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    SubjectRe: [RFC][PATCH 0/5] arch: atomic rework
    On Fri, Feb 07, 2014 at 10:02:16AM -0800, Paul E. McKenney wrote:
    > As near as I can tell, compiler writers hate the idea of prohibiting
    > speculative-store optimizations because it requires them to introduce
    > both control and data dependency tracking into their compilers. Many of
    > them seem to hate dependency tracking with a purple passion. At least,
    > such a hatred would go a long way towards explaining the incomplete
    > and high-overhead implementations of memory_order_consume, the long
    > and successful use of idioms based on the memory_order_consume pattern
    > notwithstanding [*]. ;-)

    Just tell them that because the hardware provides control dependencies
    we actually use and rely on them.

    Not that I expect they care too much what we do, given the current state
    of things.


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