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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-05-20 05:23:52 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-05-20 06:10:59 +0200 |
| commit | 6310eb8010b7a3b3016e297132380cbd4e3d2d10 (patch) | |
| tree | 3e142b1a05d3bcde2403d57727ee06f0f550edbf /libavutil/cpu.c | |
| parent | e50ae60d46181814245f70b61b70394311e10373 (diff) | |
avutil/cpu: force mmx on selection of higher x86 SIMD features
Fixes various runtime failures with manually set flags that represent no
existing CPU
Fixes Ticket3653
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/cpu.c')
| -rw-r--r-- | libavutil/cpu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavutil/cpu.c b/libavutil/cpu.c index c4517bab67..454326cf2c 100644 --- a/libavutil/cpu.c +++ b/libavutil/cpu.c @@ -47,6 +47,26 @@ static int flags, checked; void av_force_cpu_flags(int arg){ + if ( (arg & ( AV_CPU_FLAG_3DNOW | + AV_CPU_FLAG_3DNOWEXT | + AV_CPU_FLAG_SSE | + AV_CPU_FLAG_SSE2 | + AV_CPU_FLAG_SSE2SLOW | + AV_CPU_FLAG_SSE3 | + AV_CPU_FLAG_SSE3SLOW | + AV_CPU_FLAG_SSSE3 | + AV_CPU_FLAG_SSE4 | + AV_CPU_FLAG_SSE42 | + AV_CPU_FLAG_AVX | + AV_CPU_FLAG_XOP | + AV_CPU_FLAG_FMA3 | + AV_CPU_FLAG_FMA4 | + AV_CPU_FLAG_AVX2 )) + && !(arg & AV_CPU_FLAG_MMX)) { + av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n"); + arg |= AV_CPU_FLAG_MMX; + } + flags = arg; checked = arg != -1; } |