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Re: Call for compiler help/advice: atomic builtins for v3

Richard Henderson wrote:
On Sun, Nov 06, 2005 at 12:10:03PM -0800, Ian Lance Taylor wrote:
How many processors out there support multi-processor systems but do
not provide any sort of atomic store operation?
My point here had been more wrt the 8-byte operations, wherein
there are *pleanty* of multi-processor systems that don't have
an 8-byte atomic store.

Although in some cases we can make use of the fpu for that.
Indeed, I hope we can deal with that, at least on most 64-bit machines: we have got a nasty bug in the mt_allocator code (libstdc++/24469) which would be trivial to fix if size_t-sized atomics were generally available...

Paolo.

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