Patch forthcoming.
Created attachment 321168 [details] the patch
https://en.wikipedia.org/wiki/Rent_Is_Too_Damn_High_Party
This should help a lot with https://bugs.webkit.org/show_bug.cgi?id=177116
Landed in https://trac.webkit.org/changeset/222199/webkit
<rdar://problem/34693495>
Migrated to https://github.com/gpuweb/WHLSL/issues/184