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Use std::hint::black_box consistently.

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This also removes the `#![feature(bench_black_box)]`. This was
stabilized in Rust 1.66 and anyone building benchmarks will be
on that or later (as they previously would have been on nightly).

This also allows building `cargo build --all-targets` on stable
Rust as it no longer dies when hitting the feature addition in
the benchmarks.
This commit is contained in:
Bruce Mitchener 2023-08-14 11:01:01 +07:00
parent 706caf52c3
commit 9042d1424c
2 changed files with 2 additions and 3 deletions
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4
benches/core/matrix.rs
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@ -142,7 +142,7 @@ fn iter(bench: &mut criterion::Criterion) {
bench.bench_function("iter", move |bh| { bench.bench_function("iter", move |bh| {
bh.iter(|| { bh.iter(|| {
for value in a.iter() { for value in a.iter() {
criterion::black_box(value); std::hint::black_box(value);
} }
}) })
}); });
@ -154,7 +154,7 @@ fn iter_rev(bench: &mut criterion::Criterion) {
bench.bench_function("iter_rev", move |bh| { bench.bench_function("iter_rev", move |bh| {
bh.iter(|| { bh.iter(|| {
for value in a.iter().rev() { for value in a.iter().rev() {
criterion::black_box(value); std::hint::black_box(value);
} }
}) })
}); });

1
benches/lib.rs
View File

@ -1,4 +1,3 @@
#![feature(bench_black_box)]
#![allow(unused_macros)] #![allow(unused_macros)]
extern crate nalgebra as na; extern crate nalgebra as na;