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
|
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// this tests move up progration, which is not yet implemented
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// check that codegen of assignment expressions is sane. Assignments
// tend to be absent in simple code, so subtle breakage in them can
// leave a quite hard-to-find trail of destruction.
fn main() {
let nodrop_x = false;
let nodrop_y;
nodrop_y = nodrop_x;
let drop_x : Option<Box<u32>> = None;
let drop_y;
drop_y = drop_x;
}
// END RUST SOURCE
// START rustc.node4.SimplifyCfg-initial.after.mir
// bb0: {
// StorageLive(_1);
// _1 = const false;
// StorageLive(_2);
// StorageLive(_3);
// _3 = _1;
// _2 = _3;
// StorageDead(_3);
// StorageLive(_4);
// _4 = std::option::Option<std::boxed::Box<u32>>::None;
// StorageLive(_5);
// StorageLive(_6);
// _6 = _4;
// replace(_5 <- _6) -> [return: bb1, unwind: bb5];
// }
// bb1: {
// drop(_6) -> [return: bb6, unwind: bb4];
// }
// bb2: {
// resume;
// }
// bb3: {
// drop(_4) -> bb2;
// }
// bb4: {
// drop(_5) -> bb3;
// }
// bb5: {
// drop(_6) -> bb4;
// }
// bb6: {
// StorageDead(_6);
// _0 = ();
// drop(_5) -> [return: bb7, unwind: bb3];
// }
// bb7: {
// StorageDead(_5);
// drop(_4) -> bb8;
// }
// bb8: {
// StorageDead(_4);
// StorageDead(_2);
// StorageDead(_1);
// return;
// }
// END rustc.node4.SimplifyCfg-initial.after.mir
|
