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p256-x86_64.pl: update commentary with before-after performance data.

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(Imported from upstream's f0e6871df2e4641d0532e8f99d26c7a6454d03df.)

Change-Id: I2b799ff2a133839b0fe9d9093799d3a86045d709
Reviewed-on: https://boringssl-review.googlesource.com/25584
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
David Benjamin 2018-02-01 15:46:43 -05:00 committed by Adam Langley
parent d25e62e772
commit 8ae929f1e9
1 changed files with 16 additions and 12 deletions
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28
crypto/fipsmodule/ec/asm/p256-x86_64-asm.pl
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@ -25,20 +25,24 @@
# Further optimization by <appro@openssl.org>:
#
# this/original
# Opteron +12-49%
# Bulldozer +14-45%
# P4 +18-46%
# Westmere +12-34%
# Sandy Bridge +9-35%
# Ivy Bridge +9-35%
# Haswell +8-37%
# Broadwell +18-58%
# Atom +15-50%
# VIA Nano +43-160%
# this/original with/without -DECP_NISTZ256_ASM(*)
# Opteron +12-49% +110-150%
# Bulldozer +14-45% +175-210%
# P4 +18-46% n/a :-(
# Westmere +12-34% +80-87%
# Sandy Bridge +9-35% +110-120%
# Ivy Bridge +9-35% +110-125%
# Haswell +8-37% +140-160%
# Broadwell +18-58% +145-210%
# Atom +15-50% +130-180%
# VIA Nano +43-160% +300-480%
#
# (*) "without -DECP_NISTZ256_ASM" refers to build with
# "enable-ec_nistp_64_gcc_128";
#
# Ranges denote minimum and maximum improvement coefficients depending
# on benchmark.
# on benchmark. Lower coefficients are for ECDSA sign, relatively fastest
# server-side operation. Keep in mind that +100% means 2x improvement.
$flavour = shift;
$output = shift;