[FFmpeg-devel] Question about loop counter
Tue May 15 11:25:12 CEST 2007
On Tue, May 15, 2007 at 11:00:59AM +0200, Michael Niedermayer wrote:
> On Tue, May 15, 2007 at 04:31:11PM +0800, Zuxy Meng wrote:
> > When unrolling loops or do a mmx->sse2 conversion, loop counters need
> > to be divided by half. E.g. func_c(int n) can accept any n, while
> > func_mmx(int n) assumes n is even, and func_sse2(int n) requires n to
> > be a multiple of 4. How to determine whether it's safe?
> ask here or RTFS
And please, please document such assumptions, even if they weren't
sometimes in the past!!!
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