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objc_dealloc.swift
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// RUN: %target-swift-frontend -sdk %S/Inputs -I %S/Inputs -enable-source-import %s -emit-silgen | %FileCheck %s
// REQUIRES: objc_interop
import gizmo
class X { }
func onDestruct() { }
@requires_stored_property_inits
class SwiftGizmo : Gizmo {
var x = X()
// CHECK-LABEL: sil hidden [transparent] @_TIvC12objc_dealloc10SwiftGizmo1xCS_1Xi : $@convention(thin) () -> @owned X
// CHECK: [[FN:%.*]] = function_ref @_TFC12objc_dealloc1XCfT_S0_ : $@convention(method) (@thick X.Type) -> @owned X
// CHECK-NEXT: [[METATYPE:%.*]] = metatype $@thick X.Type
// CHECK-NEXT: [[RESULT:%.*]] = apply [[FN]]([[METATYPE]]) : $@convention(method) (@thick X.Type) -> @owned X
// CHECK-NEXT: return [[RESULT]] : $X
// CHECK-LABEL: sil hidden @_TFC12objc_dealloc10SwiftGizmoc
// CHECK: bb0([[SELF_PARAM:%[0-9]+]] : $SwiftGizmo):
override init() {
// CHECK: [[SELF_UNINIT:%[0-9]+]] = mark_uninitialized [derivedselfonly]
// CHECK-NOT: ref_element_addr
// CHECK: upcast
// CHECK-NEXT: super_method
// CHECK: return
super.init()
}
// CHECK-LABEL: sil hidden @_TFC12objc_dealloc10SwiftGizmoD : $@convention(method) (@owned SwiftGizmo) -> ()
deinit {
// CHECK: bb0([[SELF:%[0-9]+]] : $SwiftGizmo):
// Call onDestruct()
// CHECK: [[ONDESTRUCT_REF:%[0-9]+]] = function_ref @_TF12objc_dealloc10onDestructFT_T_ : $@convention(thin) () -> ()
// CHECK: [[ONDESTRUCT_RESULT:%[0-9]+]] = apply [[ONDESTRUCT_REF]]() : $@convention(thin) () -> ()
onDestruct()
// Note: don't destroy instance variables
// CHECK-NOT: ref_element_addr
// Call super -dealloc.
// CHECK: [[SUPER_DEALLOC:%[0-9]+]] = super_method [[SELF]] : $SwiftGizmo, #Gizmo.deinit!deallocator.foreign : (Gizmo) -> () -> () , $@convention(objc_method) (Gizmo) -> ()
// CHECK: [[SUPER:%[0-9]+]] = upcast [[SELF]] : $SwiftGizmo to $Gizmo
// CHECK: [[SUPER_DEALLOC_RESULT:%[0-9]+]] = apply [[SUPER_DEALLOC]]([[SUPER]]) : $@convention(objc_method) (Gizmo) -> ()
// CHECK: [[RESULT:%[0-9]+]] = tuple ()
// CHECK: return [[RESULT]] : $()
}
// Objective-C deallocation deinit thunk (i.e., -dealloc).
// CHECK-LABEL: sil hidden [thunk] @_TToFC12objc_dealloc10SwiftGizmoD : $@convention(objc_method) (SwiftGizmo) -> ()
// CHECK: bb0([[SELF:%[0-9]+]] : $SwiftGizmo):
// CHECK: [[SELF_COPY:%.*]] = copy_value [[SELF]]
// CHECK: [[GIZMO_DTOR:%[0-9]+]] = function_ref @_TFC12objc_dealloc10SwiftGizmoD : $@convention(method) (@owned SwiftGizmo) -> ()
// CHECK: [[RESULT:%[0-9]+]] = apply [[GIZMO_DTOR]]([[SELF_COPY]]) : $@convention(method) (@owned SwiftGizmo) -> ()
// CHECK: return [[RESULT]] : $()
// Objective-C IVar initializer (i.e., -.cxx_construct)
// CHECK-LABEL: sil hidden @_TToFC12objc_dealloc10SwiftGizmoe : $@convention(objc_method) (@owned SwiftGizmo) -> @owned SwiftGizmo
// CHECK: bb0([[SELF_PARAM:%[0-9]+]] : $SwiftGizmo):
// CHECK-NEXT: debug_value [[SELF_PARAM]] : $SwiftGizmo, let, name "self"
// CHECK-NEXT: [[SELF:%[0-9]+]] = mark_uninitialized [rootself] [[SELF_PARAM]] : $SwiftGizmo
// CHECK: [[XINIT:%[0-9]+]] = function_ref @_TIvC12objc_dealloc10SwiftGizmo1xCS_1Xi
// CHECK-NEXT: [[XOBJ:%[0-9]+]] = apply [[XINIT]]() : $@convention(thin) () -> @owned X
// CHECK-NEXT: [[X:%[0-9]+]] = ref_element_addr [[SELF]] : $SwiftGizmo, #SwiftGizmo.x
// CHECK-NEXT: assign [[XOBJ]] to [[X]] : $*X
// CHECK-NEXT: return [[SELF]] : $SwiftGizmo
// Objective-C IVar destroyer (i.e., -.cxx_destruct)
// CHECK-LABEL: sil hidden @_TToFC12objc_dealloc10SwiftGizmoE : $@convention(objc_method) (SwiftGizmo) -> ()
// CHECK: bb0([[SELF:%[0-9]+]] : $SwiftGizmo):
// CHECK-NEXT: debug_value [[SELF]] : $SwiftGizmo, let, name "self"
// CHECK-NEXT: [[X:%[0-9]+]] = ref_element_addr [[SELF]] : $SwiftGizmo, #SwiftGizmo.x
// CHECK-NEXT: destroy_addr [[X]] : $*X
// CHECK-NEXT: [[RESULT:%[0-9]+]] = tuple ()
// CHECK-NEXT: return [[RESULT]] : $()
}
// CHECK-NOT: sil hidden [thunk] @_TToFCSo11SwiftGizmo2E : $@convention(objc_method) (SwiftGizmo2) -> ()
class SwiftGizmo2 : Gizmo {
}