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      <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 --- - [Feature] Use builtin __make_integer_seq to implement std::make_integer_sequence when supported"
   href="https://llvm.org/bugs/show_bug.cgi?id=25646">25646</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Feature] Use builtin __make_integer_seq to implement std::make_integer_sequence when supported
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.7
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>All
          </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>All Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>ldionne.2@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=15355" name="attach_15355" title="Patch">attachment 15355</a> <a href="attachment.cgi?id=15355&action=edit" title="Patch">[details]</a></span>
Patch

Clang's R252036 added a builtin __make_integer_seq to create large integer
sequences quickly. libc++ should use this builtin whenever possible. The
attached patch passes all of libc++'s unit tests on my machine.</pre>
        </div>
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