[MPlayer-dev-eng] Re: [PATCH] PowerPC ffmpeg fixes

Daniel Egger degger at fhm.edu
Tue May 13 00:40:16 CEST 2003

Am Mon, 2003-05-12 um 23.31 schrieb Michael Niedermayer:

> > There's no known defect in gcc 3.2.3 regarding AltiVec. Unfortunately
> hmm, i dunno, i know that there was a bug in some gcc version with altivec and 
> the libmpeg2 altivec IDCT, IIRC this got worked around in libmpeg2 but not in 
> ffmpeg as the one who ported the IDCT from libmpeg2 couldnt reproduce it,i 
> dunno if this is related though ...

2002-02-26  Daniel Egger  <degger at fhm.edu>          
        * config/rs6000/rs6000.md: Swap define_insn attributes to
        fix incorrect generation of merge high instructions instead
        of merge low.

This one maybe? :)

The only other problems I know of are syntactic ones when the hacker
was used to the AltiVec extension to gcc 2.95 by Motorola. Also the
semantic changed a bit in the initialisation of vectors which is
what I think could be the culprit.

Depending on which compiler people use for MacOSX this problem might
not show up there, the one of 10.2 is gcc-3.2ish while older ones
have the Motorola extension.

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