<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/145286>145286</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [GitHub] Add description to llvm::instcombine label to cover instsimplify / vectorcombine as well
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            question,
            llvm:instcombine,
            github:workflow
      </td>
    </tr>

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

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

<pre>
    CC @nikic @dtcxzyw 

As explained here: https://llvm.org/docs/InstCombineContributorGuide.html#pick-the-correct-optimization-pass

Would it be OK to use the github label llvm::InstCombine to refer to the sibling passes as well:

```
    InstructionSimplify: For folds that do not create new instructions (either fold to existing value or constant).
 InstCombine: For folds that create or modify instructions.
 AggressiveInstCombine: For folds that are expensive, or violate InstCombine requirements.
    VectorCombine: For folds of vector operations that require target-dependent cost-modelling.
```

or would you prefer they all have separate labels?

The doc also refers to:

```
    ConstantFolding: For folding instructions with constant arguments to a constant. (Mainly relevant for intrinsics.)
    ValueTracking: For analyzing instructions, e.g. for known bits, non-zero, etc. Tests should usually use -passes=instsimplify.
```

But these probably should use the llvm::analysis label?
</pre>
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