Apple's ports need to support architecture modifiers in test expectations, this is particularly important for for supporting Apple Silicon.
<rdar://problem/64920013>
Created attachment 403166 [details] Patch
Turns out, we already have support for this. We should still refactor our test expectation parser, it's far more complicated than it needs to be.
rs=me
Created attachment 403197 [details] Patch for landing
Committed r263749: <https://trac.webkit.org/changeset/263749> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403197 [details].