<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/98502>98502</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            WebAssembly: simd128 feature is required even when the relaxed-simd feature is enabled
        </td>
    </tr>

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

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

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

<pre>
    Given this input:

```llvm
target triple = "wasm32-unknown-wasi"

declare <2 x i64> @llvm.wasm.relaxed.laneselect.v2i64(<2 x i64>, <2 x i64>, <2 x i64>)

define <2 x i64> @test(<2 x i64>, <2 x i64>, <2 x i64>) #0 {
start:
  %_4 = tail call <2 x i64> @llvm.wasm.relaxed.laneselect.v2i64(<2 x i64> %0, <2 x i64> %1, <2 x i64> %2) #3
  ret <2 x i64> %_4
}

attributes #0 = { "target-features"="+relaxed-simd" }
```

this currently crashes with:

```
$ llc foo.ll -filetype=obj -o foo.o
LLVM ERROR: Attempting to emit LOCAL_GET_V128 instruction but the Feature_HasSIMD128 predicate(s) are not met
```

This works if `+simd128` is added but given [this](https://github.com/llvm/llvm-project/blob/fb5a38bb4930736b0aab3ce428b60245921f982f/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h#L107) it seems like this might be intended to work as-is instead of requiring an explicit enabling of the `+simd128` feature.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJysVEFv4zYT_TX0ZWCDGkq2dNDBjuP9PiCLBbLB9hiQ0sjihpJcchQn_76g5CAOsm3RooAhg8PhI9-bN6NDsMeeqBTZTmT7hR65HXypHb1U3lYtD_3CDPVr-cU-Uw_c2gC2P40s1FbIvZBv37Wcf849d3OItT8SA3t7cgRC7UEgnnXoFC7H_qkfzv3yrIMViNdINVVO-3jgBuEF7DoV6hZEOiGv4vmVJ6dfqF453VMgRxWvnjEmYv7hlMAb-LtA8fHuxva_uJop8L8CB4FKgtjsZvzA2r8rByAwe0wnaVhbB5V27r_gHXHlp-fEaPLLKF5eqt7e5Yk_Zz2mF6k2-2vNNLO3ZmQKF7Kx0JtdLPbsgGVDmkdPIRZa7eMXdxcqy2C7WiDCO-ibka7vmGxXjd5Tz-4VKq9DSwHOlts_8-FliSk4V0EzDCvnYNlYR_x6IqH2g_kJy2HaGebku7sfX-H2_v7bvVBb2DJTd2LbH4EHoM4y3H272d49frl9ePyRYA62D-zHiu3QgxkZuCU4zFwf_6fD9_9_3ce0k6faVppJYB6i0tHd_cDQEf8F54fI-Tz4pwC2gbiJu6hWgrlYS7ABdF1TPd18nJpTZLsolMj2AvOW-RSiOHgQeDhabkezqoZO4GFq0flvefLDT6pY4MG4wQg8NCbTKjcmLZTcqLWRWhtVUYq5WUtMswKTpsixucKx8dzDVGuBh9_IbEOgzrjXj6vvo5kNsWoFqrtEbqIYliEQdQGcfaJ5vnT22DIYAtsz9ZEjD5MSoMNymj-BSdcwNODp99H6WCPdA72cnK0sA_XauBgcmqkon8S7OHK1qEtVF6rQCyqTDcpNojZ5tmjLJtlUWhVVarIslcZoKlROKKvKNKYpcGFLlJjKTZIka6lkukKTpbIgtcklVllSi1RSp61bTe07-OPChjBSWeSZxIXThlyYhi5iT2eYNmNrZPuFL6fSmPEYYvvbwOEdhS07Kq9FVlu4UHvjFc0xK0M1ULTGuZ2GN8F1312nT5JRvRi9K_-xdabHB4GHmdxziX8EAAD__zkY434">