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64d92d7498
"Optimize" is in quotes because it's rather a "salvage operation" for now. Idea is to identify processor capability flags that drive Knights Landing to suboptimial code paths and mask them. Two flags were identified, XSAVE and ADCX/ADOX. Former affects choice of AES-NI code path specific for Silvermont (Knights Landing is of Silvermont "ancestry"). And 64-bit ADCX/ADOX instructions are effectively mishandled at decode time. In both cases we are looking at ~2x improvement. AVX-512 results cover even Skylake-X :-) Hardware used for benchmarking courtesy of Atos, experiments run by Romain Dolbeau <romain.dolbeau@atos.net>. Kudos! Reviewed-by: Rich Salz <rsalz@openssl.org> |
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| .. | ||
| asm | ||
| aes_cbc.c | ||
| aes_cfb.c | ||
| aes_core.c | ||
| aes_ecb.c | ||
| aes_ige.c | ||
| aes_locl.h | ||
| aes_misc.c | ||
| aes_ofb.c | ||
| aes_wrap.c | ||
| aes_x86core.c | ||
| build.info | ||