> I tried your example in GHC 6.10 and isum appears to work fine. > The type of 10000000 gets defaulted to Integer, a specialized version > of isum for Integer is then created, the strictness analyzer > determines that isum is strict in s, and the code generator produces a > loop. (If you want to look at the assembly code, it's easier if you > make the type Int.) Thanks for checking it. I'll be curious to see any improvements the new version brings, but this sounds promising already.
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