Re: Image scaling performance

[Leif Lindholm]

On Tue, Feb 24, 2015 at 12:39:31PM +0000, Vladimir 'phcoder' Serbinenko wrote:
> > thx I'll try that but wouldn't it make more sense to implement a hw
> > version of this function?(do I need a different compiler?)
> >
> AFAIK there isn't a consistent division instruction across all ARMs and
> which is enabled on boot time.
> You can implement hw version of division but it will crash on some machines.
> Division is a slow operation on any platform and should be avoided as far
> as possible.

For 32-bit ARM, only the later processors (Cortex-A7, -A12, -A15,
-A17) have SDIV/UDIV.

/
    Leif