Re: [f-cpu] GCC and jmpz vs. jmpl

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

On Thu, Jan 09, 2003 at 10:54:31AM +0100, devik wrote:
> > > for inc/dec/neg/cmp.....
> > > Who added next cycle ??
> >
> > The INC unit needs 2 cycles because it became too complex.
> > Life's a bitch, you know...
> 
> hehehe, what irony ! Incrementer unis has its name after
> inc/dec. But now inc/dec are superfluous because they do
> the same job as addi $1 with the same time - addi can be
> even faster for 8bit chunks.

Not my fault. Whoever designed the original INC unit underestimated the
cost of a SIMD-enabled `and' reduce tree.

-- 
 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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