| // RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s |
| |
| func takeClosure(_ fn: () -> Int) {} |
| |
| class C { |
| func f() -> Int { return 42 } |
| } |
| |
| struct A { |
| unowned var x: C |
| } |
| _ = A(x: C()) |
| // CHECK-LABEL: sil hidden @_T07unowned1AV{{[_0-9a-zA-Z]*}}fC |
| // CHECK: bb0([[X:%.*]] : $C, %1 : $@thin A.Type): |
| // CHECK: [[X_UNOWNED:%.*]] = ref_to_unowned [[X]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[X_UNOWNED]] |
| // CHECK: destroy_value [[X]] |
| // CHECK: [[A:%.*]] = struct $A ([[X_UNOWNED]] : $@sil_unowned C) |
| // CHECK: return [[A]] |
| // CHECK: } |
| |
| protocol P {} |
| struct X: P {} |
| |
| struct AddressOnly { |
| unowned var x: C |
| var p: P |
| } |
| _ = AddressOnly(x: C(), p: X()) |
| // CHECK-LABEL: sil hidden @_T07unowned11AddressOnlyV{{[_0-9a-zA-Z]*}}fC |
| // CHECK: bb0([[RET:%.*]] : $*AddressOnly, [[X:%.*]] : $C, {{.*}}): |
| // CHECK: [[X_ADDR:%.*]] = struct_element_addr [[RET]] : $*AddressOnly, #AddressOnly.x |
| // CHECK: [[X_UNOWNED:%.*]] = ref_to_unowned [[X]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[X_UNOWNED]] : $@sil_unowned C |
| // CHECK: store [[X_UNOWNED]] to [init] [[X_ADDR]] |
| // CHECK: destroy_value [[X]] |
| // CHECK: } |
| |
| // CHECK-LABEL: sil hidden @_T07unowned5test0yAA1CC1c_tF : $@convention(thin) (@owned C) -> () { |
| func test0(c c: C) { |
| // CHECK: bb0([[ARG:%.*]] : $C): |
| |
| var a: A |
| // CHECK: [[A1:%.*]] = alloc_box ${ var A }, var, name "a" |
| // CHECK: [[MARKED_A1:%.*]] = mark_uninitialized [var] [[A1]] |
| // CHECK: [[PBA:%.*]] = project_box [[MARKED_A1]] |
| |
| unowned var x = c |
| // CHECK: [[X:%.*]] = alloc_box ${ var @sil_unowned C } |
| // CHECK: [[PBX:%.*]] = project_box [[X]] |
| // CHECK: [[BORROWED_ARG:%.*]] = begin_borrow [[ARG]] |
| // CHECK: [[ARG_COPY:%.*]] = copy_value [[BORROWED_ARG]] |
| // CHECK: [[T2:%.*]] = ref_to_unowned [[ARG_COPY]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[T2]] : $@sil_unowned C |
| // CHECK: store [[T2]] to [init] [[PBX]] : $*@sil_unowned C |
| // CHECK: destroy_value [[ARG_COPY]] |
| // CHECK: end_borrow [[BORROWED_ARG]] from [[ARG]] |
| |
| a.x = c |
| // CHECK: [[BORROWED_ARG:%.*]] = begin_borrow [[ARG]] |
| // CHECK: [[ARG_COPY:%.*]] = copy_value [[BORROWED_ARG]] |
| // CHECK: [[WRITE:%.*]] = begin_access [modify] [unknown] [[PBA]] |
| // CHECK: [[T1:%.*]] = struct_element_addr [[WRITE]] : $*A, #A.x |
| // CHECK: [[T2:%.*]] = ref_to_unowned [[ARG_COPY]] : $C |
| // CHECK: unowned_retain [[T2]] : $@sil_unowned C |
| // CHECK: assign [[T2]] to [[T1]] : $*@sil_unowned C |
| // CHECK: destroy_value [[ARG_COPY]] |
| // CHECK: end_borrow [[BORROWED_ARG]] from [[ARG]] |
| |
| a.x = x |
| // CHECK: [[READ:%.*]] = begin_access [read] [unknown] [[PBX]] |
| // CHECK: [[T2:%.*]] = load [take] [[READ]] : $*@sil_unowned C |
| // CHECK: strong_retain_unowned [[T2]] : $@sil_unowned C |
| // CHECK: [[T3:%.*]] = unowned_to_ref [[T2]] : $@sil_unowned C to $C |
| // CHECK: [[WRITE:%.*]] = begin_access [modify] [unknown] [[PBA]] |
| // CHECK: [[XP:%.*]] = struct_element_addr [[WRITE]] : $*A, #A.x |
| // CHECK: [[T4:%.*]] = ref_to_unowned [[T3]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[T4]] : $@sil_unowned C |
| // CHECK: assign [[T4]] to [[XP]] : $*@sil_unowned C |
| // CHECK: destroy_value [[T3]] : $C |
| // CHECK: destroy_value [[X]] |
| // CHECK: destroy_value [[MARKED_A1]] |
| // CHECK: destroy_value [[ARG]] |
| } |
| // CHECK: } // end sil function '_T07unowned5test0yAA1CC1c_tF' |
| |
| // CHECK-LABEL: sil hidden @{{.*}}testunowned_local |
| func testunowned_local() -> C { |
| // CHECK: [[C:%.*]] = apply |
| let c = C() |
| |
| // CHECK: [[UC:%.*]] = alloc_box ${ var @sil_unowned C }, let, name "uc" |
| // CHECK: [[PB_UC:%.*]] = project_box [[UC]] |
| // CHECK: [[BORROWED_C:%.*]] = begin_borrow [[C]] |
| // CHECK: [[C_COPY:%.*]] = copy_value [[BORROWED_C]] |
| // CHECK: [[tmp1:%.*]] = ref_to_unowned [[C_COPY]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[tmp1]] |
| // CHECK: store [[tmp1]] to [init] [[PB_UC]] |
| // CHECK: destroy_value [[C_COPY]] |
| // CHECK: end_borrow [[BORROWED_C]] from [[C]] |
| unowned let uc = c |
| |
| // CHECK: [[tmp2:%.*]] = load [take] [[PB_UC]] |
| // CHECK: strong_retain_unowned [[tmp2]] |
| // CHECK: [[tmp3:%.*]] = unowned_to_ref [[tmp2]] |
| return uc |
| |
| // CHECK: destroy_value [[UC]] |
| // CHECK: destroy_value [[C]] |
| // CHECK: return [[tmp3]] |
| } |
| |
| // <rdar://problem/16877510> capturing an unowned let crashes in silgen |
| func test_unowned_let_capture(_ aC : C) { |
| unowned let bC = aC |
| takeClosure { bC.f() } |
| } |
| |
| // CHECK-LABEL: sil private @_T07unowned05test_A12_let_captureyAA1CCFSiycfU_ : $@convention(thin) (@owned @sil_unowned C) -> Int { |
| // CHECK: bb0([[ARG:%.*]] : $@sil_unowned C): |
| // CHECK-NEXT: debug_value %0 : $@sil_unowned C, let, name "bC", argno 1 |
| // CHECK-NEXT: strong_retain_unowned [[ARG]] : $@sil_unowned C |
| // CHECK-NEXT: [[UNOWNED_ARG:%.*]] = unowned_to_ref [[ARG]] : $@sil_unowned C to $C |
| // CHECK-NEXT: [[FUN:%.*]] = class_method [[UNOWNED_ARG]] : $C, #C.f!1 : (C) -> () -> Int, $@convention(method) (@guaranteed C) -> Int |
| // CHECK-NEXT: [[RESULT:%.*]] = apply [[FUN]]([[UNOWNED_ARG]]) : $@convention(method) (@guaranteed C) -> Int |
| // CHECK-NEXT: destroy_value [[UNOWNED_ARG]] |
| // CHECK-NEXT: destroy_value [[ARG]] : $@sil_unowned C |
| // CHECK-NEXT: return [[RESULT]] : $Int |
| |
| |
| |
| // <rdar://problem/16880044> unowned let properties don't work as struct and class members |
| class TestUnownedMember { |
| unowned let member : C |
| init(inval: C) { |
| self.member = inval |
| } |
| } |
| |
| // CHECK-LABEL: sil hidden @_T07unowned17TestUnownedMemberCAcA1CC5inval_tcfc : |
| // CHECK: bb0([[ARG1:%.*]] : $C, [[SELF_PARAM:%.*]] : $TestUnownedMember): |
| // CHECK: [[SELF:%.*]] = mark_uninitialized [rootself] [[SELF_PARAM]] : $TestUnownedMember |
| // CHECK: [[BORROWED_SELF:%.*]] = begin_borrow [[SELF]] |
| // CHECK: [[BORROWED_ARG1:%.*]] = begin_borrow [[ARG1]] |
| // CHECK: [[ARG1_COPY:%.*]] = copy_value [[BORROWED_ARG1]] |
| // CHECK: [[FIELDPTR:%.*]] = ref_element_addr [[BORROWED_SELF]] : $TestUnownedMember, #TestUnownedMember.member |
| // CHECK: [[WRITE:%.*]] = begin_access [modify] [dynamic] [[FIELDPTR]] : $*@sil_unowned C |
| // CHECK: [[INVAL:%.*]] = ref_to_unowned [[ARG1_COPY]] : $C to $@sil_unowned C |
| // CHECK: unowned_retain [[INVAL]] : $@sil_unowned C |
| // CHECK: assign [[INVAL]] to [[WRITE]] : $*@sil_unowned C |
| // CHECK: destroy_value [[ARG1_COPY]] : $C |
| // CHECK: end_borrow [[BORROWED_ARG1]] from [[ARG1]] |
| // CHECK: end_borrow [[BORROWED_SELF]] from [[SELF]] |
| // CHECK: [[RET_SELF:%.*]] = copy_value [[SELF]] |
| // CHECK: destroy_value [[SELF]] |
| // CHECK: destroy_value [[ARG1]] |
| // CHECK: return [[RET_SELF]] : $TestUnownedMember |
| // CHECK: } // end sil function '_T07unowned17TestUnownedMemberCAcA1CC5inval_tcfc' |
| |
| // Just verify that lowering an unowned reference to a type parameter |
| // doesn't explode. |
| struct Unowned<T: AnyObject> { |
| unowned var object: T |
| } |
| func takesUnownedStruct(_ z: Unowned<C>) {} |
| // CHECK-LABEL: sil hidden @_T07unowned18takesUnownedStructyAA0C0VyAA1CCGF : $@convention(thin) (@owned Unowned<C>) -> () |