<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/58312>58312</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            "llc" crashes when given file that attempts to use global pinned register
        </td>
    </tr>

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

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

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

<pre>
    I was experimenting with using pinned global registers, and the file I generated happened to trigger a crash in LLVM. It also prompted me to write a bug report, which is what I'm doing right now.


File that triggers this crash:
```
; file: "global-register.ll"

define dso_local i64 @value_rbx() {
  %value = call i64 @llvm.read_register.i64(metadata !"rbx")
  ret i64 %value
}

declare i64 @llvm.read_register.i64(metadata) #0

attributes #0 = { nounwind readonly }
```
</pre>
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