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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-05-16 21:28:26 +0300 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2014-05-16 21:41:14 +0300 |
| commit | 323b1eb80ff3396d83fedbe5bba9a4e6c412d192 (patch) | |
| tree | 1d8aac7a5f8c04a93a8c115410b15b0f85af5169 /configure.ac | |
| parent | 98f021961ee65669037bc8bb552a69fd78f610fc (diff) | |
| download | libgcrypt-323b1eb80ff3396d83fedbe5bba9a4e6c412d192.tar.gz | |
chacha20: add SSE2/AMD64 optimized implementation
* cipher/Makefile.am: Add 'chacha20-sse2-amd64.S'.
* cipher/chacha20-sse2-amd64.S: New.
* cipher/chacha20.c (USE_SSE2): New.
[USE_SSE2] (_gcry_chacha20_amd64_sse2_blocks): New.
(chacha20_do_setkey) [USE_SSE2]: Use SSE2 implementation for blocks
function.
* configure.ac [host=x86-64]: Add 'chacha20-sse2-amd64.lo'.
--
Add Andrew Moon's public domain SSE2 implementation of ChaCha20. Original
source is available at: https://github.com/floodyberry/chacha-opt
Benchmark on Intel i5-4570 (haswell),
with "--disable-hwf intel-avx2 --disable-hwf intel-ssse3":
Old:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 1.97 ns/B 483.8 MiB/s 6.31 c/B
STREAM dec | 1.97 ns/B 483.6 MiB/s 6.31 c/B
New:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
STREAM enc | 0.931 ns/B 1024.7 MiB/s 2.98 c/B
STREAM dec | 0.930 ns/B 1025.0 MiB/s 2.98 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 47a322be..c5952c7d 100644 --- a/configure.ac +++ b/configure.ac @@ -1815,6 +1815,7 @@ if test "$found" = "1" ; then case "${host}" in x86_64-*-*) # Build with the assembly implementation + GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-sse2-amd64.lo" GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ssse3-amd64.lo" GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-avx2-amd64.lo" ;; |