diff options
| author | Andy Polyakov <appro@openssl.org> | 2008-08-06 08:47:07 +0000 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2008-08-06 08:47:07 +0000 |
| commit | eb1aa135d8806750777f4ecd881935004e1052e3 (patch) | |
| tree | dd540b43ead0a2889665896116b71cfe4ba8a10a /crypto | |
| parent | 99649b599083c484a6eb57893976fabeb48952e8 (diff) | |
sha1-armv4-large.pl performance improvement. On PXA255 it gives +10% on
8KB block, +60% on 1KB, +160% on 256B...
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/sha/asm/sha1-armv4-large.pl | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/crypto/sha/asm/sha1-armv4-large.pl b/crypto/sha/asm/sha1-armv4-large.pl index d468be35da..102cf03725 100644 --- a/crypto/sha/asm/sha1-armv4-large.pl +++ b/crypto/sha/asm/sha1-armv4-large.pl @@ -18,8 +18,8 @@ # thumb 304 3212 4420 # armv4-small 392/+29% 1958/+64% 2250/+96% # armv4-compact 740/+89% 1552/+26% 1840/+22% -# armv4-large 1420/+92% 1307/+19% 1500/+23% -# full unroll ~5100/+260% ~1260/+4% ~1500/+0% +# armv4-large 1420/+92% 1307/+19% 1370/+34%[***] +# full unroll ~5100/+260% ~1260/+4% ~1300/+5% # ==================================================================== # thumb = same as 'small' but in Thumb instructions[**] and # with recurring code in two private functions; @@ -37,6 +37,7 @@ # modes are limited. As result it takes more instructions to do # the same job in Thumb, therefore the code is never twice as # small and always slower. +# [***] which is also ~35% better than compiler generated code. $output=shift; open STDOUT,">$output"; @@ -50,9 +51,10 @@ $c="r5"; $d="r6"; $e="r7"; $K="r8"; -$t0="r10"; -$t1="r11"; -$t2="r12"; +$t0="r9"; +$t1="r10"; +$t2="r11"; +$t3="r12"; $Xi="r14"; @V=($a,$b,$c,$d,$e); @@ -64,14 +66,14 @@ $code.=<<___; ldrb $t0,[$inp],#4 ldrb $t1,[$inp,#-3] ldrb $t2,[$inp,#-2] + ldrb $t3,[$inp,#-1] add $e,$K,$e,ror#2 @ E+=K_00_19 orr $t0,$t1,$t0,lsl#8 - ldrb $t1,[$inp,#-1] - orr $t0,$t2,$t0,lsl#8 add $e,$e,$a,ror#27 @ E+=ROR(A,27) - orr $t0,$t1,$t0,lsl#8 - add $e,$e,$t0 @ E+=X[i] + orr $t0,$t2,$t0,lsl#8 eor $t1,$c,$d @ F_xx_xx + orr $t0,$t3,$t0,lsl#8 + add $e,$e,$t0 @ E+=X[i] str $t0,[$Xi,#-4]! ___ } @@ -81,12 +83,12 @@ $code.=<<___; ldr $t0,[$Xi,#15*4] ldr $t1,[$Xi,#13*4] ldr $t2,[$Xi,#7*4] + ldr $t3,[$Xi,#2*4] add $e,$K,$e,ror#2 @ E+=K_xx_xx eor $t0,$t0,$t1 - ldr $t1,[$Xi,#2*4] - add $e,$e,$a,ror#27 @ E+=ROR(A,27) eor $t0,$t0,$t2 - eor $t0,$t0,$t1 + eor $t0,$t0,$t3 + add $e,$e,$a,ror#27 @ E+=ROR(A,27) ___ $code.=<<___ if (!defined($flag)); eor $t1,$c,$d @ F_xx_xx, but not in 40_59 |