x86: check for AV_CPU_FLAG_AVXSLOW where useful
[libav.git] / libavutil / x86 / lls_init.c
1 /*
2 * linear least squares model
3 *
4 * Copyright (c) 2013 Loren Merritt
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/lls.h"
24 #include "libavutil/x86/cpu.h"
25
26 void ff_update_lls_sse2(LLSModel *m, double *var);
27 void ff_update_lls_avx(LLSModel *m, double *var);
28 double ff_evaluate_lls_sse2(LLSModel *m, double *var, int order);
29
30 av_cold void ff_init_lls_x86(LLSModel *m)
31 {
32 int cpu_flags = av_get_cpu_flags();
33 if (EXTERNAL_SSE2(cpu_flags)) {
34 m->update_lls = ff_update_lls_sse2;
35 if (m->indep_count >= 4)
36 m->evaluate_lls = ff_evaluate_lls_sse2;
37 }
38 if (EXTERNAL_AVX_FAST(cpu_flags)) {
39 m->update_lls = ff_update_lls_avx;
40 }
41 }