[Q] svref vs. aref for fixnum arrays

        Hi !

I notice an important performance difference between these two fixnum array
implementations:

1/ simple-vector / svref
2/ simple-array / aref

Note that in my test cases, the arrays don't contain anything else than
fixnums, and the compiler is aware of that (no number comsing at all). Yet,
the simple-vector method is faster.

Is there an implementation difference between the two ? For instance, would
fixnums be shifted in the simple-array version by any chance ?


Thanks.

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Didier Verna, [email protected], http://www.lrde.epita.fr/~didier

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