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
|
- // MIR for `dereference_indexing` before GVN
+ // MIR for `dereference_indexing` after GVN
fn dereference_indexing(_1: [u8; 2], _2: usize) -> () {
debug array => _1;
debug index => _2;
let mut _0: ();
let _3: &u8;
let _4: usize;
let mut _5: usize;
let _6: usize;
let mut _7: bool;
let _8: ();
let mut _9: u8;
scope 1 {
debug a => _3;
}
scope 2 {
debug i => _4;
}
bb0: {
StorageLive(_3);
- StorageLive(_4);
+ nop;
StorageLive(_5);
_5 = copy _2;
- _4 = Add(move _5, const 1_usize);
+ _4 = Add(copy _2, const 1_usize);
StorageDead(_5);
StorageLive(_6);
_6 = copy _4;
- _7 = Lt(copy _6, const 2_usize);
- assert(move _7, "index out of bounds: the length is {} but the index is {}", const 2_usize, copy _6) -> [success: bb1, unwind continue];
+ _7 = Lt(copy _4, const 2_usize);
+ assert(move _7, "index out of bounds: the length is {} but the index is {}", const 2_usize, copy _4) -> [success: bb1, unwind continue];
}
bb1: {
- _3 = &_1[_6];
- StorageDead(_4);
+ _3 = &_1[_4];
+ nop;
StorageLive(_8);
StorageLive(_9);
_9 = copy (*_3);
_8 = opaque::<u8>(move _9) -> [return: bb2, unwind continue];
}
bb2: {
StorageDead(_9);
StorageDead(_8);
_0 = const ();
StorageDead(_6);
StorageDead(_3);
return;
}
}
|
