mirror of https://github.com/python/cpython
1aa00ff383
Rework the code choosing BLAKE2 code paths from using the optimized variant on all x86_64 machines to using it when SSSE3 or better supported instructions sets are available. Firstly, this solves the problem of using pure SSE2 code path on x86_64 machines. As reported in the bug, this code is slower than the reference code on all tested x86_64 machines. Furthermore, on Athlon64 that lacks SSSE3, it is even 2.5 times slower than the reference code! Checking for SSSE3 therefore ensures that the optimized implementation will only be used when it has a chance of performing better. Secondly, this makes it possible to use SSSE3+ optimizations on 32-bit x86 systems. This allows for even 2 times speed gain on modern 32-bit x86 systems (tested in a 32-bit chroot). |
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| .. | ||
| clinic | ||
| impl | ||
| blake2b2s.py | ||
| blake2b_impl.c | ||
| blake2module.c | ||
| blake2ns.h | ||
| blake2s_impl.c | ||