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// Copyright 2016 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.
// compile-flags: -C no-prepopulate-passes
#![crate_type = "lib"]
#![feature(core_intrinsics)]
use std::intrinsics::{likely,unlikely};
#[no_mangle]
pub fn check_likely(x: i32, y: i32) -> Option<i32> {
unsafe {
// CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 true)
if likely(x == y) {
None
} else {
Some(x + y)
}
}
}
#[no_mangle]
pub fn check_unlikely(x: i32, y: i32) -> Option<i32> {
unsafe {
// CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 false)
if unlikely(x == y) {
None
} else {
Some(x + y)
}
}
}
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