[FFmpeg-devel] r9017 breaks WMA decoding on Intel Macs

Trent Piepho xyzzy
Wed May 30 20:03:16 CEST 2007

On Wed, 30 May 2007, Michael Niedermayer wrote:
> > > compiles with gcc 2.95. So there isn't any doubt in the patch itself.
> >
> > Ok, fine with me. Michael, do you think that the patch I posted
> > earlier (100% based on Trent's, only fixing minor issues) should be
> > applied?
> well these arent the only occurances of this syntax in ffmpeg
> also i would like to see benchmarks, gcc has the tendency to do stupid
> things if it can and here it can ... (=more freedom with gcc generally means
> worse code, thats just my experience with gcc, its not always true, also
> gcc should be getting better as the version numbers increase ...)
> also i dont see how this additional freedom could lead to better code
> here, it can just lead to worse code if gcc doesnt realize that things
> can be addressed via the same register

When I checked the asm output, it generates the exact same instructions,
just without the semi-incorrect asm syntax.

More information about the ffmpeg-devel mailing list