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ABI: Introduce TargetRelativeProtocolRequirementPointer #29981

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Feb 21, 2020
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ABI: Introduce TargetRelativeProtocolRequirementPointer #29981

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12 changes: 11 additions & 1 deletion include/swift/ABI/Metadata.h
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Original file line number Diff line number Diff line change
Expand Up @@ -861,6 +861,16 @@ using TargetRelativeMethodDescriptorPointer =
using RelativeMethodDescriptorPointer =
TargetRelativeMethodDescriptorPointer<InProcess>;

template<typename Runtime> struct TargetProtocolRequirement;

template<typename Runtime>
using TargetRelativeProtocolRequirementPointer =
RelativeIndirectablePointer<const TargetProtocolRequirement<Runtime>,
/*nullable*/ true>;

using RelativeProtocolRequirementPointer =
TargetRelativeProtocolRequirementPointer<InProcess>;

/// An entry in the method override table, referencing a method from one of our
/// ancestor classes, together with an implementation.
template <typename Runtime>
Expand Down Expand Up @@ -2078,7 +2088,7 @@ using GenericBoxHeapMetadata = TargetGenericBoxHeapMetadata<InProcess>;
/// pointer to the protocol requirement descriptor.
template <typename Runtime>
struct TargetResilientWitness {
RelativeIndirectablePointer<TargetProtocolRequirement<Runtime>> Requirement;
TargetRelativeProtocolRequirementPointer<Runtime> Requirement;
RelativeDirectPointer<void> Witness;
};
using ResilientWitness = TargetResilientWitness<InProcess>;
Expand Down