File: volatile_order.rs

package info (click to toggle)
rustc-web 1.85.0%2Bdfsg3-1~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,759,988 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,056; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (18 lines) | stat: -rw-r--r-- 479 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
#![crate_type = "lib"]
#![feature(core_intrinsics)]

use std::intrinsics::*;

pub unsafe fn test_volatile_order() {
    let mut a: Box<u8> = Box::new(0);
    // CHECK: load volatile
    let x = volatile_load(&*a);
    // CHECK: load volatile
    let x = volatile_load(&*a);
    // CHECK: store volatile
    volatile_store(&mut *a, 12);
    // CHECK: store volatile
    unaligned_volatile_store(&mut *a, 12);
    // CHECK: llvm.memset.p0
    volatile_set_memory(&mut *a, 12, 1)
}