Hmmm. With -O2 on GHC 6.2, I get 0.177s, 0.217s, and 0.348s for your
three Haskell examples and 0.187s (with gcc -O2) for your C example.
The output of -ddump-simpl for the looks perfect for the second
Haskell example. My GHC seems to be doing a bang-up job here. What's
wrong with yours? (For the third example GHC's code could be improved
by additional inlining or hoisting of a constant array outside of the
loop.)
mike
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