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| author | nickols_k <nickols_k@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-06-13 16:12:14 +0000 |
|---|---|---|
| committer | nickols_k <nickols_k@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-06-13 16:12:14 +0000 |
| commit | 50f47cfd500e666eff9db8b5f6e6b0839539c021 (patch) | |
| tree | ff77d763b7bbd77dc02ed198f6ff615ae6ef3a43 /libvo | |
| parent | 6bef8b7c5c13e6607e5d8f732dea411cc062bed6 (diff) | |
| download | mpv-50f47cfd500e666eff9db8b5f6e6b0839539c021.tar.bz2 mpv-50f47cfd500e666eff9db8b5f6e6b0839539c021.tar.xz | |
Issues about P3 performance and SSE2 support.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1124 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libvo')
| -rw-r--r-- | libvo/aclib.c | 11 | ||||
| -rw-r--r-- | libvo/aclib_template.c | 11 |
2 files changed, 18 insertions, 4 deletions
diff --git a/libvo/aclib.c b/libvo/aclib.c index 85bab6e040..2366a28d51 100644 --- a/libvo/aclib.c +++ b/libvo/aclib.c @@ -8,8 +8,15 @@ #include <stddef.h> -/* Enable this code, if SSE version works (faster) for you! */ -#if 1 +#ifndef HAVE_SSE2 +/* + P3 processor has only one SSE decoder so can execute only 1 sse insn per + cpu clock, but it has 3 mmx decoders (include load/store unit) + and executes 3 mmx insns per cpu clock. + P4 processor has some chances, but after reading: + http://www.emulators.com/pentium4.htm + I have doubts. Anyway SSE2 version of this code can be written better. +*/ #undef HAVE_SSE #endif diff --git a/libvo/aclib_template.c b/libvo/aclib_template.c index 85bab6e040..2366a28d51 100644 --- a/libvo/aclib_template.c +++ b/libvo/aclib_template.c @@ -8,8 +8,15 @@ #include <stddef.h> -/* Enable this code, if SSE version works (faster) for you! */ -#if 1 +#ifndef HAVE_SSE2 +/* + P3 processor has only one SSE decoder so can execute only 1 sse insn per + cpu clock, but it has 3 mmx decoders (include load/store unit) + and executes 3 mmx insns per cpu clock. + P4 processor has some chances, but after reading: + http://www.emulators.com/pentium4.htm + I have doubts. Anyway SSE2 version of this code can be written better. +*/ #undef HAVE_SSE #endif |