rust/library/core/src/char/methods.rs, branch autohttps://github.com/rust-lang/rust
http://git.dreamy.place/mirrors/rust/atom?h=auto2025-09-07T13:21:24+00:00optimization: Don't include ASCII characters in Unicode tables2025-09-07T13:21:24+00:00Karl Meakinkarl.meakin@arm.com2025-08-02T22:32:10+00:00urn:sha1:a8c669461f0c71985c72dd5b05f70b8d4d149e3b
The ASCII subset of Unicode is fixed and will never change, so we don't
need to generate tables for it with every new Unicode version. This
saves a few bytes of static data and speeds up `char::is_control` and
`char::is_grapheme_extended` on ASCII inputs.
Since the table lookup functions exported from the `unicode` module will
give nonsensical errors on ASCII input (and in fact will panic in debug
mode), I had to add some private wrapper methods to `char` which check
for ASCII-ness first.
Auto merge of #145479 - Kmeakin:km/hardcode-char-is-control, r=joboet2025-08-30T14:18:21+00:00borsbors@rust-lang.org2025-08-30T14:18:21+00:00urn:sha1:0f506968010fa987b0d134034d0ccab9eecd9120
Hard-code `char::is_control`
Split off from https://github.com/rust-lang/rust/pull/145219
According to
https://www.unicode.org/policies/stability_policy.html#Property_Value, the set of codepoints in `Cc` will never change. So we can hard-code the patterns to match against instead of using a table.
This doesn't change the generated assembly, since the lookup table is small enough that[ LLVM is able to inline the whole search](https://godbolt.org/z/bG8dM37YG). But this does reduce the chance of regressions if LLVM's heuristics change in the future, and means less generated Rust code checked in to `unicode-data.rs`.
Optimize `char::encode_utf8`2025-08-17T00:22:48+00:00Karl Meakinkarl.meakin@arm.com2025-08-16T22:45:45+00:00urn:sha1:c9ce45cb1e11408c2f0c7cdc89f22bf54406eb20
Save a few instructions in `encode_utf8_raw_unchecked` by performing
manual CSE.
refactor: Hard-code `char::is_control`2025-08-16T00:46:30+00:00Karl Meakinkarl.meakin@arm.com2025-08-11T00:57:29+00:00urn:sha1:1bb9b151c9f9b5116254827f04add845aff33408
According to
https://www.unicode.org/policies/stability_policy.html#Property_Value,
the set of codepoints in `Cc` will never change. So we can hard-code
the patterns to match against instead of using a table.
Optimize `char::is_alphanumeric`2025-08-06T23:08:11+00:00Karl Meakinkarl.meakin@arm.com2025-08-06T23:05:22+00:00urn:sha1:bf5020937f17fd4c2f8ae5e7703fd9b8d15f0502
Avoid an unnecessary call to `unicode::Alphabetic` when `self` is an
ASCII digit (ie `0..=9`).
Add diagnostic items for Clippy2025-06-20T15:53:09+00:00Samuel Tardieusam@rfc1149.net2025-06-20T10:25:09+00:00urn:sha1:6a9f223f0030729560fd60fbd112e3e6e81ae2a9Add assert_unsafe_precondition!()s to as_ascii_unchecked() methods2025-05-16T12:54:02+00:00sam skeochdjscythe@noreply.codeberg.org2025-05-13T13:55:03+00:00urn:sha1:101e24a223f818e17d2c68298d48d4e6008c02aaAdd as_ascii_unchecked() methods to char, str, and u82025-05-16T12:53:32+00:00sam skeochdjscythe@noreply.codeberg.org2025-02-22T17:22:57+00:00urn:sha1:7d9f437f993e213c1f9aeb9c07454f6fd1648821Auto merge of #139279 - BoxyUwU:bump-boostrap, r=jieyouxu2025-04-10T00:43:25+00:00borsbors@rust-lang.org2025-04-10T00:43:25+00:00urn:sha1:6813f955a616999109ff69c48bbad6be33c6cdb3
Bump boostrap compiler to new beta
try-job: `*msvc*`
replace version placeholder2025-04-09T11:29:59+00:00Boxyrust@boxyuwu.dev2025-03-31T17:09:32+00:00urn:sha1:a6c2ec04b456d600b42b0c7286af38044f19a9a6