Improve performance of String::from_str_in
#231
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CI should pass if rebased on top of #232. |
fitzgen
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Feb 14, 2024
overlookmotel
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Rebased on top of #229 (which is now rebased on top of main). Have done it that way as otherwise there's merge conflicts. Hope that's OK. |
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Thanks! |
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I investigated performance of
String::from_str_in. Turns out that even afterString::push_stris optimized (#229), the compiler does not figure out that bounds checks and various calculations can be elided.So this change makes
from_str_inabout 18% faster for small strings.PR includes a benchmark to demonstrate this.
Built on top of #229. If you're willing to merge, please merge that one first.
Sorry for sudden barrage of issues and PRs!