resolve: Improve performance #33064
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resolve: Improve performance #33064
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jseyfried
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@bors r+ |
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📌 Commit 6ae8027 has been approved by |
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Apr 18, 2016
resolve: Improve performance This fixes #33061 by speeding up searchs through all traits in scope, a bottleneck in `resolve`. According to my measurements, this PR improves resolution performance by a factor of 3.4x on `librustc`, which almost completely reverses the 3.75x performance regression reported in #33061. r? @eddyb
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@eddyb thanks! The regression is currently in beta -- do you think we should beta-nominate this? |
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Ordinarily we wouldn't backport a pure performance change, but approved for beta because:
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This fixes #33061 by speeding up searchs through all traits in scope, a bottleneck in
resolve.According to my measurements, this PR improves resolution performance by a factor of 3.4x on
librustc, which almost completely reverses the 3.75x performance regression reported in #33061.r? @eddyb