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Re: Optimization of conditional access to globals: thread-unsafe?


On 26 Oct 2007 15:20:01 -0700, Ian Lance Taylor <iant@google.com> wrote:
>
> It appears that the draft C++0x memory model prohibits speculative
> stores.
>
> Therefore I now think we should aim toward prohibiting them
> unconditionally.  That memory model is just a draft.  But I think we
> should implement it unconditionally when it exists.

In case anyone who's interested hasn't seen it, the draft memory model
is accompanied by N2338, "Concurrency memory model compiler
consequences"
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2338.html

Jon


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