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Re: [GCC 4.2 Project] Omega data dependence test
On Sun, 2005-08-14 at 13:14 +0200, Sebastian Pop wrote:
> Daniel Berlin wrote:
> >
> > Sebastian, I really think you are worrying too much.
>
> right.
>
> > It's pretty rare that it will take going all the way to omega to be able
> > to disambiguate two dependences.
> >
>
> for dependence tests we exercise only a limited part of omega, but now
> suppose that we'll use omega for other purposes, for example cache
> miss equations,
Most cache miss equations are using distance numbers, which we don't
always need to go all the way to omega to get.
> scheduling,
Dependence again :)
> regalloc,
Dependence again :)
> etc. One of these users will
> sooner or later end by triggering the exponential bullet.
Only if you use such a big hammer for every small nail :)