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| author | Eduard-Mihai Burtescu <edy.burt@gmail.com> | 2016-10-19 07:59:59 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2016-10-19 07:59:59 +0300 |
| commit | 6e3a72d256d862904703e429499356bfea5cf5e8 (patch) | |
| tree | 9cdd03d9517493127a8c07bc25ed01c34acac61a /src/libsyntax/parse | |
| parent | fdcdcac66c65cdf49173f31b858cae467c27b9c4 (diff) | |
| parent | ab5dcff1314a800b03fd179a22610f4640a9d071 (diff) | |
| download | rust-6e3a72d256d862904703e429499356bfea5cf5e8.tar.gz rust-6e3a72d256d862904703e429499356bfea5cf5e8.zip | |
Rollup merge of #37108 - nnethercote:substs-experimentation, r=eddyb
Optimize `Substs::super_fold_with`. This speeds up some of the rustc-benchmarks by up to ~4%. ``` futures-rs-test 4.467s vs 4.387s --> 1.018x faster (variance: 1.001x, 1.006x) helloworld 0.242s vs 0.246s --> 0.980x faster (variance: 1.007x, 1.013x) html5ever-2016- 7.664s vs 7.630s --> 1.004x faster (variance: 1.008x, 1.006x) hyper.0.5.0 5.218s vs 5.133s --> 1.016x faster (variance: 1.013x, 1.008x) inflate-0.1.0 5.040s vs 5.103s --> 0.988x faster (variance: 1.005x, 1.008x) issue-32062-equ 0.361s vs 0.345s --> 1.047x faster (variance: 1.008x, 1.019x) issue-32278-big 1.874s vs 1.850s --> 1.013x faster (variance: 1.020x, 1.018x) jld-day15-parse 1.569s vs 1.508s --> 1.040x faster (variance: 1.009x, 1.003x) piston-image-0. 12.210s vs 11.903s --> 1.026x faster (variance: 1.045x, 1.010x) regex.0.1.30 2.568s vs 2.555s --> 1.005x faster (variance: 1.018x, 1.044x) rust-encoding-0 2.139s vs 2.135s --> 1.001x faster (variance: 1.012x, 1.005x) syntex-0.42.2 33.099s vs 32.353s --> 1.023x faster (variance: 1.003x, 1.028x) syntex-0.42.2-i 17.989s vs 17.431s --> 1.032x faster (variance: 1.009x, 1.018x) ``` r? @eddyb. I don't know how this interacts with the changes that dikaiosune has been working on.
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