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| author | nickols_k <nickols_k@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-06-08 10:56:04 +0000 |
|---|---|---|
| committer | nickols_k <nickols_k@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-06-08 10:56:04 +0000 |
| commit | 49afe84db7be02a175c490b1221dd215bbfddf35 (patch) | |
| tree | 340c2d21d03be6a131c12fb9399686f42b7ea71f | |
| parent | b16c4deb0b677ca57d37a70a193fafa0eba0876b (diff) | |
| download | mpv-49afe84db7be02a175c490b1221dd215bbfddf35.tar.bz2 mpv-49afe84db7be02a175c490b1221dd215bbfddf35.tar.xz | |
Last minute improvements before release. Added banchmark
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1055 b3059339-0415-0410-9bf9-f77b7e298cf2
| -rw-r--r-- | mp3lib/decode_k7.s | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/mp3lib/decode_k7.s b/mp3lib/decode_k7.s index edea66d567..93803d8625 100644 --- a/mp3lib/decode_k7.s +++ b/mp3lib/decode_k7.s @@ -7,15 +7,20 @@ /// - Added new opcode PFNACC /// - 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 +/// - 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) +/// (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@mail.ru> /// / synth_1to1_3dnow works the same way as the c version of |