include/swift/Runtime/RuntimeFunctions.def

//===--- RuntimeFunctions.def - Runtime Functions Database ------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file defines x-macros used for metaprogramming with the set of
// runtime functions.
//
//===----------------------------------------------------------------------===//

/// FUNCTION(Id, Name, ReturnTys, ArgTys, CC, Attrs)
///   Makes available as "Id" the following runtime function:
///     ReturnTy Name(ArgTys...);
///   ReturnTys is a call to RETURNS, which takes a non-empty list
///     of expressions meant to be looked up in IRGenModule.
///   ArgTys is either NO_ARGS or a call to ARGS, which takes a non-empty
///     list of expressions meant to be looked up in IRGenModule.
///   Attrs is a parenthesized list of attributes.
///
///   By default, passes Id to FUNCTION_ID.  Therefore, the valid uses of
///   this database define either:
///     FUNCTION_ID
///   or all of the following:
///     FUNCTION
///     RETURNS
///     ARGS
///     NO_ARGS
///     ATTRS
///     NO_ATTRS
#ifndef FUNCTION
#define FUNCTION(Id, Name, CC, ReturnTys, ArgTys, Attrs) FUNCTION_ID(Id)
#endif

FUNCTION(AllocBox, swift_allocBox, SwiftCC,
         RETURNS(RefCountedPtrTy, OpaquePtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind))

//  BoxPair swift_makeBoxUnique(OpaqueValue *buffer, Metadata *type, size_t alignMask);
FUNCTION(MakeBoxUnique,
         swift_makeBoxUnique,
         SwiftCC,
         RETURNS(RefCountedPtrTy, OpaquePtrTy),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy, SizeTy),
         ATTRS(NoUnwind))

FUNCTION(DeallocBox, swift_deallocBox, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

FUNCTION(ProjectBox, swift_projectBox, C_CC,
         RETURNS(OpaquePtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ReadNone))

FUNCTION(AllocEmptyBox, swift_allocEmptyBox, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(),
         ATTRS(NoUnwind))

// RefCounted *swift_allocObject(Metadata *type, size_t size, size_t alignMask);
FUNCTION(AllocObject, swift_allocObject, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(TypeMetadataPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// HeapObject *swift_initStackObject(HeapMetadata const *metadata,
//                                   HeapObject *object);
FUNCTION(InitStackObject, swift_initStackObject, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(TypeMetadataPtrTy, RefCountedPtrTy),
         ATTRS(NoUnwind))

// HeapObject *swift_initStaticObject(HeapMetadata const *metadata,
//                                    HeapObject *object);
FUNCTION(InitStaticObject, swift_initStaticObject, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(TypeMetadataPtrTy, RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_verifyEndOfLifetime(HeapObject *object);
FUNCTION(VerifyEndOfLifetime, swift_verifyEndOfLifetime, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_deallocObject(HeapObject *obj, size_t size, size_t alignMask);
FUNCTION(DeallocObject, swift_deallocObject, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_deallocUninitializedObject(HeapObject *obj, size_t size, size_t alignMask);
FUNCTION(DeallocUninitializedObject, swift_deallocUninitializedObject,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_deallocClassInstance(HeapObject *obj, size_t size, size_t alignMask);
FUNCTION(DeallocClassInstance, swift_deallocClassInstance, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_deallocPartialClassInstance(HeapObject *obj, HeapMetadata *type, size_t size, size_t alignMask);
FUNCTION(DeallocPartialClassInstance, swift_deallocPartialClassInstance, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, TypeMetadataPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void *swift_slowAlloc(size_t size, size_t alignMask);
FUNCTION(SlowAlloc, swift_slowAlloc, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_slowDealloc(void *ptr, size_t size, size_t alignMask);
FUNCTION(SlowDealloc, swift_slowDealloc, C_CC,
         RETURNS(VoidTy),
         ARGS(Int8PtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_willThrow(error *ptr);
FUNCTION(WillThrow, swift_willThrow, C_CC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy),
         ATTRS(NoUnwind))

// void swift_errorInMain(error *ptr);
FUNCTION(ErrorInMain, swift_errorInMain, SwiftCC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy),
         ATTRS(NoUnwind))

// void swift_unexpectedError(error *ptr);
FUNCTION(UnexpectedError, swift_unexpectedError, SwiftCC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy),
         ATTRS(NoUnwind, NoReturn))

// void *swift_copyPOD(void *dest, void *src, Metadata *self);
FUNCTION(CopyPOD, swift_copyPOD, C_CC,
         RETURNS(OpaquePtrTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void *swift_retain(void *ptr);
FUNCTION(NativeStrongRetain, swift_retain, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_release(void *ptr);
FUNCTION(NativeStrongRelease, swift_release, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_retain_n(void *ptr, int32_t n);
FUNCTION(NativeStrongRetainN, swift_retain_n, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_release_n(void *ptr, int32_t n);
FUNCTION(NativeStrongReleaseN, swift_release_n, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_setDeallocating(void *ptr);
FUNCTION(NativeSetDeallocating, swift_setDeallocating,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_nonatomic_retain_n(void *ptr, int32_t n);
FUNCTION(NativeNonAtomicStrongRetainN, swift_nonatomic_retain_n, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_nonatomic_release_n(void *ptr, int32_t n);
FUNCTION(NativeNonAtomicStrongReleaseN, swift_nonatomic_release_n, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void *swift_unknownRetain_n(void *ptr, int32_t n);
FUNCTION(UnknownRetainN, swift_unknownRetain_n,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unknownRelease_n(void *ptr, int32_t n);
FUNCTION(UnknownReleaseN, swift_unknownRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void *swift_nonatomic_unknownRetain_n(void *ptr, int32_t n);
FUNCTION(NonAtomicUnknownRetainN, swift_nonatomic_unknownRetain_n,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_nonatomic_unknownRelease_n(void *ptr, int32_t n);
FUNCTION(NonAtomicUnknownReleaseN, swift_nonatomic_unknownRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void swift_bridgeObjectRetain_n(void *ptr, int32_t n);
FUNCTION(BridgeObjectRetainN, swift_bridgeObjectRetain_n,
         C_CC,
         RETURNS(BridgeObjectPtrTy),
         ARGS(BridgeObjectPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void swift_bridgeObjectRelease_n(void *ptr, int32_t n);
FUNCTION(BridgeObjectReleaseN, swift_bridgeObjectRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(BridgeObjectPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void swift_nonatomic_bridgeObjectRetain_n(void *ptr, int32_t n);
FUNCTION(NonAtomicBridgeObjectRetainN, swift_nonatomic_bridgeObjectRetain_n,
         C_CC,
         RETURNS(BridgeObjectPtrTy),
         ARGS(BridgeObjectPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void swift_nonatomic_bridgeObjectRelease_n(void *ptr, int32_t n);
FUNCTION(NonAtomicBridgeObjectReleaseN, swift_nonatomic_bridgeObjectRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(BridgeObjectPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void *swift_nonatomic_retain(void *ptr);
FUNCTION(NativeNonAtomicStrongRetain, swift_nonatomic_retain, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_tryPin(void *ptr);
FUNCTION(NativeTryPin, swift_tryPin, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_nonatomic_release(void *ptr);
FUNCTION(NativeNonAtomicStrongRelease, swift_nonatomic_release, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_tryRetain(void *ptr);
FUNCTION(NativeTryRetain, swift_tryRetain, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_unpin(void *ptr);
FUNCTION(NativeUnpin, swift_unpin, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// bool swift_isDeallocating(void *ptr);
FUNCTION(IsDeallocating, swift_isDeallocating, C_CC,
         RETURNS(Int1Ty),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// void *swift_nonatomic_tryPin(void *ptr);
FUNCTION(NonAtomicNativeTryPin, swift_nonatomic_tryPin, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_nonatomic_unpin(void *ptr);
FUNCTION(NonAtomicNativeUnpin, swift_nonatomic_unpin, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_unknownRetain(void *ptr);
FUNCTION(UnknownRetain, swift_unknownRetain, C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unknownRelease(void *ptr);
FUNCTION(UnknownRelease, swift_unknownRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_nonatomic_unknownRetain(void *ptr);
FUNCTION(NonAtomicUnknownRetain, swift_nonatomic_unknownRetain, C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_nonatomic_unknownRelease(void *ptr);
FUNCTION(NonAtomicUnknownRelease, swift_nonatomic_unknownRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_bridgeObjectRetain(void *ptr);
FUNCTION(BridgeObjectStrongRetain, swift_bridgeObjectRetain, C_CC,
         RETURNS(BridgeObjectPtrTy),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind))

// void swift_bridgeRelease(void *ptr);
FUNCTION(BridgeObjectStrongRelease, swift_bridgeObjectRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind))

// void *swift_nonatomic_bridgeObjectRetain(void *ptr);
FUNCTION(NonAtomicBridgeObjectStrongRetain, swift_nonatomic_bridgeObjectRetain, C_CC,
         RETURNS(BridgeObjectPtrTy),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind))

// void swift_nonatomic_bridgeRelease(void *ptr);
FUNCTION(NonAtomicBridgeObjectStrongRelease, swift_nonatomic_bridgeObjectRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind))


// error *swift_errorRetain(error *ptr);
FUNCTION(ErrorStrongRetain, swift_errorRetain, C_CC,
         RETURNS(ErrorPtrTy),
         ARGS(ErrorPtrTy),
         ATTRS(NoUnwind))

// void swift_errorRelease(void *ptr);
FUNCTION(ErrorStrongRelease, swift_errorRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy),
         ATTRS(NoUnwind))

// void *swift_unownedRetain(void *ptr);
FUNCTION(NativeUnownedRetain, swift_unownedRetain, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unownedRelease(void *ptr);
FUNCTION(NativeUnownedRelease, swift_unownedRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_nonatomic_unownedRetain(void *ptr);
FUNCTION(NonAtomicNativeUnownedRetain, swift_nonatomic_unownedRetain,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_nonatomic_unownedRelease(void *ptr);
FUNCTION(NonAtomicNativeUnownedRelease, swift_nonatomic_unownedRelease,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void *swift_unownedRetain_n(void *ptr, int32_t n);
FUNCTION(UnownedRetainN, swift_unownedRetain_n,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unownedRelease_n(void *ptr, int32_t n);
FUNCTION(UnownedReleaseN, swift_unownedRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void *swift_nonatomic_unownedRetain_n(void *ptr, int32_t n);
FUNCTION(NonAtomicUnownedRetainN, swift_nonatomic_unownedRetain_n,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_nonatomic_unownedRelease_n(void *ptr, int32_t n);
FUNCTION(NonAtomicUnownedReleaseN, swift_nonatomic_unownedRelease_n,
         C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void *swift_unownedRetainStrong(void *ptr);
FUNCTION(NativeStrongRetainUnowned, swift_unownedRetainStrong, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_nonatomic_unownedRetainStrong(void *ptr);
FUNCTION(NonAtomicNativeStrongRetainUnowned, swift_nonatomic_unownedRetainStrong,
         C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unownedRetainStrongAndRelease(void *ptr);
FUNCTION(NativeStrongRetainAndUnownedRelease,
         swift_unownedRetainStrongAndRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_nonatomic_unownedRetainStrongAndRelease(void *ptr);
FUNCTION(NonAtomicNativeStrongRetainAndUnownedRelease,
         swift_nonatomic_unownedRetainStrongAndRelease, C_CC,
         RETURNS(VoidTy),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind))

// void swift_weakDestroy(WeakReference *object);
FUNCTION(NativeWeakDestroy, swift_weakDestroy, C_CC,
         RETURNS(VoidTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// WeakReference *swift_weakInit(WeakReference *object, void *value);
FUNCTION(NativeWeakInit, swift_weakInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_weakAssign(WeakReference *object, void *value);
FUNCTION(NativeWeakAssign, swift_weakAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, RefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_weakLoadStrong(WeakReference *object);
FUNCTION(NativeWeakLoadStrong, swift_weakLoadStrong,C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// void *swift_weakTakeStrong(WeakReference *object);
FUNCTION(NativeWeakTakeStrong, swift_weakTakeStrong,C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// WeakReference *swift_weakCopyInit(WeakReference *dest, WeakReference *src);
FUNCTION(NativeWeakCopyInit, swift_weakCopyInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_weakTakeInit(WeakReference *dest, WeakReference *src);
FUNCTION(NativeWeakTakeInit, swift_weakTakeInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_weakCopyAssign(WeakReference *dest, WeakReference *src);
FUNCTION(NativeWeakCopyAssign, swift_weakCopyAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_weakTakeAssign(WeakReference *dest, WeakReference *src);
FUNCTION(NativeWeakTakeAssign, swift_weakTakeAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unknownWeakDestroy(WeakReference *object);
FUNCTION(UnknownWeakDestroy, swift_unknownWeakDestroy, C_CC,
         RETURNS(VoidTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// void swift_unknownWeakInit(WeakReference *object, void *value);
FUNCTION(UnknownWeakInit, swift_unknownWeakInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_unknownWeakAssign(WeakReference *object, void *value);
FUNCTION(UnknownWeakAssign, swift_unknownWeakAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_unknownWeakLoad(WeakReference *object);
FUNCTION(UnknownWeakLoadStrong, swift_unknownWeakLoadStrong,C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// void *swift_unknownWeakTake(WeakReference *object);
FUNCTION(UnknownWeakTakeStrong, swift_unknownWeakTakeStrong,C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(WeakReferencePtrTy),
         ATTRS(NoUnwind))

// WeakReference *swift_unknownWeakCopyInit(WeakReference *dest, WeakReference *src);
FUNCTION(UnknownWeakCopyInit, swift_unknownWeakCopyInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_unknownWeakTakeInit(WeakReference *dest, WeakReference *src);
FUNCTION(UnknownWeakTakeInit, swift_unknownWeakTakeInit, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_unknownWeakCopyAssign(WeakReference *dest, WeakReference *src);
FUNCTION(UnknownWeakCopyAssign, swift_unknownWeakCopyAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// WeakReference *swift_unknownWeakTakeAssign(WeakReference *dest, WeakReference *src);
FUNCTION(UnknownWeakTakeAssign, swift_unknownWeakTakeAssign, C_CC,
         RETURNS(WeakReferencePtrTy),
         ARGS(WeakReferencePtrTy, WeakReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void swift_unknownUnownedDestroy(UnownedReference *object);
FUNCTION(UnknownUnownedDestroy, swift_unknownUnownedDestroy, C_CC,
         RETURNS(VoidTy),
         ARGS(UnownedReferencePtrTy),
         ATTRS(NoUnwind))

// UnownedReference *swift_unknownUnownedInit(UnownedReference *object, void *value);
FUNCTION(UnknownUnownedInit, swift_unknownUnownedInit, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// UnownedReference *swift_unknownUnownedAssign(UnownedReference *object, void *value);
FUNCTION(UnknownUnownedAssign, swift_unknownUnownedAssign, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// void *swift_unknownUnownedLoad(UnownedReference *object);
FUNCTION(UnknownUnownedLoadStrong, swift_unknownUnownedLoadStrong, C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(UnownedReferencePtrTy),
         ATTRS(NoUnwind))

// void *swift_unknownUnownedTake(UnownedReference *object);
FUNCTION(UnknownUnownedTakeStrong, swift_unknownUnownedTakeStrong, C_CC,
         RETURNS(UnknownRefCountedPtrTy),
         ARGS(UnownedReferencePtrTy),
         ATTRS(NoUnwind))

// UnownedReference *swift_unknownUnownedCopyInit(UnownedReference *dest, UnownedReference *src);
FUNCTION(UnknownUnownedCopyInit, swift_unknownUnownedCopyInit, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnownedReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// UnownedReference *swift_unknownUnownedTakeInit(UnownedReference *dest, UnownedReference *src);
FUNCTION(UnknownUnownedTakeInit, swift_unknownUnownedTakeInit, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnownedReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// UnownedReference *swift_unknownUnownedCopyAssign(UnownedReference *dest, UnownedReference *src);
FUNCTION(UnknownUnownedCopyAssign, swift_unknownUnownedCopyAssign, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnownedReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// UnownedReference *swift_unknownUnownedTakeAssign(UnownedReference *dest, UnownedReference *src);
FUNCTION(UnknownUnownedTakeAssign, swift_unknownUnownedTakeAssign, C_CC,
         RETURNS(UnownedReferencePtrTy),
         ARGS(UnownedReferencePtrTy, UnownedReferencePtrTy),
         ATTRS(NoUnwind, FirstParamReturned))

// bool swift_isUniquelyReferencedNonObjC(const void *);
FUNCTION(IsUniquelyReferencedNonObjC, swift_isUniquelyReferencedNonObjC,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedNonObjC_nonNull(const void *);
FUNCTION(IsUniquelyReferencedNonObjC_nonNull,
         swift_isUniquelyReferencedNonObjC_nonNull,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedOrPinnedNonObjC_nonNull(const void *);
FUNCTION(IsUniquelyReferencedOrPinnedNonObjC_nonNull,
         swift_isUniquelyReferencedOrPinnedNonObjC_nonNull,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(UnknownRefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedNonObjC_nonNull_bridgeObject(
//   uintptr_t bits);
FUNCTION(IsUniquelyReferencedNonObjC_nonNull_bridgeObject,
         swift_isUniquelyReferencedNonObjC_nonNull_bridgeObject,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedOrPinnedNonObjC_nonNull_bridgeObject(
//   uintptr_t bits);
FUNCTION(IsUniquelyReferencedOrPinnedNonObjC_nonNull_bridgeObject,
         swift_isUniquelyReferencedOrPinnedNonObjC_nonNull_bridgeObject,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(BridgeObjectPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferenced_native(const struct HeapObject *);
FUNCTION(IsUniquelyReferenced_native, swift_isUniquelyReferenced_native,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedOrPinned_native(const struct HeapObject *);
FUNCTION(IsUniquelyReferencedOrPinned_native,
         swift_isUniquelyReferencedOrPinned_native,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferenced_nonNull_native(const struct HeapObject *);
FUNCTION(IsUniquelyReferenced_nonNull_native,
         swift_isUniquelyReferenced_nonNull_native,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// bool swift_isUniquelyReferencedOrPinned_nonNull_native(
//   const struct HeapObject *);
FUNCTION(IsUniquelyReferencedOrPinned_nonNull_native,
         swift_isUniquelyReferencedOrPinned_nonNull_native,
         C_CC,
         RETURNS(Int1Ty),
         ARGS(RefCountedPtrTy),
         ATTRS(NoUnwind, ZExt))

// void swift_arrayInitWithCopy(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayInitWithCopy, swift_arrayInitWithCopy, C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayInitWithTakeNoAlias(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayInitWithTakeNoAlias, swift_arrayInitWithTakeNoAlias, C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayInitWithTakeFrontToBack(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayInitWithTakeFrontToBack, swift_arrayInitWithTakeFrontToBack,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayInitWithTakeBackToFront(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayInitWithTakeBackToFront, swift_arrayInitWithTakeBackToFront,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayAssignWithCopyNoAlias(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayAssignWithCopyNoAlias, swift_arrayAssignWithCopyNoAlias,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayAssignWithCopyFrontToBack(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayAssignWithCopyFrontToBack, swift_arrayAssignWithCopyFrontToBack,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayAssignWithCopyBackToFront(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayAssignWithCopyBackToFront, swift_arrayAssignWithCopyBackToFront,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayAssignWithTake(opaque*, opaque*, size_t, type*);
FUNCTION(ArrayAssignWithTake, swift_arrayAssignWithTake, C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// void swift_arrayDestroy(opaque*, size_t, type*);
FUNCTION(ArrayDestroy, swift_arrayDestroy, C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))

// Metadata *swift_getFunctionTypeMetadata(unsigned long flags,
//                                         const Metadata **parameters,
//                                         const uint32_t *parameterFlags,
//                                         const Metadata *result);
FUNCTION(GetFunctionMetadata, swift_getFunctionTypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(SizeTy,
              TypeMetadataPtrTy->getPointerTo(0),
              Int32Ty->getPointerTo(0),
              TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getFunctionTypeMetadata0(unsigned long flags,
//                                          const Metadata *resultMetadata);
FUNCTION(GetFunctionMetadata0, swift_getFunctionTypeMetadata0, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(SizeTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getFunctionTypeMetadata1(unsigned long flags,
//                                          const Metadata *arg0,
//                                          const Metadata *resultMetadata);
FUNCTION(GetFunctionMetadata1, swift_getFunctionTypeMetadata1, C_CC,
        RETURNS(TypeMetadataPtrTy),
        ARGS(SizeTy, TypeMetadataPtrTy, TypeMetadataPtrTy),
        ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getFunctionTypeMetadata2(unsigned long flags,
//                                          const Metadata *arg0,
//                                          const Metadata *arg1,
//                                          const Metadata *resultMetadata);
FUNCTION(GetFunctionMetadata2, swift_getFunctionTypeMetadata2,
        C_CC,
        RETURNS(TypeMetadataPtrTy),
        ARGS(SizeTy, TypeMetadataPtrTy, TypeMetadataPtrTy, TypeMetadataPtrTy),
        ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getFunctionTypeMetadata3(unsigned long flags,
//                                          const Metadata *arg0,
//                                          const Metadata *arg1,
//                                          const Metadata *arg2,
//                                          const Metadata *resultMetadata);
FUNCTION(GetFunctionMetadata3, swift_getFunctionTypeMetadata3,
        C_CC,
        RETURNS(TypeMetadataPtrTy),
        ARGS(SizeTy, TypeMetadataPtrTy, TypeMetadataPtrTy, TypeMetadataPtrTy,
             TypeMetadataPtrTy),
        ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getForeignTypeMetadata(Metadata *nonUnique);
FUNCTION(GetForeignTypeMetadata, swift_getForeignTypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone)) // only writes to runtime-private fields

// Metadata *swift_getGenericMetadata(TypeContextDescriptor *type,
//                                    const void *arguments);
FUNCTION(GetGenericMetadata, swift_getGenericMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeContextDescriptorPtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_allocateGenericClassMetadata(ClassDescriptor *type,
//                                              const void *template,
//                                              size_t templateSize,
//                                              size_t templateAddressPoint,
//                                              const void * const *arguments,
//                                              objc_class *superclass,
//                                              size_t numImmediateMembers);
FUNCTION(AllocateGenericClassMetadata, swift_allocateGenericClassMetadata,
         C_CC, RETURNS(TypeMetadataPtrTy),
         ARGS(TypeContextDescriptorPtrTy, Int8PtrPtrTy, SizeTy, SizeTy,
              Int8PtrPtrTy, ObjCClassPtrTy, SizeTy),
         ATTRS(NoUnwind))

// Metadata *swift_allocateGenericValueMetadata(ValueTypeDescriptor *type,
//                                              const void *template,
//                                              size_t templateSize,
//                                              const void * const *arguments);
FUNCTION(AllocateGenericValueMetadata, swift_allocateGenericValueMetadata,
         C_CC, RETURNS(TypeMetadataPtrTy),
         ARGS(TypeContextDescriptorPtrTy, Int8PtrPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// const ProtocolWitnessTable *
// swift_getGenericWitnessTable(GenericProtocolWitnessTable *genericTable,
//                              const Metadata *type,
//                              void * const *instantiationArgs);
FUNCTION(GetGenericWitnessTable, swift_getGenericWitnessTable, C_CC,
         RETURNS(WitnessTablePtrTy),
         ARGS(getGenericWitnessTableCacheTy()->getPointerTo(),
              TypeMetadataPtrTy,
              Int8PtrPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getMetatypeMetadata(Metadata *instanceTy);
FUNCTION(GetMetatypeMetadata, swift_getMetatypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getExistentialMetatypeMetadata(Metadata *instanceTy);
FUNCTION(GetExistentialMetatypeMetadata,
         swift_getExistentialMetatypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getObjCClassMetadata(objc_class *theClass);
FUNCTION(GetObjCClassMetadata, swift_getObjCClassMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(ObjCClassPtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getObjCClassFromMetadata(objc_class *theClass);
FUNCTION(GetObjCClassFromMetadata, swift_getObjCClassFromMetadata, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getTupleTypeMetadata(TupleTypeFlags flags,
//                                      Metadata * const *elts,
//                                      const char *labels,
//                                      value_witness_table_t *proposed);
FUNCTION(GetTupleMetadata, swift_getTupleTypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(SizeTy, TypeMetadataPtrTy->getPointerTo(0),
              Int8PtrTy, WitnessTablePtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getTupleTypeMetadata2(Metadata *elt0, Metadata *elt1,
//                                       const char *labels,
//                                       value_witness_table_t *proposed);
FUNCTION(GetTupleMetadata2, swift_getTupleTypeMetadata2, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, TypeMetadataPtrTy,
              Int8PtrTy, WitnessTablePtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getTupleTypeMetadata3(Metadata *elt0, Metadata *elt1,
//                                       Metadata *elt2, const char *labels,
//                                       value_witness_table_t *proposed);
FUNCTION(GetTupleMetadata3, swift_getTupleTypeMetadata3, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, TypeMetadataPtrTy, TypeMetadataPtrTy,
              Int8PtrTy, WitnessTablePtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getExistentialTypeMetadata(
//                              ProtocolClassConstraint classConstraint,
//                              const Metadata *superclassConstraint,
//                              size_t numProtocols,
//                              const protocol_descriptor_t * const *protocols);
//
// Note: ProtocolClassConstraint::Class is 0, ::Any is 1.
FUNCTION(GetExistentialMetadata,
         swift_getExistentialTypeMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(Int1Ty, TypeMetadataPtrTy, SizeTy,
              ProtocolDescriptorPtrTy->getPointerTo()),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_relocateClassMetadata(Metadata *self,
//                                       size_t templateSize,
//                                       size_t numImmediateMembers);
FUNCTION(RelocateClassMetadata,
         swift_relocateClassMetadata, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, SizeTy, SizeTy),
         ATTRS(NoUnwind))

// struct FieldInfo { size_t Size; size_t AlignMask; };
// void swift_initClassMetadata_UniversalStrategy(Metadata *self,
//                                                size_t numFields,
//                                                TypeLayout * const *fieldTypes,
//                                                size_t *fieldOffsets);
FUNCTION(InitClassMetadataUniversal,
         swift_initClassMetadata_UniversalStrategy, C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, SizeTy,
              Int8PtrPtrTy->getPointerTo(),
              SizeTy->getPointerTo()),
         ATTRS(NoUnwind))

// void swift_initStructMetadata(Metadata *structType,
//                               StructLayoutFlags flags,
//                               size_t numFields,
//                               TypeLayout * const *fieldTypes,
//                               size_t *fieldOffsets);
FUNCTION(InitStructMetadata,
         swift_initStructMetadata, C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, SizeTy, SizeTy, Int8PtrPtrTy->getPointerTo(0),
              SizeTy->getPointerTo()),
         ATTRS(NoUnwind))

// void swift_initEnumMetadataSingleCase(Metadata *enumType,
//                                       EnumLayoutFlags flags,
//                                       TypeLayout *payload);
FUNCTION(InitEnumMetadataSingleCase,
         swift_initEnumMetadataSingleCase,
         C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// void swift_initEnumMetadataSinglePayload(Metadata *enumType,
//                                          EnumLayoutFlags flags,
//                                          TypeLayout *payload,
//                                          unsigned num_empty_cases);
FUNCTION(InitEnumMetadataSinglePayload,
         swift_initEnumMetadataSinglePayload,
         C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, SizeTy, Int8PtrPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// void swift_initEnumMetadataMultiPayload(Metadata *enumType,
//                                         size_t numPayloads,
//                                         TypeLayout * const *payloadTypes);
FUNCTION(InitEnumMetadataMultiPayload,
         swift_initEnumMetadataMultiPayload,
         C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, SizeTy, SizeTy, Int8PtrPtrTy->getPointerTo(0)),
         ATTRS(NoUnwind))

// int swift_getEnumCaseSinglePayload(opaque_t *obj, Metadata *payload,
//                                    unsigned num_empty_cases);
FUNCTION(GetEnumCaseSinglePayload,
         swift_getEnumCaseSinglePayload,
         C_CC,
         RETURNS(Int32Ty),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy, Int32Ty),
         ATTRS(NoUnwind, ReadOnly))

// int swift_getEnumCaseMultiPayload(opaque_t *obj, Metadata *enumTy);
FUNCTION(GetEnumCaseMultiPayload,
         swift_getEnumCaseMultiPayload,
         C_CC,
         RETURNS(Int32Ty),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void swift_storeEnumTagSinglePayload(opaque_t *obj, Metadata *payload,
//                                      int case_index,
//                                      unsigned num_empty_cases);
FUNCTION(StoreEnumTagSinglePayload,
         swift_storeEnumTagSinglePayload,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy, Int32Ty, Int32Ty),
         ATTRS(NoUnwind))

// void swift_storeEnumTagMultiPayload(opaque_t *obj, Metadata *enumTy,
//                                     int case_index);
FUNCTION(StoreEnumTagMultiPayload,
         swift_storeEnumTagMultiPayload,
         C_CC,
         RETURNS(VoidTy),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy, Int32Ty),
         ATTRS(NoUnwind))

// Class object_getClass(id object);
//
// This is readonly instead of readnone because isa-rewriting can have
// a noticeable effect.
FUNCTION(GetObjectClass, object_getClass, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(ObjCPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// id object_dispose(id object);
FUNCTION(ObjectDispose, object_dispose, C_CC,
         RETURNS(ObjCPtrTy),
         ARGS(ObjCPtrTy),
         ATTRS(NoUnwind))

// Class objc_lookUpClass(const char *name);
FUNCTION(LookUpClass, objc_lookUpClass, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(Int8PtrTy),
         ATTRS(NoUnwind, ReadNone))

// Metadata *swift_getObjectType(id object);
FUNCTION(GetObjectType, swift_getObjectType, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(ObjCPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// Metadata *swift_getDynamicType(opaque_t *obj, Metadata *self);
FUNCTION(GetDynamicType, swift_getDynamicType, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(OpaquePtrTy, TypeMetadataPtrTy, Int1Ty),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastClass(void*, void*);
FUNCTION(DynamicCastClass, swift_dynamicCastClass, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastClassUnconditional(void*, void*);
FUNCTION(DynamicCastClassUnconditional, swift_dynamicCastClassUnconditional,
         C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastObjCClass(void*, void*);
FUNCTION(DynamicCastObjCClass, swift_dynamicCastObjCClass, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastObjCClassUnconditional(void*, void*);
FUNCTION(DynamicCastObjCClassUnconditional,
         swift_dynamicCastObjCClassUnconditional, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastUnknownClass(void*, void*);
FUNCTION(DynamicCastUnknownClass, swift_dynamicCastUnknownClass, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// void *swift_dynamicCastUnknownClassUnconditional(void*, void*);
FUNCTION(DynamicCastUnknownClassUnconditional,
         swift_dynamicCastUnknownClassUnconditional, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind, ReadOnly))

// type *swift_dynamicCastMetatype(type*, type*);
FUNCTION(DynamicCastMetatype, swift_dynamicCastMetatype, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// type *swift_dynamicCastMetatypeUnconditional(type*, type*);
FUNCTION(DynamicCastMetatypeUnconditional,
         swift_dynamicCastMetatypeUnconditional, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// objc_class *swift_dynamicCastObjCClassMetatype(objc_class*, objc_class*);
FUNCTION(DynamicCastObjCClassMetatype, swift_dynamicCastObjCClassMetatype,
         C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(ObjCClassPtrTy, ObjCClassPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// objc_class *swift_dynamicCastObjCClassMetatypeUnconditional(objc_class*, objc_class*);
FUNCTION(DynamicCastObjCClassMetatypeUnconditional,
         swift_dynamicCastObjCClassMetatypeUnconditional, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(ObjCClassPtrTy, ObjCClassPtrTy),
         ATTRS(NoUnwind, ReadOnly))

// bool swift_dynamicCast(opaque*, opaque*, type*, type*, size_t);
FUNCTION(DynamicCast, swift_dynamicCast, C_CC,
         RETURNS(Int1Ty),
         ARGS(OpaquePtrTy, OpaquePtrTy, TypeMetadataPtrTy, TypeMetadataPtrTy,
              SizeTy),
         ATTRS(ZExt, NoUnwind))

// type* swift_dynamicCastTypeToObjCProtocolUnconditional(type* object,
//                                               size_t numProtocols,
//                                               Protocol * const *protocols);
FUNCTION(DynamicCastTypeToObjCProtocolUnconditional,
         swift_dynamicCastTypeToObjCProtocolUnconditional, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// type* swift_dynamicCastTypeToObjCProtocolConditional(type* object,
//                                             size_t numProtocols,
//                                             Protocol * const *protocols);
FUNCTION(DynamicCastTypeToObjCProtocolConditional,
         swift_dynamicCastTypeToObjCProtocolConditional, C_CC,
         RETURNS(TypeMetadataPtrTy),
         ARGS(TypeMetadataPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// id swift_dynamicCastObjCProtocolUnconditional(id object,
//                                               size_t numProtocols,
//                                               Protocol * const *protocols);
FUNCTION(DynamicCastObjCProtocolUnconditional,
         swift_dynamicCastObjCProtocolUnconditional, C_CC,
         RETURNS(ObjCPtrTy),
         ARGS(ObjCPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// id swift_dynamicCastObjCProtocolConditional(id object,
//                                             size_t numProtocols,
//                                             Protocol * const *protocols);
FUNCTION(DynamicCastObjCProtocolConditional,
         swift_dynamicCastObjCProtocolConditional, C_CC,
         RETURNS(ObjCPtrTy),
         ARGS(ObjCPtrTy, SizeTy, Int8PtrPtrTy),
         ATTRS(NoUnwind))

// id swift_dynamicCastMetatypeToObjectUnconditional(type *type);
FUNCTION(DynamicCastMetatypeToObjectUnconditional,
         swift_dynamicCastMetatypeToObjectUnconditional, C_CC,
         RETURNS(ObjCPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// id swift_dynamicCastMetatypeToObjectConditional(type *type);
FUNCTION(DynamicCastMetatypeToObjectConditional,
         swift_dynamicCastMetatypeToObjectConditional, C_CC,
         RETURNS(ObjCPtrTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind, ReadNone))

// witness_table* swift_conformsToProtocol(type*, protocol*);
FUNCTION(ConformsToProtocol,
         swift_conformsToProtocol, C_CC,
         RETURNS(WitnessTablePtrTy),
         ARGS(TypeMetadataPtrTy, ProtocolDescriptorPtrTy),
         ATTRS(NoUnwind, ReadNone))

// bool swift_isClassType(type*);
FUNCTION(IsClassType,
         swift_isClassType, C_CC,
         RETURNS(Int1Ty),
         ARGS(TypeMetadataPtrTy),
         ATTRS(ZExt, NoUnwind, ReadNone))

// bool swift_isOptionalType(type*);
FUNCTION(IsOptionalType,
         swift_isOptionalType, C_CC,
         RETURNS(Int1Ty),
         ARGS(TypeMetadataPtrTy),
         ATTRS(ZExt, NoUnwind, ReadNone))

// void swift_once(swift_once_t *predicate,
//                 void (*function_code)(RefCounted*),
//                 void *context);
FUNCTION(Once, swift_once, C_CC,
         RETURNS(VoidTy),
         ARGS(OnceTy->getPointerTo(), Int8PtrTy, Int8PtrTy),
         ATTRS())

// void swift_registerProtocols(const ProtocolRecord *begin,
//                              const ProtocolRecord *end)
FUNCTION(RegisterProtocols,
         swift_registerProtocols, C_CC,
         RETURNS(VoidTy),
         ARGS(ProtocolRecordPtrTy, ProtocolRecordPtrTy),
         ATTRS(NoUnwind))

// void swift_registerProtocolConformances(const ProtocolConformanceRecord *begin,
//                                         const ProtocolConformanceRecord *end)
FUNCTION(RegisterProtocolConformances,
         swift_registerProtocolConformances, C_CC,
         RETURNS(VoidTy),
         ARGS(RelativeAddressPtrTy, RelativeAddressPtrTy),
         ATTRS(NoUnwind))
FUNCTION(RegisterTypeMetadataRecords,
         swift_registerTypeMetadataRecords, C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataRecordPtrTy, TypeMetadataRecordPtrTy),
         ATTRS(NoUnwind))
FUNCTION(RegisterFieldDescriptors,
         swift_registerFieldDescriptors, DefaultCC,
         RETURNS(VoidTy),
         ARGS(FieldDescriptorPtrPtrTy, SizeTy),
         ATTRS(NoUnwind))

// void swift_beginAccess(void *pointer, ValueBuffer *scratch, size_t flags);
FUNCTION(BeginAccess, swift_beginAccess, C_CC,
         RETURNS(VoidTy),
         ARGS(Int8PtrTy, getFixedBufferTy()->getPointerTo(), SizeTy, Int8PtrTy),
         ATTRS(NoUnwind))

// void swift_endAccess(ValueBuffer *scratch);
FUNCTION(EndAccess, swift_endAccess, C_CC,
         RETURNS(VoidTy),
         ARGS(getFixedBufferTy()->getPointerTo()),
         ATTRS(NoUnwind))

FUNCTION(InstantiateObjCClass, swift_instantiateObjCClass, C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy),
         ATTRS(NoUnwind))
FUNCTION(ObjCAllocWithZone, objc_allocWithZone, C_CC,
         RETURNS(ObjCPtrTy), ARGS(ObjCClassPtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCRetain, objc_retain, C_CC,
         RETURNS(ObjCPtrTy), ARGS(ObjCPtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCRelease, objc_release, C_CC,
         RETURNS(VoidTy), ARGS(ObjCPtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCAutorelease, objc_autorelease, C_CC,
         RETURNS(ObjCPtrTy), ARGS(ObjCPtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCRetainAutoreleasedReturnValue,
         objc_retainAutoreleasedReturnValue, C_CC,
         RETURNS(Int8PtrTy), ARGS(Int8PtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCAutoreleaseReturnValue, objc_autoreleaseReturnValue, C_CC,
         RETURNS(ObjCPtrTy), ARGS(ObjCPtrTy), ATTRS(NoUnwind))
FUNCTION(ObjCMsgSend, objc_msgSend, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCMsgSendStret, objc_msgSend_stret, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCMsgSendSuper, objc_msgSendSuper, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCMsgSendSuperStret, objc_msgSendSuper_stret, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCMsgSendSuper2, objc_msgSendSuper2, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCMsgSendSuperStret2, objc_msgSendSuper2_stret, C_CC,
         RETURNS(VoidTy), NO_ARGS, NO_ATTRS)
FUNCTION(ObjCSelRegisterName, sel_registerName, C_CC,
         RETURNS(ObjCSELTy), ARGS(Int8PtrTy), ATTRS(NoUnwind, ReadNone))
FUNCTION(ClassReplaceMethod, class_replaceMethod, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(ObjCClassPtrTy, Int8PtrTy, Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(ClassAddProtocol, class_addProtocol, C_CC,
         RETURNS(VoidTy),
         ARGS(ObjCClassPtrTy, Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(ObjCGetClass, objc_getClass, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(ObjCGetMetaClass, objc_getMetaClass, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(ObjCClassGetName, class_getName, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(ObjCClassPtrTy),
         ATTRS(NoUnwind))

FUNCTION(GetObjCProtocol, objc_getProtocol, C_CC,
         RETURNS(ProtocolDescriptorPtrTy),
         ARGS(Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(AllocateObjCProtocol, objc_allocateProtocol, C_CC,
         RETURNS(ProtocolDescriptorPtrTy),
         ARGS(Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(RegisterObjCProtocol, objc_registerProtocol, C_CC,
         RETURNS(VoidTy),
         ARGS(ProtocolDescriptorPtrTy),
         ATTRS(NoUnwind))
FUNCTION(ProtocolAddMethodDescription, protocol_addMethodDescription, C_CC,
         RETURNS(VoidTy),
         ARGS(ProtocolDescriptorPtrTy, Int8PtrTy, Int8PtrTy,
              ObjCBoolTy, ObjCBoolTy),
         ATTRS(NoUnwind))
FUNCTION(ProtocolAddProtocol, protocol_addProtocol, C_CC,
         RETURNS(VoidTy),
         ARGS(ProtocolDescriptorPtrTy, ProtocolDescriptorPtrTy),
         ATTRS(NoUnwind))

FUNCTION(Malloc, malloc, C_CC,
         RETURNS(Int8PtrTy),
         ARGS(SizeTy),
         NO_ATTRS)
FUNCTION(Free, free, C_CC,
         RETURNS(VoidTy),
         ARGS(Int8PtrTy),
         NO_ATTRS)

// void *_Block_copy(void *block);
FUNCTION(BlockCopy, _Block_copy, C_CC,
         RETURNS(ObjCBlockPtrTy),
         ARGS(ObjCBlockPtrTy),
         NO_ATTRS)
// void _Block_release(void *block);
FUNCTION(BlockRelease, _Block_release, C_CC,
         RETURNS(VoidTy),
         ARGS(ObjCBlockPtrTy),
         ATTRS(NoUnwind))

// void swift_deletedMethodError();
FUNCTION(DeletedMethodError, swift_deletedMethodError, C_CC,
        RETURNS(VoidTy),
        ARGS(),
        ATTRS(NoUnwind))

FUNCTION(AllocError, swift_allocError, SwiftCC,
         RETURNS(ErrorPtrTy, OpaquePtrTy),
         ARGS(TypeMetadataPtrTy, WitnessTablePtrTy, OpaquePtrTy, Int1Ty),
         ATTRS(NoUnwind))
FUNCTION(DeallocError, swift_deallocError, C_CC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy, TypeMetadataPtrTy),
         ATTRS(NoUnwind))
FUNCTION(GetErrorValue, swift_getErrorValue, C_CC,
         RETURNS(VoidTy),
         ARGS(ErrorPtrTy, Int8PtrPtrTy, OpenedErrorTriplePtrTy),
         ATTRS(NoUnwind))

// void __tsan_external_write(void *addr, void *caller_pc, void *tag);
// This is a Thread Sanitizer instrumentation entry point in compiler-rt.
FUNCTION(TSanInoutAccess, __tsan_external_write, C_CC,
         RETURNS(VoidTy),
         ARGS(Int8PtrTy, Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind))

FUNCTION(GetKeyPath, swift_getKeyPath, C_CC,
         RETURNS(RefCountedPtrTy),
         ARGS(Int8PtrTy, Int8PtrTy),
         ATTRS(NoUnwind))
FUNCTION(CopyKeyPathTrivialIndices, swift_copyKeyPathTrivialIndices, C_CC,
         RETURNS(VoidTy),
         ARGS(Int8PtrTy, Int8PtrTy, SizeTy),
         ATTRS(NoUnwind))

FUNCTION(GetInitializedObjCClass, swift_getInitializedObjCClass, C_CC,
         RETURNS(ObjCClassPtrTy),
         ARGS(ObjCClassPtrTy),
         ATTRS(NoUnwind))

// void swift_objc_swift3ImplicitObjCEntrypoint(id self, SEL selector)
FUNCTION(Swift3ImplicitObjCEntrypoint, swift_objc_swift3ImplicitObjCEntrypoint,
         C_CC,
         RETURNS(VoidTy),
         ARGS(ObjCPtrTy, ObjCSELTy, Int8PtrTy, SizeTy, SizeTy, SizeTy, Int8PtrTy),
         ATTRS(NoUnwind))

FUNCTION(VerifyTypeLayoutAttribute, _swift_debug_verifyTypeLayoutAttribute,
         C_CC,
         RETURNS(VoidTy),
         ARGS(TypeMetadataPtrTy, Int8PtrTy, Int8PtrTy, SizeTy, Int8PtrTy),
         ATTRS(NoUnwind))

#undef RETURNS
#undef ARGS
#undef ATTRS
#undef NO_ARGS
#undef NO_ATTRS
#undef FUNCTION
#undef FUNCTION_NAME