>>>>> "Geoffrey" == Geoffrey Keating <[EMAIL PROTECTED]> writes:
Geoffrey> Paul Koning <[EMAIL PROTECTED]> writes:
>> Still, never mind what the C spec appears to say, optimizing away
>> the cast cannot possibly what the user intended.
Geoffrey> The user might have written a routine which takes a
Geoffrey> 'volatile int *', with the intent that routine would be
Geoffrey> used on both regular and volatile 'int's. The compiler
Geoffrey> might be able to see (after inlining) that this particular
Geoffrey> instance does not actually refer to a volatile variable,
Geoffrey> and so be able to optimise the routine better.
Ok, so every once in a while you might run into a case like that, and
you could very slightly speed up that case at the expense of
introducing a hairy bug into all other cases. Not a good tradeoff at
all.
paul
