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
|
- // MIR for `too_complex` before JumpThreading
+ // MIR for `too_complex` after JumpThreading
fn too_complex(_1: Result<i32, usize>) -> Option<i32> {
debug x => _1;
let mut _0: std::option::Option<i32>;
let mut _2: std::ops::ControlFlow<usize, i32>;
let mut _3: isize;
let _4: i32;
let mut _5: i32;
let _6: usize;
let mut _7: usize;
let mut _8: isize;
let _9: i32;
let mut _10: i32;
let _11: usize;
scope 1 {
debug v => _4;
}
scope 2 {
debug r => _6;
}
scope 3 {
debug v => _9;
}
scope 4 {
debug r => _11;
}
bb0: {
StorageLive(_2);
_3 = discriminant(_1);
switchInt(move _3) -> [0: bb3, 1: bb2, otherwise: bb1];
}
bb1: {
unreachable;
}
bb2: {
StorageLive(_6);
_6 = copy ((_1 as Err).0: usize);
StorageLive(_7);
_7 = copy _6;
_2 = ControlFlow::<usize, i32>::Break(move _7);
StorageDead(_7);
StorageDead(_6);
- goto -> bb4;
+ goto -> bb8;
}
bb3: {
StorageLive(_4);
_4 = copy ((_1 as Ok).0: i32);
StorageLive(_5);
_5 = copy _4;
_2 = ControlFlow::<usize, i32>::Continue(move _5);
StorageDead(_5);
StorageDead(_4);
goto -> bb4;
}
bb4: {
_8 = discriminant(_2);
- switchInt(move _8) -> [0: bb6, 1: bb5, otherwise: bb1];
+ goto -> bb6;
}
bb5: {
StorageLive(_11);
_11 = copy ((_2 as Break).0: usize);
_0 = Option::<i32>::None;
StorageDead(_11);
goto -> bb7;
}
bb6: {
StorageLive(_9);
_9 = copy ((_2 as Continue).0: i32);
StorageLive(_10);
_10 = copy _9;
_0 = Option::<i32>::Some(move _10);
StorageDead(_10);
StorageDead(_9);
goto -> bb7;
}
bb7: {
StorageDead(_2);
return;
+ }
+
+ bb8: {
+ _8 = discriminant(_2);
+ goto -> bb5;
}
}
|
