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6a020f8f15
The main point of this change is to make sure that a shared function always has a body: both, in the optimizer pipeline and in the swiftmodule file. This is important because the compiler always needs to emit code for a shared function. Shared functions cannot be referenced from outside the module. In several corner cases we missed to maintain this invariant which resulted in unresolved-symbol linker errors. As side-effect of this change we can drop the shared_external SIL linkage and the IsSerializable flag, which simplifies the serialization and linkage concept.
41 lines
1.5 KiB
Swift
41 lines
1.5 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -emit-module -O -module-name Swift -module-link-name swiftCore -parse-as-library -parse-stdlib -emit-module %s -o %t/Swift.swiftmodule -enable-ossa-modules
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// RUN: %target-sil-opt -enable-sil-verify-all %t/Swift.swiftmodule -emit-sorted-sil -o - | %FileCheck %s
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// Test that early serialization works as expected:
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// - it happens before the performance inlining and thus preserves @_semantics functions
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// - it happens after generic specialization
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@frozen
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public struct Int {
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@inlinable
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public init() {}
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}
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@frozen
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public struct Array<T> {
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@inlinable
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public init() {}
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// Check that the generic version of a @_semantics function is preserved.
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// CHECK: sil [serialized] [_semantics "array.get_capacity"] [canonical] [ossa] @$sSa12_getCapacitySiyF : $@convention(method) <T> (Array<T>) -> Int
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@inlinable
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@usableFromInline
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@_semantics("array.get_capacity")
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internal func _getCapacity() -> Int {
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return Int()
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}
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}
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// Check that a specialized version of a function is produced
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// CHECK: sil shared [serialized] [_semantics "array.get_capacity"] [canonical] [ossa] @$sSa12_getCapacitySiyFSi_Tgq5 : $@convention(method) (Array<Int>) -> Int
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// Check that a call of a @_semantics function was not inlined if early-serialization is enabled.
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// CHECK: sil [serialized] [canonical] [ossa] @$ss28userOfSemanticsAnnotatedFuncySiSaySiGF
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// CHECK: function_ref
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// CHECK: apply
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@inlinable
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public func userOfSemanticsAnnotatedFunc(_ a: Array<Int>) -> Int {
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return a._getCapacity()
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}
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