Use JSC_DECLARE_JIT_OPERATION / JSC_DECLARE_CUSTOM_GETTER / JSC_DECLARE_CUSTOM_SETTER
Created attachment 409931 [details] Patch
Comment on attachment 409931 [details] Patch rs=me
Created attachment 409957 [details] Patch
jsc tests are run locally.
Committed r267727: <https://trac.webkit.org/changeset/267727>
<rdar://problem/69733531>
Committed r267731: <https://trac.webkit.org/changeset/267731>
Committed r267732: <https://trac.webkit.org/changeset/267732>