<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - Nary Reassociate pass takes too long on simple programs"
   href="https://llvm.org/bugs/show_bug.cgi?id=30257">30257</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Nary Reassociate pass takes too long on simple programs
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </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>Scalar Optimizations
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>tstellar@gmail.com
          </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=17209" name="attach_17209" title="Reduced Tetst Case">attachment 17209</a> <a href="attachment.cgi?id=17209&action=edit" title="Reduced Tetst Case">[details]</a></span>
Reduced Tetst Case

The reduced tests cases is from the same larger test case as
<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - SLSR pass takes too long on simple programs"
   href="show_bug.cgi?id=28721">https://llvm.org/bugs/show_bug.cgi?id=28721</a>.  I suspect they have the same root
cause.

To reproduce:
opt -nary-reassociate -mtriple=amdgcn--amdhsa -mcpu=fiji -debug-pass=Executions
 nary-reassociate-long-compile.ll -o - -S</pre>
        </div>
      </p>
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