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80 lines
3.5 KiB
Swift
80 lines
3.5 KiB
Swift
// RUN: %target-swift-frontend -emit-sil -enable-sil-ownership -disable-objc-attr-requires-foundation-module %s | %FileCheck %s
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// FIXME: This needs more tests
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@objc protocol P3 {
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init?(p3: Int64)
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}
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extension P3 {
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// CHECK-LABEL: sil hidden @_T040definite_init_failable_initializers_objc2P3PAAE3p3aSQyxGs5Int64V_tcfC : $@convention(method) <Self where Self : P3> (Int64, @thick Self.Type) -> @owned Optional<Self>
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init!(p3a: Int64) {
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self.init(p3: p3a)! // unnecessary-but-correct '!'
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}
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// CHECK-LABEL: sil hidden @_T040definite_init_failable_initializers_objc2P3PAAE3p3bxs5Int64V_tcfC : $@convention(method) <Self where Self : P3> (Int64, @thick Self.Type) -> @owned Self
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init(p3b: Int64) {
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self.init(p3: p3b)! // necessary '!'
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}
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}
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class LifetimeTracked {
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init(_: Int) {}
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}
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class FakeNSObject {
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@objc dynamic init() {}
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}
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class Cat : FakeNSObject {
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let x: LifetimeTracked
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// CHECK-LABEL: sil hidden @_T040definite_init_failable_initializers_objc3CatC1n5afterACSgSi_Sbtcfc : $@convention(method) (Int, Bool, @owned Cat) -> @owned Optional<Cat>
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// CHECK: bb0(%0 : $Int, %1 : $Bool, %2 : $Cat):
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// CHECK-NEXT: [[SELF_BOX:%.*]] = alloc_stack $Cat
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// CHECK: store %2 to [[SELF_BOX]] : $*Cat
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// CHECK: [[FIELD_ADDR:%.*]] = ref_element_addr %2 : $Cat, #Cat.x
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// CHECK-NEXT: [[ACCESS:%.*]] = begin_access [modify] [dynamic] %12 : $*LifetimeTracked
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// CHECK-NEXT: store {{%.*}} to [[ACCESS]] : $*LifetimeTracked
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// CHECK-NEXT: end_access [[ACCESS]] : $*LifetimeTracked
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// CHECK-NEXT: [[COND:%.*]] = struct_extract %1 : $Bool, #Bool._value
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// CHECK-NEXT: cond_br [[COND]], bb1, bb2
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// CHECK: bb1:
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// CHECK-NEXT: br bb3
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// CHECK: bb2:
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// CHECK-NEXT: [[SUPER:%.*]] = upcast %2 : $Cat to $FakeNSObject
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// CHECK-NEXT: [[SUB:%.*]] = unchecked_ref_cast [[SUPER]] : $FakeNSObject to $Cat
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// CHECK-NEXT: [[SUPER_FN:%.*]] = objc_super_method %20 : $Cat, #FakeNSObject.init!initializer.1.foreign : (FakeNSObject.Type) -> () -> FakeNSObject, $@convention(objc_method) (@owned FakeNSObject) -> @owned FakeNSObject
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// CHECK-NEXT: [[NEW_SUPER_SELF:%.*]] = apply [[SUPER_FN]]([[SUPER]]) : $@convention(objc_method) (@owned FakeNSObject) -> @owned FakeNSObject
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// CHECK-NEXT: [[NEW_SELF:%.*]] = unchecked_ref_cast [[NEW_SUPER_SELF]] : $FakeNSObject to $Cat
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// CHECK-NEXT: store [[NEW_SELF]] to [[SELF_BOX]] : $*Cat
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// TODO: Once we re-enable arbitrary take promotion, this retain and the associated destroy_addr will go away.
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// CHECK-NEXT: strong_retain [[NEW_SELF]]
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// CHECK-NEXT: [[RESULT:%.*]] = enum $Optional<Cat>, #Optional.some!enumelt.1, [[NEW_SELF]] : $Cat
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// CHECK-NEXT: destroy_addr [[SELF_BOX]]
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// CHECK-NEXT: dealloc_stack [[SELF_BOX]] : $*Cat
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// CHECK-NEXT: br bb4([[RESULT]] : $Optional<Cat>)
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// CHECK: bb3:
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// CHECK-NEXT: [[FIELD_ADDR:%.*]] = ref_element_addr %2 : $Cat, #Cat.x
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// CHECK-NEXT: destroy_addr [[FIELD_ADDR]] : $*LifetimeTracked
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// CHECK-NEXT: [[METATYPE:%.*]] = metatype $@thick Cat.Type
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// CHECK-NEXT: dealloc_partial_ref %2 : $Cat, [[METATYPE]] : $@thick Cat.Type
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// CHECK-NEXT: dealloc_stack [[SELF_BOX]] : $*Cat
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// CHECK-NEXT: [[RESULT:%.*]] = enum $Optional<Cat>, #Optional.none!enumelt
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// CHECK-NEXT: br bb4([[RESULT]] : $Optional<Cat>)
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// CHECK: bb4([[RESULT:%.*]] : $Optional<Cat>):
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// CHECK-NEXT: return [[RESULT]] : $Optional<Cat>
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init?(n: Int, after: Bool) {
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self.x = LifetimeTracked(0)
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if after {
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return nil
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}
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super.init()
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}
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}
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