| // RUN: %target-swift-frontend -emit-silgen -enable-sil-ownership %s | %FileCheck %s |
| |
| func foo(f f: (() -> ())!) { |
| var f: (() -> ())! = f |
| f?() |
| } |
| // CHECK: sil hidden @{{.*}}foo{{.*}} : $@convention(thin) (@owned Optional<@callee_guaranteed () -> ()>) -> () { |
| // CHECK: bb0([[T0:%.*]] : @owned $Optional<@callee_guaranteed () -> ()>): |
| // CHECK: [[F:%.*]] = alloc_box ${ var Optional<@callee_guaranteed () -> ()> } |
| // CHECK: [[PF:%.*]] = project_box [[F]] |
| // CHECK: [[BORROWED_T0:%.*]] = begin_borrow [[T0]] |
| // CHECK: [[T0_COPY:%.*]] = copy_value [[BORROWED_T0]] |
| // CHECK: store [[T0_COPY]] to [init] [[PF]] |
| // CHECK: end_borrow [[BORROWED_T0]] from [[T0]] |
| // CHECK: [[READ:%.*]] = begin_access [read] [unknown] [[PF]] : $*Optional<@callee_guaranteed () -> ()> |
| // CHECK: [[T1:%.*]] = select_enum_addr [[READ]] |
| // CHECK: cond_br [[T1]], bb2, bb1 |
| // If it does, project and load the value out of the implicitly unwrapped |
| // optional... |
| // CHECK: bb2: |
| // CHECK-NEXT: [[FN0_ADDR:%.*]] = unchecked_take_enum_data_addr [[READ]] |
| // CHECK-NEXT: [[FN0:%.*]] = load [copy] [[FN0_ADDR]] |
| // .... then call it |
| // CHECK: [[B:%.*]] = begin_borrow [[FN0]] |
| // CHECK: apply [[B]]() : $@callee_guaranteed () -> () |
| // CHECK: end_borrow [[B]] |
| // CHECK: br bb3 |
| // CHECK: bb3( |
| // CHECK: destroy_value [[F]] |
| // CHECK: destroy_value [[T0]] |
| // CHECK: return |
| // CHECK: bb4: |
| // CHECK: enum $Optional<()>, #Optional.none!enumelt |
| // CHECK: br bb3 |
| // The rest of this is tested in optional.swift |
| // } // end sil function '{{.*}}foo{{.*}}' |
| |
| func wrap<T>(x x: T) -> T! { return x } |
| |
| // CHECK-LABEL: sil hidden @_T029implicitly_unwrapped_optional16wrap_then_unwrap{{[_0-9a-zA-Z]*}}F |
| func wrap_then_unwrap<T>(x x: T) -> T { |
| // CHECK: switch_enum_addr {{%.*}}, case #Optional.some!enumelt.1: [[OK:bb[0-9]+]], case #Optional.none!enumelt: [[FAIL:bb[0-9]+]] |
| // CHECK: [[FAIL]]: |
| // CHECK: unreachable |
| // CHECK: [[OK]]: |
| return wrap(x: x)! |
| } |
| |
| // CHECK-LABEL: sil hidden @_T029implicitly_unwrapped_optional10tuple_bindSSSgSQySi_SStG1x_tF : $@convention(thin) (@owned Optional<(Int, String)>) -> @owned Optional<String> { |
| func tuple_bind(x x: (Int, String)!) -> String? { |
| return x?.1 |
| // CHECK: cond_br {{%.*}}, [[NONNULL:bb[0-9]+]], [[NULL:bb[0-9]+]] |
| // CHECK: [[NONNULL]]: |
| // CHECK: [[STRING:%.*]] = tuple_extract {{%.*}} : $(Int, String), 1 |
| // CHECK-NOT: destroy_value [[STRING]] |
| } |
| |
| // CHECK-LABEL: sil hidden @_T029implicitly_unwrapped_optional011tuple_bind_a1_B0SSSQySi_SStG1x_tF |
| func tuple_bind_implicitly_unwrapped(x x: (Int, String)!) -> String { |
| return x.1 |
| } |
| |
| func return_any() -> AnyObject! { return nil } |
| func bind_any() { |
| let object : AnyObject? = return_any() |
| } |
| |
| // CHECK-LABEL: sil hidden @_T029implicitly_unwrapped_optional6sr3758yyF |
| func sr3758() { |
| // Verify that there are no additional reabstractions introduced. |
| // CHECK: [[CLOSURE:%.+]] = function_ref @_T029implicitly_unwrapped_optional6sr3758yyFySQyypGcfU_ : $@convention(thin) (@in Optional<Any>) -> () |
| // CHECK: [[F:%.+]] = thin_to_thick_function [[CLOSURE]] : $@convention(thin) (@in Optional<Any>) -> () to $@callee_guaranteed (@in Optional<Any>) -> () |
| // CHECK: [[BORROWED_F:%.*]] = begin_borrow [[F]] |
| // CHECK: [[CALLEE:%.+]] = copy_value [[BORROWED_F]] : $@callee_guaranteed (@in Optional<Any>) -> () |
| // CHECK: [[BORROWED_CALLEE:%.*]] = begin_borrow [[CALLEE]] |
| // CHECK: = apply [[BORROWED_CALLEE]]({{%.+}}) : $@callee_guaranteed (@in Optional<Any>) -> () |
| // CHECK: end_borrow [[BORROWED_CALLEE]] |
| // destroy_value [[CALLEE]] |
| // CHECK: end_borrow [[BORROWED_F]] from [[F]] |
| // CHECK: destroy_value [[F]] |
| let f: ((Any?) -> Void) = { (arg: Any!) in } |
| f(nil) |
| } // CHECK: end sil function '_T029implicitly_unwrapped_optional6sr3758yyF' |