test/IRGen/existentials_objc.sil

// RUN: %empty-directory(%t)
// RUN: %build-irgen-test-overlays
// RUN: %target-swift-frontend -sdk %S/Inputs -I %t %s -emit-ir | %FileCheck %s

// REQUIRES: CPU=x86_64
// REQUIRES: objc_interop

sil_stage canonical

import Builtin
import gizmo

typealias AnyObject = Builtin.AnyObject

// rdar://16621578

sil @init_opaque_existential : $@convention(thin) <T where T : Gizmo> (@owned T) -> @out Any {
bb0(%0 : $*Any, %1 : $T):
  %2 = init_existential_addr %0 : $*Any, $T
  store %1 to %2 : $*T
  %3 = tuple ()
  return %3 : $()
}

// CHECK-DAG:   define{{( protected)?}} swiftcc void @init_opaque_existential([[ANY:%Any]]* noalias nocapture sret, [[GIZMO:%.*]]*, [[TYPE:%.*]]* %T) {{.*}} {
// CHECK:         [[T0:%.*]] = getelementptr inbounds [[ANY]], [[ANY]]* %0, i32 0, i32 1
// CHECK-NEXT:    store [[TYPE]]* %T, [[TYPE]]** [[T0]], align 8
// CHECK-NEXT:    [[T0:%.*]] = getelementptr inbounds [[ANY]], [[ANY]]* %0, i32 0, i32 0
// CHECK-NEXT:    [[T0:%.*]] = getelementptr inbounds [[ANY]], [[ANY]]* %0, i32 0, i32 0
// CHECK-NEXT:    [[T1:%.*]] = bitcast [24 x i8]* [[T0]] to [[GIZMO]]**
// CHECK-NEXT:    store [[GIZMO]]* %1, [[GIZMO]]** [[T1]], align 8
// CHECK-NEXT:    ret void

sil @take_opaque_existential : $@convention(thin) (@in Any) -> @out Any {
bb0(%0 : $*Any, %1 : $*Any):
  copy_addr [take] %1 to [initialization] %0 : $*Any
  %3 = tuple ()
  return %3 : $()
}

// CHECK-DAG:   define{{( protected)?}} swiftcc void @take_opaque_existential([[ANY:%Any]]* noalias nocapture sret, %Any* noalias nocapture dereferenceable({{.*}})) {{.*}} {
// CHECK: call %Any* @"$sypWOb"(%Any* %1, %Any* %0)
// CHECK-NEXT:    ret void

// CHECK-DAG:   define linkonce_odr hidden %Any* @"$sypWOb"(%Any*, %Any*)
// CHECK:       %2 = bitcast %Any* %1 to i8*
// CHECK-NEXT:  %3 = bitcast %Any* %0 to i8*
// CHECK-NEXT:  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %2, i8* align 8 %3, i64 32, i1 false)
// CHECK-NEXT:  ret %Any* %1

// rdar://problem/19035529
@objc protocol OP {}
@objc protocol OP2: OP {}

// CHECK-DAG: define{{( protected)?}} swiftcc %objc_object* @init_existential_objc_to_objc(%objc_object*) {{.*}} {
// CHECK:       ret %objc_object* %0
sil @init_existential_objc_to_objc : $@convention(thin) (@owned OP2) -> @owned OP {
entry(%o : $OP2):
  %a = init_existential_ref %o : $OP2 : $OP2, $OP
  return %a : $OP
}

protocol CP: class {}

// CHECK-DAG: define{{( protected)?}} swiftcc { %objc_object*, i8** } @class_existential_unowned(%objc_object*, i8**) {{.*}} {
sil @class_existential_unowned : $@convention(thin) (@owned CP) -> @owned CP {
entry(%s : $CP):
  %u1 = alloc_stack $@sil_unowned CP
  %u2 = alloc_stack $@sil_unowned CP
  // CHECK: [[U1:%.*]] = alloca [[UREF:{ %swift.unowned, i8.. }]], align 8
  // CHECK: [[U2:%.*]] = alloca [[UREF]], align 8

  store_unowned %s to [initialization] %u1 : $*@sil_unowned CP
  // CHECK: [[T0:%.*]] = getelementptr inbounds [[UREF]], [[UREF]]* [[U1]], i32 0, i32 1
  // CHECK: store i8** %1, i8*** [[T0]], align 8
  // CHECK: [[T0:%.*]] = getelementptr inbounds [[UREF]], [[UREF]]* [[U1]], i32 0, i32 0
  // CHECK: call %swift.unowned* @swift_unknownObjectUnownedInit(%swift.unowned* returned [[T0]], %objc_object* %0)

  // CHECK: [[T0:%.*]] = getelementptr inbounds [[UREF]], [[UREF]]* [[U1]], i32 0, i32 0
  // CHECK: [[T1:%.*]] = call %objc_object* @swift_unknownObjectUnownedLoadStrong(%swift.unowned* [[T0]])
  %t = load_unowned %u1 : $*@sil_unowned CP
  // CHECK: call void @swift_unknownObjectRelease(%objc_object* [[T1]])
  strong_release %t : $CP

  dealloc_stack %u2 : $*@sil_unowned CP
  dealloc_stack %u1 : $*@sil_unowned CP

  %v = ref_to_unmanaged %s : $CP to $@sil_unmanaged CP
  %z = unmanaged_to_ref %v : $@sil_unmanaged CP to $CP

  // CHECK: [[RESULT_A:%.*]] = insertvalue { %objc_object*, i8** } undef, %objc_object* %0, 0
  // CHECK: [[RESULT_B:%.*]] = insertvalue { %objc_object*, i8** } [[RESULT_A]], i8** %1, 1
  // CHECK: ret { %objc_object*, i8** } [[RESULT_B]]

  return %z : $CP
}

// CHECK-DAG: define{{( protected)?}} swiftcc void @class_existential_weak({ %swift.weak, i8** }* noalias nocapture sret, i64, i64)
sil @class_existential_weak : $@convention(thin) (@owned CP?) -> @out @sil_weak CP? {
entry(%w : $*@sil_weak CP?, %a : $CP?):
  // CHECK: [[V:%.*]] = alloca { %swift.weak, i8** }
  %v = alloc_stack $@sil_weak CP?

  // CHECK: [[SRC_REF:%.*]] = inttoptr {{.*}} %objc_object*
  // CHECK: [[SRC_WITNESS:%.*]] = inttoptr {{.*}} i8**
  // CHECK: [[DEST_WITNESS_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 1
  // CHECK: store i8** [[SRC_WITNESS]], i8*** [[DEST_WITNESS_ADDR]]
  // CHECK: [[DEST_REF_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 0
  // CHECK: call %swift.weak* @swift_unknownObjectWeakInit(%swift.weak* returned [[DEST_REF_ADDR]], %objc_object* [[SRC_REF]])
  store_weak %a to [initialization] %w : $*@sil_weak CP?

  // CHECK: [[SRC_REF:%.*]] = inttoptr {{.*}} %objc_object*
  // CHECK: [[SRC_WITNESS:%.*]] = inttoptr {{.*}} i8**
  // CHECK: [[DEST_WITNESS_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 1
  // CHECK: store i8** [[SRC_WITNESS]], i8*** [[DEST_WITNESS_ADDR]]
  // CHECK: [[DEST_REF_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 0
  // CHECK: call %swift.weak* @swift_unknownObjectWeakAssign(%swift.weak* returned [[DEST_REF_ADDR]], %objc_object* [[SRC_REF]])
  store_weak %a to                  %w : $*@sil_weak CP?

  // CHECK: [[SRC_REF_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 0
  // CHECK: [[DEST_REF:%.*]] = call %objc_object* @swift_unknownObjectWeakTakeStrong(%swift.weak* [[SRC_REF_ADDR]])
  // CHECK: [[SRC_WITNESS_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 1
  // CHECK: [[DEST_WITNESS:%.*]] = load i8**, i8*** [[SRC_WITNESS_ADDR]]
  %b = load_weak [take] %w : $*@sil_weak CP?

  // CHECK: [[SRC_REF_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 0
  // CHECK: [[DEST_REF:%.*]] = call %objc_object* @swift_unknownObjectWeakLoadStrong(%swift.weak* [[SRC_REF_ADDR]])
  // CHECK: [[SRC_WITNESS_ADDR:%.*]] = getelementptr inbounds { %swift.weak, i8** }, { %swift.weak, i8** }* %0, i32 0, i32 1
  // CHECK: [[DEST_WITNESS:%.*]] = load i8**, i8*** [[SRC_WITNESS_ADDR]]
  %c = load_weak        %w : $*@sil_weak CP?

  // CHECK: call { %swift.weak, i8** }* @"$s17existentials_objc2CP_pSgXwWOb"({ %swift.weak, i8** }* %0, { %swift.weak, i8** }* [[V]])
  copy_addr [take] %w to [initialization] %v : $*@sil_weak CP?

  // CHECK: call { %swift.weak, i8** }* @"$s17existentials_objc2CP_pSgXwWOd"({ %swift.weak, i8** }* %0, { %swift.weak, i8** }* [[V]])
  copy_addr [take] %w to                  %v : $*@sil_weak CP?

  // CHECK: call { %swift.weak, i8** }* @"$s17existentials_objc2CP_pSgXwWOc"({ %swift.weak, i8** }* %0, { %swift.weak, i8** }* [[V]])
  copy_addr        %w to [initialization] %v : $*@sil_weak CP?

  // CHECK: call { %swift.weak, i8** }* @"$s17existentials_objc2CP_pSgXwWOf"({ %swift.weak, i8** }* %0, { %swift.weak, i8** }* [[V]])
  copy_addr        %w to                  %v : $*@sil_weak CP?

  // CHECK: call { %swift.weak, i8** }* @"$s17existentials_objc2CP_pSgXwWOh"({ %swift.weak, i8** }* [[V]])
  destroy_addr %v : $*@sil_weak CP?

  dealloc_stack %v : $*@sil_weak CP?

  return undef : $()
}

@objc protocol ProtocolA : class {
 @objc optional func funcA()
}

// CHECK: define swiftcc void @useObjcProtocol(%objc_object* swiftself)
// CHECK: entry:
// CHECK:   load i8*, i8** @"\01L_selector(funcA)"
// CHECK:   load i8*, i8** @"\01L_selector(respondsToSelector:)"
// CHECK:   [[TMP:%.*]] = call i1 bitcast (void ()* @objc_msgSend
// CHECK:   br i1 [[TMP]]
//
// CHECK:   [[SELF:%.*]] = bitcast %objc_object* %0 to i8*
// CHECK:   call void bitcast (void ()* @objc_msgSend to void (i8*, i8*)*)(i8* [[SELF]]
// CHECK:   ret void
// CHECK: }

sil public @useObjcProtocol : $@convention(method) (@guaranteed ProtocolA) -> () {
bb0(%0 : $ProtocolA):
  dynamic_method_br %0 : $ProtocolA, #ProtocolA.funcA!1.foreign, bb1, bb2

bb1(%1 : $@convention(objc_method) (ProtocolA) -> ()):
  %3 = apply %1(%0) : $@convention(objc_method) (ProtocolA) -> ()
  br bb3

bb2:
 br bb3

bb3:
 %4 = tuple()
 return %4 : $()
}

protocol TestP : AnyObject {}

class NSObject {}

class TestC {
  @_hasStorage unowned final let t: @sil_unowned NSObject & TestP
  init(t: NSObject & TestP)
}

// CHECK-LABEL: define {{.*}}@test_load_unowned
// CHECK: [[REF:%.*]] = load %swift.refcounted*, %swift.refcounted**
// CHECK: [[CAST:%.*]] = bitcast %swift.refcounted* [[REF]] to %T17existentials_objc8NSObjectC
// CHECK: swift_unownedRetainStrong
// CHECK: [[EXIST0:%.*]] = insertvalue { %T17existentials_objc8NSObjectC*, i8** } undef, %T17existentials_objc8NSObjectC* [[CAST]], 0
// CHECK: [[EXIST:%.*]] = insertvalue { %T17existentials_objc8NSObjectC*, i8** } [[EXIST0]], i8** {{.*}}, 1
// CHECK:  ret { %T17existentials_objc8NSObjectC*, i8** } [[EXIST]]

sil @test_load_unowned : $@convention(method) (@guaranteed TestC) -> @owned NSObject & TestP {
bb0(%0 : $TestC):
  %2 = ref_element_addr %0 : $TestC, #TestC.t
  %3 = load_unowned %2 : $*@sil_unowned NSObject & TestP
  return %3 : $NSObject & TestP
}

// CHECK-LABEL: define {{.*}}@test_load_take_unowned
// CHECK: [[REF:%.*]] = load %swift.refcounted*, %swift.refcounted**
// CHECK: [[CAST:%.*]] = bitcast %swift.refcounted* [[REF]] to %T17existentials_objc8NSObjectC
// CHECK: swift_unownedRetainStrongAndRelease
// CHECK: [[EXIST0:%.*]] = insertvalue { %T17existentials_objc8NSObjectC*, i8** } undef, %T17existentials_objc8NSObjectC* [[CAST]], 0
// CHECK: [[EXIST:%.*]] = insertvalue { %T17existentials_objc8NSObjectC*, i8** } [[EXIST0]], i8** {{.*}}, 1
// CHECK:  ret { %T17existentials_objc8NSObjectC*, i8** } [[EXIST]]

sil @test_load_take_unowned : $@convention(method) (@guaranteed TestC) -> @owned NSObject & TestP {
bb0(%0 : $TestC):
  %2 = ref_element_addr %0 : $TestC, #TestC.t
  %3 = load_unowned [take] %2 : $*@sil_unowned NSObject & TestP
  return %3 : $NSObject & TestP
}

sil_vtable TestC { }

sil_vtable NSObject { }