Reuben Scratton <reuben.scratton@...> writes:
> If I compile with -mfpu=neon then FFmpeg blows up
> with SIGILL (ILLOPTPC) when run on a non-Neon CPU.
> If I compile with -mfpu=vfvp3 then FFmpeg runs fine,
> but presumably without the optimized code
Did you test this? (with a debugger)
I don't know but it seems very unlikely to me that a
compiler option ("-mfpu=vfvp3") affects FFmpeg asm
optimizations.
[...]
> Would it be possible for FFmpeg to detect Neon at runtime?
Looking at ff_dsputil_init_arm() in
libavcodec/arm/dsputil_init_arm.c, that is exactly what it
currently does.
Carl Eugen
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