Rewrite MetadataCache to be a more natural extension of ConcurrentMap #15071
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Change generic witness table instantiation to use a more lightweight entry scheme that allocates the witness table as part of the entry. In contrast, change generic metadata instantiation to use a more straightforward allocation scheme where the metadata is a totally independent allocation. This is preparation for proper cyclic-dependency handling.
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@swift-ci Please test and merge. |
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@swift-ci Please test OS X. |
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@swift-ci Please test OS X. |
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Change generic witness table instantiation to use a more lightweight entry scheme that allocates the witness table as part of the entry.
In contrast, change generic metadata instantiation to use a more straightforward allocation scheme where the metadata is a totally independent allocation.
This is preparation for proper cyclic-dependency handling.