Commentary section update.

#

# aes-*-cbc benchmarks are improved by 50% [compared to gcc 3.3.2 on

# Opteron 240 CPU] plus all the bells-n-whistles from 32-bit version

# [you'll notice a lot of resemblance], such as compressed S-boxs

# and prefetch of these tables in CBC mode, as well as avoiding L1

# cache aliasing between stack frame and key schedule and already

# mentioned tables.

# [you'll notice a lot of resemblance], such as compressed S-boxes

# in little-endian byte order, prefetch of these tables in CBC mode,

# as well as avoiding L1 cache aliasing between stack frame and key

# schedule and already mentioned tables.

#

# ECB performance is 15.6 cycles per processed byte for 128-bit key.

# Performance in number of cycles per processed byte for 128-bit key:

#

#		ECB		CBC encrypt

# AMD64		15.6		14.6(*)

# EM64T		23.3(**)	21.4(*)

#

# (*)	CBC benchmarks are better than ECB thanks to custom ABI used

#	by the private block encryption function.

# (**)	This module exhibits virtually same ECB performance as 32-bit

#	counterpart on [current] Intel CPU.

$output=shift;

open STDOUT,"| $^X ../perlasm/x86_64-xlate.pl $output";