File: borrow_scope_introducing_operands_positive.sil

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// RUN: %target-sil-opt -enable-sil-verify-all=0 -o /dev/null %s 2>&1

// REQUIRES: asserts

// This file has patterns in it that should not trigger the ownership verifier
// so are considered positive checker patterns.

import Builtin

class C {}

sil @getOwnedC : $@convention(thin) () -> (@owned C)

sil [ossa] @coroutine_callee : $@yield_once (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
  yield (), resume bb1, unwind bb2

bb1:
  %r = tuple ()
  return %r : $()

bb2:
  unwind
}

sil [ossa] @destroy_value_before_end_borrow : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  %9999 = tuple()
  return %9999 : $()
}

sil [ossa] @destroy_value_before_end_borrow_coroutine : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%0) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  end_apply %token
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @destroy_value_before_end_borrow_coroutine_1a : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%0) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  end_apply %token
  br bb1

bb1:
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @destroy_value_before_end_borrow_coroutine_2 : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%0) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  abort_apply %token
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @destroy_value_before_end_borrow_coroutine_2b : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%0) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  abort_apply %token
  br bb1

bb1:
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @positive_destroy_value_before_end_borrow_coroutine_3 : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%0) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  cond_br undef, bb1, bb2

bb1:
  abort_apply %token
  destroy_value %0 : $Builtin.NativeObject
  br bb3

bb2:
  end_apply %token
  destroy_value %0 : $Builtin.NativeObject
  br bb3

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

sil [ossa] @end_parent_scope_before_end_borrow_coroutine : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%1) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  end_apply %token
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @end_parent_scope_before_end_borrow_coroutine_1a : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%1) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  end_apply %token
  br bb1

bb1:
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @end_parent_scope_before_end_borrow_coroutine_2 : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%1) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  abort_apply %token
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @end_parent_scope_before_end_borrow_coroutine_2b : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%1) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  abort_apply %token
  br bb1

bb1:
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  %r = tuple ()
  return %r : $()
}

sil [ossa] @positive_end_parent_scope_before_end_borrow_coroutine_3 : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject):
  %1 = begin_borrow %0 : $Builtin.NativeObject
  %coro = function_ref @coroutine_callee : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  %token = begin_apply %coro(%1) : $@yield_once @convention(thin) (@guaranteed Builtin.NativeObject) -> ()
  cond_br undef, bb1, bb2

bb1:
  abort_apply %token
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  br bb3

bb2:
  end_apply %token
  end_borrow %1 : $Builtin.NativeObject
  destroy_value %0 : $Builtin.NativeObject
  br bb3

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

// Test a reborrow on the same branch as the consume.
sil [ossa] @testReborrow : $@convention(thin) (@owned C) -> () {
bb0(%0 : @owned $C):
  cond_br undef, bb1, bb2
bb1:
  destroy_value %0 : $C
  %f = function_ref @getOwnedC : $@convention(thin) () -> (@owned C)
  %owned1 = apply %f() : $@convention(thin) () -> (@owned C)
  %copy1 = copy_value %owned1 : $C
  %borrow1 = begin_borrow %copy1 : $C
  destroy_value %owned1 : $C
  br bb3(%borrow1 : $C, %copy1 : $C)
bb2:
  %borrow2 = begin_borrow %0 : $C
  br bb3(%borrow2 : $C, %0 : $C)
bb3(%borrow3 : @guaranteed $C, %copy3 : @owned $C):
  end_borrow %borrow3 : $C
  destroy_value %copy3 : $C
  %result = tuple ()
  return %result : $()
}