A drive-by rewrite of `give_region_a_name()` by amandasystems · Pull Request #120704 · rust-lang/rust
This rewrite makes the cache-updating nature of the function slightly clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows the map once, but in this context the performance impact is almost certainly completely negligible.
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Feb 8, 2024matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 8, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 8, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 8, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 8, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
bors added a commit to rust-lang-ci/rust that referenced this pull request
Feb 8, 2024…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#113026 (Introduce `run-make` V2 infrastructure, a `run_make_support` library and port over 2 tests as example) - rust-lang#120589 (std::thread::available_parallelism merging linux/android/freebsd version) - rust-lang#120590 (Remove unused args from functions) - rust-lang#120596 ([rustdoc] Correctly generate path for non-local items in source code pages) - rust-lang#120693 (Invert diagnostic lints.) - rust-lang#120704 (A drive-by rewrite of `give_region_a_name()`) - rust-lang#120750 (No need to take `ImplTraitContext` by ref) - rust-lang#120765 (Reorder diagnostics API) - rust-lang#120772 (Remove myself from review rotation.) - rust-lang#120783 (Add release note for new ambiguous_wide_pointer_comparisons lint) Failed merges: - rust-lang#120782 (Fix mir pass ICE in the presence of other errors) r? `@ghost` `@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 9, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 9, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
bors added a commit to rust-lang-ci/rust that referenced this pull request
Feb 9, 2024…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#120308 (core/time: avoid divisions in Duration::new) - rust-lang#120596 ([rustdoc] Correctly generate path for non-local items in source code pages) - rust-lang#120693 (Invert diagnostic lints.) - rust-lang#120704 (A drive-by rewrite of `give_region_a_name()`) - rust-lang#120809 (Use `transmute_unchecked` in `NonZero::new`.) - rust-lang#120817 (Fix more `ty::Error` ICEs in MIR passes) - rust-lang#120828 (Fix `ErrorGuaranteed` unsoundness with stash/steal.) r? `@ghost` `@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request
Feb 9, 2024…write, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
bors added a commit to rust-lang-ci/rust that referenced this pull request
Feb 9, 2024…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#113026 (Introduce `run-make` V2 infrastructure, a `run_make_support` library and port over 2 tests as example) - rust-lang#113671 (Make privacy visitor use types more (instead of HIR)) - rust-lang#120308 (core/time: avoid divisions in Duration::new) - rust-lang#120693 (Invert diagnostic lints.) - rust-lang#120704 (A drive-by rewrite of `give_region_a_name()`) - rust-lang#120809 (Use `transmute_unchecked` in `NonZero::new`.) - rust-lang#120817 (Fix more `ty::Error` ICEs in MIR passes) - rust-lang#120828 (Fix `ErrorGuaranteed` unsoundness with stash/steal.) - rust-lang#120831 (Startup objects disappearing from sysroot) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request
Feb 9, 2024Rollup merge of rust-lang#120704 - amandasystems:silly-region-name-rewrite, r=compiler-errors A drive-by rewrite of `give_region_a_name()` This drive-by rewrite makes the cache-updating nature of the method clearer, using the Entry API into the hash table for region names to capture the update-insert nature of the method. May be marginally more efficient since it only runtime-borrows and indexes the map once, but in this context the performance impact is almost certainly completely negligible. Note that this commit should preserve all externally visible behaviour. Notably, it preserves the debug logging: 1. printing even in the case of a `None` for the new computed name, and 2. only printing on new values, begin silent on reused values
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