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| author | Nicholas Nethercote <nnethercote@mozilla.com> | 2020-02-07 11:53:07 +1100 |
|---|---|---|
| committer | Nicholas Nethercote <nnethercote@mozilla.com> | 2020-02-21 10:11:35 +1100 |
| commit | 100ff5a25666a1903113ecff0dc63ad84e5bdff7 (patch) | |
| tree | 74c89ca9eef234c4270bcace1c06b18c2134d8d8 /src/test/rustdoc-ui/coverage/json.rs | |
| parent | 5e7af4669f80e5f682141f050193ab679afdb4b1 (diff) | |
| download | rust-100ff5a25666a1903113ecff0dc63ad84e5bdff7.tar.gz rust-100ff5a25666a1903113ecff0dc63ad84e5bdff7.zip | |
Revert `u8to64_le` changes from #68914.
`SipHasher128`'s `u8to64_le` function was simplified in #68914. Unfortunately, the new version is slower, because it introduces `memcpy` calls with non-statically-known lengths. This commit reverts the change, and adds an explanatory comment (which is also added to `libcore/hash/sip.rs`). This barely affects `SipHasher128`'s speed because it doesn't use `u8to64_le` much, but it does result in `SipHasher128` once again being consistent with `libcore/hash/sip.rs`.
Diffstat (limited to 'src/test/rustdoc-ui/coverage/json.rs')
0 files changed, 0 insertions, 0 deletions