1 /*
2  * Copyright © 2018, VideoLAN and dav1d authors
3  * Copyright © 2018, Two Orioles, LLC
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright notice, this
10  *    list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright notice,
13  *    this list of conditions and the following disclaimer in the documentation
14  *    and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #ifndef DAV1D_SRC_X86_CPU_H
29 #define DAV1D_SRC_X86_CPU_H
30 
31 enum CpuFlags {
32     DAV1D_X86_CPU_FLAG_SSE2        = 1 << 0,
33     DAV1D_X86_CPU_FLAG_SSSE3       = 1 << 1,
34     DAV1D_X86_CPU_FLAG_SSE41       = 1 << 2,
35     DAV1D_X86_CPU_FLAG_AVX2        = 1 << 3,
36     DAV1D_X86_CPU_FLAG_AVX512ICL   = 1 << 4, /* F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/
37                                               * VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ */
38     DAV1D_X86_CPU_FLAG_SLOW_GATHER = 1 << 5, /* Flag CPUs where gather instructions are slow enough
39                                               * to cause performance regressions. */
40 };
41 
42 unsigned dav1d_get_cpu_flags_x86(void);
43 
44 #endif /* DAV1D_SRC_X86_CPU_H */
45