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      <base href="https://bugs.llvm.org/">
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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 - [AMDGPU][Regression,bisected] Recent Load/Store optimizer improvements break SI"
   href="https://bugs.llvm.org/show_bug.cgi?id=40129">40129</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[AMDGPU][Regression,bisected] Recent Load/Store optimizer improvements break SI
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </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>release blocker
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>samuel.pitoiset@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi,

The following commit introduces a bunch of Vulkan CTS failures (~1600) on SI.
Tested with RADV.

If you want to reproduce the problem, you can run
dEQP-VK.clipping.user_defined.clip_cull_distance.vert_tess_geom.1_7 or
dEQP-VK.image.image_size.1d.readonly_1 for example.

Note that a bunch of vec3 CTS tests fail too, maybe it's an alignment issue
that is SI-specific?

4778d2ba9306039e888628874cf5a6c32e6bc004 is the first bad commit
commit 4778d2ba9306039e888628874cf5a6c32e6bc004
Author: Neil Henning <<a href="mailto:neil.henning@amd.com">neil.henning@amd.com</a>>
Date:   Wed Dec 12 16:15:21 2018 +0000

    [AMDGPU] Extend the SI Load/Store optimizer to combine more things.

    I've extended the load/store optimizer to be able to produce dwordx3
    loads and stores, This change allows many more load/stores to be combined,
    and results in much more optimal code for our hardware.

    Differential Revision: <a href="https://reviews.llvm.org/D54042">https://reviews.llvm.org/D54042</a>

    git-svn-id: <a href="https://llvm.org/svn/llvm-project/llvm/trunk@348937">https://llvm.org/svn/llvm-project/llvm/trunk@348937</a>
91177308-0d34-0410-b5e6-96231b3b80d8</pre>
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      </p>


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