#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(likely_unlikely)]
use core::hint::unlikely;
fn foo(x: i32) {
    if unlikely(x > 0) {
        println!("this branch is unlikely to be taken");
    } else {
        println!("this branch is likely to be taken");
    }
    match unlikely(x > 0) {
        true => println!("this branch is unlikely to be taken"),
        false => println!("this branch is likely to be taken"),
    }
    let cond = unlikely(x != 0);
    if cond {
        println!("this branch is likely to be taken");
    }
}
fn main() {}