74 lines
1.1 KiB
Rust
74 lines
1.1 KiB
Rust
#![feature(test)]
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extern crate test;
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extern crate rand;
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#[macro_use]
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extern crate crunchy;
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use test::{Bencher, black_box};
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use rand::Rng;
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fn random_data() -> [u8; 256] {
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let mut res = [0u8; 256];
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rand::thread_rng().fill_bytes(&mut res);
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res
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}
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#[bench]
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fn forwards_with_crunchy(b: &mut Bencher) {
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let mut data = random_data();
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b.iter(|| {
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let other_data = random_data();
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unroll! {
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for i in 0..255 {
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data[i] |= other_data[i];
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}
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}
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});
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black_box(data);
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}
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#[bench]
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fn backwards_with_crunchy(b: &mut Bencher) {
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let mut data = random_data();
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b.iter(|| {
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let other_data = random_data();
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unroll! {
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for i in 0..255 {
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data[255-i] |= other_data[255-i];
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}
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}
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});
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black_box(data);
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}
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#[bench]
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fn forwards_without_crunchy(b: &mut Bencher) {
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let mut data = random_data();
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b.iter(|| {
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let other_data = random_data();
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for i in 0..255 {
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data[i] |= other_data[i];
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}
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});
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black_box(data);
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}
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#[bench]
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fn backwards_without_crunchy(b: &mut Bencher) {
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let mut data = random_data();
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b.iter(|| {
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let other_data = random_data();
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for i in 0..255 {
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data[255-i] |= other_data[255-i];
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}
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});
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black_box(data);
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}
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