Avoid a collection and iteration on empty passes #120853
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@bors r+ |
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next time, pls amend the commit with any formatter changes (or install the tidy hook in x.py setup) |
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Avoid a collection and iteration on empty passes Just some mini optimization I saw in the wild. This way, we avoid a `collect` and `map` on an empty `passes`. Honestly, I don't even think this is big enough of a change to make a benchmark, but I'd still like to see results. Based on [this book](https://nnethercote.github.io/perf-book/iterators.html#collect-and-extend)
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#120584 (For a rigid projection, recursively look at the self type's item bounds to fix the `associated_type_bounds` feature) - rust-lang#120589 (std::thread::available_parallelism merging linux/android/freebsd version) - rust-lang#120596 ([rustdoc] Correctly generate path for non-local items in source code pages) - rust-lang#120629 (Move some test files) - rust-lang#120846 (Update jobserver-rs to 0.1.28) - rust-lang#120850 (ast_lowering: Fix regression in `use ::{}` imports.) - rust-lang#120853 (Avoid a collection and iteration on empty passes) Failed merges: - rust-lang#120549 (modify alias-relate to also normalize ambiguous opaques) r? `@ghost` `@rustbot` modify labels: rollup
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…iaskrgr Rollup of 6 pull requests Successful merges: - rust-lang#120584 (For a rigid projection, recursively look at the self type's item bounds to fix the `associated_type_bounds` feature) - rust-lang#120596 ([rustdoc] Correctly generate path for non-local items in source code pages) - rust-lang#120629 (Move some test files) - rust-lang#120846 (Update jobserver-rs to 0.1.28) - rust-lang#120850 (ast_lowering: Fix regression in `use ::{}` imports.) - rust-lang#120853 (Avoid a collection and iteration on empty passes) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#120853 - blyxyas:no-collect, r=cjgillot Avoid a collection and iteration on empty passes Just some mini optimization I saw in the wild. This way, we avoid a `collect` and `map` on an empty `passes`. Honestly, I don't even think this is big enough of a change to make a benchmark, but I'd still like to see results. Based on [this book](https://nnethercote.github.io/perf-book/iterators.html#collect-and-extend)
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Just some mini optimization I saw in the wild. This way, we avoid a
collectandmapon an emptypasses. Honestly, I don't even think this is big enough of a change to make a benchmark, but I'd still like to see results.Based on this book