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[Runtime] Add specialized CVW entry points for multi payload enums

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rdar://143852239

Adding these specialized entry points reduces the overhead of the witness functions by removing the first indirection.
This commit is contained in:
Dario Rexin
2025-01-29 15:59:38 -08:00
parent 109e2081b6
commit 923cccf1ea
8 changed files with 318 additions and 35 deletions
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62
include/swift/Runtime/RuntimeFunctions.def
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@@ -2747,6 +2747,68 @@ FUNCTION(GenericInitializeBufferWithCopyOfBuffer,
EFFECT(RefCounting),
UNKNOWN_MEMEFFECTS)
// void swift_cvw_destroyMultiPayloadEnumFN(opaque*, const Metadata* type);
FUNCTION(GenericDestroyMultiPayloadEnumFN,
Swift, swift_cvw_destroyMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(VoidTy),
ARGS(Int8PtrTy, TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(Deallocating),
UNKNOWN_MEMEFFECTS)
// void *swift_cvw_assignWithCopyMultiPayloadEnumFN(opaque* dest, opaque* src, const Metadata* type);
FUNCTION(GenericAssignWithCopyMultiPayloadEnumFN,
Swift, swift_cvw_assignWithCopyMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(Int8PtrTy),
ARGS(Int8PtrTy, Int8PtrTy, TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(RefCounting, Deallocating),
UNKNOWN_MEMEFFECTS)
// void *swift_cvw_assignWithTakeMultiPayloadEnumFN(opaque* dest, opaque* src, const Metadata* type);
FUNCTION(GenericAssignWithTakeMultiPayloadEnumFN,
Swift, swift_cvw_assignWithTakeMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(Int8PtrTy),
ARGS(Int8PtrTy, Int8PtrTy, TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(RefCounting, Deallocating),
UNKNOWN_MEMEFFECTS)
// void *swift_cvw_initWithCopyMultiPayloadEnumFN(opaque* dest, opaque* src, const Metadata* type);
FUNCTION(GenericInitWithCopyMultiPayloadEnumFN,
Swift, swift_cvw_initWithCopyMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(Int8PtrTy),
ARGS(Int8PtrTy, Int8PtrTy, TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(RefCounting),
UNKNOWN_MEMEFFECTS)
// void *swift_cvw_initWithTakeMultiPayloadEnumFN(opaque* dest, opaque* src, const Metadata* type);
FUNCTION(GenericInitWithTakeMultiPayloadEnumFN,
Swift, swift_cvw_initWithTakeMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(Int8PtrTy),
ARGS(Int8PtrTy, Int8PtrTy, TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(RefCounting),
UNKNOWN_MEMEFFECTS)
// void *swift_cvw_initializeBufferWithCopyOfBufferMultiPayloadEnumFN(ValueBuffer* dest, ValueBuffer* src, const Metadata* type);
FUNCTION(GenericInitializeBufferWithCopyOfBufferMultiPayloadEnumFN,
Swift, swift_cvw_initializeBufferWithCopyOfBufferMultiPayloadEnumFN,
C_CC, AlwaysAvailable,
RETURNS(Int8PtrTy),
ARGS(getFixedBufferTy()->getPointerTo(),
getFixedBufferTy()->getPointerTo(),
TypeMetadataPtrTy),
ATTRS(NoUnwind),
EFFECT(RefCounting),
UNKNOWN_MEMEFFECTS)
// unsigned swift_cvw_singletonEnum_getEnumTag(swift::OpaqueValue *address,
// const Metadata *metadata);
FUNCTION(SingletonEnumGetEnumTag,