[Mplayer-cvslog] CVS: main/mp3lib decode_k7.s,1.6,1.7

[Nick Kurshev]

Update of /cvsroot/mplayer/main/mp3lib
In directory usw-pr-cvs1:/tmp/cvs-serv18096/main/mp3lib

Modified Files:
	decode_k7.s 
Log Message:
Last minute improvements before release. Added banchmark

Index: decode_k7.s
===================================================================
RCS file: /cvsroot/mplayer/main/mp3lib/decode_k7.s,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -r1.6 -r1.7
*** decode_k7.s	2001/06/08 09:41:22	1.6
--- decode_k7.s	2001/06/08 10:56:04	1.7
***************
*** 8,19 ****
  ///  - decreased number of opcodes (as it was suggested by k7 manual)
  ///    (using memory reference as operand of instructions)
! ///  - added PREFETCHW opcode. It has different semantic than k6-2
  ///    and saves 15-25 cpu clocks for athlon.
  ///  - partial unrolling loops for removing slower MOVW insns.
! ///    (Note probably same operation should be done for decode_3dnow)
  ///  - change function name for support 3DNowEx! automatic detect
  ///
  /// note: because K7 processors are an aggresive out-of-order three-way
  ///       superscalar ones instruction order is not significand for them.
  ///
  /// Modified by Nick Kurshev <nickols_k at mail.ru>
--- 8,24 ----
  ///  - decreased number of opcodes (as it was suggested by k7 manual)
  ///    (using memory reference as operand of instructions)
! ///  - added PREFETCHW opcode. It has different semantic on k7 than on k6-2
  ///    and saves 15-25 cpu clocks for athlon.
  ///  - partial unrolling loops for removing slower MOVW insns.
! ///    (Note: probably same operation should be done for decode_3dnow.s)
  ///  - change function name for support 3DNowEx! automatic detect
  ///
  /// note: because K7 processors are an aggresive out-of-order three-way
  ///       superscalar ones instruction order is not significand for them.
+ ///
+ /// Benchmark: measured by mplayer on Duron-700:
+ ///      3dNow! optimized code - 1.5% of cpu usage
+ ///      k7 optimized code     - 1.1% of cpu usage
+ /// Note: K6-2 users have an chance with partial loops unrolling
  ///
  /// Modified by Nick Kurshev <nickols_k at mail.ru>


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