[PATCH] fold-const.c use of BRANCH_COST

[Jan Hubicka]

> >>>>> Richard Henderson writes:
> 
> Richard> Nothing, except that it'd be better to go at them in a more
> Richard> organized sort of way than a basketful of random defines.
> 
> 	We can add the knobs for both uses of BRANCH_COST in fold-const.c
> in this pass, if you want.  BRANCH_COST isn't actually used in that many
> parts of GCC.

I would like to see this happen.  Definitly i386 CPUs are other where
BRANCH_COST choice doesn't match.  It would be nice to have separate
knobs for when optimizing for size or speed (decided using
maybe_hot_bb_p inside ifcvt.c)

Honza
> 
> David