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| author | bors <bors@rust-lang.org> | 2025-06-15 21:38:13 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2025-06-15 21:38:13 +0000 |
| commit | f768dc01da9a681716724418ccf64ce55bd396c5 (patch) | |
| tree | 73e695adf5f62b6af59f5d96c30072e6f195ead3 /compiler/rustc_session/src/config.rs | |
| parent | 586ad391f5ee4519acc7cae340e34673bae762b1 (diff) | |
| parent | 2554f8f74d694fdd7fd98a76330b1030e37a1831 (diff) | |
| download | rust-f768dc01da9a681716724418ccf64ce55bd396c5.tar.gz rust-f768dc01da9a681716724418ccf64ce55bd396c5.zip | |
Auto merge of #142471 - lqd:sparse-borrows, r=nnethercote
use `MixedBitSet` for borrows-in-scope dataflow analysis The `Borrows` dataflow analysis uses a dense bitset, but a bitset supporting _some_ amount of sparseness is better suited for big functions with a big number of loans. The cutoff between dense and chunked bitset is around 2K loans IIRC, and we could finesse that value if we wanted to, but as-is it happens to a couple of rustc-perf benchmarks (which IIRC are at least partially generated from macros and the likes.). It's a small win on these two, and shouldn't have any impact on the others. r? `@matthewjasper`
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