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
|
//@ test-mir-pass: DataflowConstProp
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
use std::marker::PhantomData;
use std::mem::offset_of;
struct Alpha {
x: u8,
y: u16,
z: Beta,
}
struct Beta(u8, u8);
struct Gamma<T> {
x: u8,
y: u16,
_t: T,
}
#[repr(C)]
struct Delta<T> {
_phantom: PhantomData<T>,
x: u8,
y: u16,
}
// EMIT_MIR offset_of.concrete.DataflowConstProp.diff
// CHECK-LABEL: fn concrete(
fn concrete() {
// CHECK: debug x => [[x:_.*]];
// CHECK: debug y => [[y:_.*]];
// CHECK: debug z0 => [[z0:_.*]];
// CHECK: debug z1 => [[z1:_.*]];
// CHECK: [[x]] = const 4_usize
let x = offset_of!(Alpha, x);
// CHECK: [[y]] = const 0_usize
let y = offset_of!(Alpha, y);
// CHECK: [[z0]] = const 2_usize
let z0 = offset_of!(Alpha, z.0);
// CHECK: [[z1]] = const 3_usize
let z1 = offset_of!(Alpha, z.1);
}
// EMIT_MIR offset_of.generic.DataflowConstProp.diff
// CHECK-LABEL: fn generic(
fn generic<T>() {
// CHECK: debug gx => [[gx:_.*]];
// CHECK: debug gy => [[gy:_.*]];
// CHECK: debug dx => [[dx:_.*]];
// CHECK: debug dy => [[dy:_.*]];
// CHECK: [[gx]] = OffsetOf(Gamma<T>, [(0, 0)]);
let gx = offset_of!(Gamma<T>, x);
// CHECK: [[gy]] = OffsetOf(Gamma<T>, [(0, 1)]);
let gy = offset_of!(Gamma<T>, y);
// CHECK: [[dx]] = const 0_usize
let dx = offset_of!(Delta<T>, x);
// CHECK: [[dy]] = const 2_usize
let dy = offset_of!(Delta<T>, y);
}
fn main() {
concrete();
generic::<()>();
}
|
