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slight improvements. k7 vs 3dnow already win 12 prcnts

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@780 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nickols_k 2001-05-12 07:12:38 +00:00
parent 15e8f762f8
commit 4a78e26571
1 changed files with 6 additions and 6 deletions
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12
mp3lib/decode_k7.s
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@ -4,7 +4,8 @@
/// This code based 'decode_3dnow.s' by Syuuhei Kashiyama
/// <squash@mb.kcom.ne.jp>,only some types of changes have been made:
///
/// - decreased number of opcodes (as it suggested by k7 manual)
/// - Added new opcode PFNACC
/// - decreased number of opcodes (as it was suggested by k7 manual)
/// (using memory reference as operand of instructions)
/// - change function name for support 3DNowEx! automatic detect
///
@ -45,6 +46,7 @@
bo:
.long 1
.text
/* int synth_1to1(real *bandPtr,int channel,unsigned char *out) */
.globl synth_1to1_3dnowex
synth_1to1_3dnowex:
subl $12,%esp
@ -97,7 +99,7 @@ synth_1to1_3dnowex:
movl 16(%esp),%edx
leal 0(,%edx,4),%edx
movl $decwin+64,%eax
movl %eax,%ecx
movl %eax,%ecx
subl %edx,%ecx
movl $16,%ebp
@ -134,9 +136,7 @@ synth_1to1_3dnowex:
pfmul 56(%ebx),%mm0
pfadd %mm0,%mm4
movq %mm4,%mm0
psrlq $32,%mm0
pfsub %mm0,%mm4
pfnacc %mm4, %mm4
pf2id %mm4,%mm4
movd %mm4,%eax
@ -196,7 +196,7 @@ synth_1to1_3dnowex:
movl $15,%ebp
.L68:
psubd %mm0,%mm0
pxor %mm0, %mm0
movq (%ecx),%mm2
pfmul (%ebx),%mm2