Recently, support began to be added for the upcoming WebAssembly SIMD specification. Unfortunately, RISC-V's vector extension is not yet standardized and this new code breaks compilation since there are no equivalents to the new code for RISC-V.
Pull request: https://github.com/WebKit/WebKit/pull/6132
<rdar://problem/102238433>
Committed 256872@main (969f03eb1212): <https://commits.webkit.org/256872@main> Reviewed commits have been landed. Closing PR #6132 and removing active labels.