1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
// RUN: %target-swift-emit-silgen -module-name optional %s | %FileCheck %s
func testCall(_ f: (() -> ())?) {
f?()
}
// CHECK: sil hidden [ossa] @{{.*}}testCall{{.*}}
// CHECK: bb0([[T0:%.*]] : @guaranteed $Optional<@callee_guaranteed () -> ()>):
// CHECK: [[T0_COPY:%.*]] = copy_value [[T0]]
// CHECK-NEXT: switch_enum [[T0_COPY]] : $Optional<@callee_guaranteed () -> ()>, case #Optional.some!enumelt: [[SOME:bb[0-9]+]], case #Optional.none!enumelt: [[NONE:bb[0-9]+]]
//
// If it does, project and load the value out of the implicitly unwrapped
// optional...
// CHECK: [[SOME]]([[FN0:%.*]] :
// .... then call it
// CHECK-NEXT: [[B:%.*]] = begin_borrow [[FN0]]
// CHECK-NEXT: apply [[B]]()
// CHECK: destroy_value [[FN0]]
// CHECK: br [[EXIT:bb[0-9]+]](
// (first nothing block)
// CHECK: [[NONE]]:
// CHECK-NEXT: enum $Optional<()>, #Optional.none!enumelt
// CHECK-NEXT: br [[EXIT]]
// CHECK: } // end sil function '$s8optional8testCallyyyycSgF'
func testAddrOnlyCallResult<T>(_ f: (() -> T)?) {
var f = f
var x = f?()
}
// CHECK-LABEL: sil hidden [ossa] @{{.*}}testAddrOnlyCallResult{{.*}} :
// CHECK: bb0([[T0:%.*]] : @guaranteed $Optional<@callee_guaranteed @substituted <τ_0_0> () -> @out τ_0_0 for <T>>):
// CHECK: [[F:%.*]] = alloc_box $<τ_0_0> { var Optional<@callee_guaranteed @substituted <τ_0_0> () -> @out τ_0_0 for <τ_0_0>> } <T>, var, name "f"
// CHECK: [[F_LIFETIME:%[^,]+]] = begin_borrow [lexical] [var_decl] [[F]]
// CHECK-NEXT: [[PBF:%.*]] = project_box [[F_LIFETIME]]
// CHECK: [[T0_COPY:%.*]] = copy_value [[T0]]
// CHECK: store [[T0_COPY]] to [init] [[PBF]]
// CHECK-NEXT: [[X:%.*]] = alloc_box $<τ_0_0> { var Optional<τ_0_0> } <T>, var, name "x"
// CHECK-NEXT: [[X_LIFETIME:%[^,]+]] = begin_borrow [lexical] [var_decl] [[X]]
// CHECK-NEXT: [[PBX:%.*]] = project_box [[X_LIFETIME]]
// CHECK-NEXT: [[TEMP:%.*]] = init_enum_data_addr [[PBX]]
// CHECK-NEXT: [[READ:%.*]] = begin_access [read] [unknown] [[PBF]]
// Check whether 'f' holds a value.
// CHECK: [[HASVALUE:%.*]] = select_enum_addr [[READ]]
// CHECK-NEXT: cond_br [[HASVALUE]], bb1, bb3
// If so, pull out the value...
// CHECK: bb1:
// CHECK-NEXT: [[T1:%.*]] = unchecked_take_enum_data_addr [[READ]]
// CHECK-NEXT: [[T0:%.*]] = load [copy] [[T1]]
// CHECK-NEXT: end_access [[READ]]
// ...evaluate the rest of the suffix...
// CHECK: [[B:%.*]] = begin_borrow [[T0]]
// CHECK-NEXT: apply [[B]]([[TEMP]])
// ...and coerce to T?
// CHECK: inject_enum_addr [[PBX]] {{.*}}some
// CHECK: destroy_value [[T0]]
// CHECK-NEXT: br bb2
// Continuation block.
// CHECK: bb2
// CHECK-NEXT: end_borrow [[X_LIFETIME]]
// CHECK-NEXT: destroy_value [[X]]
// CHECK-NEXT: end_borrow [[F_LIFETIME]]
// CHECK-NEXT: destroy_value [[F]]
// CHECK-NOT: destroy_value %0
// CHECK-NEXT: [[T0:%.*]] = tuple ()
// CHECK-NEXT: return [[T0]] : $()
// Nothing block.
// CHECK: bb3:
// CHECK-NEXT: end_access [[READ]]
// CHECK-NEXT: inject_enum_addr [[PBX]] {{.*}}none
// CHECK-NEXT: br bb2
// <rdar://problem/15180622>
func wrap<T>(_ x: T) -> T? { return x }
// CHECK-LABEL: sil hidden [ossa] @$s8optional16wrap_then_unwrap{{[_0-9a-zA-Z]*}}F
func wrap_then_unwrap<T>(_ x: T) -> T {
// CHECK: switch_enum_addr {{.*}}, case #Optional.some!enumelt: [[OK:bb[0-9]+]], case #Optional.none!enumelt: [[FAIL:bb[0-9]+]]
// CHECK: [[FAIL]]:
// CHECK: unreachable
// CHECK: [[OK]]:
// CHECK: unchecked_take_enum_data_addr
return wrap(x)!
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional10tuple_bind{{[_0-9a-zA-Z]*}}F
func tuple_bind(_ x: (Int, String)?) -> String? {
return x?.1
// CHECK: switch_enum {{%.*}}, case #Optional.some!enumelt: [[NONNULL:bb[0-9]+]], case #Optional.none!enumelt: [[NULL:bb[0-9]+]]
// CHECK: [[NONNULL]]([[TUPLE:%.*]] :
// CHECK: ({{%.*}}, [[STRING:%.*]]) = destructure_tuple [[TUPLE]]
// CHECK: [[RESULT:%.*]] = enum $Optional<String>, #Optional.some!enumelt, [[STRING]]
// CHECK-NOT: destroy_value [[STRING]]
// CHECK: br {{bb[0-9]+}}([[RESULT]] :
}
// rdar://21883752 - We were crashing on this function because the deallocation happened
// out of scope.
// CHECK-LABEL: sil hidden [ossa] @$s8optional16crash_on_deallocyySDySiSaySiGGFfA_
func crash_on_dealloc(_ dict : [Int : [Int]] = [:]) {
var dict = dict
dict[1]?.append(2)
}
func use_unwrapped(_: Int) {}
// CHECK-LABEL: sil hidden [ossa] @$s8optional15explicit_unwrap{{[_0-9a-zA-Z]*}}F
// CHECK: [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
// CHECK-NEXT: [[FILESIZ:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[FILEASC:%.*]] = integer_literal $Builtin.Int1,
// CHECK-NEXT: [[LINE:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[COLUMN:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[IMPLICIT:%.*]] = integer_literal $Builtin.Int1, 0
// CHECK: [[PRECOND:%.*]] = function_ref @$ss30_diagnoseUnexpectedNilOptional{{[_0-9a-zA-Z]*}}F
// CHECK: apply [[PRECOND]]([[FILESTR]], [[FILESIZ]], [[FILEASC]], [[LINE]], [[IMPLICIT]])
func explicit_unwrap(_ value: Int?) {
use_unwrapped(value!)
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional19explicit_iuo_unwrap{{[_0-9a-zA-Z]*}}F
// CHECK: [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
// CHECK-NEXT: [[FILESIZ:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[FILEASC:%.*]] = integer_literal $Builtin.Int1,
// CHECK-NEXT: [[LINE:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[COLUMN:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[IMPLICIT:%.*]] = integer_literal $Builtin.Int1, 0
// CHECK: [[PRECOND:%.*]] = function_ref @$ss30_diagnoseUnexpectedNilOptional{{[_0-9a-zA-Z]*}}F
// CHECK: apply [[PRECOND]]([[FILESTR]], [[FILESIZ]], [[FILEASC]], [[LINE]], [[IMPLICIT]])
func explicit_iuo_unwrap(_ value: Int!) {
use_unwrapped(value!)
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional19implicit_iuo_unwrap{{[_0-9a-zA-Z]*}}F
// CHECK: [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
// CHECK-NEXT: [[FILESIZ:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[FILEASC:%.*]] = integer_literal $Builtin.Int1,
// CHECK-NEXT: [[LINE:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[COLUMN:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[IMPLICIT:%.*]] = integer_literal $Builtin.Int1, -1
// CHECK: [[PRECOND:%.*]] = function_ref @$ss30_diagnoseUnexpectedNilOptional{{[_0-9a-zA-Z]*}}F
// CHECK: apply [[PRECOND]]([[FILESTR]], [[FILESIZ]], [[FILEASC]], [[LINE]], [[IMPLICIT]])
func implicit_iuo_unwrap(_ value: Int!) {
use_unwrapped(value)
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional34implicit_iuo_unwrap_sourceLocation{{[_0-9a-zA-Z]*}}F
// CHECK: [[FILESTR:%.*]] = string_literal utf8 "optional/custom.swuft"
// CHECK-NEXT: [[FILESIZ:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[FILEASC:%.*]] = integer_literal $Builtin.Int1,
// CHECK-NEXT: [[LINE:%.*]] = integer_literal $Builtin.Word, 2000
// CHECK-NEXT: [[COLUMN:%.*]] = integer_literal $Builtin.Word,
// CHECK-NEXT: [[IMPLICIT:%.*]] = integer_literal $Builtin.Int1, -1
// CHECK: [[PRECOND:%.*]] = function_ref @$ss30_diagnoseUnexpectedNilOptional{{[_0-9a-zA-Z]*}}F
// CHECK: apply [[PRECOND]]([[FILESTR]], [[FILESIZ]], [[FILEASC]], [[LINE]], [[IMPLICIT]])
func implicit_iuo_unwrap_sourceLocation(_ value: Int!) {
#sourceLocation(file: "custom.swuft", line: 2000)
use_unwrapped(value)
#sourceLocation() // reset
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional0A20_to_existential_castyyF : $@convention(thin) () -> () {
// CHECK: bb0:
// CHECK: [[MEM:%.*]] = alloc_stack $Any
// CHECK: [[ADDR:%.*]] = init_existential_addr [[MEM]] : $*Any, $Optional<Int>
// CHECK: [[PAYLOAD_ADDR:%.*]] = init_enum_data_addr [[ADDR]] : $*Optional<Int>, #Optional.some!enumelt
// CHECK: [[CLOSURE:%.*]] = function_ref @$s8optional0A20_to_existential_castyyFSiyKXEfU_ : $@convention(thin) () -> (Int, @error any Error)
// CHECK: try_apply [[CLOSURE]]() : $@convention(thin) () -> (Int, @error any Error), normal bb1, error bb3
// CHECK: bb1([[RESULT:%.*]] : $Int):
// CHECK: store [[RESULT]] to [trivial] [[PAYLOAD_ADDR]] : $*Int
// CHECK: inject_enum_addr [[ADDR]] : $*Optional<Int>, #Optional.some!enumelt
// CHECK: br bb2
// CHECK: bb2:
// CHECK-NEXT: destroy_addr [[MEM]] : $*Any
// CHECK-NEXT: dealloc_stack [[MEM]] : $*Any
// CHECK: return
// CHECK: bb3([[ERR:%.*]] : @owned $any Error):
// CHECK: destroy_value [[ERR]] : $any Error
// CHECK: inject_enum_addr [[ADDR]] : $*Optional<Int>, #Optional.none!enumelt
// CHECK: br bb2
// CHECK: }
func optional_to_existential_cast() {
let _: Any = try? {() throws in 3 }()
}
// CHECK-LABEL: sil hidden [ossa] @$s8optional0A29_to_existential_cast_RETURNEDypyF : $@convention(thin) () -> @out Any {
// CHECK: bb0([[MEM:%.*]] : $*Any):
// CHECK: [[ADDR:%.*]] = init_existential_addr [[MEM]] : $*Any, $Optional<Int>
// CHECK: [[PAYLOAD_ADDR:%.*]] = init_enum_data_addr [[ADDR]] : $*Optional<Int>, #Optional.some!enumelt
// CHECK: [[CLOSURE:%.*]] = function_ref @$s8optional0A29_to_existential_cast_RETURNEDypyFSiyKXEfU_ : $@convention(thin) () -> (Int, @error any Error)
// CHECK: try_apply [[CLOSURE]]() : $@convention(thin) () -> (Int, @error any Error), normal bb1, error bb3
// CHECK: bb1([[RESULT:%.*]] : $Int):
// CHECK: store [[RESULT]] to [trivial] [[PAYLOAD_ADDR]] : $*Int
// CHECK: inject_enum_addr [[ADDR]] : $*Optional<Int>, #Optional.some!enumelt
// CHECK: br bb2
// CHECK: bb2:
// CHECK-NEXT: = tuple ()
// CHECK-NEXT: return
// CHECK: bb3([[ERR:%.*]] : @owned $any Error):
// CHECK: destroy_value [[ERR]] : $any Error
// CHECK: inject_enum_addr [[ADDR]] : $*Optional<Int>, #Optional.none!enumelt
// CHECK: br bb2
// CHECK: }
func optional_to_existential_cast_RETURNED() -> Any {
return try? {() throws in 3 }()
}
|
