<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/56384>56384</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Backend-Pass can't run on SPEC2006 benchmark
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          Xuefeng-2000
      </td>
    </tr>
</table>

<pre>
    I write a backend-Pass like this.
`   class ARMAddHeaderPass : public ModulePass{
...
virtual bool runOnModule(Module &M) {
...
}
`

it can run correctly on simple tests like quick sort. but when I compile SPEC2006 to bitcode and use llc to convert it to a object file，
</pre>
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