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// RUN: %target-swift-frontend \
// RUN: -emit-silgen \
// RUN: %s \
// RUN: | %FileCheck %s
enum MaybeMaybeVoid<Wrapped: ~Copyable>: ~Copyable {
case none(())
case some(Wrapped)
}
// CHECK-LABEL: sil {{.*}}[ossa] @maybeMaybeVoid2Optional {{.*}} {
// CHECK: [[STACK:%[^,]+]] = alloc_stack
// CHECK: [[ADDR:%[^,]+]] = mark_unresolved_non_copyable_value [consumable_and_assignable] [[STACK]]
// CHECK: [[ACCESS:%[^,]+]] = begin_access [read] [static] [no_nested_conflict] [[ADDR]]
// CHECK: switch_enum_addr [[ACCESS]]
// CHECK-SAME: case #MaybeMaybeVoid.none!enumelt: [[NONE_BLOCK:bb[0-9]+]]
// CHECK: [[NONE_BLOCK]]:
// CHECK: [[REGISTER_14:%[^,]+]] = tuple ()
// CHECK: end_access [[ACCESS]]
// CHECK: [[ACCESS_AGAIN:%[^,]+]] = begin_access [deinit] [static] [no_nested_conflict] [[ADDR]]
// CHECK: [[NONE_ADDR:%[^,]+]] = unchecked_take_enum_data_addr [[ACCESS_AGAIN]]
// CHECK-SAME: #MaybeMaybeVoid.none!enumelt
// Verify that the load is trivial.
// CHECK: load [trivial] [[NONE_ADDR]]
// CHECK-LABEL: } // end sil function 'maybeMaybeVoid2Optional'
@_silgen_name("maybeMaybeVoid2Optional")
func maybeMaybeVoid2Optional<Wrapped: ~Copyable>(_ o2: consuming MaybeMaybeVoid<Wrapped>) -> Optional<Wrapped> {
switch consume o2 {
case .none(let void):
return .none
case .some(let wrapped):
return .some(wrapped)
}
}
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