[MPlayer-dev-eng] gcc 3

[Arpi]

Hi,

Just compiled gcc 3.0.3 and made a few tests:

/3a/MPlayer/benchmark/testsuite2/405divx_sm_v2[1].avi
VIDEO:  [DIV3]  356x240  24bpp  30.00 fps  343.0 kbps (41.9 byte/s)
GCC 2.95.3 : 4.266s 4.267s 4.260s 4.272s
GCC 3.0.3  : 4.160s 4.175s 4.162s 4.153s

/3a/MPlayer/benchmark/testsuite2/Coyote.Ugly.Sample-highbitrate-atmos.avi
VIDEO:  [DIV3]  640x480  24bpp  25.00 fps  1867.1 kbps (227.9 kbyte/s)
GCC 2.95.3 : 6.072s 6.039s 6.019s 6.004s
GCC 3.0.3  : 5.819s 5.812s 5.824s 5.828s

so, gcc 3.0.3 creates ~3% faster code (ffdivx codec).

Now, let's see the mplayer compiling time:

gcc 2.95.3 (compiled for i383, original from Slackware 8)
 real    1m1.432s
 user    0m57.250s
 sys     0m2.950s

gcc 3.0.3 (compiled with -O4 -mcpu=i686 -march=i686)
 real    1m15.666s
 user    1m11.050s
 sys     0m3.290s

so, the optimized gcc3 is still much (~25%) slower than good old gcc 2.95

btw, if we see that gcc3 used extra 14 seconds to optimize 3% on the code,
it's somehow cool, compared to Michael's performance :)
just joking...


A'rpi / Astral & ESP-team

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mailto:arpi at thot.banki.hu
http://esp-team.scene.hu