bors 86bd45979a Auto merge of #130223 - LaihoE:faster_str_replace, r=thomcc ... optimize str.replace Adds a fast path for str.replace for the ascii to ascii case. This allows for autovectorizing the code. Also should this instead be done with specialization? This way we could remove one branch. I think it is the kind of branch that is easy to predict though. Benchmark for the fast path (replace all "a" with "b" in the rust wikipedia article, using criterion) : | N | Speedup | Time New (ns) | Time Old (ns) | |----------|---------|---------------|---------------| | 2 | 2.03 | 13.567 | 27.576 | | 8 | 1.73 | 17.478 | 30.259 | | 11 | 2.46 | 18.296 | 45.055 | | 16 | 2.71 | 17.181 | 46.526 | | 37 | 4.43 | 18.526 | 81.997 | | 64 | 8.54 | 18.670 | 159.470 | | 200 | 9.82 | 29.634 | 291.010 | | 2000 | 24.34 | 81.114 | 1974.300 | | 20000 | 30.61 | 598.520 | 18318.000 | | 1000000 | 29.31 | 33458.000 | 980540.000 |		2024-10-17 16:20:02 +00:00
..
benches	Improve autovectorization of to_lowercase / to_uppercase functions	2024-09-23 11:31:29 +02:00
src	Auto merge of #130223 - LaihoE:faster_str_replace, r=thomcc	2024-10-17 16:20:02 +00:00
tests	update bootstrap configs	2024-10-15 20:30:23 -07:00
Cargo.toml	Update compiler-builtins to 0.1.133	2024-10-05 21:34:51 -05:00