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
|
// MIR for `enumerated_loop` after PreCodegen
fn enumerated_loop(_1: &[T], _2: impl Fn(usize, &T)) -> () {
debug slice => _1;
debug f => _2;
let mut _0: ();
let mut _13: std::slice::Iter<'_, T>;
let mut _14: std::iter::Enumerate<std::slice::Iter<'_, T>>;
let mut _15: std::iter::Enumerate<std::slice::Iter<'_, T>>;
let mut _23: std::option::Option<(usize, &T)>;
let mut _26: &impl Fn(usize, &T);
let mut _27: (usize, &T);
let _28: ();
scope 1 {
debug iter => _15;
let _24: usize;
let _25: &T;
scope 2 {
debug i => _24;
debug x => _25;
}
scope 18 (inlined <Enumerate<std::slice::Iter<'_, T>> as Iterator>::next) {
let mut _16: &mut std::slice::Iter<'_, T>;
let mut _17: std::option::Option<&T>;
let mut _21: (usize, bool);
let mut _22: (usize, &T);
scope 19 {
let _20: usize;
scope 24 {
}
}
scope 20 {
scope 21 {
scope 27 (inlined <Option<(usize, &T)> as FromResidual<Option<Infallible>>>::from_residual) {
}
}
}
scope 22 {
scope 23 {
}
}
scope 25 (inlined <Option<&T> as Try>::branch) {
let mut _18: isize;
let _19: &T;
scope 26 {
}
}
}
}
scope 3 (inlined core::slice::<impl [T]>::iter) {
scope 4 (inlined std::slice::Iter::<'_, T>::new) {
let _3: usize;
let mut _5: std::ptr::NonNull<[T]>;
let mut _9: *mut T;
let mut _10: *mut T;
let mut _12: *const T;
scope 5 {
let _8: std::ptr::NonNull<T>;
scope 6 {
let _11: *const T;
scope 7 {
}
scope 12 (inlined without_provenance::<T>) {
}
scope 13 (inlined NonNull::<T>::as_ptr) {
}
scope 14 (inlined std::ptr::mut_ptr::<impl *mut T>::add) {
}
}
scope 8 (inlined <NonNull<[T]> as From<&[T]>>::from) {
scope 9 (inlined NonNull::<[T]>::from_ref) {
let mut _4: *const [T];
}
}
scope 10 (inlined NonNull::<[T]>::cast::<T>) {
let mut _6: *mut [T];
let mut _7: *const T;
scope 11 (inlined NonNull::<[T]>::as_ptr) {
}
}
}
}
}
scope 15 (inlined <std::slice::Iter<'_, T> as Iterator>::enumerate) {
scope 16 (inlined Enumerate::<std::slice::Iter<'_, T>>::new) {
}
}
scope 17 (inlined <Enumerate<std::slice::Iter<'_, T>> as IntoIterator>::into_iter) {
}
bb0: {
StorageLive(_13);
StorageLive(_3);
StorageLive(_8);
_3 = PtrMetadata(copy _1);
StorageLive(_5);
StorageLive(_4);
_4 = &raw const (*_1);
_5 = NonNull::<[T]> { pointer: move _4 };
StorageDead(_4);
StorageLive(_6);
StorageLive(_7);
_6 = copy _5 as *mut [T] (Transmute);
_7 = copy _6 as *const T (PtrToPtr);
_8 = NonNull::<T> { pointer: move _7 };
StorageDead(_7);
StorageDead(_6);
StorageDead(_5);
StorageLive(_11);
switchInt(const <T as std::mem::SizedTypeProperties>::IS_ZST) -> [0: bb1, otherwise: bb2];
}
bb1: {
StorageLive(_10);
StorageLive(_9);
_9 = copy _8 as *mut T (Transmute);
_10 = Offset(copy _9, copy _3);
StorageDead(_9);
_11 = move _10 as *const T (PtrToPtr);
StorageDead(_10);
goto -> bb3;
}
bb2: {
_11 = copy _3 as *const T (Transmute);
goto -> bb3;
}
bb3: {
StorageLive(_12);
_12 = copy _11;
_13 = std::slice::Iter::<'_, T> { ptr: copy _8, end_or_len: move _12, _marker: const ZeroSized: PhantomData<&T> };
StorageDead(_12);
StorageDead(_11);
StorageDead(_8);
StorageDead(_3);
_14 = Enumerate::<std::slice::Iter<'_, T>> { iter: copy _13, count: const 0_usize };
StorageDead(_13);
StorageLive(_15);
_15 = copy _14;
goto -> bb4;
}
bb4: {
StorageLive(_23);
StorageLive(_20);
StorageLive(_21);
StorageLive(_17);
StorageLive(_16);
_16 = &mut (_15.0: std::slice::Iter<'_, T>);
_17 = <std::slice::Iter<'_, T> as Iterator>::next(move _16) -> [return: bb5, unwind unreachable];
}
bb5: {
StorageDead(_16);
StorageLive(_18);
_18 = discriminant(_17);
switchInt(move _18) -> [0: bb6, 1: bb8, otherwise: bb11];
}
bb6: {
StorageDead(_18);
StorageDead(_17);
StorageDead(_21);
StorageDead(_20);
StorageDead(_23);
StorageDead(_15);
drop(_2) -> [return: bb7, unwind unreachable];
}
bb7: {
return;
}
bb8: {
_19 = move ((_17 as Some).0: &T);
StorageDead(_18);
StorageDead(_17);
_20 = copy (_15.1: usize);
_21 = AddWithOverflow(copy (_15.1: usize), const 1_usize);
assert(!move (_21.1: bool), "attempt to compute `{} + {}`, which would overflow", copy (_15.1: usize), const 1_usize) -> [success: bb9, unwind unreachable];
}
bb9: {
(_15.1: usize) = move (_21.0: usize);
StorageLive(_22);
_22 = (copy _20, copy _19);
_23 = Option::<(usize, &T)>::Some(move _22);
StorageDead(_22);
StorageDead(_21);
StorageDead(_20);
_24 = copy (((_23 as Some).0: (usize, &T)).0: usize);
_25 = copy (((_23 as Some).0: (usize, &T)).1: &T);
StorageLive(_26);
_26 = &_2;
StorageLive(_27);
_27 = (copy _24, copy _25);
_28 = <impl Fn(usize, &T) as Fn<(usize, &T)>>::call(move _26, move _27) -> [return: bb10, unwind unreachable];
}
bb10: {
StorageDead(_27);
StorageDead(_26);
StorageDead(_23);
goto -> bb4;
}
bb11: {
unreachable;
}
}
|
