Nate Chandler 7068141770 [IRGen] Emit prespecialized metadata records. ...

Prespecialized records contain direct references to the generic
arguments and protocol witnesses with which it is specialized for now.

Both prespecialized records and the records that are specialized at
runtime gain a trailing pointer-sized flagset.  For now, the flags in it
include whether the record was prespecialized and whether it was known
to be canonical at compile time (which is true for prespecialized
records within the module which defines the type whose metadata is
specialized since in those cases the metadata accessor can be modified).

rdar://problem/56960307

2020-01-09 17:25:33 -08:00

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