<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/58413>58413</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            DW_OP_GNU_entry_value and DW_OP_entry_value emitted even with options that should prevent it
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          john-brawn-arm
      </td>
    </tr>
</table>

<pre>
    DW_OP_entry_value is a DWARF expression that was added in DWARF 5, and DW_OP_GNU_entry_value is a GNU extension that behaves the same. When compiling with `-gdwarf-4` clang should not emit DW_OP_entry_value but is allowed to use DW_OP_GNU_value, and when using `-gdwarf-4 -gstrict-dwarf` it should emit neither.

An example where we do this:
```
int a, b;
void c();
void d(void *) {
  c();
  b = a;
}
```
When compiled with `-O1 -gdwarf4 -gstrict-dwarf` (with either `--target=aarch64` or `--target=amd64`) the .debug_loc section contains DW_OP_GNU_entry_value. Additionally using `-glldb` we get DW_OP_entry_value. I _think_ what we should be doing instead is just not emitting a location expression for the address range that's covered by the DW_OP_GNU_entry_value/DW_OP_entry_value.
</pre>
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