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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 - temp_comp_access::get_required_live_range: enclosing_scope_first_write is NULL"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=109064">109064</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>temp_comp_access::get_required_live_range: enclosing_scope_first_write is NULL
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>18.3
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </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>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/r600
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>alex_y_xu@yahoo.ca
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=142814" name="attach_142814" title="FS_bb6bfb3018b248ae9b31f50f6cc3c1401308f621.glsl">attachment 142814</a> <a href="attachment.cgi?id=142814&action=edit" title="FS_bb6bfb3018b248ae9b31f50f6cc3c1401308f621.glsl">[details]</a></span>
FS_bb6bfb3018b248ae9b31f50f6cc3c1401308f621.glsl

When loading a game in The Witcher 3, the game crashes.

#0  (anonymous namespace)::temp_comp_access::get_required_live_range
(this=0x7f8f6d259928) at
../mesa-18.3.1/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp:936
        keep_for_full_loop = true
        enclosing_scope = 0x7f8ff7beb0c0
        enclosing_scope_first_read = 0x7f8ff7beb0c0
        enclosing_scope_first_write = <optimized out>
        conditional = <optimized out>
        keep_for_full_loop = <optimized out>
        enclosing_scope_first_read = <optimized out>
        enclosing_scope_first_write = <optimized out>
        conditional = <optimized out>
        enclosing_scope = <optimized out>

I used MESA_SHADER_DUMP_PATH to dump the shaders, and attached the last one in
chronological order (I assume this is probably the one that crashed).</pre>
        </div>
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