Robert Dewar <[EMAIL PROTECTED]> writes:
>
> a) the standard allows the optimization (or rather does not forbid it)

Assuming it is an optimization. See 
http://gcc.gnu.org/ml/gcc/2007-10/msg00607.html
for a counter example. In general cache misses are so costly that anything
that risks introducing more is in general a bad idea.

-Andi

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