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// RUN: %target-swift-emit-silgen -module-name implicitly_unwrapped_optional -disable-objc-attr-requires-foundation-module -enable-objc-interop %s | %FileCheck %s
func foo(f f: (() -> ())!) {
var f: (() -> ())! = f
f?()
}
// CHECK: sil hidden [ossa] @{{.*}}foo{{.*}} : $@convention(thin) (@guaranteed Optional<@callee_guaranteed () -> ()>) -> () {
// CHECK: bb0([[T0:%.*]] : @guaranteed $Optional<@callee_guaranteed () -> ()>):
// CHECK: [[F:%.*]] = alloc_box ${ var Optional<@callee_guaranteed () -> ()> }
// CHECK: [[F_LIFETIME:%[^,]+]] = begin_borrow [lexical] [var_decl] [[F]]
// CHECK: [[PF:%.*]] = project_box [[F_LIFETIME]]
// CHECK: [[T0_COPY:%.*]] = copy_value [[T0]]
// CHECK: store [[T0_COPY]] to [init] [[PF]]
// CHECK: [[READ:%.*]] = begin_access [read] [unknown] [[PF]] : $*Optional<@callee_guaranteed () -> ()>
// CHECK: [[HASVALUE:%.*]] = select_enum_addr [[READ]]
// CHECK: cond_br [[HASVALUE]], bb1, bb3
//
// If it does, project and load the value out of the implicitly unwrapped
// optional...
// CHECK: bb1:
// 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 bb2
// CHECK: bb2(
// CHECK: end_borrow [[F_LIFETIME]]
// CHECK: destroy_value [[F]]
// CHECK: return
// CHECK: bb3:
// CHECK: enum $Optional<()>, #Optional.none!enumelt
// CHECK: br bb2
// The rest of this is tested in optional.swift
// } // end sil function '{{.*}}foo{{.*}}'
func wrap<T>(x x: T) -> T! { return x }
// CHECK-LABEL: sil hidden [ossa] @$s29implicitly_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: [[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 [ossa] @$s29implicitly_unwrapped_optional10tuple_bind1xSSSgSi_SStSg_tF : $@convention(thin) (@guaranteed Optional<(Int, String)>) -> @owned Optional<String> {
func tuple_bind(x x: (Int, String)!) -> String? {
return x?.1
// CHECK: switch_enum {{%.*}}, case #Optional.some!enumelt: [[NONNULL:bb[0-9]+]], case #Optional.none!enumelt: [[NULL:bb[0-9]+]]
// CHECK: [[NONNULL]](
// CHECK: [[STRING:%.*]] = destructure_tuple {{%.*}} : $(Int, String)
// CHECK-NOT: destroy_value [[STRING]]
}
// CHECK-LABEL: sil hidden [ossa] @$s29implicitly_unwrapped_optional011tuple_bind_a1_B01xSSSi_SStSg_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()
}
// https://github.com/apple/swift/issues/46343
//
// CHECK-LABEL: sil hidden [ossa] @$s29implicitly_unwrapped_optional7f_46343yyF
func f_46343() {
// Verify that there are no additional reabstractions introduced.
// CHECK: [[CLOSURE:%.+]] = function_ref @$s29implicitly_unwrapped_optional7f_46343yyFyypSgcfU_ : $@convention(thin) (@in_guaranteed Optional<Any>) -> ()
// CHECK: [[F:%.+]] = thin_to_thick_function [[CLOSURE]] : $@convention(thin) (@in_guaranteed Optional<Any>) -> () to $@callee_guaranteed (@in_guaranteed Optional<Any>) -> ()
// CHECK: [[MOVED_F:%.*]] = move_value [var_decl] [[F]]
// CHECK: [[BORROWED_F:%.*]] = begin_borrow [[MOVED_F]]
// CHECK: [[COPIED_F:%.*]] = copy_value [[BORROWED_F]]
// CHECK: [[BORROWED_F:%.*]] = begin_borrow [[COPIED_F]]
// CHECK: = apply [[BORROWED_F]]({{%.+}}) : $@callee_guaranteed (@in_guaranteed Optional<Any>) -> ()
// CHECK: end_borrow [[BORROWED_F]]
let f: ((Any?) -> Void) = { (arg: Any!) in }
f(nil)
} // CHECK: end sil function '$s29implicitly_unwrapped_optional7f_46343yyF'
// https://github.com/apple/swift/issues/52892
// Make sure we can SILGen all of the below without crashing:
class C1_52892 {
init!() {}
}
class C2_52892 {
init(_ foo: C1_52892) {}
}
@objc class C {
@objc func foo() -> C! { nil }
}
struct S {
var i: Int!
func foo() -> Int! { nil }
subscript() -> Int! { 0 }
func testParend(_ anyObj: AnyObject) {
let _: Int? = (foo)()
let _: Int = (foo)()
let _: Int? = foo.self()
let _: Int = foo.self()
let _: Int? = (self.foo.self)()
let _: Int = (self.foo.self)()
// Not really paren'd, but a previous version of the compiler modeled it
// that way.
let _ = C2_52892(C1_52892())
let _: C = (anyObj.foo)!()
}
func testCurried() {
let _: Int? = S.foo(self)()
let _: Int = S.foo(self)()
let _: Int? = (S.foo(self).self)()
let _: Int = (S.foo(self).self)()
}
}
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