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// RUN: %target-sil-opt \
// RUN: -devirtualizer \
// RUN: %s \
// RUN: -enable-sil-verify-all \
// RUN: -enable-experimental-feature CoroutineAccessors \
// RUN: | %FileCheck %s
// REQUIRES: swift_feature_CoroutineAccessors
import Builtin
struct Int {
var _value: Builtin.Word
}
class Base {
var x : Int { read }
}
class Derived : Base {
override var x : Int { read }
}
// CHECK-LABEL: sil [ossa] @utilize_begin_apply : {{.*}} {
// CHECK-NOT: class_method
// CHECK-LABEL: } // end sil function 'utilize_begin_apply'
sil [ossa] @utilize_begin_apply : $@convention(thin) () -> () {
bb0:
%derived = alloc_ref $Derived
%base = upcast %derived : $Derived to $Base
%reader = class_method %base : $Base, #Base.x!read2 : (Base) -> () -> (), $@yield_once_2 @convention(method) (@guaranteed Base) -> @yields Int
(%value, %token, %allocation) = begin_apply %reader(%base) : $@yield_once_2 @convention(method) (@guaranteed Base) -> @yields Int
end_apply %token as $()
dealloc_stack %allocation : $*Builtin.SILToken
destroy_value %base : $Base
%retval = tuple ()
return %retval : $()
}
sil [ossa] @Base_x_read2 : $@yield_once_2 @convention(method) (@guaranteed Base) -> @yields Int
sil [ossa] @Derived_x_read2 : $@yield_once_2 @convention(method) (@guaranteed Base) -> @yields Int
sil_vtable Base {
#Base.x!read2: @Base_x_read2
}
sil_vtable Derived {
#Base.x!read2: @Derived_x_read2 [override]
}
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