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|
// RUN: %target-sil-opt -module-name Swift -enable-sil-verify-all -semantic-arc-opts %s | %FileCheck %s
sil_stage canonical
import Builtin
//////////////////
// Declarations //
//////////////////
sil @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
sil @owned_user : $@convention(thin) (@owned Builtin.NativeObject) -> ()
struct NativeObjectPair {
var obj1 : Builtin.NativeObject
var obj2 : Builtin.NativeObject
}
class Klass {}
struct MyInt {
var value: Builtin.Int32
}
struct AnotherStruct {
var i : Builtin.Int32
var c : Klass
}
struct StructMemberTest {
var c : Klass
var s : AnotherStruct
var t : (Builtin.Int32, AnotherStruct)
}
enum FakeOptional<T> {
case none
case some(T)
}
sil @fakeoptional_guaranteed_user : $@convention(thin) (@guaranteed FakeOptional<Klass>) -> ()
///////////
// Tests //
///////////
// CHECK-LABEL: sil [ossa] @argument_only_destroy_user_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
// CHECK-NOT: copy_value
// CHECK-NOT: destroy_value
sil [ossa] @argument_only_destroy_user_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
destroy_value %1 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @argument_diamond_test_case : $@convention(thin) (@guaranteed Builtin.NativeObject) -> @owned Builtin.NativeObject {
// CHECK: bb0([[ARG:%.*]] : @guaranteed $Builtin.NativeObject):
// CHECK-NEXT: [[RESULT:%.*]] = copy_value [[ARG]]
// CHECK-NEXT: cond_br undef, [[LHSBB:bb[0-9]+]], [[RHSBB:bb[0-9]+]]
//
// CHECK: [[LHSBB]]:
// CHECK-NEXT: br [[EPILOGBB:bb[0-9]+]]
//
// CHECK: [[RHSBB]]:
// CHECK-NEXT: br [[EPILOGBB]]
//
// CHECK: [[EPILOGBB]]:
// CHECK-NEXT: return [[RESULT]]
sil [ossa] @argument_diamond_test_case : $@convention(thin) (@guaranteed Builtin.NativeObject) -> @owned Builtin.NativeObject {
bb0(%0 : @guaranteed $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
%2 = copy_value %1 : $Builtin.NativeObject
cond_br undef, bb1, bb2
bb1:
destroy_value %1 : $Builtin.NativeObject
br bb3
bb2:
destroy_value %1 : $Builtin.NativeObject
br bb3
bb3:
return %2 : $Builtin.NativeObject
}
// CHECK-LABEL: sil [ossa] @argument_copy_borrow_test_case : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
// CHECK: bb0([[ARG:%.*]] : @guaranteed $Builtin.NativeObject
// CHECK-NOT: copy_value
// CHECK-NOT: begin_borrow
// CHECK: apply {{%.*}}([[ARG]])
// CHECK-NOT: end_borrow
// CHECK-NOT: destroy_value
// CHECK: } // end sil function 'argument_copy_borrow_test_case'
sil [ossa] @argument_copy_borrow_test_case : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
%2 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
%3 = begin_borrow %1 : $Builtin.NativeObject
apply %2(%3) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
end_borrow %3 : $Builtin.NativeObject
destroy_value %1 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @argument_copy_of_copy : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
// CHECK: bb0
// CHECK-NEXT: tuple
// CHECK-NEXT: return
// CHECK-NEXT: } // end sil function 'argument_copy_of_copy'
sil [ossa] @argument_copy_of_copy : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
%2 = begin_borrow %1 : $Builtin.NativeObject
%3 = copy_value %2 : $Builtin.NativeObject
%4 = begin_borrow %3 : $Builtin.NativeObject
end_borrow %4 : $Builtin.NativeObject
destroy_value %3 : $Builtin.NativeObject
end_borrow %2 : $Builtin.NativeObject
destroy_value %1 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @copy_struct_extract_guaranteed_use : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
// CHECK: bb0([[ARG:%.*]] : @guaranteed $NativeObjectPair):
// CHECK-NOT: copy_value
// CHECK-NOT: begin_borrow
// CHECK: [[FIELD:%.*]] = struct_extract [[ARG]]
// CHECK: apply {{%.*}}([[FIELD]]) :
// CHECK-NEXT: tuple
// CHECK-NEXT: return
// CHECK: } // end sil function 'copy_struct_extract_guaranteed_use'
sil [ossa] @copy_struct_extract_guaranteed_use : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
bb0(%0 : @guaranteed $NativeObjectPair):
%1 = copy_value %0 : $NativeObjectPair
%2 = begin_borrow %1 : $NativeObjectPair
%3 = struct_extract %2 : $NativeObjectPair, #NativeObjectPair.obj1
%4 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %4(%3) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
end_borrow %2 : $NativeObjectPair
destroy_value %1 : $NativeObjectPair
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @struct_extract_copy_guaranteed_use : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
// CHECK: bb0([[ARG:%.*]] : @guaranteed $NativeObjectPair):
// CHECK: [[FIELD:%.*]] = struct_extract [[ARG]]
// CHECK: apply {{%.*}}([[FIELD]])
// CHECK-NOT: destroy_value
// CHECK: } // end sil function 'struct_extract_copy_guaranteed_use'
sil [ossa] @struct_extract_copy_guaranteed_use : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
bb0(%0 : @guaranteed $NativeObjectPair):
%1 = struct_extract %0 : $NativeObjectPair, #NativeObjectPair.obj1
%2 = copy_value %1 : $Builtin.NativeObject
%3 = begin_borrow %2 : $Builtin.NativeObject
%4 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %4(%3) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
end_borrow %3 : $Builtin.NativeObject
destroy_value %2 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @process_forwarding_uses : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
// CHECK-NOT: copy_value
// CHECK: } // end sil function 'process_forwarding_uses'
sil [ossa] @process_forwarding_uses : $@convention(thin) (@guaranteed NativeObjectPair) -> () {
bb0(%0 : @guaranteed $NativeObjectPair):
%1 = copy_value %0 : $NativeObjectPair
(%2, %3) = destructure_struct %1 : $NativeObjectPair
%4 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %4(%2) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %4(%3) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
destroy_value %2 : $Builtin.NativeObject
destroy_value %3 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @process_forwarding_uses_2 : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
// CHECK-NOT: copy_value
// CHECK: } // end sil function 'process_forwarding_uses_2'
sil [ossa] @process_forwarding_uses_2 : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
%2 = unchecked_ref_cast %1 : $Builtin.NativeObject to $Builtin.NativeObject
%4 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %4(%2) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
destroy_value %2 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// Do not eliminate a copy from an unowned value. This will cause us to pass the
// unowned value as guaranteed... =><=.
//
// CHECK-LABEL: sil [ossa] @unowned_arg_copy : $@convention(thin) (Builtin.NativeObject) -> () {
// CHECK: copy_value
// CHECK: } // end sil function 'unowned_arg_copy'
sil [ossa] @unowned_arg_copy : $@convention(thin) (Builtin.NativeObject) -> () {
bb0(%0 : @unowned $Builtin.NativeObject):
%1 = copy_value %0 : $Builtin.NativeObject
%2 = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
apply %2(%1) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
destroy_value %1 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @dead_live_range_multiple_destroy_value : $@convention(thin) (@owned Builtin.NativeObject) -> () {
// CHECK-NOT: copy_value
// CHECK-NOT: destroy_value
// CHECK: bb3:
// CHECK: destroy_value
// CHECK: } // end sil function 'dead_live_range_multiple_destroy_value'
sil [ossa] @dead_live_range_multiple_destroy_value : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject) :
%1 = copy_value %0 : $Builtin.NativeObject
cond_br undef, bb1, bb2
bb1:
destroy_value %1 : $Builtin.NativeObject
br bb3
bb2:
destroy_value %1 : $Builtin.NativeObject
br bb3
bb3:
destroy_value %0 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @dead_live_range_multiple_destroy_value_consuming_user : $@convention(thin) (@owned Builtin.NativeObject) -> () {
// CHECK: copy_value
// CHECK: destroy_value
// CHECK: destroy_value
// CHECK: } // end sil function 'dead_live_range_multiple_destroy_value_consuming_user'
sil [ossa] @dead_live_range_multiple_destroy_value_consuming_user : $@convention(thin) (@owned Builtin.NativeObject) -> () {
bb0(%0 : @owned $Builtin.NativeObject) :
%1 = copy_value %0 : $Builtin.NativeObject
cond_br undef, bb1, bb2
bb1:
destroy_value %1 : $Builtin.NativeObject
br bb3
bb2:
%2 = function_ref @owned_user : $@convention(thin) (@owned Builtin.NativeObject) -> ()
apply %2(%1) : $@convention(thin) (@owned Builtin.NativeObject) -> ()
br bb3
bb3:
destroy_value %0 : $Builtin.NativeObject
%9999 = tuple()
return %9999 : $()
}
// Simple in_guaranteed argument load_copy.
// CHECK-LABEL: sil [ossa] @load_copy_from_in_guaranteed : $@convention(thin) (@in_guaranteed Builtin.NativeObject) -> () {
// CHECK: bb0([[ARG:%.*]] :
// CHECK: load_borrow
// CHECK: load_borrow
// CHECK: load [copy]
// CHECK: } // end sil function 'load_copy_from_in_guaranteed'
sil [ossa] @load_copy_from_in_guaranteed : $@convention(thin) (@in_guaranteed Builtin.NativeObject) -> () {
bb0(%0 : $*Builtin.NativeObject):
%g = function_ref @guaranteed_user : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
// Simple same bb.
%1 = load [copy] %0 : $*Builtin.NativeObject
apply %g(%1) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
destroy_value %1 : $Builtin.NativeObject
// Diamond.
%2 = load [copy] %0 : $*Builtin.NativeObject
cond_br undef, bb1, bb2
bb1:
apply %g(%2) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
destroy_value %2 : $Builtin.NativeObject
br bb3
bb2:
destroy_value %2 : $Builtin.NativeObject
br bb3
bb3:
// Consuming use blocks.
%3 = load [copy] %0 : $*Builtin.NativeObject
%4 = function_ref @owned_user : $@convention(thin) (@owned Builtin.NativeObject) -> ()
apply %4(%3) : $@convention(thin) (@owned Builtin.NativeObject) -> ()
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @destructure_test : $@convention(thin) (@guaranteed StructMemberTest) -> Builtin.Int32 {
// CHECK: bb0([[ARG:%.*]] : @guaranteed $StructMemberTest):
// CHECK: [[EXT:%.*]] = struct_extract [[ARG]]
// CHECK: ([[DEST_1:%.*]], [[DEST_2:%.*]]) = destructure_tuple [[EXT]]
// CHECK: [[RESULT:%.*]] = struct_extract [[DEST_2]]
// CHECK: return [[RESULT]]
// CHECK: } // end sil function 'destructure_test'
sil [ossa] @destructure_test : $@convention(thin) (@guaranteed StructMemberTest) -> Builtin.Int32 {
bb0(%0 : @guaranteed $StructMemberTest):
%2 = struct_extract %0 : $StructMemberTest, #StructMemberTest.t
%3 = copy_value %2 : $(Builtin.Int32, AnotherStruct)
(%4, %5) = destructure_tuple %3 : $(Builtin.Int32, AnotherStruct)
%6 = begin_borrow %5 : $AnotherStruct
%7 = struct_extract %6 : $AnotherStruct, #AnotherStruct.i
end_borrow %6 : $AnotherStruct
destroy_value %5 : $AnotherStruct
return %7 : $Builtin.Int32
}
// Make sure that in a case where we have multiple non-trivial values passed to
// a forwarding instruction we do not optimize... but if we only have one (and
// multiple trivial arguments), we can.
//
// CHECK-LABEL: sil [ossa] @multiple_arg_forwarding_inst_test : $@convention(thin) (@guaranteed Builtin.NativeObject, @guaranteed Builtin.NativeObject, Builtin.Int32) -> () {
// CHECK-NOT: copy_value
// CHECK: } // end sil function 'multiple_arg_forwarding_inst_test'
sil [ossa] @multiple_arg_forwarding_inst_test : $@convention(thin) (@guaranteed Builtin.NativeObject, @guaranteed Builtin.NativeObject, Builtin.Int32) -> () {
bb0(%0 : @guaranteed $Builtin.NativeObject, %1 : @guaranteed $Builtin.NativeObject, %1a : $Builtin.Int32):
%2 = copy_value %0 : $Builtin.NativeObject
%3 = copy_value %1 : $Builtin.NativeObject
%4 = tuple(%2 : $Builtin.NativeObject, %3 : $Builtin.NativeObject)
destroy_value %4 : $(Builtin.NativeObject, Builtin.NativeObject)
%5 = copy_value %0 : $Builtin.NativeObject
%6 = tuple(%5 : $Builtin.NativeObject, %1a : $Builtin.Int32)
destroy_value %6 : $(Builtin.NativeObject, Builtin.Int32)
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @switch_enum_test_no_default : $@convention(thin) (@guaranteed FakeOptional<Builtin.NativeObject>) -> () {
// CHECK-NOT: copy_value
// CHECK: } // end sil function 'switch_enum_test_no_default'
sil [ossa] @switch_enum_test_no_default : $@convention(thin) (@guaranteed FakeOptional<Builtin.NativeObject>) -> () {
bb0(%0 : @guaranteed $FakeOptional<Builtin.NativeObject>):
%1 = copy_value %0 : $FakeOptional<Builtin.NativeObject>
switch_enum %1 : $FakeOptional<Builtin.NativeObject>, case #FakeOptional.some!enumelt: bb1, case #FakeOptional.none!enumelt: bb2
bb1(%2 : @owned $Builtin.NativeObject):
destroy_value %2 : $Builtin.NativeObject
br bb3
bb2:
br bb3
bb3:
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @switch_enum_test_with_default : $@convention(thin) (@guaranteed FakeOptional<Builtin.NativeObject>) -> () {
// CHECK-NOT: copy_value
// CHECK: } // end sil function 'switch_enum_test_with_default'
sil [ossa] @switch_enum_test_with_default : $@convention(thin) (@guaranteed FakeOptional<Builtin.NativeObject>) -> () {
bb0(%0 : @guaranteed $FakeOptional<Builtin.NativeObject>):
%1 = copy_value %0 : $FakeOptional<Builtin.NativeObject>
switch_enum %1 : $FakeOptional<Builtin.NativeObject>, case #FakeOptional.some!enumelt: bb1, default bb2
bb1(%2 : @owned $Builtin.NativeObject):
destroy_value %2 : $Builtin.NativeObject
br bb3
bb2:
br bb3
bb3:
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @do_not_add_trivial_users_of_owned_values_to_isconsumed_worklist : $@convention(thin) (@guaranteed (Klass, MyInt)) -> Builtin.Int32 {
// CHECK-NOT: copy_value
// CHECK-NOT: destroy_value
// CHECK: } // end sil function 'do_not_add_trivial_users_of_owned_values_to_isconsumed_worklist'
sil [ossa] @do_not_add_trivial_users_of_owned_values_to_isconsumed_worklist : $@convention(thin) (@guaranteed (Klass, MyInt)) -> Builtin.Int32 {
bb0(%0 : @guaranteed $(Klass, MyInt)):
%1 = copy_value %0 : $(Klass, MyInt)
(%2, %3) = destructure_tuple %1 : $(Klass, MyInt)
%4 = struct_extract %3 : $MyInt, #MyInt.value
destroy_value %2 : $Klass
return %4 : $Builtin.Int32
}
// CHECK-LABEL: sil [ossa] @switch_enum_test_loadcopy_no_default : $@convention(thin) (@owned FakeOptional<Builtin.NativeObject>) -> () {
// CHECK-NOT: load [copy]
// CHECK: load_borrow
// CHECK-NOT: load [copy]
// CHECK: } // end sil function 'switch_enum_test_loadcopy_no_default'
sil [ossa] @switch_enum_test_loadcopy_no_default : $@convention(thin) (@owned FakeOptional<Builtin.NativeObject>) -> () {
bb0(%0 : @owned $FakeOptional<Builtin.NativeObject>):
%0a = alloc_stack $FakeOptional<Builtin.NativeObject>
store %0 to [init] %0a : $*FakeOptional<Builtin.NativeObject>
%1 = load [copy] %0a : $*FakeOptional<Builtin.NativeObject>
switch_enum %1 : $FakeOptional<Builtin.NativeObject>, case #FakeOptional.some!enumelt: bb1, case #FakeOptional.none!enumelt: bb2
bb1(%2 : @owned $Builtin.NativeObject):
destroy_value %2 : $Builtin.NativeObject
br bb3
bb2:
br bb3
bb3:
destroy_addr %0a : $*FakeOptional<Builtin.NativeObject>
dealloc_stack %0a : $*FakeOptional<Builtin.NativeObject>
%9999 = tuple()
return %9999 : $()
}
// CHECK-LABEL: sil [ossa] @switch_enum_test_loadcopy_with_default : $@convention(thin) (@owned FakeOptional<Builtin.NativeObject>) -> () {
// CHECK-NOT: load [copy]
// CHECK: load_borrow
// CHECK-NOT: load [copy]
// CHECK: } // end sil function 'switch_enum_test_loadcopy_with_default'
sil [ossa] @switch_enum_test_loadcopy_with_default : $@convention(thin) (@owned FakeOptional<Builtin.NativeObject>) -> () {
bb0(%0 : @owned $FakeOptional<Builtin.NativeObject>):
%0a = alloc_stack $FakeOptional<Builtin.NativeObject>
store %0 to [init] %0a : $*FakeOptional<Builtin.NativeObject>
%1 = load [copy] %0a : $*FakeOptional<Builtin.NativeObject>
switch_enum %1 : $FakeOptional<Builtin.NativeObject>, case #FakeOptional.some!enumelt: bb1, default bb2
bb1(%2 : @owned $Builtin.NativeObject):
destroy_value %2 : $Builtin.NativeObject
br bb3
bb2:
br bb3
bb3:
destroy_addr %0a : $*FakeOptional<Builtin.NativeObject>
dealloc_stack %0a : $*FakeOptional<Builtin.NativeObject>
%9999 = tuple()
return %9999 : $()
}
// ============================================================================
// Test SemanticARC phi optimization. canEliminatePhi must recognize
// terminators with multiple operands.
// CHECK-LABEL: sil [ossa] @testTypeDependentCheckCast : $@convention(thin) (@guaranteed Klass, @thick @dynamic_self Klass.Type) -> () {
// CHECK: bb0(%0 : @guaranteed $Klass, %1 : $@thick @dynamic_self Klass.Type):
// CHECK: checked_cast_br Klass in %0 : $Klass to @dynamic_self Klass, bb1, bb2 // type-defs: %1; id: %2
//
// CHECK: bb1([[CAST:%.*]] : @guaranteed $Klass):
// CHECK: [[SOME:%.*]] = enum $FakeOptional<Klass>, #FakeOptional.some!enumelt, [[CAST]] : $Klass
// CHECK: br bb3([[SOME]] : $FakeOptional<Klass>)
//
// CHECK: bb2([[FAIL:%.*]] : @guaranteed $Klass):
// CHECK-NEXT: [[NONE:%.*]] = enum $FakeOptional<Klass>, #FakeOptional.none!enumelt
// CHECK-NEXT: br bb3([[NONE]] : $FakeOptional<Klass>)
//
// CHECK: bb3([[PHI:%.*]] : @guaranteed $FakeOptional<Klass>):
// CHECK: switch_enum [[PHI]] : $FakeOptional<Klass>, case #FakeOptional.some!enumelt: bb5, case #FakeOptional.none!enumelt: bb4
//
// CHECK: bb4:
// CHECK-NEXT: br bb6
//
// CHECK: bb5(%{{.*}} : @guaranteed $Klass):
// CHECK-NEXT: br bb6
// CHECK-LABEL: } // end sil function 'testTypeDependentCheckCast'
sil [ossa] @testTypeDependentCheckCast : $@convention(thin) (@guaranteed Klass, @thick @dynamic_self Klass.Type) -> () {
bb0(%0 : @guaranteed $Klass, %1 : $@thick @dynamic_self Klass.Type):
%2 = copy_value %0 : $Klass
checked_cast_br Klass in %2 : $Klass to @dynamic_self Klass, bb1, bb2
bb1(%4 : @owned $Klass):
%5 = enum $FakeOptional<Klass>, #FakeOptional.some!enumelt, %4 : $Klass
br bb3(%5 : $FakeOptional<Klass>)
bb2(%7 : @owned $Klass):
destroy_value %7 : $Klass
%9 = enum $FakeOptional<Klass>, #FakeOptional.none!enumelt
br bb3(%9 : $FakeOptional<Klass>)
bb3(%11 : @owned $FakeOptional<Klass>):
switch_enum %11 : $FakeOptional<Klass>, case #FakeOptional.some!enumelt: bb5, case #FakeOptional.none!enumelt: bb4
bb4:
br bb6
bb5(%14 : @owned $Klass):
destroy_value %14 : $Klass
br bb6
bb6:
%17 = tuple ()
return %17 : $()
}
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