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    <body><span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [Regression] Quadratic module build time due to Preprocessor::LeaveSubmodule"
   href="https://llvm.org/bugs/show_bug.cgi?id=24667">bug 24667</a>
        <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>RESOLVED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>richard-llvm@metafoo.co.uk
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           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>FIXED
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [Regression] Quadratic module build time due to Preprocessor::LeaveSubmodule"
   href="https://llvm.org/bugs/show_bug.cgi?id=24667#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [Regression] Quadratic module build time due to Preprocessor::LeaveSubmodule"
   href="https://llvm.org/bugs/show_bug.cgi?id=24667">bug 24667</a>
              from <span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span></b>
        <pre>Fixed in r261705. With a debug build of trunk, the growth is linear:

128     0.0411779880524
256     0.0555319786072
512     0.0881149768829
1024    0.143043041229
2048    0.268987894058
4096    0.542062044144
8192    1.02460289001</pre>
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