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    <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 - Pattern matching based optimizations produce wrong results"
   href="https://bugs.llvm.org/show_bug.cgi?id=32500">32500</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Pattern matching based optimizations produce wrong results
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Polly
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Optimizer
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>phschaad@student.ethz.ch
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>gareevroman@gmail.com, llvm-bugs@lists.llvm.org, tobias@grosser.es
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Compiling the Polybench/C 4.2.1 beta kernels gemm/2mm/3mm with [-O3 -mllvm
-polly] makes them return wrong results. Disabling pattern matching based
optimizations [-O3 -mllvm -polly -mllvm
-polly-pattern-matching-based-opts=false] fixes that issue.</pre>
        </div>
      </p>


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