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      <base href="https://bugs.llvm.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - llc -O0 generates incorrect debug information when compiling IR containing llvm.dbg.value"
   href="https://bugs.llvm.org/show_bug.cgi?id=51463">51463</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>llc -O0 generates incorrect debug information when compiling IR containing llvm.dbg.value
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dwight.guth@runtimeverification.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=25128" name="attach_25128" title="minimized llvm IR">attachment 25128</a> <a href="attachment.cgi?id=25128&action=edit" title="minimized llvm IR">[details]</a></span>
minimized llvm IR

If you take the attached LLVM IR containing debug information and try to
compile it into an executable using `llc -O0`, GDB (tested using version 9.2)
will not be able to report the value of `x` if you are stopped at a breakpoint
on the `foo` function. This seems to have worked as recently as llvm 11. This
is on an AMD64 machine. I can reproduce this on the main branch of llvm.</pre>
        </div>
      </p>


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