Re: Parallelizing (WAS: Death by pointers.)

> Martin.Jourdan@inria.fr (Martin Jourdan) writes:


      A side benefit is that the C code produced by such compilers is generally
      free from hard-to-analyze features (e.g. aliases) that hinders low-level
      optimizations,


I wouldn't call this a benefit -- rather the opposite. It is true that
C code generated from high-level programs doesn't have some undesirable
properties, but the C compiler doesn't know that. Only expensive analysis,
which often is too pessimistic and conservative to even discover the truth
(because it also has to deal with `real' C programs), prevents many useful
optimizations from taking place.


      so that, altogether, the executable you obtain from a
      Scheme or ML source is quite competitive with the one you get from
      hand-written C code (and of course much easier to write).


What is `quite competetive'? Only twice as slow? Five times? Ten times?


--
-Matthias
--

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