[FFmpeg-devel] [RFC] clobbers for XMM registers

Måns Rullgård mans
Tue Sep 28 02:25:36 CEST 2010

Michael Niedermayer <michaelni at gmx.at> writes:

> On Sat, May 29, 2010 at 08:27:58PM +0200, Reimar D?ffinger wrote:
>> Hello,
>> this is not suitable by far (among other things, ugly parts, split asm code
>> where a clobber is likely to introduce bugs, only tested to compile,
>> did not find a nice "dummy" clobber constraint - particularly important since
> try "%esp" ;)
>> I suspect older gccs won't accept %xmm clobbers, ...).
> the oldest i have here is 3.3 and it supports it

4.x on BSD and Windows don't.

M?ns Rullg?rd
mans at mansr.com

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