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| author | Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> | 2022-07-21 10:05:06 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-07-22 11:58:27 -0300 |
| commit | 3b56f944c5398114486d6abd60c465682b802072 (patch) | |
| tree | e7c0b81f5be27aee611de6dad9fba15325dccb1f /LICENSES | |
| parent | b7060acfe8e80fe832e3227020d1127f2d971d1c (diff) | |
| download | glibc-3b56f944c5398114486d6abd60c465682b802072.zip glibc-3b56f944c5398114486d6abd60c465682b802072.tar.gz glibc-3b56f944c5398114486d6abd60c465682b802072.tar.bz2 | |
s390x: Add optimized chacha20
It adds vectorized ChaCha20 implementation based on libgcrypt
cipher/chacha20-s390x.S. The final state register clearing is
omitted.
On a z15 it shows the following improvements (using formatted
bench-arc4random data):
GENERIC MB/s
-----------------------------------------------
arc4random [single-thread] 198.92
arc4random_buf(16) [single-thread] 244.49
arc4random_buf(32) [single-thread] 282.73
arc4random_buf(48) [single-thread] 286.64
arc4random_buf(64) [single-thread] 320.06
arc4random_buf(80) [single-thread] 297.43
arc4random_buf(96) [single-thread] 310.96
arc4random_buf(112) [single-thread] 308.10
arc4random_buf(128) [single-thread] 309.90
-----------------------------------------------
VX. MB/s
-----------------------------------------------
arc4random [single-thread] 430.26
arc4random_buf(16) [single-thread] 735.14
arc4random_buf(32) [single-thread] 1029.99
arc4random_buf(48) [single-thread] 1206.76
arc4random_buf(64) [single-thread] 1311.92
arc4random_buf(80) [single-thread] 1378.74
arc4random_buf(96) [single-thread] 1445.06
arc4random_buf(112) [single-thread] 1484.32
arc4random_buf(128) [single-thread] 1517.30
-----------------------------------------------
Checked on s390x-linux-gnu.
Diffstat (limited to 'LICENSES')
| -rw-r--r-- | LICENSES | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -392,7 +392,8 @@ Copyright 2001 by Stephen L. Moshier <moshier@na-net.ornl.gov> sysdeps/aarch64/chacha20-aarch64.S, sysdeps/x86_64/chacha20-amd64-sse2.S, sysdeps/x86_64/chacha20-amd64-avx2.S, and -sysdeps/powerpc/powerpc64/power8/chacha20-ppc.c imports code from libgcrypt, +sysdeps/powerpc/powerpc64/power8/chacha20-ppc.c, and +sysdeps/s390/s390-64/chacha20-s390x.S imports code from libgcrypt, with the following notices: Copyright (C) 2017-2019 Jussi Kivilinna <jussi.kivilinna@iki.fi> |