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Re: gcc 4.1 implements compiler builtins for atomic ops
> Not generating the code in the compiler means that people who are mainly
> interested in the architectures with easy use of atomic operations look
> at the code and think we on earth they should pay such a high price for
> the operation if they can do it much cheaper when inlining the code. It
> is not me saying that this is what should happen. It is what will
> happen regardless of my opinion. The result is reduced portability of
> sources and, as I said before, the archs with the diverging APIs will
I think you have no idea of the cost of an lwarx/stwcx. pair compared to
a library call ...