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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-05-11 12:00:19 +0300 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-05-11 12:08:46 +0300 |
| commit | a39ee7555691d18cae97560f130aaf952bfbd278 (patch) | |
| tree | 593cc30752310037c063f5af76fecc42adc94901 /configure.ac | |
| parent | def7d4cad386271c6d4e2f10aabe0cb4abd871e4 (diff) | |
| download | libgcrypt-a39ee7555691d18cae97560f130aaf952bfbd278.tar.gz | |
chacha20: add AVX2/AMD64 assembly implementation
* cipher/Makefile.am: Add 'chacha20-avx2-amd64.S'.
* cipher/chacha20-avx2-amd64.S: New.
* cipher/chacha20.c (USE_AVX2): New macro.
[USE_AVX2] (_gcry_chacha20_amd64_avx2_blocks): New.
(chacha20_do_setkey): Select AVX2 implementation if there is HW
support.
(selftest): Increase size of buf by 256.
* configure.ac [host=x86-64]: Add 'chacha20-avx2-amd64.lo'.
--
Add AVX2 optimized implementation for ChaCha20. Based on implementation by
Andrew Moon.
SSSE3 (Intel Haswell):
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 0.742 ns/B 1284.8 MiB/s 2.38 c/B
STREAM dec | 0.741 ns/B 1286.5 MiB/s 2.37 c/B
AVX2:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 0.393 ns/B 2428.0 MiB/s 1.26 c/B
STREAM dec | 0.392 ns/B 2433.6 MiB/s 1.25 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 0342067f..3a0fd524 100644 --- a/configure.ac +++ b/configure.ac @@ -1816,6 +1816,7 @@ if test "$found" = "1" ; then x86_64-*-*) # Build with the assembly implementation GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ssse3-amd64.lo" + GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-avx2-amd64.lo" ;; esac fi |