[RFA] Using the new atomicity builtins

[Paolo Carlini]

Hi Peter,

>> now that RTH kindly implemented the atomicity builtins + target bits
>> for most of the most widespread targets (I remember at least
>> x86(x86_64), ia64, powerpc, alpha), I think we can start migrating.
>
> Where can I read more about these builtins?

You can start from here:

    http://gcc.gnu.org/ml/gcc-patches/2005-04/msg00915.html

then many more patches during the month of April, all with "atomic" in
subject. Ah, I was wrong about powerpc: Geoff Keating did the powerpc bits.

Paolo.