Re: [f-cpu] stats on insn pairing

[devik <devik@cdi.cz>]

For all. Technically I take every insn and account
all pairs of the insn with all others whose use its
output.

> So you're "pair" is for instruction that have a fanout of 1 ?
>
> nicO
>
> On Sun, 23 Feb 2003 13:00:37 +0100 (CET)
> devik <devik@cdi.cz> wrote:
>
> > Sorry I was in hurry. I did data flow analysis on gcc
> > internal repesetation after last scheduling and computed:
> > 1) avg fanout, how many insn uses result of single insn
> > 2) fanout histogram
> > 3) register value producer-consumer pairs
> > 4) same as 3 but distinguishing insns with and without
> >    immediate values
> >
> > Notes:
> > store-store link is because of post-increment dependency
> > const_int-plus is adding of const in 2 insns because of
> >         too big value
> > move-move is value copying (creating bigger fanout)
> >
> > hope it is more clear,
> > devik
> >
> > On Fri, 21 Feb 2003, Michael Riepe wrote:
> >
> > > On Fri, Feb 21, 2003 at 04:37:03PM +0100, devik wrote:
> > >
> > > > while discussing with nico I wanted to know read insn-insn
> > > > pairing and value fanout. I computed stats for gcc source
> > > > and linux kernel one.
> > > > They are attached ...
> > >
> > > Does `pair' mean that the second insn consumes a value produced by
> > > the first insn?  Or does it just follow immediately in the
> > > instruction stream?
> > >
> > > --
> > >  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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> > >
> >
> >
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