Nate Chandler e23cc54145 [IRGen] Skip reemitting fields referenced by type context descriptor. ...

When reemitting a type context descriptor, several fields
- method lookup function
- dispatch thunk
- nonoverride method descriptor
were previously being reemitted.

In a couple of earlier commits, that behavior was altered to delete the
fields before reemitting them.

  3ad2777a68 [IRGen] Erase nonoverride descriptor on emission.
  c25c180c08 [IRGen] Erase thunks before emission.

Here, the behavior is changed to simply exit early when these fields are
being reemitted.  Also an assertion is added that these fields are
redefined only when reemitting the type context descriptor.

2020-08-15 09:54:54 -07:00

184 KiB

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