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
|
// Tests the new rules added by RFC 2396, including:
// - applying `#[target_feature]` to safe functions is allowed
// - calling functions with `#[target_feature]` is allowed in
// functions which have (at least) the same features
// - calling functions with `#[target_feature]` is allowed in
// unsafe contexts
// - functions with `#[target_feature]` can coerce to unsafe fn pointers
//@ check-pass
//@ only-x86_64
#![feature(target_feature_11)]
#[target_feature(enable = "sse2")]
const fn sse2() {}
#[cfg(target_feature = "sse2")]
const SSE2_ONLY: () = unsafe {
sse2();
};
#[target_feature(enable = "sse2")]
fn also_sse2() {
sse2();
}
#[target_feature(enable = "sse2")]
#[target_feature(enable = "avx")]
fn sse2_and_avx() {
sse2();
}
struct Foo;
impl Foo {
#[target_feature(enable = "sse2")]
fn sse2(&self) {
sse2();
}
}
fn main() {
if cfg!(target_feature = "sse2") {
unsafe {
sse2();
Foo.sse2();
}
}
let sse2_ptr: unsafe fn() = sse2;
}
|
