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Commit b1b0bc4
Auto merge of #145479 - Kmeakin:km/hardcode-char-is-control, r=joboet
Hard-code `char::is_control`
Split off from rust-lang/rust#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`.File tree
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