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| author | Alex Crichton <alex@alexcrichton.com> | 2018-05-10 11:35:27 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-05-10 11:35:27 -0500 |
| commit | e23ec4b6f08828dbced71779eb9b390d85f1898b (patch) | |
| tree | d2eb7ccfac60c573b57c161453a974642b7aa2c8 /src/liballoc | |
| parent | a77ba86424cae163edf36415a2933c6a8b703ee3 (diff) | |
| parent | 78262e700dc6a7b57e376742f344e80115d2d3f2 (diff) | |
| download | rust-e23ec4b6f08828dbced71779eb9b390d85f1898b.tar.gz rust-e23ec4b6f08828dbced71779eb9b390d85f1898b.zip | |
Rollup merge of #50565 - nnethercote:try_mark_green, r=michaelwoerister
Use SmallVec for DepNodeIndex within dep_graph. This avoids a decent number of allocations, enough to speed up incremental runs of many rustc-benchmarks, the best by 2%. Here are the rustc-perf benchmarks that showed an improvement of at least 1% on one run: ``` unused-warnings-check avg: -1.7% min: -2.4% max: 0.0% unused-warnings-opt avg: -1.4% min: -2.0% max: 0.0% unused-warnings avg: -1.4% min: -2.0% max: -0.0% tokio-webpush-simple-check avg: -1.0% min: -1.7% max: 0.0% futures-opt avg: -0.9% min: -1.6% max: 0.0% encoding avg: -1.2% min: -1.6% max: -0.6% encoding-check avg: -0.9% min: -1.6% max: 0.0% encoding-opt avg: -0.8% min: -1.6% max: -0.1% futures avg: -0.9% min: -1.5% max: 0.0% futures-check avg: -0.9% min: -1.5% max: 0.1% regression-31157-check avg: -0.9% min: -1.5% max: 0.0% regex avg: -0.6% min: -1.4% max: 0.0% regression-31157-opt avg: -0.5% min: -1.4% max: 0.1% regression-31157 avg: -0.7% min: -1.4% max: 0.2% regex-opt avg: -0.6% min: -1.4% max: 0.1% hyper-check avg: -0.8% min: -1.4% max: -0.1% regex-check avg: -1.0% min: -1.4% max: 0.0% hyper-opt avg: -0.7% min: -1.4% max: -0.1% hyper avg: -0.7% min: -1.3% max: 0.1% piston-image-opt avg: -0.4% min: -1.3% max: 0.0% tokio-webpush-simple-opt avg: -0.3% min: -1.3% max: 0.0% piston-image-check avg: -0.5% min: -1.3% max: -0.0% syn-opt avg: -0.5% min: -1.3% max: 0.0% clap-rs-check avg: -0.3% min: -1.3% max: 0.2% piston-image avg: -0.5% min: -1.2% max: 0.1% syn avg: -0.5% min: -1.2% max: 0.1% syn-check avg: -0.6% min: -1.2% max: -0.1% issue-46449-opt avg: -0.4% min: -1.2% max: -0.1% parser-check avg: -0.7% min: -1.2% max: 0.1% issue-46449 avg: -0.5% min: -1.2% max: -0.0% ```
Diffstat (limited to 'src/liballoc')
0 files changed, 0 insertions, 0 deletions