfr_0dUa1x3gqe-OtuVi70tYFnyatafTv8OnpLA">