<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [debugify] reassociate fail"
   href="https://bugs.llvm.org/show_bug.cgi?id=38163">38163</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[debugify] reassociate fail
          </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>Windows NT
          </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>greg.bedwell@sony.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Blocks</th>
          <td>37953
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=20556" name="attach_20556" title="ll reproducer">attachment 20556</a> <a href="attachment.cgi?id=20556&action=edit" title="ll reproducer">[details]</a></span>
ll reproducer

$ clang -v
clang version 7.0.0 (trunk 337000) (llvm/trunk 337003)
Target: x86_64-scei-ps4
Thread model: posix
InstalledDir: e:\work\upstream-llvm\build-vs2015-ps4-ninja\bin

$ cat Debugifind.1.FAIL.Reassociate_expressions.cpp
void foo(int& bar, int baz) {
    bar += baz - baz;
}

$ clang.exe Debugifind.1.FAIL.Reassociate_expressions.cpp -S -o - -emit-llvm
-O0 -Xclang -disable-O0-optnone -o Debugifind.1.FAIL.Reassociate_expressions.ll

$ opt.exe -disable-output -debugify-each -reassociate
Debugifind.1.FAIL.Reassociate_expressions.ll
ERROR: Instruction with empty DebugLoc in function _Z3fooRii --  %.neg = sub
i32 0, %1
CheckFunctionDebugify [Reassociate expressions]: FAIL
CheckFunctionDebugify [Module Verifier]: PASS</pre>
        </div>
      </p>

        <div id="referenced">
          <hr style="border: 1px dashed #969696">
          <b>Referenced Bugs:</b>
          <ul>
              <li>
                [<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [meta] [debugify] fix -check-debugify failures"
   href="https://bugs.llvm.org/show_bug.cgi?id=37953">Bug 37953</a>] [meta] [debugify] fix -check-debugify failures
              </li>
          </ul>
        </div>
        <br>

      <hr>
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      <ul>
          <li>You are on the CC list for the bug.</li>
      </ul>
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