From 652c59b967d7bbcc3322ba4f5c8c0bfe02794a25 Mon Sep 17 00:00:00 2001 From: Loren Merritt Date: Sat, 19 Aug 2006 02:42:20 +0000 Subject: [PATCH] use ff_fft_calc_3dn2 instead of sse on a K8. 1.5% faster vorbis. Originally committed as revision 6024 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/fft.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/libavcodec/fft.c b/libavcodec/fft.c index bc51472..7716dd2 100644 --- a/libavcodec/fft.c +++ b/libavcodec/fft.c @@ -68,17 +68,13 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse) if (has_vectors & MM_3DNOWEXT) s->imdct_calc = ff_imdct_calc_3dn2; if (has_vectors & MM_3DNOWEXT) - /* 3DNowEx for Athlon(XP) */ + /* 3DNowEx for K7/K8 */ s->fft_calc = ff_fft_calc_3dn2; else if (has_vectors & MM_3DNOW) /* 3DNow! for K6-2/3 */ s->fft_calc = ff_fft_calc_3dn; - if (has_vectors & MM_SSE2) - /* SSE for P4/K8 */ - s->fft_calc = ff_fft_calc_sse; - else if ((has_vectors & MM_SSE) && - s->fft_calc == ff_fft_calc_c) - /* SSE for P3 */ + else if (has_vectors & MM_SSE) + /* SSE for P3/P4 */ s->fft_calc = ff_fft_calc_sse; #else /* HAVE_MMX */ if (has_vectors & MM_ALTIVEC) -- 2.7.4