Re: [f-cpu] loadconsx and stream hints

[Michael Riepe <michael@stud.uni-hannover.de>]

On Thu, Jan 09, 2003 at 11:47:02AM +0100, devik wrote:
> > >of latest loadconsx (and loadcons.n) so I can add
> > >them to gcc ?
> > >
> >
> > i prefer to stick with the old/original "loadcons[x]" which writes
> > a 16-bit constant to a given part of a register.
> 
> so that loadconsx.4 == loadcons.4

loadconsx.3 == loadcons.3 (there is no chunk 4), but only on a 64-bit
machine.  Yes that's kinda tricky.

> and loadconsx.0 sign extends the value to 64 bits ?

Or more.

> And loadconsx.1 leaves 16 LSB, sets bit16...31 and
> copies 31 do 31...63 ?

Yep.

> Btw will be partial writes solved whe you do
> loadconsx.0 $0xffff
> loadcons.1 $0
> 
> for example ?

They should, yes.

-- 
 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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