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
|
- // MIR for `opt2` before EarlyOtherwiseBranch
+ // MIR for `opt2` after EarlyOtherwiseBranch
fn opt2(_1: Option2<u32>, _2: Option2<u32>, _3: Option2<u32>) -> u32 {
debug x => _1;
debug y => _2;
debug z => _3;
let mut _0: u32;
let mut _4: (Option2<u32>, Option2<u32>, Option2<u32>);
let mut _5: Option2<u32>;
let mut _6: Option2<u32>;
let mut _7: Option2<u32>;
let mut _8: isize;
let mut _9: isize;
let mut _10: isize;
let mut _11: isize;
let mut _12: isize;
let mut _13: isize;
let mut _14: isize;
let _15: u32;
let _16: u32;
let _17: u32;
+ let mut _18: isize;
+ let mut _19: bool;
scope 1 {
debug a => _15;
debug b => _16;
debug c => _17;
}
bb0: {
StorageLive(_4);
StorageLive(_5);
_5 = move _1;
StorageLive(_6);
_6 = move _2;
StorageLive(_7);
_7 = move _3;
_4 = (move _5, move _6, move _7);
StorageDead(_7);
StorageDead(_6);
StorageDead(_5);
_14 = discriminant((_4.0: Option2<u32>));
- switchInt(move _14) -> [0: bb2, 1: bb4, 2: bb6, otherwise: bb12];
+ StorageLive(_18);
+ _18 = discriminant((_4.1: Option2<u32>));
+ StorageLive(_19);
+ _19 = Ne(copy _14, move _18);
+ StorageDead(_18);
+ switchInt(move _19) -> [0: bb10, otherwise: bb1];
}
bb1: {
+ StorageDead(_19);
_0 = const 1_u32;
- goto -> bb11;
+ goto -> bb8;
}
bb2: {
- _9 = discriminant((_4.1: Option2<u32>));
- switchInt(move _9) -> [0: bb3, otherwise: bb1];
- }
-
- bb3: {
_8 = discriminant((_4.2: Option2<u32>));
- switchInt(move _8) -> [0: bb10, otherwise: bb1];
+ switchInt(move _8) -> [0: bb7, otherwise: bb1];
}
- bb4: {
- _11 = discriminant((_4.1: Option2<u32>));
- switchInt(move _11) -> [1: bb5, otherwise: bb1];
- }
-
- bb5: {
+ bb3: {
_10 = discriminant((_4.2: Option2<u32>));
- switchInt(move _10) -> [1: bb9, otherwise: bb1];
+ switchInt(move _10) -> [1: bb6, otherwise: bb1];
}
- bb6: {
- _13 = discriminant((_4.1: Option2<u32>));
- switchInt(move _13) -> [2: bb7, otherwise: bb1];
- }
-
- bb7: {
+ bb4: {
_12 = discriminant((_4.2: Option2<u32>));
- switchInt(move _12) -> [2: bb8, otherwise: bb1];
+ switchInt(move _12) -> [2: bb5, otherwise: bb1];
}
- bb8: {
+ bb5: {
_0 = const 3_u32;
- goto -> bb11;
+ goto -> bb8;
}
- bb9: {
+ bb6: {
_0 = const 2_u32;
- goto -> bb11;
+ goto -> bb8;
}
- bb10: {
+ bb7: {
StorageLive(_15);
_15 = copy (((_4.0: Option2<u32>) as Some).0: u32);
StorageLive(_16);
_16 = copy (((_4.1: Option2<u32>) as Some).0: u32);
StorageLive(_17);
_17 = copy (((_4.2: Option2<u32>) as Some).0: u32);
_0 = const 0_u32;
StorageDead(_17);
StorageDead(_16);
StorageDead(_15);
- goto -> bb11;
+ goto -> bb8;
}
- bb11: {
+ bb8: {
StorageDead(_4);
return;
}
- bb12: {
+ bb9: {
unreachable;
+ }
+
+ bb10: {
+ StorageDead(_19);
+ switchInt(copy _14) -> [0: bb2, 1: bb3, 2: bb4, otherwise: bb9];
}
}
|
