// RUN: %target-sil-opt -enable-sil-verify-all %s -array-specialize

sil_stage canonical

import Builtin
import Swift

struct ArrayIntBuffer {
  var storage : Builtin.NativeObject
}

struct MyArray<T> {
  var buffer : ArrayIntBuffer
}

enum MyBool{
  case True
  case False
}

class MyClass {
}

/// We need to split the loop exit edge from bb1 to bb3 before updating ssa form
/// after cloning.
sil @clone_switch_enum_exit : $@convention(thin) (@inout MyArray<MyClass>, @inout MyBool) -> MyBool {
bb0(%0 : $*MyArray<MyClass>, %1 : $*MyBool):
  %3 = load %0 : $*MyArray<MyClass>
  br bb1

bb1:
  %2 = function_ref @arrayPropertyIsNative : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  %4 = load %1 : $*MyBool
  retain_value %3 : $MyArray<MyClass>
  %5 = apply %2(%3) : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  switch_enum %4 : $MyBool, case #MyBool.False!enumelt: bb3, case #MyBool.True!enumelt: bb2

bb2:
 %6 = integer_literal $Builtin.Int1, -1
 cond_br %6, bb1, bb4

bb3:
 br bb4

bb4:
  return %4 : $MyBool
}

protocol AProtocol : class {
}

sil @cant_handle_open_existential_use_outside_loop : $@convention(thin) (@inout MyArray<MyClass>, @inout MyBool, @owned AProtocol) -> MyBool {
bb0(%0 : $*MyArray<MyClass>, %1 : $*MyBool, %10 : $AProtocol):
  %3 = load %0 : $*MyArray<MyClass>
  br bb1

bb1:
  %2 = function_ref @arrayPropertyIsNative : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  %4 = load %1 : $*MyBool
  retain_value %3 : $MyArray<MyClass>
  %5 = apply %2(%3) : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  %11 = open_existential_ref %10 : $AProtocol to $@opened("B538073C-2428-11E5-AC93-C82A1428F987") AProtocol
  switch_enum %4 : $MyBool, case #MyBool.False!enumelt: bb3, case #MyBool.True!enumelt: bb2

bb2:
 %6 = integer_literal $Builtin.Int1, -1
 cond_br %6, bb1, bb4

bb3:
 br bb4

bb4:
  release_value %11 : $@opened("B538073C-2428-11E5-AC93-C82A1428F987") AProtocol
  return %4 : $MyBool
}

sil public_external [_semantics "array.props.isNativeTypeChecked"] @arrayPropertyIsNative : $@convention(method) (@owned MyArray<MyClass>) -> Bool {
bb0(%0: $MyArray<MyClass>):
  unreachable
}

// Make sure we can handle try_apply when splitting edges. This test used to crash.

sil @throwing_fun : $@convention(thin) () -> (MyBool, @error ErrorType)

sil @clone_try_apply_exit : $@convention(thin) (@inout MyArray<MyClass>, @inout MyBool) -> (MyBool, @error ErrorType) {
bb0(%0 : $*MyArray<MyClass>, %1 : $*MyBool):
  %3 = load %0 : $*MyArray<MyClass>
  br bb1

bb1:
  %2 = function_ref @arrayPropertyIsNative : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  %4 = load %1 : $*MyBool
  retain_value %3 : $MyArray<MyClass>
  %5 = apply %2(%3) : $@convention(method) (@owned MyArray<MyClass>) -> Bool
  %7 = function_ref @throwing_fun : $@convention(thin) () -> (MyBool, @error ErrorType)
  try_apply %7() : $@convention(thin) () -> (MyBool, @error ErrorType), normal bb2, error bb5

bb2(%8 : $MyBool):
 %6 = integer_literal $Builtin.Int1, -1
 cond_br %6, bb1, bb4

bb3:
 br bb4

bb4:
  return %4 : $MyBool

bb5(%9 : $ErrorType):
  throw %9 : $ErrorType
}