This will let us turn on SIMD before LLInt support is completed.
<rdar://problem/101296147>
Pull request: https://github.com/WebKit/WebKit/pull/6147
Committed 257202@main (860fb0de5f02): <https://commits.webkit.org/257202@main> Reviewed commits have been landed. Closing PR #6147 and removing active labels.
Re-opened since this is blocked by bug 248597
Committed 257296@main (85f4c97a6e06): <https://commits.webkit.org/257296@main> Reviewed commits have been landed. Closing PR #7059 and removing active labels.