[ABI] Collapse generic witness table into protocol conformance record. #19994
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@swift-ci please test and merge |
Collapse the generic witness table, which was used only as a uniquing data structure during witness table instantiation, into the protocol conformance record. This colocates all of the constant protocol conformance metadata and makes it possible for us to recover the generic witness table from the conformance descriptor (including looking at the pattern itself). Rename swift_getGenericWitnessTable() to swift_instantiateWitnessTable() to make it clearer what its purpose is, and take the conformance descriptor directly.
DougGregor
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@swift-ci please smoke test and merge |
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@swift-ci please smoke test and merge |
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Collapse the generic witness table, which was used only as a uniquing
data structure during witness table instantiation, into the protocol
conformance record. This colocates all of the constant protocol conformance
metadata and makes it possible for us to recover the generic witness table
from the conformance descriptor (including looking at the pattern itself).
Rename swift_getGenericWitnessTable() to swift_instantiateWitnessTable()
to make it clearer what its purpose is, and take the conformance descriptor
directly.