moveonlywrapper_to_copyable.sil

// RUN: %target-sil-opt -sil-print-types -enable-objc-interop -enable-sil-verify-all=true %s | %target-sil-opt -sil-print-types -enable-objc-interop -enable-sil-verify-all=true | %FileCheck %s

sil_stage raw

import Builtin

class Klass {}

sil @use_foo : $@convention(thin) (@guaranteed Klass) -> ()

// CHECK-LABEL: sil [ossa] @foo : $@convention(thin) (@owned Klass) -> @owned Klass {
// CHECK: bb0([[ARG:%[0-9]+]] :
// CHECK: [[MOVE_ONLY:%[0-9]+]] = copyable_to_moveonlywrapper [owned] [[ARG]] : $Klass
// CHECK: [[BORROWED_MOVE_ONLY:%[0-9]+]] = begin_borrow [[MOVE_ONLY]]
// CHECK: moveonlywrapper_to_copyable [guaranteed] [[BORROWED_MOVE_ONLY]] : $@moveOnly Klass
// CHECK: moveonlywrapper_to_copyable [owned] [[MOVE_ONLY]] : $@moveOnly Klass
// CHECK: } // end sil function 'foo'
sil [ossa] @foo : $@convention(thin) (@owned Klass) -> @owned Klass {
bb0(%0 : @owned $Klass):
  %1 = copyable_to_moveonlywrapper [owned] %0 : $Klass
  %1a = begin_borrow %1 : $@moveOnly Klass
  %2a = moveonlywrapper_to_copyable [guaranteed] %1a : $@moveOnly Klass
  %f = function_ref @use_foo : $@convention(thin) (@guaranteed Klass) -> ()
  apply %f(%2a) : $@convention(thin) (@guaranteed Klass) -> ()
  end_borrow %1a : $@moveOnly Klass
  %2 = moveonlywrapper_to_copyable [owned] %1 : $@moveOnly Klass
  return %2 : $Klass
}

// CHECK-LABEL: sil [ossa] @foo2 : $@convention(thin) (@guaranteed Klass) -> () {
// CHECK: bb0([[ARG:%[0-9]+]] :
// CHECK: [[MOVE_ONLY:%[0-9]+]] = copyable_to_moveonlywrapper [guaranteed] [[ARG]] : $Klass
// CHECK: [[BORROWED_MOVE_ONLY:%[0-9]+]] = begin_borrow [[MOVE_ONLY]]
// CHECK: moveonlywrapper_to_copyable [guaranteed] [[BORROWED_MOVE_ONLY]] : $@moveOnly Klass
// CHECK: } // end sil function 'foo2'
sil [ossa] @foo2 : $@convention(thin) (@guaranteed Klass) -> () {
bb0(%0 : @guaranteed $Klass):
  %1 = copyable_to_moveonlywrapper [guaranteed] %0 : $Klass
  %1a = begin_borrow %1 : $@moveOnly Klass
  %2a = moveonlywrapper_to_copyable [guaranteed] %1a : $@moveOnly Klass
  %f = function_ref @use_foo : $@convention(thin) (@guaranteed Klass) -> ()
  apply %f(%2a) : $@convention(thin) (@guaranteed Klass) -> ()
  end_borrow %1a : $@moveOnly Klass
  %9999 = tuple()
  return %9999 : $()
}