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
|
- // MIR for `arithmetic_checked` before GVN
+ // MIR for `arithmetic_checked` after GVN
fn arithmetic_checked(_1: u64) -> () {
debug x => _1;
let mut _0: ();
let _2: ();
let mut _3: u64;
let mut _4: u64;
let mut _5: (u64, bool);
let _6: ();
let mut _7: u64;
let mut _8: u64;
let mut _9: (u64, bool);
let _10: ();
let mut _11: u64;
let mut _12: u64;
let mut _13: (u64, bool);
let _14: ();
let mut _15: u64;
let mut _16: u64;
let mut _17: (u64, bool);
bb0: {
StorageLive(_2);
StorageLive(_3);
StorageLive(_4);
_4 = _1;
- _5 = CheckedAdd(_4, const 0_u64);
- assert(!move (_5.1: bool), "attempt to compute `{} + {}`, which would overflow", move _4, const 0_u64) -> [success: bb1, unwind continue];
+ _5 = CheckedAdd(_1, const 0_u64);
+ assert(!move (_5.1: bool), "attempt to compute `{} + {}`, which would overflow", _1, const 0_u64) -> [success: bb1, unwind continue];
}
bb1: {
_3 = move (_5.0: u64);
StorageDead(_4);
_2 = opaque::<u64>(move _3) -> [return: bb2, unwind continue];
}
bb2: {
StorageDead(_3);
StorageDead(_2);
StorageLive(_6);
StorageLive(_7);
StorageLive(_8);
_8 = _1;
- _9 = CheckedSub(_8, const 0_u64);
- assert(!move (_9.1: bool), "attempt to compute `{} - {}`, which would overflow", move _8, const 0_u64) -> [success: bb3, unwind continue];
+ _9 = CheckedSub(_1, const 0_u64);
+ assert(!move (_9.1: bool), "attempt to compute `{} - {}`, which would overflow", _1, const 0_u64) -> [success: bb3, unwind continue];
}
bb3: {
_7 = move (_9.0: u64);
StorageDead(_8);
_6 = opaque::<u64>(move _7) -> [return: bb4, unwind continue];
}
bb4: {
StorageDead(_7);
StorageDead(_6);
StorageLive(_10);
StorageLive(_11);
StorageLive(_12);
_12 = _1;
- _13 = CheckedMul(_12, const 0_u64);
- assert(!move (_13.1: bool), "attempt to compute `{} * {}`, which would overflow", move _12, const 0_u64) -> [success: bb5, unwind continue];
+ _13 = CheckedMul(_1, const 0_u64);
+ assert(!move (_13.1: bool), "attempt to compute `{} * {}`, which would overflow", _1, const 0_u64) -> [success: bb5, unwind continue];
}
bb5: {
_11 = move (_13.0: u64);
StorageDead(_12);
_10 = opaque::<u64>(move _11) -> [return: bb6, unwind continue];
}
bb6: {
StorageDead(_11);
StorageDead(_10);
StorageLive(_14);
StorageLive(_15);
StorageLive(_16);
_16 = _1;
- _17 = CheckedMul(_16, const 1_u64);
- assert(!move (_17.1: bool), "attempt to compute `{} * {}`, which would overflow", move _16, const 1_u64) -> [success: bb7, unwind continue];
+ _17 = CheckedMul(_1, const 1_u64);
+ assert(!move (_17.1: bool), "attempt to compute `{} * {}`, which would overflow", _1, const 1_u64) -> [success: bb7, unwind continue];
}
bb7: {
_15 = move (_17.0: u64);
StorageDead(_16);
_14 = opaque::<u64>(move _15) -> [return: bb8, unwind continue];
}
bb8: {
StorageDead(_15);
StorageDead(_14);
_0 = const ();
return;
}
}
|
