test/SILOptimizer/sr-5068.sil

// RUN: %target-sil-opt %s -sil-combine | %FileCheck %s

// REQUIRES: PTRSIZE=64

sil_stage canonical

import Builtin
import Swift
import SwiftShims

class UIViewController {
}

class ExternalFramework {
  func objects<T>(_ type: T.Type) -> Results<T> where T : Object
}

class Object {
}

final class Results<T: Object> {
}

public protocol ReadonlyExternalFramework {
  func objects<T>(_ type: T.Type) -> Results<T> where T : Object
}

extension ExternalFramework : ReadonlyExternalFramework {
}

public enum ExternalFrameworkProvider {
  static func readonly() -> ReadonlyExternalFramework
}

public enum ModelDataService {
  public static func getCurrent(from ExternalFramework: ReadonlyExternalFramework) -> Model?
  public static func count(in ExternalFramework: ReadonlyExternalFramework) -> Int
}

var events: [String]

var currentModel: Model { get }

public class Model : Object {
  @_hasStorage var id: Int { get set }
  override init()
  init(value: Any)
  deinit
}

sil @ExternalFrameworkInit : $@convention(method) (@thick ExternalFramework.Type) -> (@owned ExternalFramework, @error Error)

sil @ResultsCountGetter : $@convention(method) <τ_0_0 where τ_0_0 : Object> (@guaranteed Results<τ_0_0>) -> Int

sil @GetRawPointer : $@convention(thin) () -> Builtin.RawPointer

sil @GetOptionalModel : $@convention(method) (@in ReadonlyExternalFramework, @thin ModelDataService.Type) -> @owned Optional<Model>

// CHECK-LABEL: sil hidden @BuggyFunction : $@convention(thin) () -> @owned Model {
// CHECK: [[ALLOC:%.*]] = alloc_stack $ReadonlyExternalFramework, let, name "ExternalFramework"
// CHECK-NEXT: [[INITE:%.*]] = init_existential_addr [[ALLOC]] : $*ReadonlyExternalFramework, $ExternalFramework
// CHECK: [[TALLOC1:%.*]] = alloc_stack $ReadonlyExternalFramework
// CHECK-NEXT: copy_addr [[ALLOC]] to [initialization] [[TALLOC1]] : $*ReadonlyExternalFramework
// CHECK-NEXT: apply {{%.*}}([[TALLOC1]], {{%.*}}) : $@convention(method) (@in ReadonlyExternalFramework, @thin ModelDataService.Type) -> @owned Optional<Model>
// CHECK: [[TALLOC2:%.*]] = alloc_stack $ReadonlyExternalFramework
// CHECK-NEXT: copy_addr [[ALLOC]] to [initialization] [[TALLOC2]] : $*ReadonlyExternalFramework
// CHECK-NEXT: destroy_addr [[ALLOC]]
// CHECK: [[OEADDR:%.*]] = open_existential_addr immutable_access [[TALLOC2]] : $*ReadonlyExternalFramework
sil hidden @BuggyFunction : $@convention(thin) () -> @owned Model {
bb0:
  %0 = alloc_stack $ReadonlyExternalFramework, let, name "ExternalFramework" // users: %1, %166, %72, %163, %71, %168, %10
  %1 = init_existential_addr %0 : $*ReadonlyExternalFramework, $ExternalFramework // user: %6
  // function_ref ExternalFramework.__allocating_init()
  %2 = function_ref @ExternalFrameworkInit : $@convention(method) (@thick ExternalFramework.Type) -> (@owned ExternalFramework, @error Error) // user: %4
  %3 = metatype $@thick ExternalFramework.Type                // user: %4
  try_apply %2(%3) : $@convention(method) (@thick ExternalFramework.Type) -> (@owned ExternalFramework, @error Error), normal bb1, error bb2 // id: %4

// %5                                             // user: %6
bb1(%5 : $ExternalFramework):                                 // Preds: bb0
  store %5 to %1 : $*ExternalFramework                        // id: %6
  // function_ref static ModelDataService.getCurrent(from:)
  %7 = function_ref @GetOptionalModel : $@convention(method) (@in ReadonlyExternalFramework, @thin ModelDataService.Type) -> @owned Optional<Model> // user: %11
  %8 = metatype $@thin ModelDataService.Type      // user: %11
  %9 = alloc_stack $ReadonlyExternalFramework                 // users: %12, %11, %10
  copy_addr %0 to [initialization] %9 : $*ReadonlyExternalFramework // id: %10
  %11 = apply %7(%9, %8) : $@convention(method) (@in ReadonlyExternalFramework, @thin ModelDataService.Type) -> @owned Optional<Model> // user: %13
  dealloc_stack %9 : $*ReadonlyExternalFramework              // id: %12
  switch_enum %11 : $Optional<Model>, case #Optional.some!enumelt.1: bb4, case #Optional.none!enumelt: bb3 // id: %13

// %14                                            // user: %15
bb2(%14 : $Error):                                // Preds: bb0
  %15 = builtin "unexpectedError"(%14 : $Error) : $()
  unreachable                                     // id: %16

bb3:                                              // Preds: bb1
  // function_ref events.unsafeMutableAddressor
  %17 = function_ref @GetRawPointer : $@convention(thin) () -> Builtin.RawPointer // user: %18
  %18 = apply %17() : $@convention(thin) () -> Builtin.RawPointer // user: %19
  %19 = pointer_to_address %18 : $Builtin.RawPointer to [strict] $*Array<String> // users: %158, %156, %152, %151
  %70 = alloc_stack $ReadonlyExternalFramework                // users: %106, %99, %73, %107, %71
  copy_addr %0 to [initialization] %70 : $*ReadonlyExternalFramework // id: %71
  destroy_addr %0 : $*ReadonlyExternalFramework               // id: %72
  debug_value_addr %70 : $*ReadonlyExternalFramework, let, name "ExternalFramework", argno 1 // id: %73
  %75 = integer_literal $Builtin.Word, 1          // user: %78
  %76 = integer_literal $Builtin.Int64, 1         // user: %77
  %77 = struct $Int (%76 : $Builtin.Int64)        // user: %81
  %78 = alloc_ref [tail_elems $Any * %75 : $Builtin.Word] $_ContiguousArrayStorage<Any> // user: %81
  %79 = metatype $@thin Array<Any>.Type           // user: %81
  %99 = open_existential_addr immutable_access %70 : $*ReadonlyExternalFramework to $*@opened("ED59E038-AA25-11E7-9DEA-685B3593C496") ReadonlyExternalFramework // users: %102, %102, %100
  %100 = witness_method $@opened("ED59E038-AA25-11E7-9DEA-685B3593C496") ReadonlyExternalFramework, #ReadonlyExternalFramework.objects!1 : <Self where Self : ReadonlyExternalFramework><T where T : Object> (Self) -> (T.Type) -> Results<T>, %99 : $*@opened("ED59E038-AA25-11E7-9DEA-685B3593C496") ReadonlyExternalFramework : $@convention(witness_method: ReadonlyExternalFramework) <τ_0_0 where τ_0_0 : ReadonlyExternalFramework><τ_1_0 where τ_1_0 : Object> (@thick τ_1_0.Type, @in_guaranteed τ_0_0) -> @owned Results<τ_1_0> // type-defs: %99; user: %102
  %101 = metatype $@thick Model.Type              // user: %102
  %102 = apply %100<@opened("ED59E038-AA25-11E7-9DEA-685B3593C496") ReadonlyExternalFramework, Model>(%101, %99) : $@convention(witness_method: ReadonlyExternalFramework) <τ_0_0 where τ_0_0 : ReadonlyExternalFramework><τ_1_0 where τ_1_0 : Object> (@thick τ_1_0.Type, @in_guaranteed τ_0_0) -> @owned Results<τ_1_0> // type-defs: %99; users: %105, %104
  // function_ref Results.count.getter
  %103 = function_ref @ResultsCountGetter : $@convention(method) <τ_0_0 where τ_0_0 : Object> (@guaranteed Results<τ_0_0>) -> Int // user: %104
  %104 = apply %103<Model>(%102) : $@convention(method) <τ_0_0 where τ_0_0 : Object> (@guaranteed Results<τ_0_0>) -> Int // user: %108
  strong_release %102 : $Results<Model>           // id: %105
  destroy_addr %70 : $*ReadonlyExternalFramework              // id: %106
  dealloc_stack %70 : $*ReadonlyExternalFramework             // id: %107
  %159 = tuple ()
  %160 = alloc_ref [objc] $Model                  // users: %162, %161
  dealloc_stack %0 : $*ReadonlyExternalFramework              // id: %163
  br bb5(%160 : $Model)                           // id: %164

// %165                                           // users: %169, %167
bb4(%165 : $Model):                               // Preds: bb1
  destroy_addr %0 : $*ReadonlyExternalFramework               // id: %166
  debug_value %165 : $Model, let, name "user"     // id: %167
  dealloc_stack %0 : $*ReadonlyExternalFramework              // id: %168
  br bb5(%165 : $Model)                           // id: %169

// %170                                           // user: %171
bb5(%170 : $Model):                               // Preds: bb3 bb4
  return %170 : $Model                            // id: %171
} // end sil function 'BuggyFunction'