Add new --param knobs for inliner

[Jan Hubicka]

> Jan Hubicka wrote:
> 
> > uinlined-* should be useful for architecutures with greater function
> > call overhead than modern x86 chips (which is good portion of them,
> > especially s390 as I learnt on Cauldron). It would be nice to benchmark
> > effect of those and tune default in config/* files. I think this is a
> > reasonable way to deal with architecutral differences without making
> > inliner hard to tune in long term.
> 
> Thanks for the heads-up!  This looks interesting, we'll have a look.

It may (and likely will) still be necessary to also increase
max-inline-insns-auto and perhaps -single but I think it is good to get
model realistic first. It will make inliner to prioritize better and
consider more inline candidates as important via the big speedup metric.

Honza
> 
> Bye,
> Ulrich
> 
> -- 
>   Dr. Ulrich Weigand
>   GNU/Linux compilers and toolchain
>   Ulrich.Weigand@de.ibm.com
>