// RUN: %target-swift-frontend -I %S/Inputs/abi %s -emit-ir | FileCheck %s

sil_stage canonical
import c_layout

// CHECK-LABEL: @_TMVVSC14HasNestedUnion18__Unnamed_struct_s = linkonce_odr hidden global
// CHECK-SAME:  void (%swift.type*)* @initialize_metadata___Unnamed_struct_s,
// CHECK-SAME:  i8* getelementptr inbounds
// CHECK-SAME:  %swift.type* null,
// CHECK-SAME:  [[INT:i[0-9]+]] 1,
// CHECK-SAME:  @_TWVVVSC14HasNestedUnion18__Unnamed_struct_s
// CHECK-SAME:  [[INT]] 1,
// CHECK-SAME:  [[INT]] sub ({{.*}}),
// CHECK-SAME:  %swift.type* null,
// CHECK-SAME:  [[INT]] 0,
// CHECK-SAME:  [[INT]] 4 }

sil @test0 : $() -> () {
bb0:
  %0 = metatype $@thick HasNestedUnion.Type

  %ret = tuple ()
  return %ret : $()
}

// CHECK-LABEL: define private void @initialize_metadata___Unnamed_struct_s
// CHECK:       [[PARENT:%.*]] = call %swift.type* @_TMaVSC14HasNestedUnion()
// CHECK-NEXT:  [[T0:%.]] = bitcast %swift.type* %0 to %swift.type**
// CHECK-NEXT:  [[T1:%.]] = getelementptr inbounds %swift.type*, %swift.type** [[T0]], [[INT]] 2
// CHECK-NEXT:  store %swift.type* [[PARENT]], %swift.type** [[T1]],
// CHECK-NEXT:  ret void