<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/113597>113597</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [SPIRV][HLSL] Handle lowering of vectors larger than 4 when targeting spirv
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            HLSL,
            backend:SPIR-V
      </td>
    </tr>

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

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

<pre>
    In https://github.com/llvm/llvm-project/pull/109331 we generate vectors with size larger than 4. This is an issue when targeting SPIR-V, which native vector size is limited to 4. This will be a recurrent issue when adding Matrix support.  There needs to be some pass that can break up vectors and vector operations to fit into the max-4-compponent constraint.  Currently, in https://github.com/llvm/llvm-project/pull/109331, the generated code handles such constraints in `CGBuiltin.cpp` when expanding the clang builtin for initial IR codegen.
</pre>
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