Slava Pestov 98b5eafcca IRGen: Split up doesClassMetadataRequireDynamicInitialization() into two predicates ...

- doesClassMetadataRequireRelocation() -- returns true if we must
  allocate new metadata at runtime and fill it in, because the class
  has multiple instantiations (generic case) or because the total size
  of the metadata is not known at compile time (resilient ancestry).

- doesClassMetadataRequireInitialization() -- weaker condition than
  the above. It's true if the metadata must be relocated, but it is
  also true if the metadata has otherwise fixed size but must be
  filled in dynamically. This occurs if the class has generic
  ancestry but is itself not generic, or if the class has
  resiliently-sized fields, or missing members.

For now, we don't actually care about the distinciton anywhere,
because we cannot do in-place initialization of class metadata yet.

2018-08-20 14:24:19 -07:00

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