<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/110693>110693</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [amdgpu] split sgpr regalloc pipeline caused perf degradation about 10% in buildbot Blender test
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
            yxsamliu
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          yxsamliu
      </td>
    </tr>
</table>

<pre>
    https://github.com/llvm/llvm-project/pull/93526 caused perf degradation in buildbot Blender test.

for example, the sky demo scene has about 10% kernel execution time increase.

```
2024-09-30 12:32:38,735a5f67,0.019419
2024-09-30 12:40:26,8e6bba23,0.019443
2024-09-30 12:48:22,18df9d23,0.019464
2024-09-30 12:57:20,5df7d88c,0.019439
2024-09-30 13:45:33,bfa8519b,0.019486
2024-09-30 13:57:00,be6a5dc9,0.01932
2024-09-30 14:05:10,06176293,0.019433
2024-09-30 14:38:16,ac0f64f0,0.02194
2024-09-30 14:46:29,9f6cd56d,0.021921
2024-09-30 15:05:01,93af9d6c,0.021789
2024-09-30 15:13:05,f9fbfc58,0.021948
2024-09-30 15:22:02,4ae0c505,0.021871
2024-09-30 15:30:14,01135de4,0.021882
2024-09-30 15:38:44,f2562229,0.021994
```

will post the dumped files for the good/bad cases.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJyUlN1u4yoUhZ-G3KBGsDHYXPgikyrvwc_G4QyxLYNn2rc_wmnSOafuxUgRUQgfe60NLJNzHEbEnsgfBOD9LZtbiisBIPL1YNZynZb-MXuwk3_vr6XMmYgTgQuByxDLdbVHN90IXFL69fh6mZfpH3SFwGVeUyJw0UKCos6sGT2dcQnU47AYb0qcRhpHateYvJ0K_ZFw9LjQgrkcCXsl7HQfw7RQfDO3OSGBMy1XpPnnO_V4m2h2OCK9mkyNndZCOSMg6U9cRkwU39CtW50Sb0jj6BY0Gf-zOVHs47P9BAbNC9MvglEORJzENnQEzq2QRgbVEjizI-O64XofaRgRJ1AEzh0qaw2IJ9KIb5CuIkDgzDsftP8DUc0-ItuKMAJn6UPru849EbEjTNQqsnqpW9tgOsm1fSKd2ke2KqxWsaiM9E4_EAFfiaYurkXqKZyZ4q0C_WlF7Lhv7u0VJ14bZhwLqgnsjgDXO-Yr0ahqvmrRQTkvlX8SwL8i8qGL8YoIE7RX7oG03U6_NhfizsE56GCDk92nrm4fgXo0rB5kY5A5udEb0rXfCBP1uvCmruNcSI_NE-l2eiwfDWvqugBSAYB-Cnt07H_X-j7-jinRecple0N-vc3oaYgJM61vrE4O0-QJXKzx1JmM-XjwvfBaaHPAnrfQtrrrWn249si4sJYL7xoA3TprRb26aGwwXlt5iH3VzRnjXLFW6mNnDQteGW6lAy49aRjeTEzHmhzHaRkOMecVe86Z0uKQjMWUPyJqxN90-_cjo5Z-ixu7Dpk0LMVc8uc2JZa0ZZu5-WFeiXyleU6x0DzMC11wMClNjs5xxhRH_Dad_oyU75LqsC7p78Nxs5IJXD68_urh3wAAAP__VMB9Dw">