<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/64493>64493</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [mlir] incomplete support in the `gpu-to-llvm` lowering
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          Colloportus0
      </td>
    </tr>
</table>

<pre>
    MLIR built at commit  1d9f77f5
Reproduced with:  
`mlir-opt --gpu-to-llvm temp.mlir`

temp.mlir:
``` milr 
module {
  func.func @func1(){
    %c1 = arith.constant 1 : index
    %alloc_6 = memref.alloc() : memref<2x3xf32>
 memref.alloca_scope  {
      %41 = memref.generic_atomic_rmw %alloc_6[%c1, %c1] : memref<2x3xf32> {
      ^bb0(%arg0: f32):
 memref.atomic_yield %arg0 : f32
      }
    }
    return
 }
}

```
 
```console
temp.mlir:6:13: error: 'llvm.cmpxchg' op operand #1 must be integer or LLVM pointer type, but got 'f32'
 %41 = memref.generic_atomic_rmw %alloc_6[%c1, %c1] : memref<2x3xf32> {
 ^
temp.mlir:6:13: note: see current operation: %26 = "llvm.cmpxchg"(%23, %25, %25) <{failure_ordering = 2 : i64, success_ordering = 6 : i64}> : (!llvm.ptr, f32, f32) -> !llvm.struct<(f32, i1)>
``` 
              Here is the fix for the main issue here https://reviews.llvm.org/D145901, but it won't fix the lowering completely, because cmpxchg does not accept floats. @ftynse, is there any workaround to make it work? I found this related discussion https://lists.llvm.org/pipermail/llvm-dev/2020-August/144314.html

_Originally posted by @pifon2a in https://github.com/llvm/llvm-project/issues/59182#issuecomment-1465648577_
 
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy8VU2P4jgT_jXmUgIlTpyQAwemafSO1KNXmsNekXEqwduOHfmjaf79yk5gQo92D3tYhPJRfqrqqarHMXdO9hpxR9g3wg4rHvzF2N2LUcqMxvrgstXZtLfdj7fvP-EcpPLAPQgzDNID5G3T1XXHSHYg2f4njta0QWALV-kvpNgDTCukygYl7dqMHtbrfgxrb9ZKfQzgcRg3cY1U2YxN11_2Yv-IMf1hkMrOgQfTBoVA6m_TO0AXtNjEC5Ayi_ec0C2hzQICQCgTOZDiANxKf9kIo53n2kM07kHqFj-f0FwpI05VchlwsNhtkmmKnZwmMyle6Gfx2RWUFK9ziKUDPzlhRgR44pNylPkyfI8arRQn7s0gxckO1wWPOK1YAqEvUy2EHf6OxG-Z2Ov5nCXijNs-i24RSZtHqx-Mp9w3iaqFGQ53_DJkfVh0a_li0Qer5_fHyq-H58necc_WOByj8HddVKTY50Xkg9aaaAFC6yirjRjGT3HpCa3BjGBGtFzHEoochuA8nBGk9tijBWPh7e2PHzCaaLHgbyPGvp6Dh974GDK1p76z-y8mRdjrP9Wrjcd4d4gggrWo_VSkl0ZPfWB0Uiuh9LkjdBo9LWZKlC0eopRfSP2t41IFiydjW7RS9ykUnTZHVUYHF4RA554R1QNRH1JBicqW0DxxGL2Nrqmd862BdQLOCOdtED5yoNsZJvMkzdevX4GlAO-__6FFkA78BaGTn9AZm54HLjVI5wLCJUIu3o8uyp0eCT1a_JB4dZvEwNie0OMhL1mT5XcdSA9XowmtfQobQypzneoWZhgVelS3hEbBg0OY2w2tQRfHBVwIHD10ynDvNunj5G_aJalNjC0C1ze4GvvOrQm6BW9g4O84pbfvpDjCd-impYt0YFFxjy200ongnDT6S2VKOv9U1yhHtAOXKi6qj2Hd4gehR5rRbL0PfXCe0GNelkVebi5-UMttevq_lb3UXKkbjMbFxOdbLGSUndGUg_yavpf-Es4bYYY53T3raM2fKGKuNBRH6JE1-ZYSWiRDPF9Q-3VeVqwqt6yuT_O4V-2uaJui4Svc5VWTlznL6-3qsquzosOSlXXWIjZUMFGxrt62jejqsmzoSu5oRotsm9V5UVBWb1raYld1rKFtTc91RsoMY2se_VolLruqLJtipfgZlUvnJKUar5Oc4nZih5XdpbLOoXekzJ67vvLSq3TApm3MDiD1XTPgwhiP2di6KCpSZYvDMar8LrNVsGr377ubavgrAAD__wmuWTU">