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// Copyright 2017 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.
use test::Bencher;
// FIXME #13642 (these benchmarks should be in another place)
// Completely miscellaneous language-construct benchmarks.
// Static/dynamic method dispatch
struct Struct {
field: isize
}
trait Trait {
fn method(&self) -> isize;
}
impl Trait for Struct {
fn method(&self) -> isize {
self.field
}
}
#[bench]
fn trait_vtable_method_call(b: &mut Bencher) {
let s = Struct { field: 10 };
let t = &s as &Trait;
b.iter(|| {
t.method()
});
}
#[bench]
fn trait_static_method_call(b: &mut Bencher) {
let s = Struct { field: 10 };
b.iter(|| {
s.method()
});
}
// Overhead of various match forms
#[bench]
fn match_option_some(b: &mut Bencher) {
let x = Some(10);
b.iter(|| {
match x {
Some(y) => y,
None => 11
}
});
}
#[bench]
fn match_vec_pattern(b: &mut Bencher) {
let x = [1,2,3,4,5,6];
b.iter(|| {
match x {
[1,2,3,..] => 10,
_ => 11,
}
});
}
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