<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/98741>98741</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [AMDGPU] `LiveIntervals` is inaccurate after `TwoAddressInstructionPass`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            backend:AMDGPU
      </td>
    </tr>

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

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

<pre>
    There are some test failures in pull request #98632 when `LiveIntervals` analysis happens before `TwoAddressInstructionPass`, because `SIInstrInfo::convertToThreeAddress` doesn't handle live intervals after folding immediate values:
https://github.com/llvm/llvm-project/blob/ae63db78828621feca713016e33f34717da626a5/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp#L3949-L3961
The live interval of `DefReg` is no longer valid.
</pre>
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