<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/154337>154337</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            NVPTX assembly emited by LLVM NVPTX assembly failed to compile due to `u2` type in global
        </td>
    </tr>

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

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

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

<pre>
    Example LLVM IR:

```
source_filename = "test"
target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-nvidia-cuda11.0.1-unknown"

@"test_global" = internal unnamed_addr addrspace(1) constant i2 1, align 1

attributes #0 = { noredzone nounwind "frame-pointer"="all" "target-cpu"="sm_80" "target-features"="+ptx70,+sm_80,-ptx32,-ptx40,-ptx41,-ptx42,-ptx43,-ptx50,-ptx60,-ptx61,-ptx62,-ptx63,-ptx64,-ptx65,-ptx71,-ptx72,-ptx73,-ptx74,-ptx75,-ptx76,-ptx77,-ptx78,-ptx80,-ptx81,-ptx82,-ptx83,-ptx84,-ptx85,-ptx86,-ptx87,-sm_100,-sm_100a,-sm_101,-sm_101a,-sm_120,-sm_120a,-sm_20,-sm_21,-sm_30,-sm_32,-sm_35,-sm_37,-sm_50,-sm_52,-sm_53,-sm_60,-sm_61,-sm_62,-sm_70,-sm_72,-sm_75,-sm_86,-sm_87,-sm_89,-sm_90,-sm_90a" }

!llvm.module.flags = !{}
```

Used to generate assembly with `llc -march=nvptx64 -mcpu=sm_80 bug.ll` emits the following NVPTX assembly:
```
//
// Generated by LLVM NVPTX Back-End
//

.version 7.0
.target sm_80
.address_size 64

.global .align 1 .u2 test_global = 1;
```

`ptxas` fails to assembly it:

```shell
$ ptxas --gpu-name=sm_80 bug.s -o bug.cubin
ptxas bug.s, line 9; fatal   : Parsing error near '.u2': syntax error
ptxas fatal   : Ptx assembly aborted due to errors
```

 
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJxkVd-PozYQ_muclxHIP8CQhzwkl9uq0rU6Ve2pbysDDnHP2Mg22eT--sqA2Y1WspIvnm8-ZoaZifBe9UbKAypPqDzvxBSu1h2E-inexEME4eyusd3j8PUuhlFL-Pbtxx_w-1-IHRGeD8frwUdvJ9fK14vS0ohBAmJnQJQG6QOiFOFjEK6XAToRhBYPO4VEkZniBWJHXmSK0BqxI6F1diM8Ip7dGEXsyGhm5pv5Fy-eNINTMbxVz9zGcOdFZm6qUyJrp04QkuOcZJP5aeybWXzjKfAa4muvbSM0onRWUSZIZ4SGycRkulfRdQ7ihx9FKxGtCaJ7aK3xQZgAigJB9AsIrXoDZFEXITjVTEF6QJThJbzqBMY62f2yRoKxk3lTpotRX5wYZDba-dExQnZGlAq9xETpkmrWjtNm9MNrjZ_NFynC5KTfOIiexnCvMKJfED2tHl-yMdwZXUGRbgqSwGZiKygTh28gkXki80SOb2cB5QqqRK4SuUrkKpGrjcwTqBKoV7AFXyfBOgnWSbBOgnUSrJNgPQv64ZVg_I7EBsk72i4pfkfpcrujyYOlm6WqEZQJpIeWiVMmTslWwJOJJ0GeOFUyVdtNUl7yiiA9ot6vYI83IOYOqc5ry1Oi9W3IB9tNWuYXLXq_Dg5B1WnlfZhrhI__eNlBsNBLI50IEoT3cmj0A95UuALiWOsWskG49orYeZ0_yIbYrOw8Nx00U59rjTgGOajgIVwlXKzW9k2ZHv788f3vfzfddcF8jIK-xJMA_LaG0kHzWNbSonAS7c_sq-meXPAxv0nnlTVQ5VEtX_fGMg74mMfJlt6_evVLAi9Wp2UnQL5ONeQThQ_LYi4bQez0uWKI4zHchY_pXoTSPpZvq5oKnzeov0qt56gLmF0hy_pxyuL6eaqhh8zOoJ0aZRA-LuzZFFeQVkbCHrETXOKmBQDEjvBdOB_rLJ2zDowUDhCt8okiWkW7f5gg7ot503wSCPf3BERjXax9N8mY2OzlP1cBdt2BdXu2Fzt5IFVZckI4o7vroRKibOqW0KquaCNISUQtZcEZb3BDidypA8W0xDXZE1aykuSUiLLFpBXtnsu22aMCy0Eonc_dbF2_U95P8kDKgrFqp0UjtZ__2Cg18g1ma9yH5XnnDtEpa6beowJr5YN_lwkqaHl47se5ZT_12maNb3iZkNYOo9IyFQZxPNHYA-ExSlAGlsbZTU4friGMPvbB3Ka9CtepyVs7IPoSY1m_stHZ_2QbEH2ZM_CIvqwp3g70_wAAAP__vXhNBQ">