It looks like the new tests added in https://trac.webkit.org/changeset/281473/webkit are constant failing on Debug History example: https://results.webkit.org/?suite=javascriptcore-tests&test=stress%2Ffor-in-in-by-val-shouldnt-flush-registers.js.no-llint build: https://build.webkit.org/#/builders/100/builds/736
<rdar://problem/82296667>
Created attachment 436305 [details] Patch
Comment on attachment 436305 [details] Patch r=me
Committed r281500 (240873@main): <https://commits.webkit.org/240873@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 436305 [details].