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c949e6295f
Parameters of generic type need to be treated as potentially addressable-for-dependencies, but we don't want callers using the generic function with concrete types that are known not to be addressable-for- dependencies to be overconstrained. In SILFunctionType lowering, lower these dependencies distinctly as conditionally addressable, meaning that the dependency on an argument depends on whether the concrete type of that argument is (potentially) addressable-for-dependencies or not.
44 lines
1.5 KiB
Swift
44 lines
1.5 KiB
Swift
// RUN: %target-swift-frontend %s -emit-sil \
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// RUN: -enable-experimental-feature LifetimeDependence \
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// RUN: -enable-experimental-feature SuppressedAssociatedTypes \
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// RUN: | %FileCheck %s
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// REQUIRES: swift_in_compiler
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// REQUIRES: swift_feature_LifetimeDependence
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// REQUIRES: swift_feature_SuppressedAssociatedTypes
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protocol P {
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associatedtype E: ~Escapable
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@lifetime(borrow self)
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borrowing func getE() -> E
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}
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extension P {
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@lifetime(borrow self)
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borrowing func getDefault() -> E {
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return getE()
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}
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}
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public struct View: ~Escapable {
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@lifetime(immortal)
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init() { }
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}
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public struct PView: P {
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@lifetime(immortal)
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borrowing func getE() -> View { return View() }
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}
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public func test(pview: borrowing PView) -> View {
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return pview.getDefault()
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}
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// CHECK-LABEL: sil hidden @$s28lifetime_dependence_generics1PPAAE10getDefault1EQzyF : $@convention(method) <Self where Self : P> (@in_guaranteed Self) -> @lifetime(borrow address_for_deps 0) @out Self.E {
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// CHECK-LABEL: sil hidden @$s28lifetime_dependence_generics5PViewV4getEAA4ViewVyF : $@convention(method) (PView) -> @lifetime(immortal) @owned View {
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// CHECK-LABEL: sil private [transparent] [thunk] @$s28lifetime_dependence_generics5PViewVAA1PA2aDP4getE1EQzyFTW : $@convention(witness_method: P) (@in_guaranteed PView) -> @lifetime(borrow 0) @out View {
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// CHECK-LABEL: sil @$s28lifetime_dependence_generics4test5pviewAA4ViewVAA5PViewV_tF : $@convention(thin) (PView) -> @lifetime(borrow 0) @owned View {
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