cloning_opaque_values_objc.sil

// RUN: %target-sil-opt -sil-print-types -enable-sil-verify-all -enable-sil-opaque-values -inline %s | %FileCheck %s

// Check cloning of instructions that are only legal in opaque values mode.

// REQUIRES: objc_interop

import Swift

struct UnownedBox<T : AnyObject> {
  unowned var value: T
}

// CHECK-LABEL: sil [ossa] @unowned_copy_value_caller : {{.*}} {
// CHECK:       bb0([[STRONG:%[^,]+]] :
// CHECK:         [[UNOWNED:%[^,]+]] = unowned_copy_value [[STRONG]]
// CHECK:         destroy_value [[STRONG]]
// CHECK:         [[RETVAL:%[^,]+]] = struct $UnownedBox<T> ([[UNOWNED]] :
// CHECK:         return [[RETVAL]]
// CHECK-LABEL: } // end sil function 'unowned_copy_value_caller'
sil [ossa] @unowned_copy_value_caller : $@convention(thin) <T where T : AnyObject> (@owned T) -> @out UnownedBox<T> {
bb0(%value : @owned $T):
  %callee = function_ref @unowned_copy_value : $@convention(thin) <T where T : AnyObject> (@owned T) -> @out UnownedBox<T>
  %retval = apply %callee<T>(%value) : $@convention(thin) <T where T : AnyObject> (@owned T) -> @out UnownedBox<T>
  return %retval : $UnownedBox<T>
}

sil [always_inline] [ossa] @unowned_copy_value : $@convention(thin) <T where T : AnyObject> (@owned T) -> @out UnownedBox<T> {
bb0(%owned_value : @owned $T):
  %unowned_value = unowned_copy_value %owned_value : $T
  destroy_value %owned_value : $T
  %instance = struct $UnownedBox<T> (%unowned_value : $@sil_unowned T)
  return %instance : $UnownedBox<T>
}