[Ffmpeg-devel] [BUG] Compilation failure when using --disable-opts

Måns Rullgård mans
Thu Mar 15 01:13:07 CET 2007

Michael Niedermayer <michaelni at gmx.at> writes:

> Hi
> On Wed, Mar 14, 2007 at 10:16:59PM +0000, M?ns Rullg?rd wrote:
>> Panagiotis Issaris <takis at issaris.org> writes:
> [...]
>> >> And are you certain that this is correct for x86_64?  Is the check
>> >> even needed there, what with all the extra registers?
>> > Actually, I do not really know... I figured that because x86_64 is
>> > backwards compatible
>> The instruction set is compatible, meaning that everything that works
>> on 32-bit x86 still works on a 64-bit chip.  Things that don't work on
>> 32-bit chips might still be possible.  8 extra registers come to
>> mind...
>> > the registers are still there and the tests should still work. In the
>> > worst case the tests would be unnecessary ofcourse... Prefer to remove
>> > it and only add it when someone figures out how this works on x86_64?
>> I don't think this is very urgent, so I'd rather wait a day for
>> someone with the knowledge to shed some light.
> the tests should be run on x86_64 too

Care to explain?  Does the same test even work at all on x86_64?

M?ns Rullg?rd
mans at mansr.com

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