[FFmpeg-cvslog] r21799 - in trunk/libavcodec: Makefile alsdec.c bgmc.c bgmc.h

[Thilo Borgmann]

Am 15.02.10 11:47, schrieb Carl Eugen Hoyos:
> Mike Melanson <mike <at> multimedia.cx> writes:
> 
>> I have staged tests for these 6 16-bit files. Linux / x86_64 / icc 11.1 
>> produces different results for all files.
> 
> Needs -parallel when compiling alsdec.c for correct results.

This is interesting. Is this just an observation or do you have some
more detailed information what aspect of -parallel makes things functional?

> 
>> Possibly a compiler bug. I'll alert my Intel compiler contact.
> 
> Could you point him to Intel issue 556938 (vc1_mc_4mv_chroma() in vc1dec.c gets
> miscompiled with any optimisation)? I believe vc1 is still in more widespread
> use than als (and one should always use -parallel with icc anyway).

Why don't we use -parallel for icc in general then?


-Thilo