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    <head>
      <base href="https://llvm.org/bugs/" />
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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 --- - Non-affine region scalar read uses original value"
   href="https://llvm.org/bugs/show_bug.cgi?id=25439">25439</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Non-affine region scalar read uses original value
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Projects
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Polly
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>polly-dev@googlegroups.com
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>doerfert@cs.uni-saarland.de
          </td>
        </tr>

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=15238" name="attach_15238" title="Testcase">attachment 15238</a> <a href="attachment.cgi?id=15238&action=edit" title="Testcase">[details]</a></span>
Testcase

Instead of a new value the copy of the scalar %cmp in the non-affine region
uses the original PHI node %height.lcsssa. __Later__ the PHI node is copied and
assumed to escape as there is a user not in the region (namely the copied
%cmp). The problem seems to be a missing scalar access in the non-affine region
or at least a mapping that would use a reloaded value not the original PHI.</pre>
        </div>
      </p>
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