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f7264e327f
swift_coroFrameAlloc was introduced in the Swift 6.2 runtime. Give it the appropriate availability in IRGen, so that it gets weak availability when needed (per the deployment target). Then, only create the stub function for calling into swift_coroFrameAlloc or malloc (when the former isn't available) when we're back-deploying to a runtime prior to Swift 6.2. This is a small code size/performance win when allocating coroutine frames on Swift 6.2-or-newer platforms. This has a side effect of fixing a bug in Embedded Swift, where the swift_coroFrameAlloc was getting unconditionally set to have weak external linkage despite behind defined in the same LLVM module (because it comes from the standard library). Fixes rdar://149695139 / issue #80947.
95 lines
3.9 KiB
C++
95 lines
3.9 KiB
C++
//===--- FeatureAvailability.def - Availability Metaprogramming -*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines macros used for macro-metaprogramming with feature
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// availability.
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//
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//===----------------------------------------------------------------------===//
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/// FEATURE(N, V)
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/// N - The name of the feature (in UpperCamelCase).
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/// V - The Swift version number, as a tuple, or FUTURE.
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///
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/// The feature Foo turns into two methods on ASTContext:
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/// getFooRuntimeAvailability(), which returns the exact version provided
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/// here, and getFooAvailability(), which maps that version into a version
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/// of the target OS. Because both of these methods exist, it is a bad idea
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/// to use a feature name that ends in "Runtime", or people might get very
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/// confused.
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#ifndef FEATURE
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#define FEATURE(N, V)
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#endif
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/// FUTURE
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///
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/// The version to use for future support.
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#ifndef FUTURE
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#define FUTURE (99, 99)
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#endif
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FEATURE(ObjCMetadataUpdateCallback, (5, 0))
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FEATURE(ObjCGetClassHook, (5, 0))
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FEATURE(OpaqueType, (5, 1))
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FEATURE(ObjCClassStubs, (5, 1))
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FEATURE(BackDeployedConcurrency, (5, 1))
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FEATURE(TypesInAbstractMetadataState, (5, 2))
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FEATURE(PrespecializedGenericMetadata, (5, 4))
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FEATURE(CompareTypeContextDescriptors, (5, 4))
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FEATURE(CompareProtocolConformanceDescriptors, (5, 4))
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FEATURE(IntermodulePrespecializedGenericMetadata, (5, 4))
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FEATURE(Concurrency, (5, 5))
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FEATURE(MultiPayloadEnumTagSinglePayload, (5, 6))
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FEATURE(ObjCIsUniquelyReferenced, (5, 6))
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// Metadata and casting support for parameterized existential types
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FEATURE(ParameterizedExistential, (5, 7))
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FEATURE(VariadicGenericType, (5, 9))
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FEATURE(SignedConformsToProtocol, (5, 9))
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FEATURE(ConcurrencyDiscardingTaskGroup, (5, 9))
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FEATURE(ConcurrencyDistributedActorWithCustomExecutor, (5, 9))
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FEATURE(SignedDescriptor, (5, 9))
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FEATURE(ObjCSymbolicReferences, (6, 0))
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FEATURE(TypedThrows, (6, 0))
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FEATURE(StaticReadOnlyArrays, (6, 0))
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FEATURE(SwiftExceptionPersonality, (6, 0))
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// Metadata support for @isolated(any) function types
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FEATURE(IsolatedAny, (6, 0))
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FEATURE(NoncopyableGenerics, (6, 0))
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FEATURE(InitRawStructMetadata, (6, 0))
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FEATURE(LayoutStringValueWitnesses, (6, 1))
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FEATURE(CreateTaskWithConsumedFunction, (6, 1))
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FEATURE(IsolatedDeinit, (6, 1))
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FEATURE(ValueGenericType, (6, 2))
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FEATURE(InitRawStructMetadata2, (6, 2))
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FEATURE(CustomGlobalExecutors, (6, 2))
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FEATURE(TaskExecutor, (6, 2))
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FEATURE(TypedCoroAlloc, (6, 2))
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FEATURE(Differentiation, FUTURE)
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FEATURE(ClearSensitive, FUTURE)
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FEATURE(UpdatePureObjCClassMetadata, FUTURE)
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// TODO: CoroutineAccessors: Change to correct version number.
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FEATURE(CoroutineAccessors, FUTURE)
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#undef FEATURE
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#undef FUTURE
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