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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 --- - multiple piglit builtin-short* and builtin-ushort tests fails"
   href="https://llvm.org/bugs/show_bug.cgi?id=28915">28915</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>multiple piglit builtin-short* and builtin-ushort tests fails
          </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>Keywords</th>
          <td>regression
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Backend: AMDGPU
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>pavel.ondracka@email.cz
          </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>Some failing tests:
builtin-char-upsample-1.0.generated
builtin-short-abs-1.0.generated
builtin-short-abs_diff-1.0.generated
builtin-short-add_sat-1.0.generated
builtin-short-clamp-1.1.generated
builtin-short-clz-1.0.generated
builtin-short-hadd-1.0.generated
builtin-ushort-abs-1.0.generated
and more

>From the tests its always just the 4, 8 and 16 subtests that fails, the 1 and 2
subtests pass.

The regression happened roughly between the beginning of May and end of July,
however since there was some long-time build breakage between llvm/clang and
libclc in the meantime I'm unable to bisect.

System:
GPU: 06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Caicos XTX [Radeon HD 8490 / R5 235X OEM]
llvm: 5a9fa77faf0b8794428b3072b28b7f15d898d52a
libclc: 8243e979a42c48c6b018995d35e8a371014b59da
mesa: 8c4d9afb7e770f312079994994f42ddebf7e641c</pre>
        </div>
      </p>
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