// RUN: %target-sil-opt -enable-sil-verify-all %s -enforce-exclusivity=unchecked -diagnose-static-exclusivity -verify | %FileCheck %s

sil_stage raw

import Builtin
import Swift


sil @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
sil @takesOneInout : $@convention(thin) (@inout Int) -> ()
sil @makesInt : $@convention(thin) () -> Int
sil @takesInoutAndNoEscapeClosure : $@convention(thin) (@inout Int, @noescape @owned @callee_owned () -> ()) -> ()
sil @takesInoutAndNoEscapeClosureTakingArgument : $@convention(thin) (@inout Int, @noescape @owned @callee_owned (Int) -> ()) -> ()
sil @takesInoutAndNoEscapeGuaranteedClosureTakingArgument : $@convention(thin) (@inout Int, @noescape @guaranteed @callee_guaranteed (Int) -> ()) -> ()
sil @takesInoutAndNoEscapeClosureWithGenericReturn : $@convention(thin) <T> (@inout Int, @noescape @callee_owned (Int) -> @out T) -> ()
sil @takesInoutAndNoEscapeBlockClosure : $@convention(thin) (@inout Int, @owned @convention(block) @noescape () -> ()) -> ()
sil @takesInoutAndNoEscapeOptionalBlockClosure : $@convention(thin) (@inout Int, @owned Optional<@convention(block) @noescape () -> ()>) -> ()

// CHECK-LABEL: sil hidden [ossa] @twoLocalInoutsDisaliased
sil hidden [ossa] @twoLocalInoutsDisaliased : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %5 = alloc_box ${ var Int }
  %6 = project_box %5 : ${ var Int }, 0
  store %0 to [trivial] %6 : $*Int
  %8 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %9 = begin_access [modify] [unknown] %3 : $*Int
  %10 = begin_access [modify] [unknown] %6 : $*Int  // no-error
  %11 = apply %8(%9, %10) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %10 : $*Int
  end_access %9: $*Int
  destroy_value %5 : ${ var Int }
  destroy_value %2 : ${ var Int }
  %14 = tuple ()
  return %14 : $()
}

// CHECK-LABEL: sil hidden [ossa] @twoLocalInoutsSimpleAliasing
sil hidden [ossa] @twoLocalInoutsSimpleAliasing : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = begin_access [modify] [unknown] %3 : $*Int  // expected-note {{conflicting access is here}}
  %7 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %8 = tuple ()
  return %8 : $()
}

// CHECK-LABEL: sil hidden [ossa] @conflictingPriorAccess
sil hidden [ossa] @conflictingPriorAccess : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = begin_access [modify] [unknown] %5 : $*Int
  %7 = begin_access [modify] [unknown] %3 : $*Int  // expected-note {{conflicting access is here}}
  %8 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*Int
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

// CHECK-LABEL: sil hidden [ossa] @twoSequentialInouts
sil hidden [ossa] @twoSequentialInouts : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesOneInout : $@convention(thin) (@inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int
  %6 = apply %4(%5) : $@convention(thin) (@inout Int) -> ()
  end_access %5 : $*Int
  %7 = begin_access [modify] [unknown] %3 : $*Int // no-error
  %8 = apply %4(%7) : $@convention(thin) (@inout Int) -> ()
  end_access %7: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %8 : $()
}


// CHECK-LABEL: sil hidden [ossa] @unconditionalBranch
sil hidden [ossa] @unconditionalBranch : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = begin_access [modify] [unknown] %3 : $*Int
  br finish
finish:
  end_access %4: $*Int
  destroy_value %2 : ${ var Int }
  %5 = tuple ()
  return %5 : $()
}

// CHECK-LABEL: sil hidden [ossa] @diamondMergeStacks
sil hidden [ossa] @diamondMergeStacks : $@convention(thin) (Int, Builtin.Int1) -> () {
bb0(%0 : $Int, %1 : $Builtin.Int1):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = begin_access [modify] [unknown] %3 : $*Int
  cond_br %1, then, else
then:
  br finish
else:
  br finish
finish:
  end_access %4: $*Int
  destroy_value %2 : ${ var Int }
  %5 = tuple ()
  return %5 : $()
}


// CHECK-LABEL: sil hidden [ossa] @loopMergeStacks
sil hidden [ossa] @loopMergeStacks : $@convention(thin) (Int, Builtin.Int1) -> () {
bb0(%0 : $Int, %1 : $Builtin.Int1):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = begin_access [modify] [unknown] %3 : $*Int
  br bb1
bb1:
  cond_br %1, bb1, bb2
bb2:
  end_access %4: $*Int
  destroy_value %2 : ${ var Int }
  %5 = tuple ()
  return %5 : $()
}

// CHECK-LABEL: sil hidden [ossa] @loopWithError
sil hidden [ossa] @loopWithError : $@convention(thin) (Int, Builtin.Int1) -> () {
bb0(%0 : $Int, %1 : $Builtin.Int1):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  br bb1
bb1:
  // Make sure we don't diagnose twice.
  %4 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %5 = begin_access [modify] [unknown] %3 : $*Int // expected-note {{conflicting access is here}}
  end_access %5: $*Int
  end_access %4: $*Int
  cond_br %1, bb1, bb2
bb2:
  destroy_value %2 : ${ var Int }
  %6 = tuple ()
  return %6 : $()
}

// CHECK-LABEL: sil hidden [ossa] @modifySubAccessesAreAllowed
sil hidden [ossa] @modifySubAccessesAreAllowed : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int
  %6 = begin_access [modify] [unknown] %5 : $*Int  // no-error
  %7 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %8 = tuple ()
  return %8 : $()
}

// Multiple access kinds

// CHECK-LABEL: sil hidden [ossa] @twoLocalReadsSimpleAliasing
sil hidden [ossa] @twoLocalReadsSimpleAliasing : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = alloc_box ${ var Int }
  %2 = project_box %1 : ${ var Int }, 0
  store %0 to [trivial] %2 : $*Int
  %4 = begin_access [read] [unknown] %2 : $*Int
  %5 = begin_access [read] [unknown] %2 : $*Int  // no-error
  end_access %5 : $*Int
  end_access %4: $*Int
  destroy_value %1 : ${ var Int }
  %6 = tuple ()
  return %6 : $()
}

// CHECK-LABEL: sil hidden [ossa] @localReadFollowedByModify
sil hidden [ossa] @localReadFollowedByModify : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = alloc_box ${ var Int }
  %2 = project_box %1 : ${ var Int }, 0
  store %0 to [trivial] %2 : $*Int
  %4 = begin_access [read] [unknown] %2 : $*Int // expected-note {{conflicting access is here}}
  %5 = begin_access [modify] [unknown] %2 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  end_access %5 : $*Int
  end_access %4: $*Int
  destroy_value %1 : ${ var Int }
  %6 = tuple ()
  return %6 : $()
}

// CHECK-LABEL: sil hidden [ossa] @localModifyFollowedByRead
sil hidden [ossa] @localModifyFollowedByRead : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = alloc_box ${ var Int }
  %2 = project_box %1 : ${ var Int }, 0
  store %0 to [trivial] %2 : $*Int
  %4 = begin_access [modify] [unknown] %2 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %5 = begin_access [read] [unknown] %2 : $*Int // expected-note {{conflicting access is here}}
  end_access %5 : $*Int
  end_access %4: $*Int
  destroy_value %1 : ${ var Int }
  %6 = tuple ()
  return %6 : $()
}


class ClassWithStoredProperty {
  @_hasStorage var f: Int
  init()
}
// CHECK-LABEL: sil hidden [ossa] @classStoredProperty
sil hidden [ossa] @classStoredProperty : $@convention(thin) (ClassWithStoredProperty) -> () {
bb0(%0 : @unowned $ClassWithStoredProperty):
  %1 = ref_element_addr %0 : $ClassWithStoredProperty, #ClassWithStoredProperty.f

  // expected-error@+1{{overlapping accesses to 'f', but modification requires exclusive access; consider copying to a local variable}}
  %2 = begin_access [modify] [dynamic] %1 : $*Int
  %3 = ref_element_addr %0 : $ClassWithStoredProperty, #ClassWithStoredProperty.f

  // expected-note@+1{{conflicting access is here}}
  %4 = begin_access [modify] [dynamic] %3 : $*Int
  end_access %4 : $*Int
  end_access %2 : $*Int
  destroy_value %0 : $ClassWithStoredProperty
  %5 = tuple ()
  return %5 : $()
}

// CHECK-LABEL: sil hidden [ossa] @lookThroughBeginBorrow
sil hidden [ossa] @lookThroughBeginBorrow : $@convention(thin) (ClassWithStoredProperty) -> () {
bb0(%0 : @unowned $ClassWithStoredProperty):
  %1 = begin_borrow %0 : $ClassWithStoredProperty
  %2 = begin_borrow %0 : $ClassWithStoredProperty
  %3 = ref_element_addr %1 : $ClassWithStoredProperty, #ClassWithStoredProperty.f

  // expected-error@+1{{overlapping accesses to 'f', but modification requires exclusive access; consider copying to a local variable}}
  %4 = begin_access [modify] [dynamic] %3 : $*Int
  %5 = ref_element_addr %2 : $ClassWithStoredProperty, #ClassWithStoredProperty.f

  // expected-note@+1{{conflicting access is here}}
  %6 = begin_access [modify] [dynamic] %5 : $*Int
  end_access %6 : $*Int
  end_access %4 : $*Int
  end_borrow %2 : $ClassWithStoredProperty
  end_borrow %1 : $ClassWithStoredProperty
  destroy_value %0 : $ClassWithStoredProperty
  %7 = tuple ()
  return %7 : $()
}

// Tests for address identity

// Treat 'alloc_box' as identity for project_box

// CHECK-LABEL: sil hidden [ossa] @twoAllocBoxProjections
sil hidden [ossa] @twoAllocBoxProjections : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = copy_value %2 : ${ var Int }
  %5 = project_box %4 : ${ var Int }, 0
  %6 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %7 = begin_access [modify] [unknown] %5 : $*Int  // expected-note {{conflicting access is here}}
  end_access %7 : $*Int
  end_access %6: $*Int
  destroy_value %2 : ${ var Int }
  destroy_value %4 : ${ var Int }
  %8 = tuple ()
  return %8 : $()
}

// CHECK-LABEL: sil hidden [ossa] @lookThroughMarkUninitialized
sil hidden [ossa] @lookThroughMarkUninitialized : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = alloc_box ${ var Int }
  %2 = mark_uninitialized [rootself] %1 : ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = project_box %2 : ${ var Int }, 0
  %5 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = begin_access [modify] [unknown] %4 : $*Int  // expected-note {{conflicting access is here}}
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %7 = tuple ()
  return %7 : $()
}

// Treat global as identity for global_addr instruction-
sil_global hidden @global1 : $Int
sil_global hidden @global2 : $Int

// CHECK-LABEL: sil hidden [ossa] @modifySameGlobal
sil hidden [ossa] @modifySameGlobal : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = global_addr @global1 :$*Int
  %2 = global_addr @global1 :$*Int
  %3 = begin_access [modify] [unknown] %1 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %4 = begin_access [modify] [unknown] %2 : $*Int  // expected-note {{conflicting access is here}}
  end_access %4 : $*Int
  end_access %3: $*Int
  %5 = tuple ()
  return %5 : $()
}

// CHECK-LABEL: sil hidden [ossa] @modifyDifferentGlobal
sil hidden [ossa] @modifyDifferentGlobal : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %1 = global_addr @global1 :$*Int
  %2 = global_addr @global2 :$*Int
  %3 = begin_access [modify] [unknown] %1 : $*Int
  %4 = begin_access [modify] [unknown] %2 : $*Int  // no-error
  end_access %4 : $*Int
  end_access %3: $*Int
  %5 = tuple ()
  return %5 : $()
}

// Multiple errors accessing the same location

// If we have a sequence of begin read - begin write - begin read accesses make
// sure the second read doesn't report a confusing read-read conflict.
// CHECK-LABEL: sil hidden [ossa] @readWriteReadConflictingThirdAccess
sil hidden [ossa] @readWriteReadConflictingThirdAccess : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [read] [unknown] %3 : $*Int  // expected-note {{conflicting access is here}}
  %6 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %7 = begin_access [read] [unknown] %3 : $*Int // no-error
  %8 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*Int
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

// If we have a sequence of begin write - begin write - begin write accesses make sure the
// third write doesn't report a conflict.
// CHECK-LABEL: sil hidden [ossa] @writeWriteWriteConflictingThirdAccess
sil hidden [ossa] @writeWriteWriteConflictingThirdAccess : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = begin_access [modify] [unknown] %3 : $*Int  // expected-note {{conflicting access is here}}
  %7 = begin_access [modify] [unknown] %3 : $*Int  // no-error
  %8 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*Int
  end_access %6 : $*Int
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

// If we have a sequence of begin write - end write - begin write - begin write
// accesses make sure the it is the second begin write that gets the note
// about the conflict and not the first
// CHECK-LABEL: sil hidden [ossa] @resetFirstAccessForNote
sil hidden [ossa] @resetFirstAccessForNote : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int  // no-note
  end_access %5 : $*Int
  %6 = begin_access [modify] [unknown] %3 : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %7 = begin_access [modify] [unknown] %3 : $*Int  // expected-note {{conflicting access is here}}
  %8 = apply %4(%5, %6) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*Int
  end_access %6: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

// Check for iterator invalidation issues when the hash from
// basic blocks to analysis state is re-hashed. The number of
// blocks in this test is determined by the initial size of the
// 'BlockOutAccesses' DenseMap in the implementation.
//
//  The unreachable block below must branch to bN where
//    N = 3/4 * INITIAL_SIZE - 2
sil [ossa] @blockMapRehash : $@convention(method) (Builtin.Int1) -> () {
bb0(%0 : $Builtin.Int1):
 br bb1
bb1:
  br bb2
bb2:
  br bb3
bb3:
  br bb4
bb4:
  br bb5
bb5:
  br bb6
bb6:
  br bb7
bb7:
  br bb8
bb8:
  br bb9
bb9:
  br bb10
bb10:
  br bb11
bb11:
  br bb12
bb12:
  br bb13
bb13:
  br bb14
bb14:
  br bb15
bb15:
  br bb16
bb16:
   br bb17
bb17:
  br bb18
bb18:
  br bb19
bb19:
  br bb20
bb20:
  br bb21
bb21:
  br bb22
bb22:
  br bb23 // no-crash
bb23:
  %1 = tuple ()
  return %1 : $()
bbUnreachable:
  br bb22
}

// Check that a pointer_to_address access passes diagnostics.
//
// CHECK-LABEL: sil hidden [ossa] @pointerToAddr
sil hidden [ossa] @pointerToAddr : $@convention(thin) (Builtin.RawPointer) -> Int {
bb0(%0: $Builtin.RawPointer):
  %adr = pointer_to_address %0 : $Builtin.RawPointer to [strict] $*Int
  %access = begin_access [read] [dynamic] %adr : $*Int
  %val = load [trivial] %access : $*Int
  end_access %access : $*Int
  return %val : $Int
}

// Helper.
struct S {
  var x: Int
}

// Check inlined struct element access.
// This only happens when mandatory passes are applied repeatedly.
// e.g. importing from a debug standard library.
//
// CHECK-LABEL: sil hidden [ossa] @inlinedStructElement
sil hidden [ossa] @inlinedStructElement : $@convention(thin) (@inout S) -> Int {
bb0(%0 : $*S):
  %2 = begin_access [modify] [static] %0 : $*S
  %3 = struct_element_addr %2 : $*S, #S.x
  %4 = begin_access [read] [static] %3 : $*Int
  %5 = load [trivial] %4 : $*Int
  end_access %4 : $*Int
  end_access %2 : $*S
  return %5 : $Int
}

// Check inlined tuple element access.
// This only happens when mandatory passes are applied repeatedly.
//
// CHECK-LABEL: sil hidden [ossa] @inlinedTupleElement
sil hidden [ossa] @inlinedTupleElement : $@convention(thin) (@inout (Int, Int)) -> Int {
bb0(%0 : $*(Int, Int)):
  %2 = begin_access [modify] [static] %0 : $*(Int, Int)
  %3 = tuple_element_addr %2 : $*(Int, Int), 0
  %4 = begin_access [read] [static] %3 : $*Int
  %5 = load [trivial] %4 : $*Int
  end_access %4 : $*Int
  end_access %2 : $*(Int, Int)
  return %5 : $Int
}

// Check inlined enum access.
// This only happens when mandatory passes are applied repeatedly.
//
// CHECK-LABEL: sil hidden [ossa] @inlinedEnumValue
sil hidden [ossa] @inlinedEnumValue : $@convention(thin) (Int) -> (@out Optional<Int>, Int) {
bb0(%0 : $*Optional<Int>, %1 : $Int):
  %6 = unchecked_take_enum_data_addr %0 : $*Optional<Int>, #Optional.some!enumelt.1
  %7 = begin_access [read] [static] %6 : $*Int
  %8 = load [trivial] %7 : $*Int
  end_access %7 : $*Int
  return %8 : $Int
}

// Helper.
class Storage {}

// Check inlined array access.
// This only happens when mandatory passes are applied repeatedly.
//
// CHECK-LABEL: sil hidden [ossa] @inlinedArrayProp
sil hidden [ossa] @inlinedArrayProp : $@convention(thin) (@guaranteed Storage, Builtin.Word) -> Int {
bb0(%0 : @guaranteed $Storage, %1 : $Builtin.Word):
  %2 = ref_tail_addr %0 : $Storage, $UInt
  %3 = begin_access [read] [static] %2 : $*UInt
  %4 = tail_addr %3 : $*UInt, %1 : $Builtin.Word, $Int
  %5 = begin_access [read] [static] %4 : $*Int
  %6 = index_addr %5 : $*Int, %1 : $Builtin.Word
  %7 = begin_access [read] [static] %6 : $*Int
  %8 = load [trivial] %7 : $*Int
  end_access %7 : $*Int
  end_access %5 : $*Int
  end_access %3 : $*UInt
  return %8 : $Int
}

// Conflicts involving noescape closures.

sil hidden [ossa] @closureThatModifiesCaptureAndTakesInout: $@convention(thin) (@inout Int, @inout_aliasable Int) -> () {
bb0(%0 : $*Int, %1 : $*Int):
  %2 = begin_access [modify] [unknown] %1 : $*Int // expected-note {{conflicting access is here}}
  end_access %2 : $*Int
  %3 = tuple ()
  return %3 : $()
}

// FIXME: We should prevent SILGen from emitting such a thing because the only
// way to distinguish a capture from a regular @inout argument here is by the
// @inout_aliasable convention. When we eliminate that convention we should make
// sure that whenever we promote a closure from a @callee_guaranteed @noescape
// function type to @conventio(thin), we insert access enforcement on the caller
// side for captured variables.
//
// CHECK-LABEL: sil hidden [ossa] @inProgressModifyModifyConflictWithCallToClosure
sil hidden [ossa] @inProgressModifyModifyConflictWithCallToClosure : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @closureThatModifiesCaptureAndTakesInout: $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %8 = apply %4(%5, %3) : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  end_access %5: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

sil hidden [ossa] @closureWithArgument_1 : $@convention(thin) (Int, @inout_aliasable Int) -> () {
bb0(%0 : $Int, %1 : $*Int):
  %2 = begin_access [modify] [unknown] %1 : $*Int // expected-note 2 {{conflicting access is here}}
  end_access %2 : $*Int
  %3 = tuple ()
  return %3 : $()
}

// CHECK-LABEL: sil hidden [ossa] @inProgressConflictWithNoEscapeClosureArgument
sil hidden [ossa] @inProgressConflictWithNoEscapeClosureArgument : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeClosureTakingArgument : $@convention(thin) (@inout Int, @noescape @owned @callee_owned (Int) -> ()) -> ()
  %5 = function_ref @closureWithArgument_1 : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %6 = partial_apply %5(%3) : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %6 : $@callee_owned (Int) -> () to $@callee_owned @noescape (Int) -> ()
  %7 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %8 = apply %4(%7, %conv) : $@convention(thin) (@inout Int, @noescape @owned @callee_owned (Int) -> ()) -> ()
  end_access %7: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

// CHECK-LABEL: sil hidden [ossa] @inProgressConflictWithNoEscapeGuaranteedClosureArgument : $@convention(thin) (Int) -> () {
sil hidden [ossa] @inProgressConflictWithNoEscapeGuaranteedClosureArgument : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeGuaranteedClosureTakingArgument : $@convention(thin) (@inout Int, @noescape @guaranteed @callee_guaranteed (Int) -> ()) -> ()
  %5 = function_ref @closureWithArgument_1 : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %6 = partial_apply [callee_guaranteed] %5(%3) : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %6 : $@callee_guaranteed (Int) -> () to $@callee_guaranteed @noescape (Int) -> ()
  %bconv = begin_borrow %conv : $@callee_guaranteed @noescape (Int) -> ()
  %7 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %8 = apply %4(%7, %bconv) : $@convention(thin) (@inout Int, @noescape @guaranteed @callee_guaranteed (Int) -> ()) -> ()
  end_access %7: $*Int
  end_borrow %bconv : $@callee_guaranteed @noescape (Int) -> ()
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

sil hidden [ossa] @closureThatModifiesCapture_2 : $@convention(thin) (@inout_aliasable Int) -> () {
bb0(%0 : $*Int):
  %1 = begin_access [modify] [unknown] %0 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  end_access %1 : $*Int
  %2 = tuple ()
  return %2 : $()
}

// CHECK-LABEL: sil hidden [ossa] @inProgressReadModifyConflictWithNoEscapeClosureArgument
sil hidden [ossa] @inProgressReadModifyConflictWithNoEscapeClosureArgument : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeClosure : $@convention(thin) (@inout Int, @noescape @owned @callee_owned () -> ()) -> ()
  %5 = function_ref @closureThatModifiesCapture_2 : $@convention(thin) (@inout_aliasable Int) -> ()
  %6 = partial_apply %5(%3) : $@convention(thin) (@inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %6 : $@callee_owned () -> () to $@callee_owned @noescape () -> ()
  %7 = begin_access [read] [unknown] %3 : $*Int // expected-note {{conflicting access is here}}
  %8 = apply %4(%3, %conv) : $@convention(thin) (@inout Int, @noescape @owned @callee_owned () -> ()) -> ()
  end_access %7: $*Int
  destroy_value %2 : ${ var Int }
  %9 = tuple ()
  return %9 : $()
}

sil hidden [ossa] @closureWithConcreteReturn : $@convention(thin) (Int, @inout_aliasable Int) -> (Int) {
bb0(%0 : $Int, %1 : $*Int):
  %2 = begin_access [modify] [unknown] %1 : $*Int // expected-note {{conflicting access is here}}
  end_access %2 : $*Int
  return %0 : $Int
}

sil [reabstraction_thunk] @thunkForClosureWithConcreteReturn : $@convention(thin) (Int, @noescape @callee_owned (Int) -> Int) -> @out Int

// CHECK-LABEL: sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithReabstractionThunk
sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithReabstractionThunk : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeClosureWithGenericReturn : $@convention(thin) <T_0> (@inout Int, @noescape @callee_owned (Int) -> @out T_0) -> ()
  %5 = function_ref @closureWithConcreteReturn : $@convention(thin) (Int, @inout_aliasable Int) -> (Int)
  %6 = partial_apply %5(%3) : $@convention(thin) (Int, @inout_aliasable Int) -> (Int)
  %7 = convert_escape_to_noescape %6 : $@callee_owned (Int) -> Int to $@noescape @callee_owned (Int) -> Int
  %8 = function_ref @thunkForClosureWithConcreteReturn : $@convention(thin) (Int, @noescape @callee_owned (Int) -> Int) -> @out Int
  %9 = partial_apply %8(%7) : $@convention(thin) (Int, @noescape @callee_owned (Int) -> Int) -> @out Int
  %10 = convert_escape_to_noescape %9 : $@callee_owned (Int) -> @out Int to $@noescape @callee_owned (Int) -> @out Int
  %11 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %12 = apply %4<Int>(%11, %10) : $@convention(thin) <T_0> (@inout Int, @noescape @callee_owned (Int) -> @out T_0) -> ()
  end_access %11: $*Int
  destroy_value %2 : ${ var Int }
  %13 = tuple ()
  return %13 : $()
}

sil [reabstraction_thunk] @thunkForCalleeGuaranteed : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> ()
sil [reabstraction_thunk] @withoutActuallyEscapingThunk : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()

sil hidden [ossa] @closureThatModifiesCapture_1: $@convention(thin) (@inout_aliasable Int) -> () {
bb0(%0 : $*Int):
  %1 = begin_access [modify] [unknown] %0 : $*Int // expected-note 3{{conflicting access is here}}
  end_access %1 : $*Int
  %2 = tuple ()
  return %2 : $()
}

// CHECK-LABEL: sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithBlockStorage
sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithBlockStorage : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeBlockClosure : $@convention(thin) (@inout Int, @owned @convention(block) @noescape () -> ()) -> ()
  %5 = function_ref @closureThatModifiesCapture_1 : $@convention(thin) (@inout_aliasable Int) -> ()
  %6 = partial_apply [callee_guaranteed] %5(%3) : $@convention(thin) (@inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %6 : $@callee_guaranteed () -> () to $@noescape @callee_guaranteed () -> ()
  %thunk = function_ref @withoutActuallyEscapingThunk : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel = partial_apply [callee_guaranteed] %thunk(%conv) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel2 = mark_dependence %sentinel : $@callee_guaranteed () -> () on %conv : $@noescape @callee_guaranteed () -> ()
  %sentinel3 = copy_value %sentinel2 : $@callee_guaranteed () -> ()
  %7 = alloc_stack $@block_storage @callee_guaranteed () -> ()
  %8 = project_block_storage %7 : $*@block_storage @callee_guaranteed () -> ()
  store %sentinel3 to [init] %8 : $*@callee_guaranteed () -> ()
  %10 = function_ref @thunkForCalleeGuaranteed : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> ()
  %11 = init_block_storage_header %7 : $*@block_storage @callee_guaranteed () -> (), invoke %10 : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> (), type $@convention(block) @noescape () -> ()
  %12 = copy_block %11 : $@convention(block) @noescape () -> ()
  %13 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %14 = apply %4(%13, %12) : $@convention(thin) (@inout Int, @owned @convention(block) @noescape () -> ()) -> ()
  end_access %13 : $*Int
  destroy_addr %8 : $*@callee_guaranteed() -> ()
  dealloc_stack %7 : $*@block_storage @callee_guaranteed () -> ()
  destroy_value %2 : ${ var Int }
  %ret = tuple ()
  return %ret : $()
}

// CHECK-LABEL: sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithOptionalBlockStorage
sil hidden [ossa] @inProgressConflictWithNoEscapeClosureWithOptionalBlockStorage : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeOptionalBlockClosure : $@convention(thin) (@inout Int, @owned Optional<@convention(block) @noescape () -> ()>) -> ()
  %5 = function_ref @closureThatModifiesCapture_1 : $@convention(thin) (@inout_aliasable Int) -> ()
  %6 = partial_apply [callee_guaranteed] %5(%3) : $@convention(thin) (@inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %6 : $@callee_guaranteed () -> () to $@noescape @callee_guaranteed () -> ()
  %thunk = function_ref @withoutActuallyEscapingThunk : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel = partial_apply [callee_guaranteed] %thunk(%conv) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel2 = mark_dependence %sentinel : $@callee_guaranteed () -> () on %conv : $@noescape @callee_guaranteed () -> ()
  %sentinel3 = copy_value %sentinel2 : $@callee_guaranteed () -> ()
  %7 = alloc_stack $@block_storage @callee_guaranteed () -> ()
  %8 = project_block_storage %7 : $*@block_storage @callee_guaranteed () -> ()
  store %sentinel3 to [init] %8 : $*@callee_guaranteed () -> ()
  %10 = function_ref @thunkForCalleeGuaranteed : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> ()
  %11 = init_block_storage_header %7 : $*@block_storage @callee_guaranteed () -> (), invoke %10 : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> (), type $@convention(block) @noescape () -> ()
  %12 = copy_block %11 : $@convention(block) @noescape () -> ()
  %13 = enum $Optional<@convention(block) @noescape () -> ()>, #Optional.some!enumelt.1, %12 : $@convention(block) @noescape () -> ()
  %14 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %15 = apply %4(%14, %13) : $@convention(thin) (@inout Int, @owned Optional<@convention(block) @noescape () -> ()>) -> ()
  end_access %14 : $*Int
  destroy_addr %8 : $*@callee_guaranteed () -> ()
  dealloc_stack %7 : $*@block_storage @callee_guaranteed () -> ()
  destroy_value %2 : ${ var Int }
  %ret = tuple ()
  return %ret : $()
}


// Stored property relaxation.

struct NestedStructWithStoredProps {
  var a: Int
  var b: Int
}

struct StructWithStoredProps {
  var x: Int
  var y: Int

  var n: NestedStructWithStoredProps
}

sil [ossa] @takesInoutIntAndStructWithStoredProps : $@convention(thin) (@inout Int, @inout StructWithStoredProps) -> ()

// CHECK-LABEL: sil hidden [ossa] @twoSeparateStoredProperties
sil hidden [ossa] @twoSeparateStoredProperties : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var StructWithStoredProps }
  %3 = project_box %2 : ${ var StructWithStoredProps }, 0
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps
  %6 = struct_element_addr %5 : $*StructWithStoredProps, #StructWithStoredProps.x
  %7 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // no-error
  %8 = struct_element_addr %7 : $*StructWithStoredProps, #StructWithStoredProps.y
  %9 = apply %4(%6, %8) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*StructWithStoredProps
  end_access %5: $*StructWithStoredProps
  destroy_value %2 : ${ var StructWithStoredProps }
  %10 = tuple ()
  return %10 : $()
}

// CHECK-LABEL: sil hidden [ossa] @twoSeparateNestedStoredProperties
sil hidden [ossa] @twoSeparateNestedStoredProperties : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var StructWithStoredProps }
  %3 = project_box %2 : ${ var StructWithStoredProps }, 0
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps
  %6 = struct_element_addr %5 : $*StructWithStoredProps, #StructWithStoredProps.n
  %7 = struct_element_addr %6 : $*NestedStructWithStoredProps, #NestedStructWithStoredProps.a
  %8 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // no-error
  %9 = struct_element_addr %8 : $*StructWithStoredProps, #StructWithStoredProps.n
  %10 = struct_element_addr %9 : $*NestedStructWithStoredProps, #NestedStructWithStoredProps.b
  %11 = apply %4(%7, %10) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %8 : $*StructWithStoredProps
  end_access %5: $*StructWithStoredProps
  destroy_value %2 : ${ var StructWithStoredProps }
  %12 = tuple ()
  return %12 : $()
}

// CHECK-LABEL: sil hidden [ossa] @theSameStoredProperty
sil hidden [ossa] @theSameStoredProperty : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var StructWithStoredProps }
  %3 = project_box %2 : ${ var StructWithStoredProps }, 0
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = struct_element_addr %5 : $*StructWithStoredProps, #StructWithStoredProps.x
  %7 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-note {{conflicting access is here}}
  %8 = struct_element_addr %7 : $*StructWithStoredProps, #StructWithStoredProps.x
  %9 = apply %4(%6, %8) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*StructWithStoredProps
  end_access %5: $*StructWithStoredProps
  destroy_value %2 : ${ var StructWithStoredProps }
  %10 = tuple ()
  return %10 : $()
}

// CHECK-LABEL: sil hidden [ossa] @storedPropertyAndAggregate
sil hidden [ossa] @storedPropertyAndAggregate : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var StructWithStoredProps }
  %3 = project_box %2 : ${ var StructWithStoredProps }, 0
  %4 = function_ref @takesInoutIntAndStructWithStoredProps : $@convention(thin) (@inout Int, @inout StructWithStoredProps) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = struct_element_addr %5 : $*StructWithStoredProps, #StructWithStoredProps.x
  %7 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-note {{conflicting access is here}}
  %8 = apply %4(%6, %7) : $@convention(thin) (@inout Int, @inout StructWithStoredProps) -> ()
  end_access %7 : $*StructWithStoredProps
  end_access %5: $*StructWithStoredProps
  destroy_value %2 : ${ var StructWithStoredProps }
  %9 = tuple ()
  return %9 : $()
}

// CHECK-LABEL: sil hidden [ossa] @nestedStoredPropertyAndAggregate
sil hidden [ossa] @nestedStoredPropertyAndAggregate : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var StructWithStoredProps }
  %3 = project_box %2 : ${ var StructWithStoredProps }, 0
  %4 = function_ref @takesInoutIntAndStructWithStoredProps : $@convention(thin) (@inout Int, @inout StructWithStoredProps) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = struct_element_addr %5 : $*StructWithStoredProps, #StructWithStoredProps.n
  %7 = struct_element_addr %6 : $*NestedStructWithStoredProps, #NestedStructWithStoredProps.a
  %8 = begin_access [modify] [unknown] %3 : $*StructWithStoredProps // expected-note {{conflicting access is here}}
  %9 = struct_element_addr %8 : $*StructWithStoredProps, #StructWithStoredProps.n
  end_access %8 : $*StructWithStoredProps
  end_access %5: $*StructWithStoredProps
  destroy_value %2 : ${ var StructWithStoredProps }
  %10 = tuple ()
  return %10 : $()
}

// CHECK-LABEL: sil hidden [ossa] @twoSeparateTupleElements
sil hidden [ossa] @twoSeparateTupleElements : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var (Int, Int) }
  %3 = project_box %2 : ${ var (Int, Int) }, 0
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*(Int, Int)
  %6 = tuple_element_addr %5 : $*(Int, Int), 0
  %7 = begin_access [modify] [unknown] %3 : $*(Int, Int) // no-error
  %8 = tuple_element_addr %7 : $*(Int, Int), 1
  %9 = apply %4(%6, %8) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*(Int, Int)
  end_access %5: $*(Int, Int)
  destroy_value %2 : ${ var (Int, Int) }
  %10 = tuple ()
  return %10 : $()
}

// CHECK-LABEL: sil hidden [ossa] @sameTupleElement
sil hidden [ossa] @sameTupleElement : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var (Int, Int) }
  %3 = project_box %2 : ${ var (Int, Int) }, 0
  %4 = function_ref @takesTwoInouts : $@convention(thin) (@inout Int, @inout Int) -> ()
  %5 = begin_access [modify] [unknown] %3 : $*(Int, Int) // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %6 = tuple_element_addr %5 : $*(Int, Int), 0
  %7 = begin_access [modify] [unknown] %3 : $*(Int, Int) // expected-note {{conflicting access is here}}
  %8 = tuple_element_addr %7 : $*(Int, Int), 0
  %9 = apply %4(%6, %8) : $@convention(thin) (@inout Int, @inout Int) -> ()
  end_access %7 : $*(Int, Int)
  end_access %5: $*(Int, Int)
  destroy_value %2 : ${ var (Int, Int) }
  %10 = tuple ()
  return %10 : $()
}

sil hidden [ossa] @passNilToNoEscape : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  %4 = enum $Optional<@convention(block) @noescape () -> ()>, #Optional.none!enumelt
  %5 = function_ref @takesInoutAndNoEscapeOptionalBlockClosure : $@convention(thin) (@inout Int, @owned Optional<@convention(block) @noescape () -> ()>) -> ()
  %6 = apply %5(%3, %4) : $@convention(thin) (@inout Int, @owned Optional<@convention(block) @noescape () -> ()>) -> ()
  %7 = tuple ()
  return %7 : $()
}

sil private [ossa] @closureForDirectPartialApplyTakingInout : $@convention(thin) (@inout Int, @inout_aliasable Int) -> () {
bb0(%0 : $*Int, %1 : $*Int):
  %access = begin_access [read] [unknown] %1 : $*Int // expected-note 3 {{conflicting access is here}}
  %val = load [trivial] %access : $*Int
  end_access %access : $*Int
  %v = tuple ()
  return %v : $()
}

sil hidden [ossa] @directPartialApplyTakingInout : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %box = alloc_box ${ var Int }, var, name "i"
  %boxadr = project_box %box : ${ var Int }, 0
  store %0 to [trivial] %boxadr : $*Int
  %f = function_ref @closureForDirectPartialApplyTakingInout : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  %pa = partial_apply [callee_guaranteed] %f(%boxadr) : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  %nepa = convert_escape_to_noescape %pa : $@callee_guaranteed (@inout Int) -> () to $@noescape @callee_guaranteed (@inout Int) -> ()
  %access = begin_access [modify] [unknown] %boxadr : $*Int  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %call = apply %nepa(%access) : $@noescape @callee_guaranteed (@inout Int) -> ()
  end_access %access : $*Int
  destroy_value %box : ${ var Int }
  %v = tuple ()
  return %v : $()
}

sil private [ossa] @closureForDirectPartialApplyChain : $@convention(thin) (@inout Int, Int, @inout_aliasable Int) -> () {
bb0(%0 : $*Int, %1 : $Int, %2 : $*Int):
  %access = begin_access [read] [unknown] %2 : $*Int // expected-note {{conflicting access is here}}
  %val = load [trivial] %access : $*Int
  end_access %access : $*Int
  %v = tuple ()
  return %v : $()
}

sil hidden [ossa] @directPartialApplyChain : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %box = alloc_box ${ var Int }, var, name "i"
  %boxadr = project_box %box : ${ var Int }, 0
  store %0 to [trivial] %boxadr : $*Int
  %f = function_ref @closureForDirectPartialApplyChain : $@convention(thin) (@inout Int, Int, @inout_aliasable Int) -> ()
  %pa1 = partial_apply [callee_guaranteed] %f(%boxadr) : $@convention(thin) (@inout Int, Int, @inout_aliasable Int) -> ()
  %pa2 = partial_apply [callee_guaranteed] %pa1(%0) : $@callee_guaranteed (@inout Int, Int) -> ()
  %nepa = convert_escape_to_noescape %pa2 : $@callee_guaranteed (@inout Int) -> () to $@noescape @callee_guaranteed (@inout Int) -> ()
  %access = begin_access [modify] [unknown] %boxadr : $*Int   // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %call = apply %nepa(%access) : $@noescape @callee_guaranteed (@inout Int) -> ()
  end_access %access : $*Int
  destroy_value %box : ${ var Int }
  %v = tuple ()
  return %v : $()
}

sil private [ossa] @closureForPartialApplyArgChain : $@convention(thin) (Int, @inout_aliasable Int) -> () {
bb0(%0 : $Int, %1 : $*Int):
  %access = begin_access [read] [unknown] %1 : $*Int // expected-note {{conflicting access is here}}
  %val = load [trivial] %access : $*Int
  end_access %access : $*Int
  %v = tuple ()
  return %v : $()
}

sil hidden [ossa] @partialApplyArgChain : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = alloc_box ${ var Int }
  %3 = project_box %2 : ${ var Int }, 0
  store %0 to [trivial] %3 : $*Int
  %4 = function_ref @takesInoutAndNoEscapeClosure : $@convention(thin) (@inout Int, @noescape @owned @callee_owned () -> ()) -> ()
  %5 = function_ref @closureForPartialApplyArgChain : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %6 = partial_apply %5(%3) : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %7 = partial_apply %6(%0) : $@callee_owned (Int) -> ()
  %conv = convert_escape_to_noescape %7 : $@callee_owned () -> () to $@callee_owned @noescape () -> ()
  %8 = begin_access [modify] [unknown] %3 : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %9 = apply %4(%8, %conv) : $@convention(thin) (@inout Int, @noescape @owned @callee_owned () -> ()) -> ()
  end_access %8: $*Int
  destroy_value %2 : ${ var Int }
  %v = tuple ()
  return %v : $()
}

class SomeClass {}

// LLDB uses mark_uninitialized [var] in an unsupported way via an address to
// pointer. LLDB shouldn't do this, but until it is removed and validated we
// need a test for this.
//
// Check that this doesn't trigger the DiagnoseStaticExclusivity
// assert that all accesses have a valid AccessedStorage source.
sil [ossa] @lldb_unsupported_markuninitialized_testcase : $@convention(thin) (UnsafeMutablePointer<Any>) -> () {
bb0(%0 : $UnsafeMutablePointer<Any>):
  %2 = struct_extract %0 : $UnsafeMutablePointer<Any>, #UnsafeMutablePointer._rawValue
  %3 = integer_literal $Builtin.Int64, 8
  %4 = index_raw_pointer %2 : $Builtin.RawPointer, %3 : $Builtin.Int64
  %5 = pointer_to_address %4 : $Builtin.RawPointer to [strict] $*Builtin.RawPointer
  %6 = load [trivial] %5 : $*Builtin.RawPointer
  %7 = pointer_to_address %6 : $Builtin.RawPointer to [strict] $*Error
  %8 = mark_uninitialized [var] %7 : $*Error
  %9 = struct_extract %0 : $UnsafeMutablePointer<Any>, #UnsafeMutablePointer._rawValue
  %10 = integer_literal $Builtin.Int64, 0
  %11 = index_raw_pointer %9 : $Builtin.RawPointer, %10 : $Builtin.Int64
  %12 = pointer_to_address %11 : $Builtin.RawPointer to [strict] $*Builtin.RawPointer
  %13 = load [trivial] %12 : $*Builtin.RawPointer
  %14 = pointer_to_address %13 : $Builtin.RawPointer to [strict] $*@thick SomeClass.Type
  %15 = mark_uninitialized [var] %14 : $*@thick SomeClass.Type
  %16 = metatype $@thick SomeClass.Type
  %17 = begin_access [modify] [unsafe] %15 : $*@thick SomeClass.Type
  assign %16 to %17 : $*@thick SomeClass.Type
  end_access %17 : $*@thick SomeClass.Type
  %9999 = tuple()
  return %9999 : $()
}

sil [ossa] @addressor : $@convention(thin) () -> UnsafeMutablePointer<Int32>

// An addressor produces an unsafely accessed RawPointer. Pass the
// address to an inout can result in an enforced (unknown) access on
// the unsafe address. We need to handle this case without asserting.
sil [ossa] @addressorAccess : $@convention(thin) (@guaranteed ClassWithStoredProperty, Int32) -> () {
bb0(%0 : @guaranteed $ClassWithStoredProperty, %1 : $Int32):
  %f = function_ref @addressor : $@convention(thin) () -> UnsafeMutablePointer<Int32>
  %up = apply %f() : $@convention(thin) () -> UnsafeMutablePointer<Int32>
  %o = unchecked_ref_cast %0 : $ClassWithStoredProperty to $Builtin.NativeObject
  %ptr = struct_extract %up : $UnsafeMutablePointer<Int32>, #UnsafeMutablePointer._rawValue
  %adr = pointer_to_address %ptr : $Builtin.RawPointer to [strict] $*Int32
  %dep = mark_dependence %adr : $*Int32 on %o : $Builtin.NativeObject
  %a1 = begin_access [modify] [unsafe] %dep : $*Int32
  %a2 = begin_access [modify] [static] %a1 : $*Int32
  store %1 to [trivial] %a2 : $*Int32
  end_access %a2 : $*Int32
  end_access %a1 : $*Int32
  %v = tuple ()
  return %v : $()
}

// <rdar://problem/41976355> [SR-8201]: Swift 4.2 Crash in DiagnoseStaticExclusivity (llvm_unreachable)
// mutatingNoescapeWithThunk and mutatingNoescapeConflictWithThunk.
// Test that noescape closure verification allows a closure with @inout_aliasable argument convention,
// which may only be used as a nonescaping closure, can be passed to a reabstraction thunk
// without the @noescape function-type argument convention.

sil [ossa] @mutatingNoescapeHelper : $@convention(thin) (Optional<UnsafePointer<Int32>>, @inout_aliasable Int32) -> () {
bb0(%0 : $Optional<UnsafePointer<Int32>>, %1 : $*Int32):
  %up = unchecked_enum_data %0 : $Optional<UnsafePointer<Int32>>, #Optional.some!enumelt.1
  %p = struct_extract %up : $UnsafePointer<Int32>, #UnsafePointer._rawValue
  %adr = pointer_to_address %p : $Builtin.RawPointer to [strict] $*Int32
  %val = load [trivial] %adr : $*Int32
  %access = begin_access [modify] [unknown] %1 : $*Int32 // expected-note {{conflicting access is here}}
  store %val to [trivial] %access : $*Int32
  end_access %access : $*Int32
  %v = tuple ()
  return %v : $()
}

sil shared [transparent] [serializable] [reabstraction_thunk] [ossa] @mutatingNoescapeThunk : $@convention(thin) (UnsafePointer<Int32>, @guaranteed @callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()) -> () {
bb0(%0 : $UnsafePointer<Int32>, %1 : @guaranteed $@callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()):
  %e = enum $Optional<UnsafePointer<Int32>>, #Optional.some!enumelt.1, %0 : $UnsafePointer<Int32>
  %c = apply %1(%e) : $@callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()
  %v = tuple ()
  return %v : $()
}

sil [ossa] @takeMutatingNoescapeClosure : $@convention(thin) <τ_0_0> (UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()

// A (mutating) closure taking an @inout_aliasable argument may be
// passed to a reabstraction_thunk as an escaping function type. This
// is valid as long as the thunk is only used as a @nosecape type.
sil [ossa] @mutatingNoescapeWithThunk : $@convention(method) (UnsafePointer<Int32>, @inout Int32) -> () {
bb0(%0 : $UnsafePointer<Int32>, %1 : $*Int32):
  %f1 = function_ref @mutatingNoescapeHelper : $@convention(thin) (Optional<UnsafePointer<Int32>>, @inout_aliasable Int32) -> ()
  %pa1 = partial_apply [callee_guaranteed] %f1(%1) : $@convention(thin) (Optional<UnsafePointer<Int32>>, @inout_aliasable Int32) -> ()
  %thunk = function_ref @mutatingNoescapeThunk : $@convention(thin) (UnsafePointer<Int32>, @guaranteed @callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()) -> ()
  %pa2 = partial_apply [callee_guaranteed] %thunk(%pa1) : $@convention(thin) (UnsafePointer<Int32>, @guaranteed @callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()) -> ()
  %closure = convert_escape_to_noescape [not_guaranteed] %pa2 : $@callee_guaranteed (UnsafePointer<Int32>) -> () to $@noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()
  %f2 = function_ref @takeMutatingNoescapeClosure : $@convention(thin) <τ_0_0> (UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()
  %call = apply %f2<Int32>(%0, %closure) : $@convention(thin) <τ_0_0> (UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()
  %v = tuple ()
  return %v : $()
}

sil [ossa] @takeInoutAndMutatingNoescapeClosure : $@convention(thin) <τ_0_0> (@inout Int32, UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()

sil [ossa] @mutatingNoescapeConflictWithThunk : $@convention(method) (UnsafePointer<Int32>, @inout Int32) -> () {
bb0(%0 : $UnsafePointer<Int32>, %1 : $*Int32):
  %f1 = function_ref @mutatingNoescapeHelper : $@convention(thin) (Optional<UnsafePointer<Int32>>, @inout_aliasable Int32) -> ()
  %pa1 = partial_apply [callee_guaranteed] %f1(%1) : $@convention(thin) (Optional<UnsafePointer<Int32>>, @inout_aliasable Int32) -> ()
  %thunk = function_ref @mutatingNoescapeThunk : $@convention(thin) (UnsafePointer<Int32>, @guaranteed @callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()) -> ()
  %pa2 = partial_apply [callee_guaranteed] %thunk(%pa1) : $@convention(thin) (UnsafePointer<Int32>, @guaranteed @callee_guaranteed (Optional<UnsafePointer<Int32>>) -> ()) -> ()
  %closure = convert_escape_to_noescape [not_guaranteed] %pa2 : $@callee_guaranteed (UnsafePointer<Int32>) -> () to $@noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()
  %f2 = function_ref @takeInoutAndMutatingNoescapeClosure : $@convention(thin) <τ_0_0> (@inout Int32, UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()
  %access = begin_access [modify] [unknown] %1 : $*Int32  // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %call = apply %f2<Int32>(%access, %0, %closure) : $@convention(thin) <τ_0_0> (@inout Int32, UnsafePointer<τ_0_0>, @noescape @callee_guaranteed (UnsafePointer<Int32>) -> ()) -> ()
  end_access %access : $*Int32
  %v = tuple ()
  return %v : $()
}

// <rdar://problem/41660554> Swift CI (macOS release master, OSS): SIL verification failed: Unknown formal access pattern: storage
// Test access marker verification of a KeyPath projection with nested @inout access after inlining.
sil @takeInoutInt : $@convention(thin) (@inout Int) -> ()

// The compiler intrinsic _projectXXXKeyPath returns a tuple of
// UnsafePointer and Optional AnyObject. After inlining, the unsafe
// pointer may appear to originate from anywhere, including a phi.
// There's currently no way to tell that the UnsafePointer originated
// from a KeyPath projection. This pattern could occur with any
// addressor. In either case, the nested access is valid but
// unidentified. Addressors that require enforcement must start a
// dynamic access within the addressor itself, before returning an
// UnsafePointer.
sil [ossa] @testNestedKeypathAccess : $@convention(thin) (@guaranteed (UnsafeMutablePointer<Int>, Optional<AnyObject>)) -> () {
bb0(%0 : @guaranteed $(UnsafeMutablePointer<Int>, Optional<AnyObject>)):
  %up = tuple_extract %0 : $(UnsafeMutablePointer<Int>, Optional<AnyObject>), 0
  %o = tuple_extract %0 : $(UnsafeMutablePointer<Int>, Optional<AnyObject>), 1
  %p = struct_extract %up : $UnsafeMutablePointer<Int>, #UnsafeMutablePointer._rawValue
  %adr = pointer_to_address %p : $Builtin.RawPointer to [strict] $*Int
  %dep = mark_dependence %adr : $*Int on %o : $Optional<AnyObject>
  %access = begin_access [modify] [static] %dep : $*Int
  %f = function_ref @takeInoutInt : $@convention(thin) (@inout Int) -> ()
  %call = apply %f(%access) : $@convention(thin) (@inout Int) -> ()
  end_access %access : $*Int
  %v = tuple ()
  return %v : $()
}

// Test a conflict on a noescape closure where multiple closures may be conditionally stored in an ObjC block.
sil hidden [ossa] @noEscapeClosureWithConditionalBlockStorage : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %box = alloc_box ${ var Int }
  %boxadr = project_box %box : ${ var Int }, 0
  store %0 to [trivial] %boxadr : $*Int
  %closure = function_ref @closureThatModifiesCapture_1 : $@convention(thin) (@inout_aliasable Int) -> ()
  %pa = partial_apply [callee_guaranteed] %closure(%boxadr) : $@convention(thin) (@inout_aliasable Int) -> ()
  %conv = convert_escape_to_noescape %pa : $@callee_guaranteed () -> () to $@noescape @callee_guaranteed () -> ()
  %thunk = function_ref @withoutActuallyEscapingThunk : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel = partial_apply [callee_guaranteed] %thunk(%conv) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  %sentinel2 = mark_dependence %sentinel : $@callee_guaranteed () -> () on %conv : $@noescape @callee_guaranteed () -> ()
  %sentinel3 = copy_value %sentinel2 : $@callee_guaranteed () -> ()
  %calleethunk = function_ref @thunkForCalleeGuaranteed : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> ()
  cond_br undef, bb1, bb2

bb1:
  %bs1 = alloc_stack $@block_storage @callee_guaranteed () -> ()
  %pbs1 = project_block_storage %bs1 : $*@block_storage @callee_guaranteed () -> ()
  store %sentinel3 to [init] %pbs1 : $*@callee_guaranteed () -> ()
  %initblock1 = init_block_storage_header %bs1 : $*@block_storage @callee_guaranteed () -> (), invoke %calleethunk : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> (), type $@convention(block) @noescape () -> ()
  %copyblock1 = copy_block %initblock1 : $@convention(block) @noescape () -> ()
  destroy_addr %pbs1 : $*@callee_guaranteed() -> ()
  dealloc_stack %bs1 : $*@block_storage @callee_guaranteed () -> ()
  br bb3(%copyblock1 : $@convention(block) @noescape () -> ())

bb2:
  %bs2 = alloc_stack $@block_storage @callee_guaranteed () -> ()
  %pbs2 = project_block_storage %bs2 : $*@block_storage @callee_guaranteed () -> ()
  store %sentinel3 to [init] %pbs2 : $*@callee_guaranteed () -> ()
  %initblock2 = init_block_storage_header %bs2 : $*@block_storage @callee_guaranteed () -> (), invoke %calleethunk : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> (), type $@convention(block) @noescape () -> ()
  %copyblock2 = copy_block %initblock2 : $@convention(block) @noescape () -> ()
  destroy_addr %pbs2 : $*@callee_guaranteed() -> ()
  dealloc_stack %bs2 : $*@block_storage @callee_guaranteed () -> ()
  br bb3(%copyblock2 : $@convention(block) @noescape () -> ())

bb3(%block : @owned $@convention(block) @noescape () -> ()):
  %access = begin_access [modify] [unknown] %boxadr : $*Int // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %f = function_ref @takesInoutAndNoEscapeBlockClosure : $@convention(thin) (@inout Int, @owned @convention(block) @noescape () -> ()) -> ()
  %call = apply %f(%access, %block) : $@convention(thin) (@inout Int, @owned @convention(block) @noescape () -> ()) -> ()
  end_access %access : $*Int
  destroy_value %box : ${ var Int }
  %ret = tuple ()
  return %ret : $()
}

// -----------------------------------------------------------------------------
// <rdar://problem/42242406> [SR-8266]: Compiler crash when checking
// exclusivity of inout alias:
// closureWithNoCapture
// closureWithConflict,
// partialApplyPhiThunk
// testPartialApplyPhi.
// testDirectPartialApplyPhi.
//
// Test that 'checkNoEscapePartialApply' does not assert on a noescape
// closure passed through a block argument.

sil hidden [ossa] @closureWithNoCapture : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %2 = tuple ()
  return %2 : $()
}

sil hidden [ossa] @closureWithConflict : $@convention(thin) (Int, @inout_aliasable Int) -> () {
bb0(%0 : $Int, %1 : $*Int):
  %2 = begin_access [modify] [unknown] %1 : $*Int // expected-note {{conflicting access is here}}
  end_access %2 : $*Int
  %v = tuple ()
  return %v : $()
}

sil shared [transparent] [serializable] [reabstraction_thunk] [ossa] @partialApplyPhiThunk : $@convention(thin) (@in_guaranteed Int, @guaranteed @noescape @callee_guaranteed (Int) -> (@error Error)) -> (@error Error) {
bb0(%0 : $*Int, %1 : $@noescape @callee_guaranteed (Int) -> (@error Error)):
  %val = load [trivial] %0 : $*Int
  try_apply %1(%val) : $@noescape @callee_guaranteed (Int) -> (@error Error), normal bb1, error bb2

bb1(%v : $()):
  return %v : $()

bb2(%5 : @owned $Error):
  throw %5 : $Error
}

sil [ossa] @takeGenericNoEscapeFunction : $@convention(method) <τ_0_0> (@inout τ_0_0, @noescape @callee_guaranteed (@in_guaranteed τ_0_0) -> (@error Error)) -> (@error Error)

// CHECK-LABEL: sil [ossa] @testPartialApplyPhi
sil [ossa] @testPartialApplyPhi : $@convention(thin) (Int, @inout Int) -> (@error Error) {
bb0(%0 : $Int, %1 : $*Int):
  cond_br undef, bb1, bb2

bb1:
  %f1 = function_ref @closureWithNoCapture : $@convention(thin) (Int) -> ()
  %pa1 = partial_apply [callee_guaranteed] %f1() : $@convention(thin) (Int) -> ()
  br bb3(%pa1 : $@callee_guaranteed (Int) -> ())

bb2:
  %f2 = function_ref @closureWithConflict : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  %pa2 = partial_apply [callee_guaranteed] %f2(%1) : $@convention(thin) (Int, @inout_aliasable Int) -> ()
  br bb3(%pa2 : $@callee_guaranteed (Int) -> ())

bb3(%pa3 : @owned $@callee_guaranteed (Int) -> ()):
  %cvt3 = convert_function %pa3 : $@callee_guaranteed (Int) -> () to $@callee_guaranteed (Int) -> (@error Error)
  %esc3 = convert_escape_to_noescape [not_guaranteed] %cvt3 : $@callee_guaranteed (Int) -> (@error Error) to $@noescape @callee_guaranteed (Int) -> (@error Error)

  %f3 = function_ref @partialApplyPhiThunk : $@convention(thin) (@in_guaranteed Int, @guaranteed @noescape @callee_guaranteed (Int) -> (@error Error)) -> (@error Error)
  %pa4 = partial_apply [callee_guaranteed] %f3(%esc3) : $@convention(thin) (@in_guaranteed Int, @guaranteed @noescape @callee_guaranteed (Int) -> (@error Error)) -> (@error Error)
  %esc4 = convert_escape_to_noescape [not_guaranteed] %pa4 : $@callee_guaranteed (@in_guaranteed Int) -> (@error Error) to $@noescape @callee_guaranteed (@in_guaranteed Int) -> (@error Error)

  // ClosureLifetimeFixup has not run yet, so these destroys are "incorrect".
  destroy_value %pa4 : $@callee_guaranteed (@in_guaranteed Int) -> (@error Error)
  destroy_value %cvt3 : $@callee_guaranteed (Int) -> (@error Error)

  %access = begin_access [modify] [static] %1 : $*Int   // expected-error {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %f4 = function_ref @takeGenericNoEscapeFunction : $@convention(method) <τ_0_0> (@inout τ_0_0, @noescape @callee_guaranteed (@in_guaranteed τ_0_0) -> (@error Error)) -> (@error Error)
  try_apply %f4<Int>(%access, %esc4) : $@convention(method) <τ_0_0> (@inout τ_0_0, @noescape @callee_guaranteed (@in_guaranteed τ_0_0) -> (@error Error)) -> (@error Error), normal bb4, error bb5

bb4(%v : $()):
  end_access %access : $*Int
  return %v : $()

bb5(%e : @owned $Error):
  end_access %access : $*Int
  throw %e : $Error
}

// CHECK-LABEL: sil [ossa] @testDirectPartialApplyPhi
sil [ossa] @testDirectPartialApplyPhi : $@convention(thin) (@inout Int) -> (@error Error) {
bb0(%0 : $*Int):
  cond_br undef, bb1, bb2

bb1:
  %f1 = function_ref @closureForDirectPartialApplyTakingInout : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  %pa1 = partial_apply [callee_guaranteed] %f1(%0) : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  br bb3(%pa1 : $@callee_guaranteed (@inout Int) -> ())

bb2:
  %f2 = function_ref @closureForDirectPartialApplyTakingInout : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  %pa2 = partial_apply [callee_guaranteed] %f2(%0) : $@convention(thin) (@inout Int, @inout_aliasable Int) -> ()
  br bb3(%pa2 : $@callee_guaranteed (@inout Int) -> ())

bb3(%pa3 : @owned $@callee_guaranteed (@inout Int) -> ()):
  %esc3 = convert_escape_to_noescape [not_guaranteed] %pa3 : $@callee_guaranteed (@inout Int) -> () to $@noescape @callee_guaranteed (@inout Int) -> ()
  destroy_value %pa3 : $@callee_guaranteed (@inout Int) -> ()
  %access = begin_access [modify] [static] %0 : $*Int   // expected-error 2 {{overlapping accesses, but modification requires exclusive access; consider copying to a local variable}}
  %call = apply %esc3(%access) : $@noescape @callee_guaranteed (@inout Int) -> ()
  end_access %access : $*Int
  %v = tuple ()
  return %v : $()
}

// -----------------------------------------------------------------------------
// Test withoutActuallyEscaping thunk.
// <rdar://problem/43059088> Assertion in DiagnoseStaticExclusivity
// Noescape closure verification should not assert.

sil @takeEscapingClosure : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()

sil private [ossa] @nestedInWithoutActuallyEscapingVerify : $@convention(thin) (@inout_aliasable Int) -> () {
bb0(%0 : $*Int):
  %a = begin_access [modify] [unknown] %0 : $*Int
  end_access %a : $*Int
  %v = tuple ()
  return %v : $()
}

// CHECK-LABEL: sil hidden [ossa] @testWithoutActuallyEscapingVerify : $@convention(thin) (@inout Int) -> () {
sil hidden [ossa] @testWithoutActuallyEscapingVerify : $@convention(thin) (@inout Int) -> () {
bb0(%0 : $*Int):
  %2 = function_ref @nestedInWithoutActuallyEscapingVerify : $@convention(thin) (@inout_aliasable Int) -> ()
  %3 = partial_apply [callee_guaranteed] %2(%0) : $@convention(thin) (@inout_aliasable Int) -> ()

  %4 = function_ref @thunkForWithoutActuallyEscapingVerify : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %5 = partial_apply [callee_guaranteed] %4(%3) : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %6 = mark_dependence %5 : $@callee_guaranteed () -> () on %3 : $@callee_guaranteed () -> ()

  %8 = function_ref @closureForWithoutActuallyEscapingVerify : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %9 = apply %8(%6) : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %10 = is_escaping_closure %6 : $@callee_guaranteed () -> ()
  cond_fail %10 : $Builtin.Int1
  destroy_value %6 : $@callee_guaranteed () -> ()
  %14 = tuple ()
  return %14 : $()
}

// CHECK-LABEL: sil shared [transparent] [serializable] [reabstraction_thunk] [without_actually_escaping] [ossa] @thunkForWithoutActuallyEscapingVerify : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> () {
sil shared [transparent] [serializable] [reabstraction_thunk] [without_actually_escaping] [ossa] @thunkForWithoutActuallyEscapingVerify : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> () {
bb0(%0 : @guaranteed $@callee_guaranteed () -> ()):
  %1 = apply %0() : $@callee_guaranteed () -> ()
  return %1 : $()
}

sil private [ossa] @closureForWithoutActuallyEscapingVerify : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> () {
bb0(%0 : @guaranteed $@callee_guaranteed () -> ()):
  %2 = function_ref @takeEscapingClosure : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %3 = apply %2(%0) : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> ()
  %4 = tuple ()
  return %4 : $()
}

// -----------------------------------------------------------------------------
// Test withoutActuallyEscaping convert_function.
// <rdar://problem/43059088> Assertion in DiagnoseStaticExclusivity
// Noescape closure verification should not assert.

// CHECK-LABEL: sil hidden [ossa] @testWithoutActuallyEscapingBlockVerify : $@convention(thin) (Int) -> () {
// CHECK: convert_function %{{.*}} : $@convention(block) () -> () to [without_actually_escaping] $@convention(block) () -> ()
sil hidden [ossa] @testWithoutActuallyEscapingBlockVerify : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
  %box = alloc_box ${ var Int }, var, name "localVal"
  %projbox = project_box %box : ${ var Int }, 0
  store %0 to [trivial] %projbox : $*Int
  %closureF = function_ref @testWithoutActuallyEscapingBlockVerifyClosure : $@convention(thin) (@inout_aliasable Int) -> ()
  %closure = partial_apply [callee_guaranteed] %closureF(%projbox) : $@convention(thin) (@inout_aliasable Int) -> ()
  %block = alloc_stack $@block_storage @callee_guaranteed () -> ()
  %blockproj = project_block_storage %block : $*@block_storage @callee_guaranteed () -> ()
  store %closure to [init] %blockproj : $*@callee_guaranteed () -> ()
  // function_ref thunk for @escaping @callee_guaranteed () -> ()
  %thunkF = function_ref @$sIeg_IeyB_TR : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> ()
  %initblock = init_block_storage_header %block : $*@block_storage @callee_guaranteed () -> (), invoke %thunkF : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> (), type $@convention(block) () -> ()
  destroy_addr %blockproj : $*@callee_guaranteed () -> ()
  dealloc_stack %block : $*@block_storage @callee_guaranteed () -> ()
  %borrow = begin_borrow %initblock : $@convention(block) () -> ()
  %copy = copy_value %borrow : $@convention(block) () -> ()
  %escapingF = convert_function %copy : $@convention(block) () -> () to [without_actually_escaping] $@convention(block) () -> ()
  %clauseF = function_ref @testWithoutActuallyEscapingBlockVerifyClause : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> ()
  %call = apply %clauseF(%escapingF) : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> ()
  destroy_value %escapingF : $@convention(block) () -> ()
  end_borrow %borrow : $@convention(block) () -> ()
  destroy_value %initblock : $@convention(block) () -> ()
  destroy_value %box : ${ var Int }
  %v = tuple ()
  return %v : $()
}

sil [ossa] @testWithoutActuallyEscapingBlockVerifyClosure : $@convention(thin) (@inout_aliasable Int) -> ()

// thunk for @escaping @callee_guaranteed () -> ()
sil shared [transparent] [serializable] [reabstraction_thunk] [ossa] @$sIeg_IeyB_TR : $@convention(c) (@inout_aliasable @block_storage @callee_guaranteed () -> ()) -> () {
// %0
bb0(%0 : $*@block_storage @callee_guaranteed () -> ()):
  %1 = project_block_storage %0 : $*@block_storage @callee_guaranteed () -> ()
  %2 = load [copy] %1 : $*@callee_guaranteed () -> ()
  %3 = begin_borrow %2 : $@callee_guaranteed () -> ()
  %4 = apply %3() : $@callee_guaranteed () -> ()
  end_borrow %3 : $@callee_guaranteed () -> ()
  %6 = tuple ()
  destroy_value %2 : $@callee_guaranteed () -> ()
  return %6 : $()
} // end sil function '$sIeg_IeyB_TR'

sil private [ossa] @testWithoutActuallyEscapingBlockVerifyClause : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> () {
bb0(%0 : @guaranteed $@convention(block) () -> ()):
  %1 = copy_block %0 : $@convention(block) () -> ()
  %3 = begin_borrow %1 : $@convention(block) () -> ()
  %4 = copy_value %3 : $@convention(block) () -> ()
  %5 = apply %4() : $@convention(block) () -> ()
  destroy_value %4 : $@convention(block) () -> ()
  end_borrow %3 : $@convention(block) () -> ()
  destroy_value %1 : $@convention(block) () -> ()
  %v = tuple ()
  return %v : $()
}