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b573e10d21
rust/library/alloc
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bors b573e10d21 Auto merge of #98553 - the8472:next_chunk_opt, r=Mark-Simulacrum 
Optimized vec::IntoIter::next_chunk impl

```
x86_64v1, default
test vec::bench_next_chunk                               ... bench:         696 ns/iter (+/- 22)
x86_64v1, pr
test vec::bench_next_chunk                               ... bench:         309 ns/iter (+/- 4)

znver2, default
test vec::bench_next_chunk                               ... bench:      17,272 ns/iter (+/- 117)
znver2, pr
test vec::bench_next_chunk                               ... bench:         211 ns/iter (+/- 3)
```

On znver2 the default impl seems to be slow due to different inlining decisions. It goes through `core::array::iter_next_chunk`
which has a deep call tree.
2022-07-27 01:12:30 +00:00
..
benches Optimized vec::IntoIter::next_chunk impl 2022-07-26 20:31:43 +02:00
src Auto merge of #98553 - the8472:next_chunk_opt, r=Mark-Simulacrum 2022-07-27 01:12:30 +00:00
tests Auto merge of #98553 - the8472:next_chunk_opt, r=Mark-Simulacrum 2022-07-27 01:12:30 +00:00
Cargo.toml Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00