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