diff options
| author | Andy Polyakov <appro@openssl.org> | 2011-05-27 09:46:19 +0000 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2011-05-27 09:46:19 +0000 |
| commit | 0dff8ba2483520130cc8281b7dab604e9e6ca6da (patch) | |
| tree | 9e73bfdd4e0be0c76ceac6f27a8e89436ce3a43a /crypto/rc4 | |
| parent | eb62cd807b3d15168110621142dbcbd6227110bd (diff) | |
rc4-586.pl: optimize even further...
Diffstat (limited to 'crypto/rc4')
| -rw-r--r-- | crypto/rc4/asm/rc4-586.pl | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/crypto/rc4/asm/rc4-586.pl b/crypto/rc4/asm/rc4-586.pl index 0c4cac4e89..4b8bc78b33 100644 --- a/crypto/rc4/asm/rc4-586.pl +++ b/crypto/rc4/asm/rc4-586.pl @@ -37,10 +37,10 @@ # Pentium III 7.8(*) # Intel P4 7.5 # -# Opteron 6.4/+14% # new MMX numbers -# Core2 5.8/+50%(**) -# Westmere 5.5/+80%(**) -# Sandy Bridge 5.4/0% +# Opteron 6.1/+20% # new MMX numbers +# Core2 5.3/+67%(**) +# Westmere 5.1/+94%(**) +# Sandy Bridge 5.0/+8% # # (*) PIII can actually deliver 6.6 cycles per byte with MMX code, # but this specific code performs poorly on Core2. And vice @@ -126,8 +126,7 @@ if ($alt=0) { $RC4_loop_mmx = sub { my $i=shift; - &add ($yy,$tx); - &movz ($yy,&LB($yy)); # (*) + &add (&LB($yy),&LB($tx)); &psllq ("mm1",8*(($i-1)&7)) if (abs($i)!=1); &mov ($ty,&DWP(0,$dat,$yy,4)); &mov (&DWP(0,$dat,$yy,4),$tx); @@ -204,6 +203,9 @@ if ($alt=0) { &$RC4_loop_mmx(0); &set_label("loop_mmx_enter"); for ($i=1;$i<8;$i++) { &$RC4_loop_mmx($i); } + &mov ($ty,$yy); + &xor ($yy,$yy); # this is second key to Core2 + &mov (&LB($yy),&LB($ty)); # and Westmere performance... &cmp ($inp,&DWP(-4,$dat)); &lea ($inp,&DWP(8,$inp)); &jb (&label("loop_mmx")); |