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Avoid repeated interning of static strings. #60467
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r? @davidtwco (rust_highfive has picked a reviewer for you, use r? to override) |
`file_metadata_raw` interns the strings `"<unknown>"` and `""` very frequently. This commit avoids that, which reduces the number of symbols interned significantly and reduces instruction counts by up to 0.5% on some workloads.
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Centril
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May 2, 2019
…r=davidtwco Avoid repeated interning of static strings. `file_metadata_raw` interns the strings `"<unknown>"` and `""` very frequently. This commit avoids that, which reduces the number of symbols interned significantly and reduces instruction counts by up to 0.5% on some workloads.
bors
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May 3, 2019
Rollup of 11 pull requests Successful merges: - #59928 (Make deprecation lint `ambiguous_associated_items` deny-by-default) - #60135 (Added arm-none-eabi target) - #60220 (report fatal errors during doctest parsing) - #60373 (Tidy: ensure lang features are sorted by since) - #60393 ( Do not suggest incorrect syntax on pattern type error due to borrow) - #60401 (Rename `RUST_LOG` to `RUSTC_LOG`) - #60409 (Require a trait in the bounds of existential types) - #60449 (Constrain all regions in the concrete type for an opaque type) - #60455 (Resolve match arm ty when arms diverge) - #60457 (Const prop refactoring) - #60467 (Avoid repeated interning of static strings.) Failed merges: r? @ghost
Centril
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May 3, 2019
…r=davidtwco Avoid repeated interning of static strings. `file_metadata_raw` interns the strings `"<unknown>"` and `""` very frequently. This commit avoids that, which reduces the number of symbols interned significantly and reduces instruction counts by up to 0.5% on some workloads.
bors
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May 3, 2019
Rollup of 12 pull requests Successful merges: - #59928 (Make deprecation lint `ambiguous_associated_items` deny-by-default) - #60220 (report fatal errors during doctest parsing) - #60373 (Tidy: ensure lang features are sorted by since) - #60388 (Disallow non-explicit elided lifetimes in async fn) - #60393 ( Do not suggest incorrect syntax on pattern type error due to borrow) - #60401 (Rename `RUST_LOG` to `RUSTC_LOG`) - #60409 (Require a trait in the bounds of existential types) - #60455 (Resolve match arm ty when arms diverge) - #60457 (Const prop refactoring) - #60467 (Avoid repeated interning of static strings.) - #60478 (minor compiler doc tweaks) - #60501 (Propagate mutability from arguments to local bindings in async fn) Failed merges: r? @ghost
nnethercote
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May 20, 2019
This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR rust-lang#60467 improved this code somewhat; this is a further improvement.
bors
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May 20, 2019
Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR #60467 improved this code somewhat; this is a further improvement. r? @davidtwco
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May 21, 2019
…oerister Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR #60467 improved this code somewhat; this is a further improvement. r? @davidtwco
Centril
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May 21, 2019
… r=michaelwoerister Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR rust-lang#60467 improved this code somewhat; this is a further improvement. r? @davidtwco
Centril
added a commit
to Centril/rust
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May 21, 2019
… r=michaelwoerister Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR rust-lang#60467 improved this code somewhat; this is a further improvement. r? @davidtwco
Centril
added a commit
to Centril/rust
that referenced
this pull request
May 21, 2019
… r=michaelwoerister Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR rust-lang#60467 improved this code somewhat; this is a further improvement. r? @davidtwco
Centril
added a commit
to Centril/rust
that referenced
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May 22, 2019
… r=michaelwoerister Avoid symbol interning in `file_metadata`. This commit changes `created_files` so it uses strings directly as keys, rather than symbols derived from the strings. This avoids the cost of having to do the hash table lookups to produce the symbols from the strings. The commit also uses `entry` to avoid doing a repeated hash table lookup (`get` + `insert`). Note that PR rust-lang#60467 improved this code somewhat; this is a further improvement. r? @davidtwco
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file_metadata_rawinterns the strings"<unknown>"and""veryfrequently. This commit avoids that, which reduces the number of symbols
interned significantly and reduces instruction counts by up to 0.5% on
some workloads.