Tuning -funfolding-use-threshhold

[Donald Bruce Stewart]

Does this thread on haskell-cafe, about getting better bit shifting
results, indicate we should be tweaking the default unfolding-use
threshold? Do the recent bit shifting/inlining patches improve things?

    http://thread.gmane.org/gmane.comp.lang.haskell.cafe/16849/focus=16849

I'm thinking that users shouldn't need to resort to manual
-funfolding-use-threshhold settings?

-- Don