<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/114131>114131</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Invalid type description generated in DXIL IR for StructuredBuffer
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            bug,
            HLSL
      </td>
    </tr>

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

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

<pre>
    An invalid form of a type was being generated in the DXIL IR for the StructuredBuffer type.  This form was causing 'opt' to fail with a syntax error while parsing the IR.

godbolt: https://godbolt.org/z/zf7TTWa5q

Shader compiled with -T cs_6_6
```
struct mystruct
{
    float4 Color;
};

StructuredBuffer<mystruct> my_buffer : register(t2, space4);

export float4 test()
{
    return my_buffer[0].Color;
}

[numthreads(1,1,1)]
void main() {}
```

See `%"class.hlsl::StructuredBuffer" = type { target("dx.RawBuffer", %struct.mystruct = type { <4 x float> }, 0, 0), %struct.mystruct }`

Type section for IR
```
%"class.hlsl::StructuredBuffer" = type { target("dx.RawBuffer", %struct.mystruct = type { <4 x float> }, 0, 0), %struct.mystruct }
%struct.mystruct = type { <4 x float> }
%dx.types.Handle = type { ptr }
%dx.types.ResBind = type { i32, i32, i32, i8 }
%dx.types.ResourceProperties = type { i32, i32 }
```

The part "%struct.mystruct = type" is causing the parsing error.

</pre>
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