diff options
| author | David Benjamin <davidben@chromium.org> | 2015-04-21 00:40:54 +0300 |
|---|---|---|
| committer | Adam Langley <agl@google.com> | 2015-04-29 00:28:06 +0300 |
| commit | 74f79b601d33bd9b60fcacbbf9669c2d899d9bd8 (patch) | |
| tree | 064f11a96c150a993aaf6c04be4acb17c5dd68d7 /crypto/sha | |
| parent | 15a08fcca2378b97b761371c92b1408d639b46c8 (diff) | |
aes/asm/aesv8-armx.pl: optimize for Cortex-A5x.
ARM has optimized Cortex-A5x pipeline to favour pairs of complementary
AES instructions. While modified code improves performance of post-r0p0
Cortex-A53 performance by >40% (for CBC decrypt and CTR), it hurts
original r0p0. We favour later revisions, because one can't prevent
future from coming. Improvement on post-r0p0 Cortex-A57 exceeds 50%,
while new code is not slower on r0p0, or Apple A7 for that matter.
[Update even SHA results for latest Cortex-A53.]
(Imported from upstream's 94376cccb4ed5b376220bffe0739140ea9dad8c8)
Change-Id: I581c65b566116b1f4211fb1bd5a1a54479889d70
Reviewed-on: https://boringssl-review.googlesource.com/4481
Reviewed-by: Adam Langley <agl@google.com>
Diffstat (limited to 'crypto/sha')
| -rw-r--r-- | crypto/sha/asm/sha1-armv8.pl | 2 | ||||
| -rw-r--r-- | crypto/sha/asm/sha512-armv8.pl | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/crypto/sha/asm/sha1-armv8.pl b/crypto/sha/asm/sha1-armv8.pl index 6be86243..bdf48b8e 100644 --- a/crypto/sha/asm/sha1-armv8.pl +++ b/crypto/sha/asm/sha1-armv8.pl @@ -14,7 +14,7 @@ # # hardware-assisted software(*) # Apple A7 2.31 4.13 (+14%) -# Cortex-A53 2.19 8.73 (+108%) +# Cortex-A53 2.24 8.03 (+97%) # Cortex-A57 2.35 7.88 (+74%) # # (*) Software results are presented mostly for reference purposes. diff --git a/crypto/sha/asm/sha512-armv8.pl b/crypto/sha/asm/sha512-armv8.pl index e9f39f37..b7333273 100644 --- a/crypto/sha/asm/sha512-armv8.pl +++ b/crypto/sha/asm/sha512-armv8.pl @@ -14,7 +14,7 @@ # # SHA256-hw SHA256(*) SHA512 # Apple A7 1.97 10.5 (+33%) 6.73 (-1%(**)) -# Cortex-A53 2.38 15.6 (+110%) 10.1 (+190%(***)) +# Cortex-A53 2.38 15.5 (+115%) 10.0 (+150%(***)) # Cortex-A57 2.31 11.6 (+86%) 7.51 (+260%(***)) # # (*) Software SHA256 results are of lesser relevance, presented @@ -25,7 +25,7 @@ # (***) Super-impressive coefficients over gcc-generated code are # indication of some compiler "pathology", most notably code # generated with -mgeneral-regs-only is significanty faster -# and lags behind assembly only by 50-90%. +# and the gap is only 40-90%. $flavour=shift; # Unlike most perlasm files, sha512-armv8.pl takes an additional argument to |