1 /*****************************************************************************
2 * intel_dispatcher.h: intel compiler cpu dispatcher override
3 *****************************************************************************
4 * Copyright (C) 2014-2015 x264 project
6 * Authors: Anton Mitrofanov <BugMaster@narod.ru>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program 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
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
22 * This program is also available under a commercial proprietary license.
23 * For more information, contact us at licensing@x264.com.
24 *****************************************************************************/
26 #ifndef X264_INTEL_DISPATCHER_H
27 #define X264_INTEL_DISPATCHER_H
29 /* Feature flags using _FEATURE_* defines from immintrin.h */
30 extern unsigned long long __intel_cpu_feature_indicator;
31 extern unsigned long long __intel_cpu_feature_indicator_x;
33 /* CPU vendor independent version of dispatcher */
34 void __intel_cpu_features_init_x( void );
36 static void x264_intel_dispatcher_override( void )
38 if( __intel_cpu_feature_indicator & ~1ULL )
40 __intel_cpu_feature_indicator = 0;
41 __intel_cpu_feature_indicator_x = 0;
42 __intel_cpu_features_init_x();
43 __intel_cpu_feature_indicator = __intel_cpu_feature_indicator_x;