// RUN: %target-swift-frontend -emit-silgen %s -disable-objc-attr-requires-foundation-module | %FileCheck %s // RUN: %target-swift-frontend -emit-sil -O %s -disable-objc-attr-requires-foundation-module // RUN: %target-swift-frontend -emit-ir %s -disable-objc-attr-requires-foundation-module protocol P { func f() -> Self } protocol CP : class { func f() -> Self } class X : P, CP { required init(int i: Int) { } // CHECK-LABEL: sil hidden @_T012dynamic_self1XC1f{{[_0-9a-zA-Z]*}}F : $@convention(method) (@guaranteed X) -> @owned func f() -> Self { return self } // CHECK-LABEL: sil hidden @_T012dynamic_self1XC7factory{{[_0-9a-zA-Z]*}}FZ : $@convention(method) (Int, @thick X.Type) -> @owned X // CHECK: bb0([[I:%[0-9]+]] : $Int, [[SELF:%[0-9]+]] : $@thick X.Type): // CHECK: [[DYNAMIC_SELF:%[0-9]+]] = unchecked_trivial_bit_cast [[SELF]] : $@thick X.Type to $@thick @dynamic_self X.Type // CHECK: [[STATIC_SELF:%[0-9]+]] = upcast [[DYNAMIC_SELF]] : $@thick @dynamic_self X.Type to $@thick X.Type // CHECK: [[CTOR:%[0-9]+]] = class_method [[STATIC_SELF]] : $@thick X.Type, #X.init!allocator.1 : (X.Type) -> (Int) -> X, $@convention(method) (Int, @thick X.Type) -> @owned X // CHECK: apply [[CTOR]]([[I]], [[STATIC_SELF]]) : $@convention(method) (Int, @thick X.Type) -> @owned X class func factory(i: Int) -> Self { return self.init(int: i) } } class Y : X { required init(int i: Int) { super.init(int: i) } } class GX { func f() -> Self { return self } } class GY : GX<[T]> { } // CHECK-LABEL: sil hidden @_T012dynamic_self23testDynamicSelfDispatch{{[_0-9a-zA-Z]*}}F : $@convention(thin) (@owned Y) -> () // CHECK: bb0([[Y:%[0-9]+]] : $Y): // CHECK: [[BORROWED_Y:%.*]] = begin_borrow [[Y]] // CHECK: [[Y_COPY:%.*]] = copy_value [[BORROWED_Y]] // CHECK: [[Y_AS_X_COPY:%[0-9]+]] = upcast [[Y_COPY]] : $Y to $X // CHECK: [[X_F:%[0-9]+]] = class_method [[Y_AS_X_COPY]] : $X, #X.f!1 : (X) -> () -> @dynamic_self X, $@convention(method) (@guaranteed X) -> @owned X // => SEMANTIC SIL TODO: This argument here needs to be borrowed. // CHECK: [[X_RESULT:%[0-9]+]] = apply [[X_F]]([[Y_AS_X_COPY]]) : $@convention(method) (@guaranteed X) -> @owned X // CHECK: destroy_value [[Y_AS_X_COPY]] // CHECK: [[Y_RESULT:%[0-9]+]] = unchecked_ref_cast [[X_RESULT]] : $X to $Y // CHECK: destroy_value [[Y_RESULT]] : $Y // CHECK: end_borrow [[BORROWED_Y]] from [[Y]] // CHECK: destroy_value [[Y]] : $Y func testDynamicSelfDispatch(y: Y) { _ = y.f() } // CHECK-LABEL: sil hidden @_T012dynamic_self30testDynamicSelfDispatchGeneric{{[_0-9a-zA-Z]*}}F : $@convention(thin) (@owned GY) -> () func testDynamicSelfDispatchGeneric(gy: GY) { // CHECK: bb0([[GY:%[0-9]+]] : $GY): // CHECK: [[BORROWED_GY:%.*]] = begin_borrow [[GY]] // CHECK: [[GY_COPY:%.*]] = copy_value [[BORROWED_GY]] // CHECK: [[GY_AS_GX_COPY:%[0-9]+]] = upcast [[GY_COPY]] : $GY to $GX> // CHECK: [[GX_F:%[0-9]+]] = class_method [[GY_AS_GX_COPY]] : $GX>, #GX.f!1 : (GX) -> () -> @dynamic_self GX, $@convention(method) <τ_0_0> (@guaranteed GX<τ_0_0>) -> @owned GX<τ_0_0> // CHECK: [[GX_RESULT:%[0-9]+]] = apply [[GX_F]]<[Int]>([[GY_AS_GX_COPY]]) : $@convention(method) <τ_0_0> (@guaranteed GX<τ_0_0>) -> @owned GX<τ_0_0> // CHECK: destroy_value [[GY_AS_GX_COPY]] // CHECK: [[GY_RESULT:%[0-9]+]] = unchecked_ref_cast [[GX_RESULT]] : $GX> to $GY // CHECK: destroy_value [[GY_RESULT]] : $GY // CHECK: end_borrow [[BORROWED_GY]] from [[GY]] // CHECK: destroy_value [[GY]] _ = gy.f() } // CHECK-LABEL: sil hidden @_T012dynamic_self21testArchetypeDispatch{{[_0-9a-zA-Z]*}}F : $@convention(thin) (@in T) -> () func testArchetypeDispatch(t: T) { // CHECK: bb0([[T:%[0-9]+]] : $*T): // CHECK: [[ARCHETYPE_F:%[0-9]+]] = witness_method $T, #P.f!1 : {{.*}} : $@convention(witness_method) <τ_0_0 where τ_0_0 : P> (@in_guaranteed τ_0_0) -> @out τ_0_0 // CHECK: [[T_RESULT:%[0-9]+]] = alloc_stack $T // CHECK: [[SELF_RESULT:%[0-9]+]] = apply [[ARCHETYPE_F]]([[T_RESULT]], [[T]]) : $@convention(witness_method) <τ_0_0 where τ_0_0 : P> (@in_guaranteed τ_0_0) -> @out τ_0_0 _ = t.f() } // CHECK-LABEL: sil hidden @_T012dynamic_self23testExistentialDispatch{{[_0-9a-zA-Z]*}}F func testExistentialDispatch(p: P) { // CHECK: bb0([[P:%[0-9]+]] : $*P): // CHECK: [[PCOPY_ADDR:%[0-9]+]] = open_existential_addr immutable_access [[P]] : $*P to $*@opened([[N:".*"]]) P // CHECK: [[P_RESULT:%[0-9]+]] = alloc_stack $P // CHECK: [[P_RESULT_ADDR:%[0-9]+]] = init_existential_addr [[P_RESULT]] : $*P, $@opened([[N]]) P // CHECK: [[P_F_METHOD:%[0-9]+]] = witness_method $@opened([[N]]) P, #P.f!1 : {{.*}}, [[PCOPY_ADDR]]{{.*}} : $@convention(witness_method) <τ_0_0 where τ_0_0 : P> (@in_guaranteed τ_0_0) -> @out τ_0_0 // CHECK: apply [[P_F_METHOD]]<@opened([[N]]) P>([[P_RESULT_ADDR]], [[PCOPY_ADDR]]) : $@convention(witness_method) <τ_0_0 where τ_0_0 : P> (@in_guaranteed τ_0_0) -> @out τ_0_0 // CHECK: destroy_addr [[P_RESULT]] : $*P // CHECK: dealloc_stack [[P_RESULT]] : $*P // CHECK: destroy_addr [[P]] : $*P _ = p.f() } // CHECK-LABEL: sil hidden @_T012dynamic_self28testExistentialDispatchClass{{[_0-9a-zA-Z]*}}F : $@convention(thin) (@owned CP) -> () // CHECK: bb0([[CP:%[0-9]+]] : $CP): // CHECK: [[BORROWED_CP:%.*]] = begin_borrow [[CP]] // CHECK: [[CP_ADDR:%[0-9]+]] = open_existential_ref [[BORROWED_CP]] : $CP to $@opened([[N:".*"]]) CP // CHECK: [[CP_F:%[0-9]+]] = witness_method $@opened([[N]]) CP, #CP.f!1 : {{.*}}, [[CP_ADDR]]{{.*}} : $@convention(witness_method) <τ_0_0 where τ_0_0 : CP> (@guaranteed τ_0_0) -> @owned τ_0_0 // CHECK: [[CP_F_RESULT:%[0-9]+]] = apply [[CP_F]]<@opened([[N]]) CP>([[CP_ADDR]]) : $@convention(witness_method) <τ_0_0 where τ_0_0 : CP> (@guaranteed τ_0_0) -> @owned τ_0_0 // CHECK: [[RESULT_EXISTENTIAL:%[0-9]+]] = init_existential_ref [[CP_F_RESULT]] : $@opened([[N]]) CP : $@opened([[N]]) CP, $CP // CHECK: destroy_value [[RESULT_EXISTENTIAL]] // CHECK: end_borrow [[BORROWED_CP]] from [[CP]] // CHECK: destroy_value [[CP]] func testExistentialDispatchClass(cp: CP) { _ = cp.f() } @objc class ObjC { @objc func method() -> Self { return self } } // CHECK-LABEL: sil hidden @_T012dynamic_self21testAnyObjectDispatchys0dE0_p1o_tF : $@convention(thin) (@owned AnyObject) -> () { func testAnyObjectDispatch(o: AnyObject) { // CHECK: dynamic_method_br [[O_OBJ:%[0-9]+]] : $@opened({{.*}}) AnyObject, #ObjC.method!1.foreign, bb1, bb2 // CHECK: bb1([[METHOD:%[0-9]+]] : $@convention(objc_method) (@opened({{.*}}) AnyObject) -> @autoreleased AnyObject): // CHECK: [[O_OBJ_COPY:%.*]] = copy_value [[O_OBJ]] // CHECK: [[VAR_9:%[0-9]+]] = partial_apply [[METHOD]]([[O_OBJ_COPY]]) : $@convention(objc_method) (@opened({{.*}}) AnyObject) -> @autoreleased AnyObject var _ = o.method } // CHECK: } // end sil function '_T012dynamic_self21testAnyObjectDispatchys0dE0_p1o_tF' // Dispatch through ObjC metatypes. class ObjCInit { dynamic required init() { } } // CHECK-LABEL: sil hidden @_T012dynamic_self12testObjCInit{{[_0-9a-zA-Z]*}}F : $@convention(thin) (@thick ObjCInit.Type) -> () func testObjCInit(meta: ObjCInit.Type) { // CHECK: bb0([[THICK_META:%[0-9]+]] : $@thick ObjCInit.Type): // CHECK: [[OBJC_META:%[0-9]+]] = thick_to_objc_metatype [[THICK_META]] : $@thick ObjCInit.Type to $@objc_metatype ObjCInit.Type // CHECK: [[OBJ:%[0-9]+]] = alloc_ref_dynamic [objc] [[OBJC_META]] : $@objc_metatype ObjCInit.Type, $ObjCInit // CHECK: [[INIT:%[0-9]+]] = class_method [volatile] [[OBJ]] : $ObjCInit, #ObjCInit.init!initializer.1.foreign : (ObjCInit.Type) -> () -> ObjCInit, $@convention(objc_method) (@owned ObjCInit) -> @owned ObjCInit // CHECK: [[RESULT_OBJ:%[0-9]+]] = apply [[INIT]]([[OBJ]]) : $@convention(objc_method) (@owned ObjCInit) -> @owned ObjCInit // CHECK: [[RESULT:%[0-9]+]] = tuple () // CHECK: return [[RESULT]] : $() _ = meta.init() } class OptionalResult { func foo() -> Self? { return self } } // CHECK-LABEL: sil hidden @_T012dynamic_self14OptionalResultC3fooACXDSgyF : $@convention(method) (@guaranteed OptionalResult) -> @owned Optional { // CHECK: bb0([[SELF:%.*]] : $OptionalResult): // CHECK-NEXT: debug_value [[SELF]] : $OptionalResult // CHECK-NEXT: [[SELF_COPY:%.*]] = copy_value [[SELF]] // CHECK-NEXT: [[T0:%.*]] = enum $Optional, #Optional.some!enumelt.1, [[SELF_COPY]] : $OptionalResult // CHECK-NEXT: return [[T0]] : $Optional // CHECK: } // end sil function '_T012dynamic_self14OptionalResultC3fooACXDSgyF' class OptionalResultInheritor : OptionalResult { func bar() {} } func testOptionalResult(v : OptionalResultInheritor) { v.foo()?.bar() } // CHECK-LABEL: sil hidden @_T012dynamic_self18testOptionalResultyAA0dE9InheritorC1v_tF : $@convention(thin) (@owned OptionalResultInheritor) -> () { // CHECK: bb0([[ARG:%.*]] : $OptionalResultInheritor): // CHECK: [[BORROWED_ARG:%.*]] = begin_borrow [[ARG]] // CHECK: [[COPY_ARG:%.*]] = copy_value [[BORROWED_ARG]] // CHECK: [[CAST_COPY_ARG:%.*]] = upcast [[COPY_ARG]] // CHECK: [[T0:%.*]] = class_method [[CAST_COPY_ARG]] : $OptionalResult, #OptionalResult.foo!1 : (OptionalResult) -> () -> @dynamic_self OptionalResult?, $@convention(method) (@guaranteed OptionalResult) -> @owned Optional // CHECK-NEXT: [[RES:%.*]] = apply [[T0]]([[CAST_COPY_ARG]]) // CHECK: switch_enum [[RES]] : $Optional, case #Optional.some!enumelt.1: [[SOME_BB:bb[0-9]+]] // CHECK: [[SOME_BB]]([[T1:%.*]] : $OptionalResult): // CHECK-NEXT: [[T4:%.*]] = unchecked_ref_cast [[T1]] : $OptionalResult to $OptionalResultInheritor // CHECK-NEXT: enum $Optional, #Optional.some!enumelt.1, [[T4]] func id(_ t: T) -> T { return t } class Z { required init() {} // CHECK-LABEL: sil hidden @_T012dynamic_self1ZC23testDynamicSelfCapturesACXDSi1x_tF : $@convention(method) (Int, @guaranteed Z) -> @owned Z { func testDynamicSelfCaptures(x: Int) -> Self { // CHECK: bb0({{.*}}, [[SELF:%.*]] : $Z): // Single capture of 'self' type // CHECK: [[FN:%.*]] = function_ref @_T012dynamic_self1ZC23testDynamicSelfCapturesACXDSi1x_tFyycfU_ : $@convention(thin) (@owned Z) -> () // CHECK-NEXT: [[SELF_COPY:%.*]] = copy_value [[SELF]] : $Z // CHECK-NEXT: partial_apply [[FN]]([[SELF_COPY]]) let fn1 = { _ = self } fn1() // Capturing 'self', but it's not the last capture. Make sure it ends // up at the end of the list anyway // CHECK: [[FN:%.*]] = function_ref @_T012dynamic_self1ZC23testDynamicSelfCapturesACXDSi1x_tFyycfU0_ : $@convention(thin) (Int, @owned Z) -> () // CHECK-NEXT: [[SELF_COPY:%.*]] = copy_value [[SELF]] : $Z // CHECK-NEXT: partial_apply [[FN]]({{.*}}, [[SELF_COPY]]) let fn2 = { _ = self _ = x } fn2() // Capturing 'self' weak, so we have to pass in a metatype explicitly // so that IRGen can recover metadata. // CHECK: [[WEAK_SELF:%.*]] = alloc_box ${ var @sil_weak Optional } // CHECK: [[FN:%.*]] = function_ref @_T012dynamic_self1ZC23testDynamicSelfCapturesACXDSi1x_tFyycfU1_ : $@convention(thin) (@owned { var @sil_weak Optional }, @thick @dynamic_self Z.Type) -> () // CHECK: [[WEAK_SELF_COPY:%.*]] = copy_value [[WEAK_SELF]] : ${ var @sil_weak Optional } // CHECK-NEXT: [[DYNAMIC_SELF:%.*]] = metatype $@thick @dynamic_self Z.Type // CHECK: partial_apply [[FN]]([[WEAK_SELF_COPY]], [[DYNAMIC_SELF]]) : $@convention(thin) (@owned { var @sil_weak Optional }, @thick @dynamic_self Z.Type) -> () let fn3 = { [weak self] in _ = self } fn3() // Capturing a value with a complex type involving self // CHECK: [[FN:%.*]] = function_ref @_T012dynamic_self1ZC23testDynamicSelfCapturesACXDSi1x_tFyycfU2_ : $@convention(thin) (@owned (Z, Z), @thick @dynamic_self Z.Type) -> () let xx = (self, self) let fn4 = { _ = xx } fn4() return self } // Capturing metatype of dynamic self static func testStaticMethodDynamicSelfCaptures() -> Self { let fn0 = { _ = self; _ = { _ = self } } fn0() let x = self let fn1 = { _ = x; _ = { _ = x } } fn1() let xx = (self, self) let fn2 = { _ = xx; _ = { _ = xx } } fn2() return self.init() } // Make sure the actual self value has the same lowered type as the // substituted result of a generic function call func testDynamicSelfSubstitution(_ b: Bool) -> Self { return b ? self : id(self) } // Same for metatype of self static func testStaticMethodDynamicSelfSubstitution(_ b: Bool) -> Self { _ = (b ? self : id(self)) return self.init() } } // Unbound reference to a method returning Self. class Factory { required init() {} func newInstance() -> Self { return self } class func classNewInstance() -> Self { return self.init() } static func staticNewInstance() -> Self { return self.init() } } // CHECK-LABEL: sil hidden @_T012dynamic_self22partialApplySelfReturnyAA7FactoryC1c_ADm1ttF : $@convention(thin) (@owned Factory, @thick Factory.Type) -> () func partialApplySelfReturn(c: Factory, t: Factory.Type) { // CHECK: function_ref @_T012dynamic_self7FactoryC11newInstanceACXDyFTc : $@convention(thin) (@owned Factory) -> @owned @callee_owned () -> @owned Factory _ = c.newInstance // CHECK: function_ref @_T012dynamic_self7FactoryC11newInstanceACXDyFTc : $@convention(thin) (@owned Factory) -> @owned @callee_owned () -> @owned Factory _ = Factory.newInstance // CHECK: function_ref @_T012dynamic_self7FactoryC11newInstanceACXDyFTc : $@convention(thin) (@owned Factory) -> @owned @callee_owned () -> @owned Factory _ = t.newInstance _ = type(of: c).newInstance // CHECK: function_ref @_T012dynamic_self7FactoryC16classNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = t.classNewInstance // CHECK: function_ref @_T012dynamic_self7FactoryC16classNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = type(of: c).classNewInstance // CHECK: function_ref @_T012dynamic_self7FactoryC16classNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = Factory.classNewInstance // CHECK: function_ref @_T012dynamic_self7FactoryC17staticNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = t.staticNewInstance // CHECK: function_ref @_T012dynamic_self7FactoryC17staticNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = type(of: c).staticNewInstance // CHECK: function_ref @_T012dynamic_self7FactoryC17staticNewInstanceACXDyFZTc : $@convention(thin) (@thick Factory.Type) -> @owned @callee_owned () -> @owned Factory _ = Factory.staticNewInstance } class FactoryFactory { // CHECK-LABEL: sil hidden @_T012dynamic_self07FactoryC0C11newInstanceACXDyFZ : $@convention(method) (@thick FactoryFactory.Type) -> @owned FactoryFactory static func newInstance() -> Self { // CHECK: bb0(%0 : $@thick FactoryFactory.Type): // CHECK: [[DYNAMIC_SELF:%.*]] = unchecked_trivial_bit_cast %0 : $@thick FactoryFactory.Type to $@thick @dynamic_self FactoryFactory.Type // CHECK: [[METATYPE:%.*]] = value_metatype $@thick @dynamic_self FactoryFactory.Type.Type, [[DYNAMIC_SELF]] : $@thick @dynamic_self FactoryFactory.Type // CHECK: [[ANY:%.*]] = init_existential_metatype [[METATYPE]] : $@thick @dynamic_self FactoryFactory.Type.Type, $@thick Any.Type let _: Any.Type = type(of: self) while true {} } } // Super call to a method returning Self class Base { required init() {} func returnsSelf() -> Self { return self } static func returnsSelfStatic() -> Self { return self.init() } } class Derived : Base { // CHECK-LABEL: sil hidden @_T012dynamic_self7DerivedC9superCallyyF : $@convention(method) (@guaranteed Derived) -> () // CHECK: [[SELF:%.*]] = copy_value %0 // CHECK: [[SUPER:%.*]] = upcast [[SELF]] : $Derived to $Base // CHECK: [[METHOD:%.*]] = function_ref @_T012dynamic_self4BaseC11returnsSelfACXDyF // CHECK: apply [[METHOD]]([[SUPER]]) // CHECK: return func superCall() { _ = super.returnsSelf() } // CHECK-LABEL: sil hidden @_T012dynamic_self7DerivedC15superCallStaticyyFZ : $@convention(method) (@thick Derived.Type) -> () // CHECK: [[SUPER:%.*]] = upcast %0 : $@thick Derived.Type to $@thick Base.Type // CHECK: [[METHOD:%.*]] = function_ref @_T012dynamic_self4BaseC17returnsSelfStaticACXDyFZ // CHECK: apply [[METHOD]]([[SUPER]]) // CHECK: return static func superCallStatic() { _ = super.returnsSelfStatic() } // CHECK-LABEL: sil hidden @_T012dynamic_self7DerivedC32superCallFromMethodReturningSelfACXDyF : $@convention(method) (@guaranteed Derived) -> @owned Derived // CHECK: [[SELF:%.*]] = copy_value %0 // CHECK: [[SUPER:%.*]] = upcast [[SELF]] : $Derived to $Base // CHECK: [[METHOD:%.*]] = function_ref @_T012dynamic_self4BaseC11returnsSelfACXDyF // CHECK: apply [[METHOD]]([[SUPER]]) // CHECK: return func superCallFromMethodReturningSelf() -> Self { _ = super.returnsSelf() return self } // CHECK-LABEL: sil hidden @_T012dynamic_self7DerivedC38superCallFromMethodReturningSelfStaticACXDyFZ : $@convention(method) (@thick Derived.Type) -> @owned Derived // CHECK; [[DYNAMIC_SELF:%.*]] = unchecked_trivial_bit_cast %0 : $@thick Derived.Type to $@thick @synamic_self Derived.Type // CHECK: [[SUPER:%.*]] = upcast [[DYNAMIC_SELF]] : $@thick @dynamic_self Derived.Type to $@thick Base.Type // CHECK: [[METHOD:%.*]] = function_ref @_T012dynamic_self4BaseC17returnsSelfStaticACXDyFZ // CHECK: apply [[METHOD]]([[SUPER]]) // CHECK: return static func superCallFromMethodReturningSelfStatic() -> Self { _ = super.returnsSelfStatic() return self.init() } } // CHECK-LABEL: sil_witness_table hidden X: P module dynamic_self { // CHECK: method #P.f!1: {{.*}} : @_T012dynamic_self1XCAA1PA2aDP1f{{[_0-9a-zA-Z]*}}FTW // CHECK-LABEL: sil_witness_table hidden X: CP module dynamic_self { // CHECK: method #CP.f!1: {{.*}} : @_T012dynamic_self1XCAA2CPA2aDP1f{{[_0-9a-zA-Z]*}}FTW