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| author |   Eric Biggers <ebiggers@google.com> | 2024-12-12 13:28:45 -0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2024-12-21 22:46:24 +0800 |
| commit | 3cd46a78eeee8f1be545492a9de6dc37cd7d69d9 (patch) | |
| tree | 9fb3f07132bb8b0745f3c44654e78f4aa21348c2 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | crypto: x86/aes-xts - more code size optimizations (diff) | |
| download | wireguard-linux-3cd46a78eeee8f1be545492a9de6dc37cd7d69d9.tar.xz wireguard-linux-3cd46a78eeee8f1be545492a9de6dc37cd7d69d9.zip | |
crypto: x86/aes-xts - additional optimizations
Reduce latency by taking advantage of the property vaesenclast(key, a) ^
b == vaesenclast(key ^ b, a), like I did in the AES-GCM code.
Also replace a vpand and vpxor with a vpternlogd.
On AMD Zen 5 this improves performance by about 3%. Intel performance
remains about the same, with a 0.1% improvement being seen on Icelake.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
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