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| author | Nicholas Nethercote <nnethercote@mozilla.com> | 2018-12-12 09:01:39 +1100 |
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| committer | Nicholas Nethercote <nnethercote@mozilla.com> | 2018-12-12 20:36:00 +1100 |
| commit | 67f8fb5960551fbe80cc49ace1103a9fe393f9f4 (patch) | |
| tree | 5e0c1adf5a0f6aaa75554ceb862e16682eb1dc51 /src/libstd/sys | |
| parent | 08857c1c5743133ac309820640ef0755c82fedb7 (diff) | |
| download | rust-67f8fb5960551fbe80cc49ace1103a9fe393f9f4.tar.gz rust-67f8fb5960551fbe80cc49ace1103a9fe393f9f4.zip | |
Use `Lrc<Vec<TokenStream>>` instead of `RcVec<TokenStream>`.
This shrinks: - ThinTokenStream: 16 to 8 bytes - TokenTree: 32 to 24 bytes - TokenStream: 40 to 32 bytes The only downside is that in a couple of places this requires using `to_vec()` (which allocates) instead of `sub_slice()`. But those places are rarely executed, so it doesn't hurt perf. Overall, this reduces instruction counts on numerous benchmarks by up to 3%.
Diffstat (limited to 'src/libstd/sys')
0 files changed, 0 insertions, 0 deletions