bors 4a86c7907b Auto merge of #96605 - Urgau:string-retain-codegen, r=thomcc ... Improve codegen of String::retain method This pull-request improve the codegen of the `String::retain` method. Using `unwrap_unchecked` helps the optimizer to not generate a panicking path that will never be taken for valid UTF-8 like string. Using `encode_utf8` saves us from an expensive call to `memcpy`, as the optimizer is unable to realize that `ch_len <= 4` and so can generate much better assembly code. https://rust.godbolt.org/z/z73ohenfc		2022-05-21 01:56:51 +00:00
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benches	Avoid use of rand::thread_rng in stdlib benchmarks	2022-05-02 00:08:21 -07:00
src	Auto merge of #96605 - Urgau:string-retain-codegen, r=thomcc	2022-05-21 01:56:51 +00:00
tests	Rollup merge of #94126 - ssomers:alloc_prep_1, r=Mark-Simulacrum	2022-05-02 10:41:54 +09:00
Cargo.toml	Switch all libraries to the 2021 edition	2021-12-23 19:03:47 +08:00