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| author | bors <bors@rust-lang.org> | 2023-03-23 09:23:07 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2023-03-23 09:23:07 +0000 |
| commit | be01b983c48b75f4a7602f1e4568cd75c0b280ee (patch) | |
| tree | b50da7f94688a988e2f159b84a71a634d1892526 /compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp | |
| parent | 1d1e72308e5bcdf5abe95c1d29dfe82524940061 (diff) | |
| parent | 966d5b0e348c9bd29eb1d9ddc2c2cf42555a25b7 (diff) | |
| download | rust-be01b983c48b75f4a7602f1e4568cd75c0b280ee.tar.gz rust-be01b983c48b75f4a7602f1e4568cd75c0b280ee.zip | |
Auto merge of #10533 - Nilstrieb:cache, r=dswij
Significantly optimize `significant_drop_tightening` The lint is very slow as it doesn't cache the deeply nested check for the attribute. If we cache it, we can reduce the time spent on checking `rustc_borrowck` from 28s to 9s, which is a nice improvement. In the profile, the time inside `has_sig_drop_attr` goes from 66% to 0.2%, which is a lot more reasonable. <details> <summary>Flame graphs</summary> Before (all the tall `clippy` towers are `has_sig_drop_attr`):  After:  </details> Fixes #10532 changelog: [`significant_drop_tightening`]: significantly optimized
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp')
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