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sha1-ppc.pl: shave off one cycle from BODY_20_39

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and improve performance by 10% on POWER[78].

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 5c3598307ebbf5a88d1c39fbb2629536e443a5dd)
This commit is contained in:
Andy Polyakov 2014-07-21 15:29:09 +02:00
parent 2be9425514
commit a2f34441ab
2 changed files with 11 additions and 11 deletions
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18
crypto/sha/asm/sha1-ppc.pl
View File

@ -125,31 +125,31 @@ my ($i,$a,$b,$c,$d,$e,$f)=@_;
my $j=$i+1; my $j=$i+1;
$code.=<<___ if ($i<79); $code.=<<___ if ($i<79);
add $f,$K,$e add $f,$K,$e
xor $t0,$b,$d
rotlwi $e,$a,5 rotlwi $e,$a,5
xor @X[$j%16],@X[$j%16],@X[($j+2)%16] xor @X[$j%16],@X[$j%16],@X[($j+2)%16]
add $f,$f,@X[$i%16] add $f,$f,@X[$i%16]
xor $t0,$b,$c xor $t0,$t0,$c
xor @X[$j%16],@X[$j%16],@X[($j+8)%16] xor @X[$j%16],@X[$j%16],@X[($j+8)%16]
add $f,$f,$e
rotlwi $b,$b,30
xor $t0,$t0,$d
xor @X[$j%16],@X[$j%16],@X[($j+13)%16]
add $f,$f,$t0 add $f,$f,$t0
rotlwi $b,$b,30
xor @X[$j%16],@X[$j%16],@X[($j+13)%16]
add $f,$f,$e
rotlwi @X[$j%16],@X[$j%16],1 rotlwi @X[$j%16],@X[$j%16],1
___ ___
$code.=<<___ if ($i==79); $code.=<<___ if ($i==79);
add $f,$K,$e add $f,$K,$e
xor $t0,$b,$d
rotlwi $e,$a,5 rotlwi $e,$a,5
lwz r16,0($ctx) lwz r16,0($ctx)
add $f,$f,@X[$i%16] add $f,$f,@X[$i%16]
xor $t0,$b,$c xor $t0,$t0,$c
lwz r17,4($ctx) lwz r17,4($ctx)
add $f,$f,$e add $f,$f,$t0
rotlwi $b,$b,30 rotlwi $b,$b,30
lwz r18,8($ctx) lwz r18,8($ctx)
xor $t0,$t0,$d
lwz r19,12($ctx) lwz r19,12($ctx)
add $f,$f,$t0 add $f,$f,$e
lwz r20,16($ctx) lwz r20,16($ctx)
___ ___
} }

4
crypto/sha/asm/sha512p8-ppc.pl
View File

@ -13,8 +13,8 @@
# always virtualized setup with possibly throttled processor. # always virtualized setup with possibly throttled processor.
# Relative comparison is therefore more informative. This module is # Relative comparison is therefore more informative. This module is
# ~60% faster than integer-only sha512-ppc.pl. To anchor to something # ~60% faster than integer-only sha512-ppc.pl. To anchor to something
# else, SHA256 is 16% slower than sha1-ppc.pl and 2.5x slower than # else, SHA256 is 24% slower than sha1-ppc.pl and 2.5x slower than
# hardware-assisted aes-128-cbc encrypt. SHA512 is 33% faster than # hardware-assisted aes-128-cbc encrypt. SHA512 is 20% faster than
# sha1-ppc.pl and 1.6x slower than aes-128-cbc. Another interesting # sha1-ppc.pl and 1.6x slower than aes-128-cbc. Another interesting
# result is degree of computational resources' utilization. POWER8 is # result is degree of computational resources' utilization. POWER8 is
# "massively multi-threaded chip" and difference between single- and # "massively multi-threaded chip" and difference between single- and