Re: [f-cpu] stats on insn pairing

[nico <nicolas.boulay@ifrance.com>]

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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