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Use branchless binary search to find_min_version #28

Merged
merged 1 commit into from
Jul 6, 2019
Merged

Use branchless binary search to find_min_version #28

merged 1 commit into from
Jul 6, 2019

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pickfire
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@pickfire pickfire commented Jul 6, 2019

Constant search time and no unpredictable conditional branches
Benchmark results: 39 ns/iter -> 2 ns/iter (including multiple call)

Based on rust-lang/rust#45333
Inspired by https://raw.github.com/RustStudy/rust_daily_news/master/img/%E4%BA%8C%E7%BB%B4%E7%A0%81%E7%94%9F%E6%88%90.png

@pickfire
Use branchless binary search to find_min_version
81404ac 
Constant search time and no unpredictable conditional branches
Benchmark results: 39 ns/iter -> 2 ns/iter (including multiple call)

Based on rust-lang/rust#45333
Inspired by https://raw.github.com/RustStudy/rust_daily_news/master/img/%E4%BA%8C%E7%BB%B4%E7%A0%81%E7%94%9F%E6%88%90.png
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Coverage Status

Coverage increased (+0.007%) to 93.5% when pulling 81404ac on pickfire:branchless into a585403 on kennytm:master.

@kennytm
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kennytm commented Jul 6, 2019

Thanks!

@kennytm kennytm merged commit 8ee1918 into kennytm:master Jul 6, 2019
@pickfire pickfire deleted the branchless branch July 7, 2019 14:41
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