[FFmpeg-devel] [PATCH 09/13] avcodec/svq1dec: clear MMX state after MB decode loop

[Carl Eugen Hoyos]

2016-10-23 19:02 GMT+02:00 Ronald S. Bultje <rsbultje at gmail.com>:

> - (A) ffmpeg is broken in practice when calling musl malloc/free
> functions after calling MMX SIMD functions on x86-32 (which
> crashes).
> - (B) ffmpeg is broken in theory because we don't clear FPU
> state (as required) at the end of MMX SIMD functions.

> - define whether we're trying to fix "A" or "B" from above, because
> it affects the design. I'm assuming you're trying to fix A.

The posted patches make the impression to me that Michael tries
to fix B.

Carl Eugen