bn/asm/armv8-mont.pl: boost performance.

# Original ECP_NISTZ256 submission targeting x86_64 is detailed in

# http://eprint.iacr.org/2013/816.

#

#			with/without -DECP_NISTZ256_ASM(*)

# Apple A7		+140-590%

# Cortex-A53		+135-720%

# Cortex-A57		+145-570%

# X-Gene		+120-700%

# Denver		+150-740%

#

# (*)	comparison is not really "fair", because it's compared to C

#	implementation, unlike other similar cases that is;

#			with/without -DECP_NISTZ256_ASM

# Apple A7		+120-360%

# Cortex-A53		+120-400%

# Cortex-A57		+120-350%

# X-Gene		+200-330%

# Denver		+140-400%

#

# Ranges denote minimum and maximum improvement coefficients depending

# on benchmark. Lower coefficients are for ECDSA sign, server-side

# operation. Keep in mind that +500% means 6x improvement.

# operation. Keep in mind that +400% means 5x improvement.

$flavour = shift;

while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}