Bootstrap times on mainline are getting worse

[Roger Sayle]

> I still think it's worth shrinking processor_costs - we're getting
> nickled and dimed to death on cache utilization, and this is a cheap
> way to get quite a bit of space back.

I agree it does no harm, and potentially some good.  Saving a few
hundred bytes is a step in the right direction, even if it'll have
little overall effect on GCC's multi-megabyte memory footprint.


> I'd wait until we really do have a cost above 256 and then change
> just that one entry to unsigned short.

Sounds very reasonable.


Roger
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