On Tue, Apr 10, 2012 at 5:43 PM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Date: Tue, 10 Apr 2012 17:34:14 -0700
>
>> Sparc has "faligndata", no?
>
> It's an FPU instruction :-)
Ok.
> The barrel shift would be the fastest on sparc.
.. and you don't have a double shift, right? So you'd need to do two
shifts and the or for each word.
At which point it is probably pointless to even bother on sparc32,
since you only get four bytes per loop. But on 64-bit it presumably
ends up being at least a slight win.
Linus
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