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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-03-26 19:48:08 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-04-06 22:07:25 +0300 |
| commit | 9a63cfd61753b2c7ef7a872a01565154f10a72c0 (patch) | |
| tree | 0d628dc72e54f2a1fa51022688ea7065df2e0106 /configure.ac | |
| parent | cd3ed4977076343bb6092001cafe55673dc30e34 (diff) | |
| download | libgcrypt-9a63cfd61753b2c7ef7a872a01565154f10a72c0.tar.gz | |
chacha20: add AVX512 implementation
* cipher/Makefile.am: Add 'chacha20-amd64-avx512.S'.
* cipher/chacha20-amd64-avx512.S: New.
* cipher/chacha20.c (USE_AVX512): New.
(CHACHA20_context_s): Add 'use_avx512'.
[USE_AVX512] (_gcry_chacha20_amd64_avx512_blocks16): New.
(chacha20_do_setkey) [USE_AVX512]: Setup 'use_avx512' based on
HW features.
(do_chacha20_encrypt_stream_tail) [USE_AVX512]: Use AVX512
implementation if supported.
(_gcry_chacha20_poly1305_encrypt) [USE_AVX512]: Disable stitched
chacha20-poly1305 implementations if AVX512 implementation is used.
(_gcry_chacha20_poly1305_decrypt) [USE_AVX512]: Disable stitched
chacha20-poly1305 implementations if AVX512 implementation is used.
--
Benchmark on Intel Core i3-1115G4 (tigerlake):
Before:
| nanosecs/byte mebibytes/sec cycles/byte auto Mhz
STREAM enc | 0.276 ns/B 3451 MiB/s 1.13 c/B 4090
STREAM dec | 0.284 ns/B 3359 MiB/s 1.16 c/B 4090
POLY1305 enc | 0.411 ns/B 2320 MiB/s 1.68 c/B 4098±3
POLY1305 dec | 0.408 ns/B 2338 MiB/s 1.67 c/B 4091±1
POLY1305 auth | 0.060 ns/B 15785 MiB/s 0.247 c/B 4090±1
After (stream 1.7x faster, poly1305-aead 1.8x faster):
| nanosecs/byte mebibytes/sec cycles/byte auto Mhz
STREAM enc | 0.162 ns/B 5869 MiB/s 0.665 c/B 4092±1
STREAM dec | 0.162 ns/B 5884 MiB/s 0.664 c/B 4096±3
POLY1305 enc | 0.221 ns/B 4306 MiB/s 0.907 c/B 4097±3
POLY1305 dec | 0.220 ns/B 4342 MiB/s 0.900 c/B 4096±3
POLY1305 auth | 0.060 ns/B 15797 MiB/s 0.247 c/B 4085±2
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 eb149a51..9f0c10f9 100644 --- a/configure.ac +++ b/configure.ac @@ -2759,6 +2759,7 @@ if test "$found" = "1" ; then # Build with the assembly implementation GCRYPT_ASM_CIPHERS="$GCRYPT_ASM_CIPHERS chacha20-amd64-ssse3.lo" GCRYPT_ASM_CIPHERS="$GCRYPT_ASM_CIPHERS chacha20-amd64-avx2.lo" + GCRYPT_ASM_CIPHERS="$GCRYPT_ASM_CIPHERS chacha20-amd64-avx512.lo" ;; aarch64-*-*) # Build with the assembly implementation |